Commit Graph

3999 Commits

Author SHA1 Message Date
Thierry Reding
020a218f95 drm: Introduce drm_mode_object_{get,put}()
For consistency with other reference counting APIs in the kernel, add
drm_mode_object_get() and drm_mode_object_put() to reference count DRM
mode objects.

Compatibility aliases are added to keep existing code working. To help
speed up the transition, all the instances of the old functions in the
DRM core are already replaced in this commit.

A semantic patch is provided that can be used to convert all drivers to
the new helpers.

Reviewed-by: Sean Paul <seanpaul@chromium.org>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170228144643.5668-3-thierry.reding@gmail.com
2017-02-28 16:14:55 +01:00
Alexey Dobriyan
522b837c67 checkpatch: warn when formats use %Z and suggest %z
vsnprintf extension %Z<foo> is non-standard C.  Suggest the use of %z
instead.

Miscellanea:

 - Correct the misuse of type string PRINTF_0xDECIMAL type strings are
   supposed to be uppercase only. Fix this and add tr/[a-z]/[A-Z] to the
   type check in case I forget this again sometime in the future.

 - Improve the mechanism to find these defects so all 3 current checks
   are done on the format string

[joe@perches.com: correct the misuse of type string PRINTF_0xDECIMAL, improve the mechanism to find these defects]
  Link: http://lkml.kernel.org/r/4e3ad74b0c9dc229b06018a2d79655308ddbbebd.1484014173.git.joe@perches.com
Link: http://lkml.kernel.org/r/20170109235955.GA6787@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:48 -08:00
Jinbum Park
d7f6724366 scripts/spelling.txt: add some typo-words
I wrote a simple script to find new typo not in spelling.txt.
(https://github.com/jinb-park/find-linux-kernel-typo)

and get following result:

	[ rank ]
	63 paramaters
	18 alignement
	9 strucuture
	....

The number means how many files include the typo.
This patch adds these common typo.

Link: http://lkml.kernel.org/r/20170112113452.GA7042@pjb1027-Latitude-E5410
Signed-off-by: Jinbum Park <jinb.park7@gmail.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
4091fb95b5 scripts/spelling.txt: add "followings" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  followings||following

While we are here, add a missing colon in the boilerplate in DT binding
documents.  The "you SoC" in allwinner,sunxi-pinctrl.txt was fixed as
well.

I reworded "as the followings:" to "as follows:" for
drivers/usb/gadget/udc/renesas_usb3.c.

Link: http://lkml.kernel.org/r/1481573103-11329-32-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
608595ed9b scripts/spelling.txt: add "therfore" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  therfore||therefore

Besides, tidy up comment blocks for 80-col wrapping.

Link: http://lkml.kernel.org/r/1481573103-11329-31-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
b8a14f3379 scripts/spelling.txt: add "overwriten" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  overwrien||overwritten

Link: http://lkml.kernel.org/r/1481573103-11329-30-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
9a284e5c9e scripts/spelling.txt: add "overwritting" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  overwritting||overwriting

Link: http://lkml.kernel.org/r/1481573103-11329-29-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
1cce200081 scripts/spelling.txt: add "deintialize(d)" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  deintializing||deinitializing
  deintialize||deinitialize
  deintialized||deinitialized

Link: http://lkml.kernel.org/r/1481573103-11329-28-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
66f0044908 scripts/spelling.txt: add "disassocation" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  disassocation||disassociation

Link: http://lkml.kernel.org/r/1481573103-11329-27-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
0cf2a848ef scripts/spelling.txt: add "omited" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  omited||omitted
  omiting||omitting

Link: http://lkml.kernel.org/r/1481573103-11329-26-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
34dcaf40c1 scripts/spelling.txt: add "explictely" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  explictely||explicitly

Link: http://lkml.kernel.org/r/1481573103-11329-25-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
a6ab4eff19 scripts/spelling.txt: add "applys" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  applys||applies

The "applyes" in drivers/video/fbdev/aty/radeon_monitor.c is a different
pattern but it was fixed in this commit.  The "This functions" in the
same line was fixed as well.

Link: http://lkml.kernel.org/r/1481573103-11329-24-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
2c14960100 scripts/spelling.txt: add "configuartion" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  configuartion||configuration

While we are here, fix the "ouput" as well in the touched hunk in
drivers/media/dvb-frontends/drx39xyj/drx_driver.h.

Link: http://lkml.kernel.org/r/1481573103-11329-23-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
03671057c3 scripts/spelling.txt: add "overrided" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  overrided||overridden

Link: http://lkml.kernel.org/r/1481573103-11329-22-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
3f8b6fb7f2 scripts/spelling.txt: add "comsume(r)" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  comsume||consume
  comsumer||consumer
  comsuming||consuming

I see some variable names with this pattern, but this commit is only
touching comment blocks to avoid unexpected impact.

Link: http://lkml.kernel.org/r/1481573103-11329-19-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
d7f3153e22 scripts/spelling.txt: add "initialiazation" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  initialiazation||initialization

While we are here, fix the "overriden" in the touched line in
drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c.

Link: http://lkml.kernel.org/r/1481573103-11329-17-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
183b8021fc scripts/spelling.txt: add "intialization" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  intialization||initialization

The "inintialization" in drivers/acpi/spcr.c is a different pattern but
I fixed it as well in this commit.

Link: http://lkml.kernel.org/r/1481573103-11329-16-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
4d39f0ac8e scripts/spelling.txt: add "unneded" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  unneded||unneeded

Link: http://lkml.kernel.org/r/1481573103-11329-15-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
176180c2b4 scripts/spelling.txt: add "neded" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  neded||needed

While we are here, fix the "overriden", "wont", and "etc" in the same
hunk in drivers/media/usb/tm6000/tm6000-input.c.

Link: http://lkml.kernel.org/r/1481573103-11329-14-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
57366a8d0b scripts/spelling.txt: add "againt" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  againt||against

While we are here, fix the "capabilites" as well in the touched hunk in
drivers/gpu/drm/drm_probe_helper.c.

Link: http://lkml.kernel.org/r/1481573103-11329-13-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
b43daedc0e scripts/spelling.txt: add "embeded" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  embeded||embedded

Link: http://lkml.kernel.org/r/1481573103-11329-12-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
b564d62e67 scripts/spelling.txt: add "varible" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  varible||variable

While we are here, tidy up the comment blocks that fit in a single line
for drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c and
net/sctp/transport.c.

Link: http://lkml.kernel.org/r/1481573103-11329-11-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Masahiro Yamada
4e0385dd74 scripts/spelling.txt: add "efective" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  efective||effective

While we are here, fix the "addres" as well in the touched line in
arch/openrisc/kernel/entry.S.

Link: http://lkml.kernel.org/r/1481573103-11329-10-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:46 -08:00
Masahiro Yamada
89d790ab31 scripts/spelling.txt: add "algined" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  algined||aligned

While we are here, fix the "appplication" in the touched line in
drivers/block/loop.c.  Also, fix the "may not naturally ..." to
"may not be naturally ..." in the touched line in mm/page_alloc.

Link: http://lkml.kernel.org/r/1481573103-11329-9-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:46 -08:00
Masahiro Yamada
550116d21a scripts/spelling.txt: add "aligment" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  aligment||alignment

I did not touch the "N_BYTE_ALIGMENT" macro in
drivers/net/wireless/realtek/rtlwifi/wifi.h to avoid unpredictable
impact.

I fixed "_aligment_handler" in arch/openrisc/kernel/entry.S because
it is surrounded by #if 0 ... #endif.  It is surely safe and I
confirmed "_alignment_handler" is correct.

I also fixed the "controler" I found in the same hunk in
arch/openrisc/kernel/head.S.

Link: http://lkml.kernel.org/r/1481573103-11329-8-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:46 -08:00
Masahiro Yamada
0f5e155830 scripts/spelling.txt: add "an one" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  an one||a one

I dropped the "an" before "one or more" in
drivers/net/ethernet/sfc/mcdi_pcol.h.

Link: http://lkml.kernel.org/r/1481573103-11329-6-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:46 -08:00
Masahiro Yamada
03440c4e5e scripts/spelling.txt: add "an union" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  an union||a union

Link: http://lkml.kernel.org/r/1481573103-11329-5-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:46 -08:00
Masahiro Yamada
9332ef9dbd scripts/spelling.txt: add "an user" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  an user||a user
  an userspace||a userspace

I also added "userspace" to the list since it is a common word in Linux.
I found some instances for "an userfaultfd", but I did not add it to the
list.  I felt it is endless to find words that start with "user" such as
"userland" etc., so must draw a line somewhere.

Link: http://lkml.kernel.org/r/1481573103-11329-4-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:46 -08:00
Masahiro Yamada
c6efb58db4 scripts/spelling.txt: add "swithc" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  swithc||switch
  swithced||switched
  swithcing||switching

Link: http://lkml.kernel.org/r/1481573103-11329-3-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:46 -08:00
Masahiro Yamada
08a7e621ff scripts/spelling.txt: add "swith" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  swith||switch
  swithable||switchable
  swithed||switched
  swithing||switching

While we are here, fix the "update" to "updates" in the touched hunk in
drivers/net/wireless/marvell/mwifiex/wmm.c.

Link: http://lkml.kernel.org/r/1481573103-11329-2-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:46 -08:00
Arnd Bergmann
dcc235279a gcc-plugins: fix sancov_plugin for gcc-5
The name of the local variable was inadvertantly changed from
sancov_plugin_pass_info to sancov_pass_info:

scripts/gcc-plugins/sancov_plugin.c: In function ‘int plugin_init(plugin_name_args*, plugin_gcc_version*)’:
scripts/gcc-plugins/sancov_plugin.c:136:67: error: ‘sancov_plugin_pass_info’ was not declared in this scope

This changes the conditional reference to this variable as well.

Fixes: 5a45a4c5c3 ("gcc-plugins: consolidate on PASS_INFO macro")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kees Cook <keescook@chromium.org>
2017-02-27 14:10:10 -08:00
Linus Torvalds
7b46588f36 Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:

 - almost all of the rest of MM

 - misc bits

 - KASAN updates

 - procfs

 - lib/ updates

 - checkpatch updates

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (124 commits)
  checkpatch: remove false unbalanced braces warning
  checkpatch: notice unbalanced else braces in a patch
  checkpatch: add another old address for the FSF
  checkpatch: update $logFunctions
  checkpatch: warn on logging continuations
  checkpatch: warn on embedded function names
  lib/lz4: remove back-compat wrappers
  fs/pstore: fs/squashfs: change usage of LZ4 to work with new LZ4 version
  crypto: change LZ4 modules to work with new LZ4 module version
  lib/decompress_unlz4: change module to work with new LZ4 module version
  lib: update LZ4 compressor module
  lib/test_sort.c: make it explicitly non-modular
  lib: add CONFIG_TEST_SORT to enable self-test of sort()
  rbtree: use designated initializers
  linux/kernel.h: fix DIV_ROUND_CLOSEST to support negative divisors
  lib/find_bit.c: micro-optimise find_next_*_bit
  lib: add module support to atomic64 tests
  lib: add module support to glob tests
  lib: add module support to crc32 tests
  kernel/ksysfs.c: add __ro_after_init to bin_attribute structure
  ...
2017-02-25 10:29:09 -08:00
Linus Torvalds
9e31489029 OpenRISC updates for 4.11
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Merge tag 'openrisc-for-linus' of git://github.com/openrisc/linux

Pull OpenRISC updates from Stafford Horne:
 "Highlights include:

   - optimized memset and memcpy routines, ~20% boot time saving

   - support for cpu idling

   - adding support for l.swa and l.lwa atomic operations (in spec from
     2014)

   - use atomics to implement: bitops, cmpxchg, futex

   - the atomics are in preparation for SMP support"

* tag 'openrisc-for-linus' of git://github.com/openrisc/linux: (25 commits)
  openrisc: head: Init r0 to 0 on start
  openrisc: Export ioremap symbols used by modules
  arch/openrisc/lib/memcpy.c: use correct OR1200 option
  openrisc: head: Remove unused strings
  openrisc: head: Move init strings to rodata section
  openrisc: entry: Fix delay slot detection
  openrisc: entry: Whitespace and comment cleanups
  scripts/checkstack.pl: Add openrisc support
  MAINTAINERS: Add the openrisc official repository
  openrisc: Add .gitignore
  openrisc: Add optimized memcpy routine
  openrisc: Add optimized memset
  openrisc: Initial support for the idle state
  openrisc: Fix the bitmask for the unit present register
  openrisc: remove unnecessary stddef.h include
  openrisc: add futex_atomic_* implementations
  openrisc: add optimized atomic operations
  openrisc: add cmpxchg and xchg implementations
  openrisc: add atomic bitops
  openrisc: add l.lwa/l.swa emulation
  ...
2017-02-24 18:37:03 -08:00
Sven Eckelmann
9533047363 checkpatch: remove false unbalanced braces warning
Lines containing "} else {" should not be detected as unbalanced braces.
But the second check can be reduced to ".+else\s*{" and it therefore
never checked if the beginning of a line contains any other character
(like the relevant "}").  This check would also return true for "} else
{" and create warnings like

    CHECK: Unbalanced braces around else statement
    : FILE: ./net/batman-adv/tvlv.c:391:
    +   } else {

The check can be changed to check the whole line for the missing "}" to
avoid this false positive.

Fixes: 0d1532456c26 ("checkpatch: notice unbalanced else braces in a patch")
Link: http://lkml.kernel.org/r/20170220121644.12209-1-sven@narfation.org
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-24 17:46:57 -08:00
Joe Perches
e4c5babd32 checkpatch: notice unbalanced else braces in a patch
Patches that add or modify code like

	} else
		<foo>
or
	else {
		<bar>

where one branch appears to have a brace and the other branch does not
have a brace should emit a --strict style message.

Link: http://lkml.kernel.org/r/c6be32747fc725cbc235802991746700a0f54fdc.1486754390.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-24 17:46:57 -08:00
Matthew Wilcox
1bde561e47 checkpatch: add another old address for the FSF
We still have a lot of old addresses for the FSF in the kernel.

  willy@harry:~/kernel/idr$ git grep '675 Mass' |wc -l
  1502
  willy@harry:~/kernel/idr$ git grep '59 Temple' |wc -l
  2825
  willy@harry:~/kernel/idr$ git grep '51 Franklin' |wc -l
  2020

Let's discourage adding the oldest one too.

Link: http://lkml.kernel.org/r/20170128173052.GA23532@bombadil.infradead.org
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-24 17:46:57 -08:00
Miles Chen
758d7aada7 checkpatch: update $logFunctions
Currently checkpatch.pl does not recognize printk_deferred* functions as
log functions and complains about the line length of printk_deferred*
functions.  Add printk_deferred* to logFunctions to fix it.

Link: http://lkml.kernel.org/r/1484537124-18083-1-git-send-email-miles.chen@mediatek.com
Signed-off-by: Miles Chen <miles.chen@mediatek.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-24 17:46:57 -08:00
Joe Perches
45c55e92fc checkpatch: warn on logging continuations
pr_cont(...) and printk(KERN_CONT ...) uses should be discouraged
as their output can be interleaved by multiple logging processes.

Link: http://lkml.kernel.org/r/7100ba00098694ec81471a299583ed068975fd05.1483465888.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-24 17:46:57 -08:00
Joe Perches
77cb8546bc checkpatch: warn on embedded function names
Embedded function names are less appropriate to use when refactoring can
cause function renaming.  Prefer the use of "%s", __func__ to embedded
function names.

Link: http://lkml.kernel.org/r/ac9631fdbac5af3507c5bfe88ad9064f0ed764ec.1483510416.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-24 17:46:57 -08:00
Stafford Horne
f72deab378 scripts/checkstack.pl: Add openrisc support
Openrisc stack pointer is managed by decrementing r1. Add regexes to
recognize this.

Signed-off-by: Stafford Horne <shorne@gmail.com>
2017-02-25 04:30:50 +09:00
Linus Torvalds
bc49a7831b Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton:
 "142 patches:

   - DAX updates

   - various misc bits

   - OCFS2 updates

   - most of MM"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (142 commits)
  mm/z3fold.c: limit first_num to the actual range of possible buddy indexes
  mm: fix <linux/pagemap.h> stray kernel-doc notation
  zram: remove obsolete sysfs attrs
  mm/memblock.c: remove unnecessary log and clean up
  oom-reaper: use madvise_dontneed() logic to decide if unmap the VMA
  mm: drop unused argument of zap_page_range()
  mm: drop zap_details::check_swap_entries
  mm: drop zap_details::ignore_dirty
  mm, page_alloc: warn_alloc nodemask is NULL when cpusets are disabled
  mm: help __GFP_NOFAIL allocations which do not trigger OOM killer
  mm, oom: do not enforce OOM killer for __GFP_NOFAIL automatically
  mm: consolidate GFP_NOFAIL checks in the allocator slowpath
  lib/show_mem.c: teach show_mem to work with the given nodemask
  arch, mm: remove arch specific show_mem
  mm, page_alloc: warn_alloc print nodemask
  mm, page_alloc: do not report all nodes in show_mem
  Revert "mm: bail out in shrink_inactive_list()"
  mm, vmscan: consider eligible zones in get_scan_count
  mm, vmscan: cleanup lru size claculations
  mm, vmscan: do not count freed pages as PGDEACTIVATE
  ...
2017-02-22 19:29:24 -08:00
Linus Torvalds
be5165a51d DeviceTree updates for 4.11:
- Sync dtc to upstream commit 0931cea3ba20. This picks up overlay
   support in dtc.
 
 - Set dma_ops for reserved memory users.
 
 - Make references to IOMMU consistent in DT bindings.
 
 - Cleanup references to pm_power_off in bindings.
 
 - Move some display bindings that snuck into the old bindings/video/
   path.
 
 - Fix some wrong documentation paths caused from binding restructuring.
 
 - Vendor prefixes for Faraday and Fujitsu.
 
 - Fix an of_node ref counting leak in of_find_node_opts_by_path
 
 - Introduce new graph helper of_graph_get_remote_node() which will be
   used by DRM drivers in 4.12.
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Merge tag 'devicetree-for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull DeviceTree updates from Rob Herring:
 "Pretty standard stuff with dtc upstream sync being the biggest piece.

   - Sync dtc to upstream commit 0931cea3ba20. This picks up overlay
     support in dtc.

   - Set dma_ops for reserved memory users.

   - Make references to IOMMU consistent in DT bindings.

   - Cleanup references to pm_power_off in bindings.

   - Move some display bindings that snuck into the old bindings/video/
     path.

   - Fix some wrong documentation paths caused from binding
     restructuring.

   - Vendor prefixes for Faraday and Fujitsu.

   - Fix an of_node ref counting leak in of_find_node_opts_by_path

   - Introduce new graph helper of_graph_get_remote_node() which will be
     used by DRM drivers in 4.12"

* tag 'devicetree-for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (27 commits)
  DT: add Faraday Tec. as vendor
  of: introduce of_graph_get_remote_node
  of: Add missing space at end of pr_fmt().
  of: make of_device_make_bus_id() static
  of: fix of_node leak caused in of_find_node_opts_by_path
  dt-bindings: net: remove reference to fixed link support
  dt-bindings: power: reset: qnap-poweroff: Drop reference to pm_power_off
  dt-bindings: power: reset: gpio-poweroff: Drop reference to pm_power_off
  dt-bindings: mfd: as3722: Drop reference to pm_power_off
  dt-bindings: display: move ANX7814 and SiI8620 bridge bindings
  of/unittest: Swap arguments of of_unittest_apply_overlay()
  Documentation: usb: fix wrong documentation paths
  serial: fsl-imx-uart.txt: Remove generic property
  devicetree: Add Fujitsu Ltd. vendor prefix
  Documentation: display: fix wrong documentation paths
  of: remove redundant memset in overlay
  bus:qcom : Fix typo in qcom,ebi2.txt
  dt-bindings: qman: Remove pool channel node
  Documentation: panel-dpi: fix path to display-timing.txt
  devicetree: bindings: clk: mvebu: fix description for sata1 on Armada XP
  ...
2017-02-22 19:23:14 -08:00
Linus Torvalds
c1aac62f36 A slightly quieter cycle for documentation this time around.
Three more DocBook template files have been converted to RST; only 21 to
 go.  There are various build improvements and the usual array of
 documentation improvements and fixes.
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Merge tag 'docs-4.11' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "A slightly quieter cycle for documentation this time around.

  Three more DocBook template files have been converted to RST; only 21
  to go. There are various build improvements and the usual array of
  documentation improvements and fixes"

* tag 'docs-4.11' of git://git.lwn.net/linux: (44 commits)
  docs / driver-api: Fix structure references in device_link.rst
  PM / docs: Fix structure references in device.rst
  Add a target to check broken external links in the Documentation
  Documentation: Fix linux-api list typo
  Documentation: DocBook/Makefile comment typo
  Improve sparse documentation
  Documentation: make Makefile.sphinx no-ops quieter
  Documentation: DMA-ISA-LPC.txt
  Documentation: input: fix path to input code definitions
  docs: Remove the copyright year from conf.py
  docs: Fix a warning in the Korean HOWTO.rst translation
  PM / sleep / docs: Convert PM notifiers document to reST
  PM / core / docs: Convert sleep states API document to reST
  PM / core: Update kerneldoc comments in pm.h
  doc-rst: Fix recursive make invocation from macros
  doc-rst: Delete output of failed dot-SVG conversion
  doc-rst: Break shell command sequences on failure
  Documentation/sphinx: make targets independent of Sphinx work for HAVE_SPHINX=0
  doc-rst: fixed cleandoc target when used with O=dir
  Documentation/sphinx: prevent generation of .pyc files in the source tree
  ...
2017-02-22 18:51:29 -08:00
Hou Tao
7659c655be scripts/tags.sh: include arch/Kconfig* for tags generation
Kconfig files under arch/ directory are ignored by all_kconfigs(),
so include them for tags generation.

Link: http://lkml.kernel.org/r/1486206053-38223-1-git-send-email-houtao1@huawei.com
Signed-off-by: Hou Tao <houtao1@huawei.com>
Cc: Michal Marek <mmarek@suse.com>
Cc: Joe Perches <joe@perches.com>
Cc: Mathieu Maret <mathieu.maret@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:26 -08:00
Cheah Kok Cheong
8087a5609d scripts/checkincludes.pl: add exit message for no duplicates found
If no duplicates found, inform user.

Link: http://lkml.kernel.org/r/1486391275-2843-1-git-send-email-thrust73@gmail.com
Signed-off-by: Cheah Kok Cheong <thrust73@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:26 -08:00
Tobias Klauser
0e5a47a8d3 scripts/checkstack.pl: add support for nios2
Adjust checkstack.pl for the nios2 architecture.

Link: http://lkml.kernel.org/r/20170116113052.15034-1-tklauser@distanz.ch
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Cc: Ley Foon Tan <lftan@altera.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:26 -08:00
Jean Delvare
78c5250296 scripts/Lindent: clean up and optimize
* Add a few blank lines to improve readability.
* Don't call cut 3 times when once is enough.
* Drop a useless semicolon.

Link: http://lkml.kernel.org/r/20170104140356.162abab2@endymion
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:26 -08:00
Ross Zwisler
10f24f75b3 scripts/spelling.txt: fix incorrect typo-words
Fix up some incorrect typo-words.

[akpm@linux-foundation.org: "licencing" is valid British spelling and should be kept, per Joe]
Link: http://lkml.kernel.org/r/1486409689-23335-1-git-send-email-ross.zwisler@linux.intel.com
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:26 -08:00
Colin Ian King
8c32002657 scripts/spelling.txt: add several more common spelling mistakes
Lately I've been cleaning up spelling mistakes in kernel error messages
and here are some of the more common spelling mistakes that I've found
which probably should be added to this list so we don't keep on seeing
them appearing again.

Link: http://lkml.kernel.org/r/20161209173326.17662-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:26 -08:00
Linus Torvalds
e30aee9e10 char/misc driver patches for 4.11-rc1
Here is the big char/misc driver patchset for 4.11-rc1.
 
 Lots of different driver subsystems updated here.  Rework for the hyperv
 subsystem to handle new platforms better, mei and w1 and extcon driver
 updates, as well as a number of other "minor" driver updates.  Full
 details are in the shortlog below.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big char/misc driver patchset for 4.11-rc1.

  Lots of different driver subsystems updated here: rework for the
  hyperv subsystem to handle new platforms better, mei and w1 and extcon
  driver updates, as well as a number of other "minor" driver updates.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (169 commits)
  goldfish: Sanitize the broken interrupt handler
  x86/platform/goldfish: Prevent unconditional loading
  vmbus: replace modulus operation with subtraction
  vmbus: constify parameters where possible
  vmbus: expose hv_begin/end_read
  vmbus: remove conditional locking of vmbus_write
  vmbus: add direct isr callback mode
  vmbus: change to per channel tasklet
  vmbus: put related per-cpu variable together
  vmbus: callback is in softirq not workqueue
  binder: Add support for file-descriptor arrays
  binder: Add support for scatter-gather
  binder: Add extra size to allocator
  binder: Refactor binder_transact()
  binder: Support multiple /dev instances
  binder: Deal with contexts in debugfs
  binder: Support multiple context managers
  binder: Split flat_binder_object
  auxdisplay: ht16k33: remove private workqueue
  auxdisplay: ht16k33: rework input device initialization
  ...
2017-02-22 11:38:22 -08:00
Linus Torvalds
38705613b7 powerpc updates for 4.11 part 1.
Highlights include:
 
  - Support for direct mapped LPC on POWER9, giving Linux direct access to
    devices that may be on there such as a UART.
 
  - Memory hotplug support for the Power9 Radix MMU.
 
  - Add new AUX vectors describing the processor's cache geometry, to be used by
    glibc.
 
  - The ability for a guest to ask the hypervisor to resize the guest's hash
    table, and in addition support for doing so automatically when memory is
    hotplugged into/out-of the guest. This allows the hash table to be sized
    based on the current memory usage of the guest, rather than the maximum
    possible memory usage.
 
  - Implementation of optprobes (kprobe optimisation) for powerpc.
 
 In addition there's the topic branch shared with the KVM tree, which includes
 support for guests to use the Radix MMU on Power9.
 
 Thanks to:
   Alistair Popple, Andrew Donnellan, Aneesh Kumar K.V, Anju T, Anton Blanchard,
   Benjamin Herrenschmidt, Chris Packham, Daniel Axtens, Daniel Borkmann, David
   Gibson, Finn Thain, Gautham R. Shenoy, Gavin Shan, Greg Kurz, Joel Stanley,
   John Allen, Madhavan Srinivasan, Mahesh Salgaonkar, Markus Elfring, Michael
   Neuling, Nathan Fontenot, Naveen N. Rao, Nicholas Piggin, Paul Mackerras, Ravi
   Bangoria, Reza Arbab, Shailendra Singh, Vaibhav Jain, Wei Yongjun.
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Merge tag 'powerpc-4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Highlights include:

   - Support for direct mapped LPC on POWER9, giving Linux direct access
     to devices that may be on there such as a UART.

   - Memory hotplug support for the Power9 Radix MMU.

   - Add new AUX vectors describing the processor's cache geometry, to
     be used by glibc.

   - The ability for a guest to ask the hypervisor to resize the guest's
     hash table, and in addition support for doing so automatically when
     memory is hotplugged into/out-of the guest. This allows the hash
     table to be sized based on the current memory usage of the guest,
     rather than the maximum possible memory usage.

   - Implementation of optprobes (kprobe optimisation) for powerpc.

  In addition there's the topic branch shared with the KVM tree, which
  includes support for guests to use the Radix MMU on Power9.

  Thanks to:
    Alistair Popple, Andrew Donnellan, Aneesh Kumar K.V, Anju T, Anton
    Blanchard, Benjamin Herrenschmidt, Chris Packham, Daniel Axtens,
    Daniel Borkmann, David Gibson, Finn Thain, Gautham R. Shenoy, Gavin
    Shan, Greg Kurz, Joel Stanley, John Allen, Madhavan Srinivasan,
    Mahesh Salgaonkar, Markus Elfring, Michael Neuling, Nathan Fontenot,
    Naveen N. Rao, Nicholas Piggin, Paul Mackerras, Ravi Bangoria, Reza
    Arbab, Shailendra Singh, Vaibhav Jain, Wei Yongjun"

* tag 'powerpc-4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (129 commits)
  powerpc/mm/radix: Skip ptesync in pte update helpers
  powerpc/mm/radix: Use ptep_get_and_clear_full when clearing pte for full mm
  powerpc/mm/radix: Update pte update sequence for pte clear case
  powerpc/mm: Update PROTFAULT handling in the page fault path
  powerpc/xmon: Fix data-breakpoint
  powerpc/mm: Fix build break with BOOK3S_64=n and MEMORY_HOTPLUG=y
  powerpc/mm: Fix build break when CMA=n && SPAPR_TCE_IOMMU=y
  powerpc/mm: Fix build break with RADIX=y & HUGETLBFS=n
  powerpc/pseries: Fix typo in parameter description
  powerpc/kprobes: Remove kprobe_exceptions_notify()
  kprobes: Introduce weak variant of kprobe_exceptions_notify()
  powerpc/ftrace: Fix confusing help text for DISABLE_MPROFILE_KERNEL
  powerpc/powernv: Fix opal_exit tracepoint opcode
  powerpc: Add a prototype for mcount() so it can be versioned
  powerpc: Drop GPL from of_node_to_nid() export to match other arches
  powerpc/kprobes: Optimize kprobe in kretprobe_trampoline()
  powerpc/kprobes: Implement Optprobes
  powerpc/kprobes: Fixes for kprobe_lookup_name() on BE
  powerpc: Add helper to check if offset is within relative branch range
  powerpc/bpf: Introduce __PPC_SH64()
  ...
2017-02-22 10:30:38 -08:00
Linus Torvalds
1e74a2eb1f Updates to the gcc-plugins:
- infrastructure updates (gcc-common.h)
 - introduce structleak plugin for forced initialization of some structures
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Merge tag 'gcc-plugins-v4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull gcc-plugins updates from Kees Cook:
 "This includes infrastructure updates and the structleak plugin, which
  performs forced initialization of certain structures to avoid possible
  information exposures to userspace.

  Summary:

   - infrastructure updates (gcc-common.h)

   - introduce structleak plugin for forced initialization of some
     structures"

* tag 'gcc-plugins-v4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  gcc-plugins: Add structleak for more stack initialization
  gcc-plugins: consolidate on PASS_INFO macro
  gcc-plugins: add PASS_INFO and build_const_char_string()
2017-02-22 09:05:47 -08:00
Kees Cook
c054ee3bbf Merge branch 'for-next/gcc-plugin/structleak' into for-linus/gcc-plugins 2017-02-21 21:12:57 -08:00
Linus Torvalds
0f002fddbe MIPS changes for v4.11
Miscellaneous:
  - Add IRQ stacks
  - Add cacheinfo support
  - Add "uzImage.bin" zboot target
  - Unify performance counter definitions
  - Export various (mainly assembly) symbols alongside their
    definitions
  - Audit and remove unnecessary uses of module.h
 
 kexec & kdump:
  - Lots of improvements and fixes
  - Add correct copy_regs implementations
  - Add debug logging of new kernel information
 
 Security:
  - Use Makefile.postlink to insert relocations into vmlinux
  - Provide plat_post_relocation hook (used for Octeon KASLR)
  - Add support for tuning mmap randomisation
  - Relocate DTB
 
 microMIPS:
  - A load of unwind fixes
  - Add some missing .insn to fix link errors
 
 MIPSr6:
  - Fix MULTU/MADDU/MSUBU sign extension in r2 emulation
  - Remove r2_emul_return and use ERETNC unconditionally on MIPSr6
  - Allow pre-r6 emulation on SMP MIPSr6 kernels
 
 Cache management:
  - Treat physically indexed dcache as non-aliasing
  - Add return errors to protected cache ops for KVM
  - CM3: Ensure L1 & L2 cache ECC checking matches
  - CM3: Indicate inclusive caches
  - I6400: Treat dcache as physically indexed
 
 Memory management:
  - Ensure bootmem doesn't corrupt reserved memory
  - Export some TLB exception generation functions for KVM
 
 OF
  - NULL check initial_boot_params before use in of_scan_flat_dt()
  - Fix unaligned access in of_alias_scan()
 
 SMP:
  - CPS: Don't BUG if a CPU fails to start
 
 Other fixes
  - Fix longstanding 64-bit IP checksum carry bug
  - Fix KERN_CONT fallout in cpu-bugs64.c and sync-r4k.c
  - Update defconfigs for NF_CT_PROTO_DCCP, DPLITE,
    CPU_FREQ_STAT,SCSI_DH changes
  - Disable certain builtin compiler options, stack-check (whole
    kernel), asynchronous-unwind-tables (VDSO).
  - A bunch of build fixes from kernelci.org testing
  - Various other minor cleanups & corrections
 
 BMIPS:
  - Migrate interrupts during bmips_cpu_disable
  - BCM47xx: Add Luxul devices
  - BCM47xx: Fix Asus WL-500W button inversion
  - BCM7xxx: Add SPI device nodes
 
 Generic (multiplatform):
  - Add kexec DTB passing
  - Fix big endian
  - Add cpp_its_S in ksym_dep_filter to silence build warning
 
 IP22:
  - Reformat inline assembler code to modern standards
  - Fix binutils 2.25 build error
 
 IP27:
  - Fix duplicate CAC_BASE definition build error
  - Disable qlge driver to workaround broken compiler
 
 Lantiq:
  - Refresh defconfig and activate more drivers
  - Lock DMA register access
  - Fix cascading IRQ setup
  - Fix build of VPE loader
  - xway: Fix ethernet packet header corruption over reboot
 
 Loongson1
  - Add watchdog support
  - 1B: Reduce DEFAULT_MEMSIZE to 64MB
  - 1B: Change OSC clock name to match rest of kernel
  - 1C: Remove ARCH_WANT_OPTIONAL_GPIOLIB
 
 Octeon:
  - Add KASLR support
  - Support Octeon III USB controller
  - Fix large copy_from_user corner case
  - Enable devtmpfs in defconfig
 
 Netlogic:
  - Fix non-default XLR build error due to netlogic,xlp-pic code
  - Fix assembler warning from smpboot.S
 
 pic32mzda:
  - Fix linker error when early printk is disabled
 
 Pistachio:
  - Add base device tree
  - Add Ci40 "Marduk" device tree
 
 Ralink:
  - Support raw appended DTB
  - Add missing I2C & I2S clocks
  - Add missing pinmux and fix pinmux function name typo
  - Add missing clk_round_rate()
  - Clean up prom_init()
  - MT7621: Set SoC type
  - MT7621: Support highmem
 
 TXx9:
  - Modernize printing of kernel messages and resolve KERN_CONT fallout
  - 7segled: use permission-specific DEVICE_ATTR variants
 
 XilFPGA:
  - Add IRQ controller and UART IRQ
  - Add AXI I2C and emaclite to DT & defconfig
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Merge tag 'mips_4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips

Pull MIPS updates from James Hogan:
 "Here's the main MIPS pull request for 4.11.

  It contains a few new features such as IRQ stacks, cacheinfo support,
  and KASLR for Octeon CPUs, and a variety of smaller improvements and
  fixes including devicetree additions, kexec cleanups, microMIPS stack
  unwinding fixes, and a bunch of build fixes to clean up continuous
  integration builds.

  Its all been in linux-next for at least a couple of days, most of it
  far longer.

  Miscellaneous:
   - Add IRQ stacks
   - Add cacheinfo support
   - Add "uzImage.bin" zboot target
   - Unify performance counter definitions
   - Export various (mainly assembly) symbols alongside their
     definitions
   - Audit and remove unnecessary uses of module.h

  kexec & kdump:
   - Lots of improvements and fixes
   - Add correct copy_regs implementations
   - Add debug logging of new kernel information

  Security:
   - Use Makefile.postlink to insert relocations into vmlinux
   - Provide plat_post_relocation hook (used for Octeon KASLR)
   - Add support for tuning mmap randomisation
   - Relocate DTB

  microMIPS:
   - A load of unwind fixes
   - Add some missing .insn to fix link errors

  MIPSr6:
   - Fix MULTU/MADDU/MSUBU sign extension in r2 emulation
   - Remove r2_emul_return and use ERETNC unconditionally on MIPSr6
   - Allow pre-r6 emulation on SMP MIPSr6 kernels

  Cache management:
   - Treat physically indexed dcache as non-aliasing
   - Add return errors to protected cache ops for KVM
   - CM3: Ensure L1 & L2 cache ECC checking matches
   - CM3: Indicate inclusive caches
   - I6400: Treat dcache as physically indexed

  Memory management:
   - Ensure bootmem doesn't corrupt reserved memory
   - Export some TLB exception generation functions for KVM

  OF:
   - NULL check initial_boot_params before use in of_scan_flat_dt()
   - Fix unaligned access in of_alias_scan()

  SMP:
   - CPS: Don't BUG if a CPU fails to start

  Other fixes:
   - Fix longstanding 64-bit IP checksum carry bug
   - Fix KERN_CONT fallout in cpu-bugs64.c and sync-r4k.c
   - Update defconfigs for NF_CT_PROTO_DCCP, DPLITE,
     CPU_FREQ_STAT,SCSI_DH changes
   - Disable certain builtin compiler options, stack-check (whole
     kernel), asynchronous-unwind-tables (VDSO).
   - A bunch of build fixes from kernelci.org testing
   - Various other minor cleanups & corrections

  BMIPS:
   - Migrate interrupts during bmips_cpu_disable
   - BCM47xx: Add Luxul devices
   - BCM47xx: Fix Asus WL-500W button inversion
   - BCM7xxx: Add SPI device nodes

  Generic (multiplatform):
   - Add kexec DTB passing
   - Fix big endian
   - Add cpp_its_S in ksym_dep_filter to silence build warning

  IP22:
   - Reformat inline assembler code to modern standards
   - Fix binutils 2.25 build error

  IP27:
   - Fix duplicate CAC_BASE definition build error
   - Disable qlge driver to workaround broken compiler

  Lantiq:
   - Refresh defconfig and activate more drivers
   - Lock DMA register access
   - Fix cascading IRQ setup
   - Fix build of VPE loader
   - xway: Fix ethernet packet header corruption over reboot

  Loongson1
   - Add watchdog support
   - 1B: Reduce DEFAULT_MEMSIZE to 64MB
   - 1B: Change OSC clock name to match rest of kernel
   - 1C: Remove ARCH_WANT_OPTIONAL_GPIOLIB

  Octeon:
   - Add KASLR support
   - Support Octeon III USB controller
   - Fix large copy_from_user corner case
   - Enable devtmpfs in defconfig

  Netlogic:
   - Fix non-default XLR build error due to netlogic,xlp-pic code
   - Fix assembler warning from smpboot.S

  pic32mzda:
   - Fix linker error when early printk is disabled

  Pistachio:
   - Add base device tree
   - Add Ci40 "Marduk" device tree

  Ralink:
   - Support raw appended DTB
   - Add missing I2C & I2S clocks
   - Add missing pinmux and fix pinmux function name typo
   - Add missing clk_round_rate()
   - Clean up prom_init()
   - MT7621: Set SoC type
   - MT7621: Support highmem

  TXx9:
   - Modernize printing of kernel messages and resolve KERN_CONT fallout
   - 7segled: use permission-specific DEVICE_ATTR variants

  XilFPGA:
   - Add IRQ controller and UART IRQ
   - Add AXI I2C and emaclite to DT & defconfig"

* tag 'mips_4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips: (148 commits)
  MIPS: VDSO: Explicitly use -fno-asynchronous-unwind-tables
  MIPS: BCM47XX: Fix button inversion for Asus WL-500W
  MIPS: DTS: Add img directory to Makefile
  MIPS: ip27: Disable qlge driver in defconfig
  MIPS: pic32mzda: Fix linker error for pic32_get_pbclk()
  MIPS: Lantiq: Keep ethernet enabled during boot
  MIPS: OCTEON: Fix copy_from_user fault handling for large buffers
  MIPS: Fix special case in 64 bit IP checksumming.
  MIPS: OCTEON: Enable DEVTMPFS
  MIPS: lantiq: Set physical_memsize
  MIPS: sysmips: Remove duplicated include from syscall.c
  Kbuild: Add cpp_its_S in ksym_dep_filter
  MIPS: Audit and remove any unnecessary uses of module.h
  MIPS: Unify perf counter register definitions
  MIPS: Disable stack checks on MIPS kernels
  MIPS: OCTEON: Platform support for OCTEON III USB controller
  MIPS: Lantiq: Fix cascaded IRQ setup
  MIPS: sync-r4k: Fix KERN_CONT fallout
  MIPS: IRQ Stack: Fix erroneous jal to plat_irq_dispatch
  MIPS: Fix distclean with Makefile.postlink
  ...
2017-02-21 14:21:11 -08:00
Linus Torvalds
c9341ee0af Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security layer updates from James Morris:
 "Highlights:

   - major AppArmor update: policy namespaces & lots of fixes

   - add /sys/kernel/security/lsm node for easy detection of loaded LSMs

   - SELinux cgroupfs labeling support

   - SELinux context mounts on tmpfs, ramfs, devpts within user
     namespaces

   - improved TPM 2.0 support"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (117 commits)
  tpm: declare tpm2_get_pcr_allocation() as static
  tpm: Fix expected number of response bytes of TPM1.2 PCR Extend
  tpm xen: drop unneeded chip variable
  tpm: fix misspelled "facilitate" in module parameter description
  tpm_tis: fix the error handling of init_tis()
  KEYS: Use memzero_explicit() for secret data
  KEYS: Fix an error code in request_master_key()
  sign-file: fix build error in sign-file.c with libressl
  selinux: allow changing labels for cgroupfs
  selinux: fix off-by-one in setprocattr
  tpm: silence an array overflow warning
  tpm: fix the type of owned field in cap_t
  tpm: add securityfs support for TPM 2.0 firmware event log
  tpm: enhance read_log_of() to support Physical TPM event log
  tpm: enhance TPM 2.0 PCR extend to support multiple banks
  tpm: implement TPM 2.0 capability to get active PCR banks
  tpm: fix RC value check in tpm2_seal_trusted
  tpm_tis: fix iTPM probe via probe_itpm() function
  tpm: Begin the process to deprecate user_read_timer
  tpm: remove tpm_read_index and tpm_write_index from tpm.h
  ...
2017-02-21 12:49:56 -08:00
Rafael J. Wysocki
eee77a8a0d Merge branch 'pm-tools'
* pm-tools:
  tools/power/x86: Debug utility for intel_pstate driver
  AnalyzeSuspend: fix drag and zoom bug in javascript
  scripts: analyze_suspend.py: Update to upstream v4.5
  scripts: analyze_suspend.py: Update to upstream v4.4
  scripts: analyze_suspend.py: Update to upstream v4.3
2017-02-20 14:26:34 +01:00
Todd E Brandt
b3fc275d54 AnalyzeSuspend: fix drag and zoom bug in javascript
Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-02-16 00:52:35 +01:00
Marcin Nowakowski
0d070d2b5c Kbuild: Add cpp_its_S in ksym_dep_filter
Add a new command cpp_its_S introduced in commit cf2a5e0bb4 ("MIPS:
Support generating Flattened Image Trees (.itb)") to ksym_dep_filter
handler - otherwise a warning is produced during the build of MIPS
platforms (when vmlinux.*.itb target is chosen).

Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: Michal Marek <mmarek@suse.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15278/
Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-02-14 09:00:26 +00:00
Felix Fietkau
f86880175d sign-file: fix build error in sign-file.c with libressl
The sign-file tool failed to build against libressl. Fix this by extending
the PKCS7 check and thus making sign-file link against libressl without an
error.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
2017-02-10 12:43:47 +11:00
Greg Kroah-Hartman
17fa87fe5a Merge 4.10-rc7 into char-misc-next
We want the hv and other fixes in here as well to handle merge and
testing issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-06 09:39:13 +01:00
Ard Biesheuvel
56067812d5 kbuild: modversions: add infrastructure for emitting relative CRCs
This add the kbuild infrastructure that will allow architectures to emit
vmlinux symbol CRCs as 32-bit offsets to another location in the kernel
where the actual value is stored. This works around problems with CRCs
being mistaken for relocatable symbols on kernels that self relocate at
runtime (i.e., powerpc with CONFIG_RELOCATABLE=y)

For the kbuild side of things, this comes down to the following:

 - introducing a Kconfig symbol MODULE_REL_CRCS

 - adding a -R switch to genksyms to instruct it to emit the CRC symbols
   as references into the .rodata section

 - making modpost distinguish such references from absolute CRC symbols
   by the section index (SHN_ABS)

 - making kallsyms disregard non-absolute symbols with a __crc_ prefix

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-03 08:28:25 -08:00
Andrew Donnellan
65c059bcaa powerpc: Enable support for GCC plugins
Enable support for GCC plugins on powerpc.

Add an additional version check in gcc-plugins-check to advise users to
upgrade to gcc 5.2+ on powerpc to avoid issues with header files (gcc <=
4.6) or missing copies of rs6000-cpus.def (4.8 to 5.1 on 64-bit
targets).

Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-02-03 21:59:28 +11:00
Andrew Donnellan
7b4010edff gcc-plugins: Fix definition of DISABLE_LATENT_ENTROPY_PLUGIN
The variable DISABLE_LATENT_ENTROPY_PLUGIN is defined when
CONFIG_PAX_LATENT_ENTROPY is set. This is leftover from the original PaX
version of the plugin code and doesn't actually exist. Change the condition
to depend on CONFIG_GCC_PLUGIN_LATENT_ENTROPY instead.

Fixes: 38addce8b6 ("gcc-plugins: Add latent_entropy plugin")
Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-02-03 21:59:27 +11:00
Valentin Rothberg
3b28f4f2c2 checkkconfigsymbols.py: support Kconfig's 'imply' statement
Support the new imply statement in Kconfig.  The imply statement has
been added by commit 237e3ad0f1 ("Kconfig: Introduce the "imply"
keyword") and is a weak version of a select, but the target symbol can
still be turned off.

Signed-off-by: Andreas Ziegler <andreas.ziegler@fau.de>
Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-03 11:49:06 +01:00
Todd E Brandt
03bc39beb7 scripts: analyze_suspend.py: Update to upstream v4.5
- Kernel errors shown in timeline
- Tool log: The tool output log is now available in the html timeline
- Selective ftrace filter: can choose phase and test run (for x2)
- further instrumentation of dev mode to cover wifi

Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-01-27 11:25:36 +01:00
Todd E Brandt
1ea39643b6 scripts: analyze_suspend.py: Update to upstream v4.4
- when running with sudo, change output dir back to SUDO_USER ownership
- replace all os.system/popen instances with subprocess.call/Popen
- graph pm device callbacks and async threads in separate sections
- remove kprobe config section and replaced it with timeline_functions
- added new kprobe config section for dev mode: dev_timeline_functions
- merge call loops in dev mode to create a single event with a count
- added hover text to all header entries to explain what they mean
- changed the -filter option to grep device driver/name for a string
- added new options for tuning the dev mode timeline/custom kprobes

Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-01-27 11:25:35 +01:00
Todd E Brandt
203f1f986a scripts: analyze_suspend.py: Update to upstream v4.3
- config file support added
- dev mode for monitoring kernel source calls and async kernel threads
- custom command support for executing a user cmd instead of suspend
- proc mode support for monitoring user processes with cpu exec data
- kprobe support for custom function tracing
- advanced callgraph support for function debug
- many bug fixes and formatting upgrades

Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-01-27 11:25:35 +01:00
Matthew Wilcox
5a0bc578e0 kernel-doc: Handle returning pointers to pointers
Clearly nobody ever tried to build the documentation for the radix tree
before:

include/linux/radix-tree.h:400: warning: cannot understand function
prototype: 'void ** radix_tree_iter_init(struct radix_tree_iter *iter,
unsigned long start) '

Indeed, the regexes only handled a single '*', not one-or-more.  I have
tried to fix that, but now I have perl regexes all over my hands, and
I fear I shall never be clean again.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-01-26 15:20:10 -07:00
Valentin Rothberg
8e8e333179 checkkconfigsymbols.py: don't sort similar symbols
Don't sort the list of string-similar Kconfig symbols alphabetically to
preserve the correct order of string similarity.

Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-19 11:28:31 +01:00
Kees Cook
c61f13eaa1 gcc-plugins: Add structleak for more stack initialization
This plugin detects any structures that contain __user attributes and
makes sure it is being fully initialized so that a specific class of
information exposure is eliminated. (This plugin was originally designed
to block the exposure of siginfo in CVE-2013-2141.)

Ported from grsecurity/PaX. This version adds a verbose option to the
plugin and the Kconfig.

Signed-off-by: Kees Cook <keescook@chromium.org>
2017-01-18 12:02:35 -08:00
Kees Cook
5a45a4c5c3 gcc-plugins: consolidate on PASS_INFO macro
Now that PASS_INFO() exists, use it in the other existing gcc plugins,
instead of always open coding the same thing.

Based on updates to the grsecurity/PaX gcc plugins.

Signed-off-by: Kees Cook <keescook@chromium.org>
2017-01-13 14:20:03 -08:00
Gabriel Krisman Bertazi
ada5f446bb kernel-doc: properly document array arguments of function
Documentation for array parameters passed in a function, like the first
argument in the function below, weren't getting exported in the rst
format, although they work fine for html and pdf formats:

  void drm_clflush_pages(struct page * pages[], unsigned long num_pages)

That's because the string key to store the description in the
parameterdescs dictionary doesn't have the [] suffix.  This cleans up
the suffix from the key before accessing the dictionary.

Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Fixes: c0d1b6ee78 ("kernel-doc: produce RestructuredText output")
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-01-13 10:53:24 -07:00
Kees Cook
8d4973a1c0 gcc-plugins: add PASS_INFO and build_const_char_string()
This updates the GCC plugins gcc-common.h from PaX Team to include
more helpers and header files, specifically adds the PASS_INFO()
macro to make plugin declarations nicer and a helper for proper
const string building.

Signed-off-by: Kees Cook <keescook@chromium.org>
2017-01-10 16:50:57 -08:00
Michal Marek
fde42bfcd2 genksyms: Regenerate parser
Regenerate the parser after d920f7c662 ("genksyms: Fix segfault with
invalid declarations").

Reported-and-tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Michal Marek <mmarek@suse.com>
2017-01-05 13:01:13 +01:00
Michal Marek
d920f7c662 genksyms: Fix segfault with invalid declarations
Do not try to recover too early and segfault when parsing invalid
declarations such as

echo 'int (int);' | scripts/genksyms/genksyms
echo 'int a, (int);' | scripts/genksyms/genksyms
echo 'extern void *__inline_memcpy((void *), (const void *), (__kernel_size_t));' | scripts/genksyms/genksyms

The last one was a real-life bug with
include/asm-generic/asm-prototypes.h on x86_64.

Reported-and-tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Michal Marek <mmarek@suse.com>
2017-01-05 13:00:54 +01:00
Paolo Bonzini
df31175bb4 kernel-doc: make highlights more homogenous for the various backends
$type_struct_full and friends are only used by the restructuredText
backend, because it needs to separate enum/struct/typedef/union from
the name of the type.  However, $type_struct is *also* used by the rST
backend.  This is confusing.

This patch replaces $type_struct's use in the rST backend with a new
$type_fallback; it modifies $type_struct so that it can be used in the
rST backend; and creates regular expressions like $type_struct
for enum/typedef/union, for use in all backends.

Note that, compared to $type_*_full, in the new regexes $1 includes both
the "kind" and the name (before, $1 was pretty much a constant).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-01-04 15:08:14 -07:00
Paolo Bonzini
5267dd354b kernel-doc: make member highlighting available in all backends
Note that, in order to produce the correct Docbook markup, the "." or "->"
must be separated from the member name in the regex's captured fields.  For
consistency, this change is applied to $type_member and $type_member_func
too, not just to $type_member_xml.

List mode only prints the struct name, to avoid any undesired change in
the operation of docproc.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-01-04 15:08:03 -07:00
Paolo Bonzini
fc6d7af89f kernel-doc: include parameter type in docbook output
The restructuredText output includes both the parameter type and
the name for functions and function-typed members.  Do the same
for docbook.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-01-04 15:07:53 -07:00
Paolo Bonzini
b1aaa546b5 kernel-doc: strip attributes even if they have an argument
An inline function can have an attribute, as in include/linux/log2.h,
and kernel-doc handles this already for simple cases.  However,
some attributes have arguments (e.g. the "target" attribute).
Handle those too.

Furthermore, attributes could be at the beginning of a function
declaration, before the return type.  To correctly handle this case,
you need to strip spaces after the attributes; otherwise, dump_function
is left confused.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-01-04 15:07:42 -07:00
Paolo Bonzini
02a4f4fe52 kernel-doc: cleanup parameter type in function-typed arguments
A prototype like

    /**
     * foo - sample definition
     * @bar: a parameter
     */
    int foo(int (*bar)(int x,
                       int y));

is currently producing

    .. c:function:: int foo (int (*bar) (int x,                    int y)

       sample definition

    **Parameters**

    ``int (*)(int x,                    int y) bar``
      a parameter

Collapse the spaces so that the output is nicer.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-01-04 15:07:23 -07:00
Rob Herring
6f05afcbb0 scripts/dtc: Update to upstream version 0931cea3ba20
Sync to upstream dtc commit 0931cea3ba20 ("dtc: fdtdump: check fdt if
not in scanning mode"). In particular, this pulls in dtc overlay
support.

This adds the following commits from upstream:

f88865469b65 dtc: Fix memory leak in character literal parsing
00fbb8696b66 Rename boot_info
1ef86ad2c24f dtc: Clean up /dts-v1/ and /plugin/ handling in grammar
e3c769aa9c16 dtc: Don't always generate __symbols__ for plugins
c96cb3c0169e tests: Don't use -@ on plugin de/recompile tests
66381538ce24 tests: Remove "suppression of fixups" tests
ba765b273f0f tests: Clarify dtc overlay tests
6ea8cd944fcd tests: More thorough tests of libfdt overlay application without dtc
7d8ef6e1db97 tests: Correct fdt handling of overlays without fixups and base trees without symbols
b4dc0ed8b127 tests: Fix double expansion bugs in test code
3ea879dc0c8f tests: Split overlay tests into those with do/don't exercise dtc plugin generation
47b4d66a2f11 tests: Test auto-alias generation on base tree, not overlay
72e1ad811523 tests: Make overlay/plugin tests unconditional
e7b3c3b5951b tests: Add overlay tests
9637e3f772a9 tests: Add check_path test
20f29d8d41f6 dtc: Plugin and fixup support
a2c92cac53f8 dtc: Document the dynamic plugin internals
8f70ac39801d checks: Pass boot_info instead of root node
ea10f953878f libfdt: add missing errors to fdt_strerror()
daa75e8fa594 libfdt: fix fdt_stringlist_search()
e28eff5b787a libfdt: fix fdt_stringlist_count()
ae97c7722840 tests: overlay: Rename the device tree blobs to be more explicit
96162d2bd9cb tests: overlay: Add test suffix to the compiled blobs
5ce8634733b7 libfdt: Add fdt_overlay_apply to the exported symbols
804a9db90ad2 fdt: strerr: Remove spurious BADOVERLAY
e8c3a1a493fa tests: overlay: Move back the bad fixup tests
7a72d89d3f81 libfdt: overlay: Fix symbols and fixups nodes condition
cabbaa972cdd libfdt: overlay: Report a bad overlay for mismatching local fixups
deb0a5c1aeaa libfdt: Add BADPHANDLE error string
7b7a6be9ba15 libfdt: Don't use 'index' as a local variable name
aea8860d831e tests: Add tests cases for the overlay code
0cdd06c5135b libfdt: Add overlay application function
39240cc865cf libfdt: Extend the reach of FDT_ERR_BADPHANDLE
4aa3a6f5e6d9 libfdt: Add new errors for the overlay code
6d1832c9e64b dtc: Remove "home page" link
45fd440a9561 Fix some typing errors in libfdt.h and livetree.c
a59be4939c13 Merge tag 'v1.4.2'
a34bb721caca dtc: Fix assorted problems in the testcases for the -a option
874f40588d3e Implement the -a option to pad dtb aligned
ec02b34c05be dtc: Makefile improvements for release uploading
1ed45d40a137 dtc: Bump version to 1.4.2
36fd7331fb11 libfdt: simplify fdt_del_mem_rsv()
d877364e4a0f libfdt: Add fdt_setprop_inplace_namelen_partial
3e9037aaad44 libfdt: Add fdt_getprop_namelen_w
84e0e1346c68 libfdt: Add max phandle retrieval function
d29126c90acb libfdt: Add iterator over properties
902d0f0953d0 libfdt: Add a subnodes iterator macro
c539075ba8ba fdtput.c: Fix memory leak.
f79ddb83e185 fdtget.c: Fix memory leak
1074ee54b63f convert-dtsv0-lexer.l: fix memory leak
e24d39a024e6 fdtdump.c: make sure size_t argument to memchr is always unsigned.
44a59713cf05 Remove unused srcpos_dump() function
cb9241ae3453 DTC: Fix memory leak on flatname.
1ee0ae24ea09 Simplify check field and macro names
9d97527a8621 Remove property check functions
2e709d158e11 Remove tree check functions
c4cb12e193e3 Alter grammar to allow multiple /dts-v1/ tags
d71d25d76012 Use xasprintf() in srcpos
9dc404958e9c util: Add xasprintf portable asprintf variant
beef80b8b55f Correct a missing space in a fdt_header cast
68d43cec1253 Correct line lengths in libfdt.h
b0dbceafd49a Correct space-after-tab in libfdt.h

Signed-off-by: Rob Herring <robh@kernel.org>
2017-01-04 10:47:53 -06:00
Kees Cook
81d873a871 gcc-plugins: update gcc-common.h for gcc-7
This updates gcc-common.h from Emese Revfy for gcc 7. This fixes issues seen
by Kugan and Arnd. Build tested with gcc 5.4 and 7 snapshot.

Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2017-01-03 12:08:59 -08:00
Kees Cook
9988f4d577 latent_entropy: fix ARM build error on earlier gcc
This fixes build errors seen on gcc-4.9.3 or gcc-5.3.1 for an ARM:

arm-soc/init/initramfs.c: In function 'error':
arm-soc/init/initramfs.c:50:1: error: unrecognizable insn:
 }
 ^
(insn 26 25 27 5 (set (reg:SI 111 [ local_entropy.243 ])
        (rotatert:SI (reg:SI 116 [ local_entropy.243 ])
            (const_int -30 [0xffffffffffffffe2]))) -1
     (nil))

Patch from PaX Team <pageexec@freemail.hu>

Reported-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Brad Spengler <spender@grsecurity.net>
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2017-01-03 12:08:59 -08:00
Linus Torvalds
67327145c4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull SElinux fix from James Morris:
 "From Paul:
   'A small SELinux patch to fix some clang/llvm compiler warnings and
    ensure the tools under scripts work well in the face of kernel
    changes'"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  selinux: use the kernel headers when building scripts/selinux
2016-12-22 10:03:52 -08:00
Paul Moore
bfc5e3a6af selinux: use the kernel headers when building scripts/selinux
Commit 3322d0d64f ("selinux: keep SELinux in sync with new capability
definitions") added a check on the defined capabilities without
explicitly including the capability header file which caused problems
when building genheaders for users of clang/llvm.  Resolve this by
using the kernel headers when building genheaders, which is arguably
the right thing to do regardless, and explicitly including the
kernel's capability.h header file in classmap.h.  We also update the
mdp build, even though it wasn't causing an error we really should
be using the headers from the kernel we are building.

Reported-by: Nicolas Iooss <nicolas.iooss@m4x.org>
Signed-off-by: Paul Moore <paul@paul-moore.com>
2016-12-21 10:39:25 -05:00
Linus Torvalds
135c919758 Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild misc updates from Michal Marek:

 - one new coccinelle check and improvements to irqf_oneshot.cocci

 - 'make rpm' POSIX compatibility fix

 - 'make deb-pkg' arm64 cross-compiling fix. I forgot to send this one
   during the v4.9 rc-phase, therefor the pull request is based on -rc6
   and not -rc1

* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  Coccinelle: misc: Add support for devm variant in all modes
  Coccinelle: misc: Improve the result given by context mode
  Coccinelle: misc: Improve the matching of rules
  kbuild/mkspec: avoid using brace expansion
  Coccinelle: Add misc/boolconv.cocci
  builddeb: fix cross-building to arm64 producing host-arch debs
2016-12-17 16:32:27 -08:00
Linus Torvalds
37861ffa8c Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kconfig updates from Michal Marek:

 - 'make xconfig' gui fixes

 - 'make nconfig' fix for options with long prompts

 - fix 'make nconfig' warning when pkg-config forces -D_GNU_SOURCE

* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  xconfig: fix missing suboption and help panels on first run
  xconfig: fix 'Show Debug' functionality
  kconfig/nconf: Fix hang when editing symbol with a long prompt
  Scripts: kconfig: nconf: fix _GNU_SOURCE redefined warning
2016-12-17 16:30:24 -08:00
Linus Torvalds
41e0e24b45 Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild updates from Michal Marek:

 - prototypes for x86 asm-exported symbols (Adam Borowski) and a warning
   about missing CRCs (Nick Piggin)

 - asm-exports fix for LTO (Nicolas Pitre)

 - thin archives improvements (Nick Piggin)

 - linker script fix for CONFIG_LD_DEAD_CODE_DATA_ELIMINATION (Nick
   Piggin)

 - genksyms support for __builtin_va_list keyword

 - misc minor fixes

* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  x86/kbuild: enable modversions for symbols exported from asm
  kbuild: fix scripts/adjust_autoksyms.sh* for the no modules case
  scripts/kallsyms: remove last remnants of --page-offset option
  make use of make variable CURDIR instead of calling pwd
  kbuild: cmd_export_list: tighten the sed script
  kbuild: minor improvement for thin archives build
  kbuild: modpost warn if export version crc is missing
  kbuild: keep data tables through dead code elimination
  kbuild: improve linker compatibility with lib-ksyms.o build
  genksyms: Regenerate parser
  kbuild/genksyms: handle va_list type
  kbuild: thin archives for multi-y targets
  kbuild: kallsyms allow 3-pass generation if symbols size has changed
2016-12-17 16:24:13 -08:00
Linus Torvalds
de399813b5 powerpc updates for 4.10
Highlights include:
 
  - Support for the kexec_file_load() syscall, which is a prereq for secure and
    trusted boot.
 
  - Prevent kernel execution of userspace on P9 Radix (similar to SMEP/PXN).
 
  - Sort the exception tables at build time, to save time at boot, and store
    them as relative offsets to save space in the kernel image & memory.
 
  - Allow building the kernel with thin archives, which should allow us to build
    an allyesconfig once some other fixes land.
 
  - Build fixes to allow us to correctly rebuild when changing the kernel endian
    from big to little or vice versa.
 
  - Plumbing so that we can avoid doing a full mm TLB flush on P9 Radix.
 
  - Initial stack protector support (-fstack-protector).
 
  - Support for dumping the radix (aka. Linux) and hash page tables via debugfs.
 
  - Fix an oops in cxl coredump generation when cxl_get_fd() is used.
 
  - Freescale updates from Scott: "Highlights include 8xx hugepage support,
    qbman fixes/cleanup, device tree updates, and some misc cleanup."
 
  - Many and varied fixes and minor enhancements as always.
 
 Thanks to:
   Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Anshuman Khandual,
   Anton Blanchard, Balbir Singh, Bartlomiej Zolnierkiewicz, Christophe Jaillet,
   Christophe Leroy, Denis Kirjanov, Elimar Riesebieter, Frederic Barrat,
   Gautham R. Shenoy, Geliang Tang, Geoff Levand, Jack Miller, Johan Hovold,
   Lars-Peter Clausen, Libin, Madhavan Srinivasan, Michael Neuling, Nathan
   Fontenot, Naveen N. Rao, Nicholas Piggin, Pan Xinhui, Peter Senna Tschudin,
   Rashmica Gupta, Rui Teng, Russell Currey, Scott Wood, Simon Guo, Suraj
   Jitindar Singh, Thiago Jung Bauermann, Tobias Klauser, Vaibhav Jain.
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Merge tag 'powerpc-4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Highlights include:

   - Support for the kexec_file_load() syscall, which is a prereq for
     secure and trusted boot.

   - Prevent kernel execution of userspace on P9 Radix (similar to
     SMEP/PXN).

   - Sort the exception tables at build time, to save time at boot, and
     store them as relative offsets to save space in the kernel image &
     memory.

   - Allow building the kernel with thin archives, which should allow us
     to build an allyesconfig once some other fixes land.

   - Build fixes to allow us to correctly rebuild when changing the
     kernel endian from big to little or vice versa.

   - Plumbing so that we can avoid doing a full mm TLB flush on P9
     Radix.

   - Initial stack protector support (-fstack-protector).

   - Support for dumping the radix (aka. Linux) and hash page tables via
     debugfs.

   - Fix an oops in cxl coredump generation when cxl_get_fd() is used.

   - Freescale updates from Scott: "Highlights include 8xx hugepage
     support, qbman fixes/cleanup, device tree updates, and some misc
     cleanup."

   - Many and varied fixes and minor enhancements as always.

  Thanks to:
    Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Anshuman
    Khandual, Anton Blanchard, Balbir Singh, Bartlomiej Zolnierkiewicz,
    Christophe Jaillet, Christophe Leroy, Denis Kirjanov, Elimar
    Riesebieter, Frederic Barrat, Gautham R. Shenoy, Geliang Tang, Geoff
    Levand, Jack Miller, Johan Hovold, Lars-Peter Clausen, Libin,
    Madhavan Srinivasan, Michael Neuling, Nathan Fontenot, Naveen N.
    Rao, Nicholas Piggin, Pan Xinhui, Peter Senna Tschudin, Rashmica
    Gupta, Rui Teng, Russell Currey, Scott Wood, Simon Guo, Suraj
    Jitindar Singh, Thiago Jung Bauermann, Tobias Klauser, Vaibhav Jain"

[ And thanks to Michael, who took time off from a new baby to get this
  pull request done.   - Linus ]

* tag 'powerpc-4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (174 commits)
  powerpc/fsl/dts: add FMan node for t1042d4rdb
  powerpc/fsl/dts: add sg_2500_aqr105_phy4 alias on t1024rdb
  powerpc/fsl/dts: add QMan and BMan nodes on t1024
  powerpc/fsl/dts: add QMan and BMan nodes on t1023
  soc/fsl/qman: test: use DEFINE_SPINLOCK()
  powerpc/fsl-lbc: use DEFINE_SPINLOCK()
  powerpc/8xx: Implement support of hugepages
  powerpc: get hugetlbpage handling more generic
  powerpc: port 64 bits pgtable_cache to 32 bits
  powerpc/boot: Request no dynamic linker for boot wrapper
  soc/fsl/bman: Use resource_size instead of computation
  soc/fsl/qe: use builtin_platform_driver
  powerpc/fsl_pmc: use builtin_platform_driver
  powerpc/83xx/suspend: use builtin_platform_driver
  powerpc/ftrace: Fix the comments for ftrace_modify_code
  powerpc/perf: macros for power9 format encoding
  powerpc/perf: power9 raw event format encoding
  powerpc/perf: update attribute_group data structure
  powerpc/perf: factor out the event format field
  powerpc/mm/iommu, vfio/spapr: Put pages on VFIO container shutdown
  ...
2016-12-16 09:26:42 -08:00
Linus Torvalds
ed3c5a0be3 virtio, vhost: new device, fixes, speedups
This includes the new virtio crypto device, and fixes all over the
 place.  In particular enabling endian-ness checks for sparse builds
 found some bugs which this fixes.  And it appears that everyone is in
 agreement that disabling endian-ness sparse checks shouldn't be
 necessary any longer.
 
 So this enables them for everyone, and drops __CHECK_ENDIAN__
 and __bitwise__ APIs.
 
 IRQ handling in virtio has been refactored somewhat, the
 larger switch to IRQ_SHARED will have to wait as
 it proved too aggressive.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "virtio, vhost: new device, fixes, speedups

  This includes the new virtio crypto device, and fixes all over the
  place. In particular enabling endian-ness checks for sparse builds
  found some bugs which this fixes. And it appears that everyone is in
  agreement that disabling endian-ness sparse checks shouldn't be
  necessary any longer.

  So this enables them for everyone, and drops the __CHECK_ENDIAN__ and
  __bitwise__ APIs.

  IRQ handling in virtio has been refactored somewhat, the larger switch
  to IRQ_SHARED will have to wait as it proved too aggressive"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (34 commits)
  Makefile: drop -D__CHECK_ENDIAN__ from cflags
  fs/logfs: drop __CHECK_ENDIAN__
  Documentation/sparse: drop __CHECK_ENDIAN__
  linux: drop __bitwise__ everywhere
  checkpatch: replace __bitwise__ with __bitwise
  Documentation/sparse: drop __bitwise__
  tools: enable endian checks for all sparse builds
  linux/types.h: enable endian checks for all sparse builds
  virtio_mmio: Set dev.release() to avoid warning
  vhost: remove unused feature bit
  virtio_ring: fix description of virtqueue_get_buf
  vhost/scsi: Remove unused but set variable
  tools/virtio: use {READ,WRITE}_ONCE() in uaccess.h
  vringh: kill off ACCESS_ONCE()
  tools/virtio: fix READ_ONCE()
  crypto: add virtio-crypto driver
  vhost: cache used event for better performance
  vsock: lookup and setup guest_cid inside vhost_vsock_lock
  virtio_pci: split vp_try_to_find_vqs into INTx and MSI-X variants
  virtio_pci: merge vp_free_vectors into vp_del_vqs
  ...
2016-12-15 18:13:41 -08:00
Michael S. Tsirkin
46d832f5e2 checkpatch: replace __bitwise__ with __bitwise
__bitwise__ is an implementation detail now.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-12-16 00:13:40 +02:00
Linus Torvalds
179a7ba680 This release has a few updates:
o STM can hook into the function tracer
  o Function filtering now supports more advance glob matching
  o Ftrace selftests updates and added tests
  o Softirq tag in traces now show only softirqs
  o ARM nop added to non traced locations at compile time
  o New trace_marker_raw file that allows for binary input
  o Optimizations to the ring buffer
  o Removal of kmap in trace_marker
  o Wakeup and irqsoff tracers now adhere to the set_graph_notrace file
  o Other various fixes and clean ups
 
 Note, there are two patches marked for stable. These were discovered
 near the end of the 4.9 rc release cycle. By the time I had them tested
 it was just a matter of days before 4.9 would be released, and I
 figured I would just submit them in the merge window. They are old
 bugs and not critical. Nothing non-root could abuse.
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Merge tag 'trace-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from Steven Rostedt:
 "This release has a few updates:

   - STM can hook into the function tracer
   - Function filtering now supports more advance glob matching
   - Ftrace selftests updates and added tests
   - Softirq tag in traces now show only softirqs
   - ARM nop added to non traced locations at compile time
   - New trace_marker_raw file that allows for binary input
   - Optimizations to the ring buffer
   - Removal of kmap in trace_marker
   - Wakeup and irqsoff tracers now adhere to the set_graph_notrace file
   - Other various fixes and clean ups"

* tag 'trace-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (42 commits)
  selftests: ftrace: Shift down default message verbosity
  kprobes/trace: Fix kprobe selftest for newer gcc
  tracing/kprobes: Add a helper method to return number of probe hits
  tracing/rb: Init the CPU mask on allocation
  tracing: Use SOFTIRQ_OFFSET for softirq dectection for more accurate results
  tracing/fgraph: Have wakeup and irqsoff tracers ignore graph functions too
  fgraph: Handle a case where a tracer ignores set_graph_notrace
  tracing: Replace kmap with copy_from_user() in trace_marker writing
  ftrace/x86_32: Set ftrace_stub to weak to prevent gcc from using short jumps to it
  tracing: Allow benchmark to be enabled at early_initcall()
  tracing: Have system enable return error if one of the events fail
  tracing: Do not start benchmark on boot up
  tracing: Have the reg function allow to fail
  ring-buffer: Force rb_end_commit() and rb_set_commit_to_write() inline
  ring-buffer: Froce rb_update_write_stamp() to be inlined
  ring-buffer: Force inline of hotpath helper functions
  tracing: Make __buffer_unlock_commit() always_inline
  tracing: Make tracepoint_printk a static_key
  ring-buffer: Always inline rb_event_data()
  ring-buffer: Make rb_reserve_next_event() always inlined
  ...
2016-12-15 13:49:34 -08:00
Linus Torvalds
19c75bcbe0 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
 "This fixes the following issues:

   - a crash regression in the new skcipher walker

   - incorrect return value in public_key_verify_signature

   - fix for in-place signing in the sign-file utility"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: skcipher - fix crash in virtual walk
  sign-file: Fix inplace signing when src and dst names are both specified
  crypto: asymmetric_keys - set error code on failure
2016-12-15 11:41:37 -08:00
Linus Torvalds
4d98ead183 Modules updates for v4.10
Summary of modules changes for the 4.10 merge window:
 
 * The rodata= cmdline parameter has been extended to additionally
   apply to module mappings
 
 * Fix a hard to hit race between module loader error/clean up
   handling and ftrace registration
 
 * Some code cleanups, notably panic.c and modules code use a
   unified taint_flags table now. This is much cleaner than
   duplicating the taint flag code in modules.c
 
 Signed-off-by: Jessica Yu <jeyu@redhat.com>
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Merge tag 'modules-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull modules updates from Jessica Yu:
 "Summary of modules changes for the 4.10 merge window:

   - The rodata= cmdline parameter has been extended to additionally
     apply to module mappings

   - Fix a hard to hit race between module loader error/clean up
     handling and ftrace registration

   - Some code cleanups, notably panic.c and modules code use a unified
     taint_flags table now. This is much cleaner than duplicating the
     taint flag code in modules.c"

* tag 'modules-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module: fix DEBUG_SET_MODULE_RONX typo
  module: extend 'rodata=off' boot cmdline parameter to module mappings
  module: Fix a comment above strong_try_module_get()
  module: When modifying a module's text ignore modules which are going away too
  module: Ensure a module's state is set accordingly during module coming cleanup code
  module: remove trailing whitespace
  taint/module: Clean up global and module taint flags handling
  modpost: free allocated memory
2016-12-14 20:12:43 -08:00
Linus Torvalds
a9042defa2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial updates from Jiri Kosina.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial:
  NTB: correct ntb_spad_count comment typo
  misc: ibmasm: fix typo in error message
  Remove references to dead make variable LINUX_INCLUDE
  Remove last traces of ikconfig.h
  treewide: Fix printk() message errors
  Documentation/device-mapper: s/getsize/getsz/
2016-12-14 11:12:25 -08:00
Alex Yashchenko
efcae7c931 sign-file: Fix inplace signing when src and dst names are both specified
When src and dst both are specified and they point to the same file
the sign-file utility will write only signature to the dst file and
the module (.ko file) body will not be written.
That happens because we open the same file with "rb" and "wb" flags,
from fopen man:

 w      Truncate file to zero length or create text file for writing.
The stream is positioned at the beginning of the file.
...
	bm = BIO_new_file(module_name, "rb");
...
	bd = BIO_new_file(dest_name, "wb");
...
	while ((n = BIO_read(bm, buf, sizeof(buf))),
	       n > 0) {
		ERR(BIO_write(bd, buf, n) < 0, "%s", dest_name);
	}
...

Signed-off-by: Alex Yashchenko <alexhoppus111@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-12-14 18:33:14 +08:00
Masanari Iida
9165dabb25 treewide: Fix printk() message errors
This patch fix spelling typos in printk and kconfig.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-12-14 10:54:27 +01:00
Linus Torvalds
b78b499a67 Char/Misc driver patches for 4.10-rc1
Here's the big char/misc driver patches for 4.10-rc1.  Lots of tiny
 changes over lots of "minor" driver subsystems, the largest being some
 new FPGA drivers.  Other than that, a few other new drivers, but no new
 driver subsystems added for this kernel cycle, a nice change.
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here's the big char/misc driver patches for 4.10-rc1. Lots of tiny
  changes over lots of "minor" driver subsystems, the largest being some
  new FPGA drivers. Other than that, a few other new drivers, but no new
  driver subsystems added for this kernel cycle, a nice change.

  All of these have been in linux-next with no reported issues"

* tag 'char-misc-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (107 commits)
  uio-hv-generic: store physical addresses instead of virtual
  Tools: hv: kvp: configurable external scripts path
  uio-hv-generic: new userspace i/o driver for VMBus
  vmbus: add support for dynamic device id's
  hv: change clockevents unbind tactics
  hv: acquire vmbus_connection.channel_mutex in vmbus_free_channels()
  hyperv: Fix spelling of HV_UNKOWN
  mei: bus: enable non-blocking RX
  mei: fix the back to back interrupt handling
  mei: synchronize irq before initiating a reset.
  VME: Remove shutdown entry from vme_driver
  auxdisplay: ht16k33: select framebuffer helper modules
  MAINTAINERS: add git url for fpga
  fpga: Clarify how write_init works streaming modes
  fpga zynq: Fix incorrect ISR state on bootup
  fpga zynq: Remove priv->dev
  fpga zynq: Add missing \n to messages
  fpga: Add COMPILE_TEST to all drivers
  uio: pruss: add clk_disable()
  char/pcmcia: add some error checking in scr24x_read()
  ...
2016-12-13 12:11:01 -08:00
Linus Torvalds
e7aa8c2eb1 These are the documentation changes for 4.10.
It's another busy cycle for the docs tree, as the sphinx conversion
 continues.  Highlights include:
 
  - Further work on PDF output, which remains a bit of a pain but should be
    more solid now.
 
  - Five more DocBook template files converted to Sphinx.  Only 27 to go...
    Lots of plain-text files have also been converted and integrated.
 
  - Images in binary formats have been replaced with more source-friendly
    versions.
 
  - Various bits of organizational work, including the renaming of various
    files discussed at the kernel summit.
 
  - New documentation for the device_link mechanism.
 
 ...and, of course, lots of typo fixes and small updates.
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Merge tag 'docs-4.10' of git://git.lwn.net/linux

Pull documentation update from Jonathan Corbet:
 "These are the documentation changes for 4.10.

  It's another busy cycle for the docs tree, as the sphinx conversion
  continues. Highlights include:

   - Further work on PDF output, which remains a bit of a pain but
     should be more solid now.

   - Five more DocBook template files converted to Sphinx. Only 27 to
     go... Lots of plain-text files have also been converted and
     integrated.

   - Images in binary formats have been replaced with more
     source-friendly versions.

   - Various bits of organizational work, including the renaming of
     various files discussed at the kernel summit.

   - New documentation for the device_link mechanism.

  ... and, of course, lots of typo fixes and small updates"

* tag 'docs-4.10' of git://git.lwn.net/linux: (193 commits)
  dma-buf: Extract dma-buf.rst
  Update Documentation/00-INDEX
  docs: 00-INDEX: document directories/files with no docs
  docs: 00-INDEX: remove non-existing entries
  docs: 00-INDEX: add missing entries for documentation files/dirs
  docs: 00-INDEX: consolidate process/ and admin-guide/ description
  scripts: add a script to check if Documentation/00-INDEX is sane
  Docs: change sh -> awk in REPORTING-BUGS
  Documentation/core-api/device_link: Add initial documentation
  core-api: remove an unexpected unident
  ppc/idle: Add documentation for powersave=off
  Doc: Correct typo, "Introdution" => "Introduction"
  Documentation/atomic_ops.txt: convert to ReST markup
  Documentation/local_ops.txt: convert to ReST markup
  Documentation/assoc_array.txt: convert to ReST markup
  docs-rst: parse-headers.pl: cleanup the documentation
  docs-rst: fix media cleandocs target
  docs-rst: media/Makefile: reorganize the rules
  docs-rst: media: build SVG from graphviz files
  docs-rst: replace bayer.png by a SVG image
  ...
2016-12-12 21:58:13 -08:00
Linus Torvalds
e34bac726d Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton:

 - various misc bits

 - most of MM (quite a lot of MM material is awaiting the merge of
   linux-next dependencies)

 - kasan

 - printk updates

 - procfs updates

 - MAINTAINERS

 - /lib updates

 - checkpatch updates

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (123 commits)
  init: reduce rootwait polling interval time to 5ms
  binfmt_elf: use vmalloc() for allocation of vma_filesz
  checkpatch: don't emit unified-diff error for rename-only patches
  checkpatch: don't check c99 types like uint8_t under tools
  checkpatch: avoid multiple line dereferences
  checkpatch: don't check .pl files, improve absolute path commit log test
  scripts/checkpatch.pl: fix spelling
  checkpatch: don't try to get maintained status when --no-tree is given
  lib/ida: document locking requirements a bit better
  lib/rbtree.c: fix typo in comment of ____rb_erase_color
  lib/Kconfig.debug: make CONFIG_STRICT_DEVMEM depend on CONFIG_DEVMEM
  MAINTAINERS: add drm and drm/i915 irc channels
  MAINTAINERS: add "C:" for URI for chat where developers hang out
  MAINTAINERS: add drm and drm/i915 bug filing info
  MAINTAINERS: add "B:" for URI where to file bugs
  get_maintainer: look for arbitrary letter prefixes in sections
  printk: add Kconfig option to set default console loglevel
  printk/sound: handle more message headers
  printk/btrfs: handle more message headers
  printk/kdb: handle more message headers
  ...
2016-12-12 20:50:02 -08:00
Joe Perches
fe6bce8d30 treewide: Make remaining source files non-executable
.c and .h source files should not be executable, change
the permissions to 0644.

[ This would normally go through Andrew Morton, but his ancient
  patch-based toolchain doesn't do permission changes ]

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 20:41:52 -08:00
Linus Torvalds
9465d9cc31 Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
 "The time/timekeeping/timer folks deliver with this update:

   - Fix a reintroduced signed/unsigned issue and cleanup the whole
     signed/unsigned mess in the timekeeping core so this wont happen
     accidentaly again.

   - Add a new trace clock based on boot time

   - Prevent injection of random sleep times when PM tracing abuses the
     RTC for storage

   - Make posix timers configurable for real tiny systems

   - Add tracepoints for the alarm timer subsystem so timer based
     suspend wakeups can be instrumented

   - The usual pile of fixes and updates to core and drivers"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  timekeeping: Use mul_u64_u32_shr() instead of open coding it
  timekeeping: Get rid of pointless typecasts
  timekeeping: Make the conversion call chain consistently unsigned
  timekeeping_Force_unsigned_clocksource_to_nanoseconds_conversion
  alarmtimer: Add tracepoints for alarm timers
  trace: Update documentation for mono, mono_raw and boot clock
  trace: Add an option for boot clock as trace clock
  timekeeping: Add a fast and NMI safe boot clock
  timekeeping/clocksource_cyc2ns: Document intended range limitation
  timekeeping: Ignore the bogus sleep time if pm_trace is enabled
  selftests/timers: Fix spelling mistake "Asyncrhonous" -> "Asynchronous"
  clocksource/drivers/bcm2835_timer: Unmap region obtained by of_iomap
  clocksource/drivers/arm_arch_timer: Map frame with of_io_request_and_map()
  arm64: dts: rockchip: Arch counter doesn't tick in system suspend
  clocksource/drivers/arm_arch_timer: Don't assume clock runs in suspend
  posix-timers: Make them configurable
  posix_cpu_timers: Move the add_device_randomness() call to a proper place
  timer: Move sys_alarm from timer.c to itimer.c
  ptp_clock: Allow for it to be optional
  Kconfig: Regenerate *.c_shipped files after previous changes
  ...
2016-12-12 19:56:15 -08:00
Andrew Jeffery
a82603a832 checkpatch: don't emit unified-diff error for rename-only patches
I generated a patch with `git format-patch` which checkpatch thinks is
invalid:

    $ ./scripts/checkpatch.pl lpc-dt/0006-mfd-dt-Move-syscon-bindings-to-syscon-subdirectory.patch
    WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
     Documentation/devicetree/bindings/mfd/{ => syscon}/aspeed-scu.txt         | 0

    ERROR: Does not appear to be a unified-diff format patch

    total: 1 errors, 1 warnings, 0 lines checked

    NOTE: For some of the reported defects, checkpatch may be able to
          mechanically convert to the typical style using --fix or --fix-inplace.

    lpc-dt/0006-mfd-dt-Move-syscon-bindings-to-syscon-subdirectory.patch has style problems, please review.

    NOTE: If any of the errors are false positives, please report
          them to the maintainer, see CHECKPATCH in MAINTAINERS.

The patch in question was all renames with no edits, giving 100%
similarity and thus no diff markers.

Set '$is_patch = 1;' in the add/remove/rename detection to avoid
generating spurious warnings.

Link: http://lkml.kernel.org/r/20161205232224.22685-1-andrew@aj.id.au
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:10 -08:00
Tomas Winkler
fd39f904b1 checkpatch: don't check c99 types like uint8_t under tools
Tools contains user space code so uintX_t types are just fine.

Link: http://lkml.kernel.org/r/1479286379-853-1-git-send-email-tomas.winkler@intel.com
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Acked-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:10 -08:00
Joe Perches
11ca40a0f8 checkpatch: avoid multiple line dereferences
Code that puts a single dereferencing identifier on multiple lines like:

     struct_identifier->member[index].
	member = <foo>;

is generally hard to follow.

Prefer that dereferencing identifiers be single line.

Link: http://lkml.kernel.org/r/e9c191ae3f41bedc8ffd5c0fbcc5a1cec1d1d2df.1478120869.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:10 -08:00
Joe Perches
d6430f7180 checkpatch: don't check .pl files, improve absolute path commit log test
perl files (*.pl) are mostly inappropriate to check coding styles so
exempt them from long line checks and various .[ch] file type tests.

And as well, only scan absolute paths in the commit log, not in the
patch.

Link: http://lkml.kernel.org/r/85b101d50acafe6c0261d9f7df283c827da52c4a.1477340110.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:10 -08:00
Andrew Morton
224236d9c3 scripts/checkpatch.pl: fix spelling
s/preceeded/preceded/

Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:10 -08:00
Jerome Forissier
f2c19c2f38 checkpatch: don't try to get maintained status when --no-tree is given
Fixes the following warning:

  Use of uninitialized value $root in concatenation (.) or string at /path/to/checkpatch.pl line 764.

Link: http://lkml.kernel.org/r/1476719709-16668-1-git-send-email-jerome.forissier@linaro.org
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:10 -08:00
Joe Perches
03aed214b2 get_maintainer: look for arbitrary letter prefixes in sections
Jani Nikula proposes patches to add a few new letter prefixes for "B:"
bug reporting and "C:" maintainer chatting to the various sections of
MAINTAINERS.

Add a generic mechanism to get_maintainer.pl to find sections that have
any combination of "[A-Z]" letter prefix types in a section.

Link: http://lkml.kernel.org/r/1477332323.1984.8.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Dave Airlie <airlied@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:09 -08:00
Andrey Ryabinin
c5caf21ab0 kasan: turn on -fsanitize-address-use-after-scope
In the upcoming gcc7 release, the -fsanitize=kernel-address option at
first implied new -fsanitize-address-use-after-scope option.  This would
cause link errors on older kernels because they don't have two new
functions required for use-after-scope support.  Therefore, gcc7 changed
default to -fno-sanitize-address-use-after-scope.

Now the kernel has everything required for that feature since commit
828347f8f9 ("kasan: support use-after-scope detection").  So, to make it
work, we just have to enable use-after-scope in CFLAGS.

Link: http://lkml.kernel.org/r/1481207977-28654-1-git-send-email-aryabinin@virtuozzo.com
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:09 -08:00
Sam Protsenko
779d5eb375 scripts/tags.sh: handle OMAP platforms properly
When SUBARCH is "omap1" or "omap2", plat-omap/ directory must be
indexed.  Handle this special case properly.

While at it, check if mach- directory exists at all.

Link: http://lkml.kernel.org/r/20161202122148.15001-1-joe.skb7@gmail.com
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Michal Marek <mmarek@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:06 -08:00
Alexey Dobriyan
0d7bbb4364 scripts/bloat-o-meter: compile .NUMBER regex
Every often used regex is better be compiled in Python.

Speedup is about ~9.8% (whee!)

    $ perf stat -r 16 taskset -c 15 ./scripts/bloat-o-meter ../vmlinux-000 ../obj/vmlinux >/dev/null
    7.091202853 seconds time elapsed                         ( +-  0.15% )

    +re.compile
    6.397564973 seconds time elapsed                         ( +-  0.34% )

Link: http://lkml.kernel.org/r/20161119004417.GB1200@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:06 -08:00
Alexey Dobriyan
3af06fd96a scripts/bloat-o-meter: don't use readlines()
readlines() conses whole list before doing anything which is slower for
big object files.  Use per line iterator.

Speed up is ~2% on "allyesconfig" type of kernel.

    $ perf stat -r 16 taskset -c 15 ./scripts/bloat-o-meter ../vmlinux-000 ../obj/vmlinux >/dev/null
	...

  Before:  7.247708646 seconds time elapsed                ( +-  0.28% )
  After:   7.091202853 seconds time elapsed                ( +-  0.15% )

Link: http://lkml.kernel.org/r/20161119004143.GA1200@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:06 -08:00
Linus Torvalds
5645688f9d Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar:
 "The main changes in this development cycle were:

   - a large number of call stack dumping/printing improvements: higher
     robustness, better cross-context dumping, improved output, etc.
     (Josh Poimboeuf)

   - vDSO getcpu() performance improvement for future Intel CPUs with
     the RDPID instruction (Andy Lutomirski)

   - add two new Intel AVX512 features and the CPUID support
     infrastructure for it: AVX512IFMA and AVX512VBMI. (Gayatri Kammela,
     He Chen)

   - more copy-user unification (Borislav Petkov)

   - entry code assembly macro simplifications (Alexander Kuleshov)

   - vDSO C/R support improvements (Dmitry Safonov)

   - misc fixes and cleanups (Borislav Petkov, Paul Bolle)"

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
  scripts/decode_stacktrace.sh: Fix address line detection on x86
  x86/boot/64: Use defines for page size
  x86/dumpstack: Make stack name tags more comprehensible
  selftests/x86: Add test_vdso to test getcpu()
  x86/vdso: Use RDPID in preference to LSL when available
  x86/dumpstack: Handle NULL stack pointer in show_trace_log_lvl()
  x86/cpufeatures: Enable new AVX512 cpu features
  x86/cpuid: Provide get_scattered_cpuid_leaf()
  x86/cpuid: Cleanup cpuid_regs definitions
  x86/copy_user: Unify the code by removing the 64-bit asm _copy_*_user() variants
  x86/unwind: Ensure stack grows down
  x86/vdso: Set vDSO pointer only after success
  x86/prctl/uapi: Remove #ifdef for CHECKPOINT_RESTORE
  x86/unwind: Detect bad stack return address
  x86/dumpstack: Warn on stack recursion
  x86/unwind: Warn on bad frame pointer
  x86/decoder: Use stderr if insn sanity test fails
  x86/decoder: Use stdout if insn decoder test is successful
  mm/page_alloc: Remove kernel address exposure in free_reserved_area()
  x86/dumpstack: Remove raw stack dump
  ...
2016-12-12 13:49:57 -08:00
Nicolas Pitre
d073472ac2 kbuild: fix scripts/adjust_autoksyms.sh* for the no modules case
When CONFIG_TRIM_UNUSED_KSYMS=y and no modules are actually selected,
the adjust_autoksyms.sh script fails with:

sed: can't read .tmp_versions/*.mod: No such file or directory

Let's cope with that case gracefully.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11 22:30:10 +01:00
Boris Barbulovski
83c3a1bad2 xconfig: fix missing suboption and help panels on first run
qconfig initial slider sizes fix.

On first `make xconfig`, suboption and help panels were hidden.
Now we properly detect the first run, and show those panels.

Reported-by: Jason Vas Dias <jason.vas.dias@gmail.com>
Signed-off-by: Boris Barbulovski <bbarbulovski@gmail.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11 21:40:54 +01:00
Boris Barbulovski
e039303ff7 xconfig: fix 'Show Debug' functionality
xconfig - Fix missing 'Show Debug' functionality.

xconfig Help mentions 'Show Debug Info' but it was missing from any
menu.

* Add 'Show debug' menu to the main menu.
* Properly load showDebug settings.

Reported-by: Jason Vas Dias <jason.vas.dias@gmail.com>
Signed-off-by: Boris Barbulovski <bbarbulovski@gmail.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11 21:39:25 +01:00
Michal Marek
ff5b1ce6b2 Merge branch 'kbuild/rc-fixes' into kbuild/misc 2016-12-11 21:20:34 +01:00
Ingo Molnar
6f38751510 Merge branch 'linus' into locking/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-12-11 13:07:13 +01:00
Ard Biesheuvel
0f66784ae2 scripts/kallsyms: remove last remnants of --page-offset option
The implementation of the --page-offset kallsyms command line option has
been removed, so remove it from the usage string as well.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11 12:46:15 +01:00
Ben Hutchings
79e51b5c2d kconfig/nconf: Fix hang when editing symbol with a long prompt
Currently it is impossible to edit the value of a config symbol with a
prompt longer than (terminal width - 2) characters.  dialog_inputbox()
calculates a negative x-offset for the input window and newwin() fails
as this is invalid.  It also doesn't check for this failure, so it
busy-loops calling wgetch(NULL) which immediately returns -1.

The additions in the offset calculations also don't match the intended
size of the window.

Limit the window size and calculate the offset similarly to
show_scroll_win().

Cc: stable <stable@vger.kernel.org>
Fixes: 692d97c380 ("kconfig: new configuration interface (nconfig)")
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
2016-12-11 12:26:42 +01:00
Vaishali Thakkar
d1e774f49f Coccinelle: misc: Add support for devm variant in all modes
Add missing support for the devm_request_threaded_irq in
the rules of context, report and org modes.

Misc:
----
To be consistent with other scripts, change confidence level
of the script to 'Moderate'.

Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11 12:08:26 +01:00
Vaishali Thakkar
35b303ae36 Coccinelle: misc: Improve the result given by context mode
To eliminate false positives given by the context mode, add
necessary arguments for the function request_threaded_irq.

Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11 12:08:26 +01:00
Vaishali Thakkar
dca24c4544 Coccinelle: misc: Improve the matching of rules
Currently because of the left associativity of the operators, pattern
IRQF_ONESHOT | flags does not match with the pattern when we have more
than one flag after the disjunction. This eventually results in giving
false positives by the script. This patch eliminates these FPs by
improving the rule.

Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11 12:08:26 +01:00
Anton Tikhomirov
51a5f81079 kbuild/mkspec: avoid using brace expansion
Brace expansion might not work properly if _buildshell RPM macro
points to a shell other than bash. Particularly, with _bulidshell
defined to /bin/dash it leads to broken build and source symlinks.

Signed-off-by: Anton Tikhomirov <anton.tikhomirov@cdnetworks.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11 12:07:00 +01:00
Andrew F. Davis
75238b9e6a Coccinelle: Add misc/boolconv.cocci
Add a script to check for unneeded conversions to bool.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11 12:07:00 +01:00
Nicolas Pitre
76bee23411 kbuild: cmd_export_list: tighten the sed script
When LTO is used, some ___ksymtab_string sections are seen by this sed
script, creating lines containing a single ) such as:

EXPORT(foo)
)
)
EXPORT(bar)

Let's make it so the + character is also required for any line to be
printed.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11 11:51:43 +01:00
Mauro Carvalho Chehab
f15c323397 scripts: add a script to check if Documentation/00-INDEX is sane
It is easy to forget adding/removing entries at the
Documentation/00-INDEX file. In a matter of fact, even before
ReST conversion, people use to forget adding things here, as
there are lots of missing stuff out there.

Now that we're doing a hard work converting entries to ReST,
and while this hole file is not outdated, it is good to have
some tool that would help to verify that this file is kept
updated.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-12-05 14:21:24 -07:00
Nicolas Pitre
d3fc425e81 kbuild: make sure autoksyms.h exists early
Some people are able to trigger a race where autoksyms.h is used before
its empty version is even created.  Let's create it at the same time as
the directory holding it is created.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Tested-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-01 10:19:22 -08:00
Nicholas Piggin
abac4c8973 kbuild: minor improvement for thin archives build
The root built-in.o archive is currently generated before all object
files are built for the final link, due to final build of init/ after
version update. In practice it seems like it doesn't matter because
the archive symbol table does not change, but it is more logical to
create the final archive as the last step.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29 15:58:57 +01:00
Nicholas Piggin
d8c1eb86e9 kbuild: modpost warn if export version crc is missing
This catches the failing ceph CRC on with:

    LD      vmlinux.o
    MODPOST vmlinux.o
  WARNING: EXPORT symbol "ceph_monc_do_statfs" [vmlinux] version
  generation failed, symbol will not be versioned.

When the modules referring to exported symbols are built, there is an
existing warning for missing CRC, but it's not always the case such
any such module will be built, and in any case it is useful to get a
warning at the source.

This gets a little verbose with CONFIG_DEBUG_SECTION_MISMATCH,
producing a warning with each object linked, but I didn't think
that warranted extra complexity to avoid.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29 15:58:57 +01:00
Nicholas Piggin
9da2f584b5 kbuild: improve linker compatibility with lib-ksyms.o build
lib-ksyms.o is created by linking an empty input file with a linker
script containing the interesting bits. Currently the empty input file
is an archive containing nothing, however this causes the gold linker
to segfault.

I have opened a bug against gold

  https://sourceware.org/bugzilla/show_bug.cgi?id=20767

However this can be worked around by assembling an empty file to link
with instead. The resulting lib-ksyms.o is slightly larger (seemingly
due to empty .text, .data, .bss setions added), but final linked
output should not be changed.

Reported-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29 15:58:57 +01:00
Michal Marek
7e441fe759 genksyms: Regenerate parser
Regenerate the keyword table and parser after commit 0efdb22823
("kbuild/genksyms: handle va_list type").

Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29 15:57:40 +01:00
Nicholas Piggin
0efdb22823 kbuild/genksyms: handle va_list type
genksyms currently does not handle va_list. Add the __builtin_va_list
keyword as a type. This reduces the amount of syntax errors thrown,
but so far no export symbol has a type with a va_list argument, so
there is currently no bug in the end result.

Note: this patch does not regenerate shipped parser files.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29 15:53:19 +01:00
Nicholas Piggin
fe026a851b kbuild: thin archives for multi-y targets
THIN_ARCHIVES builds archives for built-in.o targets, have it build
multi-y targets as archives as well.

This saves another ~15% of the size of intermediate artifacts in the
build tree. After this patch, the linker is only used in final link,
and special cases like vdsos.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29 15:53:19 +01:00
Nicholas Piggin
7e2b37c971 kbuild: kallsyms allow 3-pass generation if symbols size has changed
kallsyms generation is not foolproof, due to some linkers adding
symbols (e.g., branch trampolines) when a binary size changes.
Have it attempt a 3rd pass automatically if the kallsyms size changes
in the 2nd pass.

This allows powerpc64 allyesconfig to build without adding another
pass when it's not required.

This can be solved other ways by directing the linker not to add labels
on branch stubs, or to move kallsyms near the end of the image. The
former is undesirable for debugging/tracing, and the latter is a more
significant change that requires more testing and review.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29 15:53:19 +01:00
Josh Poimboeuf
53938ee427 scripts/decode_stacktrace.sh: Fix address line detection on x86
Kirill reported that the decode_stacktrace.sh script was broken by the
following commit:

  bb5e5ce545 ("x86/dumpstack: Remove kernel text addresses from stack dump")

Fix it by updating the per-line absolute address check to also check for
function-based address lines like the following:

  write_sysrq_trigger+0x51/0x60

I didn't remove the check for absolute addresses because it's still
needed for ARM.

Reported-by: Kirill A. Shutemov <kirill@shutemov.name>
Tested-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sasha Levin <alexander.levin@verizon.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: bb5e5ce545 ("x86/dumpstack: Remove kernel text addresses from stack dump")
Link: http://lkml.kernel.org/r/20161128230635.4n2ofgawltgexgcg@treble
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-29 14:19:50 +01:00
Cheah Kok Cheong
0eb4734696 Scripts: kconfig: nconf: fix _GNU_SOURCE redefined warning
Fix below warning when make nconfig is run initially
or after make clean.

  HOSTCC  scripts/kconfig/nconf.o
scripts/kconfig/nconf.c:8:0: warning: "_GNU_SOURCE" redefined
 #define _GNU_SOURCE
 ^
<command-line>:0:0: note: this is the location of the previous definition

Signed-off-by: Cheah Kok Cheong <thrust73@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29 14:03:14 +01:00
Heinrich Schuchardt
c7d47f26df modpost: free allocated memory
valgrind complains that memory is not freed after allocation
with realloc() called from main() and write_dump().

So let us free the allocated memory properly.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Link: http://lkml.kernel.org/r/1470166981-6461-1-git-send-email-xypron.glpk@gmx.de
Signed-off-by: Jessica Yu <jeyu@redhat.com>
2016-11-26 11:18:01 -08:00
Adam Borowski
152b695d74 builddeb: fix cross-building to arm64 producing host-arch debs
Both Debian and kernel archs are "arm64" but UTS_MACHINE and gcc say
"aarch64".  Recognizing just the latter should be enough but let's
accept both in case something regresses again or an user sets
UTS_MACHINE=arm64.

Regressed in cfa88c7: arm64: Set UTS_MACHINE in the Makefile.

Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Acked-by: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-25 15:39:03 +01:00
Ingo Molnar
02cb689b2c Merge branch 'linus' into locking/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-22 12:37:38 +01:00
Linus Torvalds
04e36857d6 Merge branch 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild fixes from Michal Marek:
 "Here are some regression fixes for kbuild:

   - modversion support for exported asm symbols (Nick Piggin). The
     affected architectures need separate patches adding
     asm-prototypes.h.

   - fix rebuilds of lib-ksyms.o (Nick Piggin)

   - -fno-PIE builds (Sebastian Siewior and Borislav Petkov). This is
     not a kernel regression, but one of the Debian gcc package.
     Nevertheless, it's quite annoying, so I think it should go into
     mainline and stable now"

* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kbuild: Steal gcc's pie from the very beginning
  kbuild: be more careful about matching preprocessed asm ___EXPORT_SYMBOL
  x86/kexec: add -fno-PIE
  scripts/has-stack-protector: add -fno-PIE
  kbuild: add -fno-PIE
  kbuild: modversions for EXPORT_SYMBOL() for asm
  kbuild: prevent lib-ksyms.o rebuilds
2016-11-18 16:45:21 -08:00
Jonathan Corbet
917fef6f7e Linux 4.9-rc4
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Merge tag 'v4.9-rc4' into sound

Bring in -rc4 patches so I can successfully merge the sound doc changes.
2016-11-18 16:13:41 -07:00
Ingo Molnar
89a01c51cb Merge branch 'x86/cpufeature' into x86/asm, to pick up dependency
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-17 08:30:54 +01:00
Jani Nikula
0c9aa20957 kernel-doc: add support for one line inline struct member doc comments
kernel-doc supports documenting struct members "inline" since
a4c6ebede2 ("scripts/kernel-doc Allow struct arguments documentation
in struct body"). This requires the inline kernel-doc comments to have
the opening and closing comment markers (/** and */ respectively) on
lines of their own, even for short comments. For example:

	/**
	 * struct foo - struct documentation
	 */
	struct foo {
		/**
		 * @bar: member documentation
		 */
		int bar;
	};

Add support for one line inline comments:

	/**
	 * struct foo - struct documentation
	 */
	struct foo {
		/** @bar: member documentation */
		int bar;
	};

Note that mixing of the two in one doc comment is not allowed; either
both comment markers must be on lines of their own, or both must be on
the one line. This limitation keeps both the comments more uniform, and
kernel-doc less complicated.

Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-11-16 16:30:27 -07:00
Nicolas Pitre
32ce5ac867 Kconfig: Regenerate *.c_shipped files after previous changes
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Cc: Paul Bolle <pebolle@tiscali.nl>
Cc: linux-kbuild@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Michal Marek <mmarek@suse.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Edward Cree <ecree@solarflare.com>
Link: http://lkml.kernel.org/r/1478841010-28605-3-git-send-email-nicolas.pitre@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-11-16 09:26:33 +01:00
Nicolas Pitre
237e3ad0f1 Kconfig: Introduce the "imply" keyword
The "imply" keyword is a weak version of "select" where the target
config symbol can still be turned off, avoiding those pitfalls that come
with the "select" keyword.

This is useful e.g. with multiple drivers that want to indicate their
ability to hook into a secondary subsystem while allowing the user to
configure that subsystem out without also having to unset these drivers.

Currently, the same effect can almost be achieved with:

config DRIVER_A
	tristate

config DRIVER_B
	tristate

config DRIVER_C
	tristate

config DRIVER_D
	tristate

[...]

config SUBSYSTEM_X
	tristate
	default DRIVER_A || DRIVER_B || DRIVER_C || DRIVER_D || [...]

This is unwieldy to maintain especially with a large number of drivers.
Furthermore, there is no easy way to restrict the choice for SUBSYSTEM_X
to y or n, excluding m, when some drivers are built-in. The "select"
keyword allows for excluding m, but it excludes n as well. Hence
this "imply" keyword.  The above becomes:

config DRIVER_A
	tristate
	imply SUBSYSTEM_X

config DRIVER_B
	tristate
	imply SUBSYSTEM_X

[...]

config SUBSYSTEM_X
	tristate

This is much cleaner, and way more flexible than "select". SUBSYSTEM_X
can still be configured out, and it can be set as a module when none of
the drivers are configured in or all of them are modular.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Cc: Paul Bolle <pebolle@tiscali.nl>
Cc: linux-kbuild@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: Michal Marek <mmarek@suse.com>
Cc: Edward Cree <ecree@solarflare.com>
Link: http://lkml.kernel.org/r/1478841010-28605-2-git-send-email-nicolas.pitre@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-11-16 09:26:33 +01:00
Peter Zijlstra
0f5225b024 locking/mutex, drm: Introduce mutex_trylock_recursive()
By popular DRM demand, introduce mutex_trylock_recursive() to fix up the
two GEM users.

Without this it is very easy for these drivers to get stuck in
low-memory situations and trigger OOM. Work is in progress to remove the
need for this in at least i915.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Ding Tianhong <dingtianhong@huawei.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jason Low <jason.low2@hpe.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Terry Rudd <terry.rudd@hpe.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Will Deacon <Will.Deacon@arm.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-15 14:19:55 +01:00
Stephen Boyd
9648dc1577 recordmcount: arm: Implement make_nop
In similar spirit to x86 and arm64 support, add a make_nop_arm()
to replace calls to mcount with a nop in sections that aren't
traced.

Link: http://lkml.kernel.org/r/20161018234200.5804-1-sboyd@codeaurora.org

Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-11-14 16:43:00 -05:00
Greg Kroah-Hartman
b7d91c9152 Merge 4.9-rc5 into char-misc-next
We want those fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-11-14 16:39:47 +01:00
Nicholas Piggin
5b9ff02785 powerpc: Build-time sort the exception table
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-14 11:11:51 +11:00
Linus Torvalds
015ed9433b Merge branch 'maybe-uninitialized' (patches from Arnd)
Merge fixes for -Wmaybe-uninitialized from Arnd Bergmann:
 "It took a while for some patches to make it into mainline through
  maintainer trees, but the 28-patch series is now reduced to 10, with
  one tiny patch added at the end.

  Aside from patches that are no longer required, I did these changes
  compared to version 1:

   - Dropped "iio: maxim_thermocouple: detect invalid storage size in
     read()", which is currently in linux-next as commit 32cb7d27e6.
     This is the only remaining warning I see for a couple of corner
     cases (kbuild bot reports it on blackfin, kernelci bot and arm-soc
     bot both report it on arm64)

   - Dropped "brcmfmac: avoid maybe-uninitialized warning in
     brcmf_cfg80211_start_ap", which is currently in net/master merge
     pending.

   - Dropped two x86 patches, "x86: math-emu: possible uninitialized
     variable use" and "x86: mark target address as output in 'insb'
     asm" as they do not seem to trigger for a default build, and I got
     no feedback on them. Both of these are ancient issues and seem
     harmless, I will send them again to the x86 maintainers once the
     rest is merged.

   - Dropped "rbd: false-postive gcc-4.9 -Wmaybe-uninitialized" based on
     feedback from Ilya Dryomov, who already has a different fix queued
     up for v4.10. The kbuild bot reports this as a warning for xtensa.

   - Replaced "crypto: aesni: avoid -Wmaybe-uninitialized warning" with
     a simpler patch, this one always triggers but my first solution
     would not be safe for linux-4.9 any more at this point. I'll follow
     up with the larger patch as a cleanup for 4.10.

   - Replaced "dib0700: fix nec repeat handling" with a better one,
     contributed by Sean Young"

* -Wmaybe-uninitialized fixes:
  Kbuild: enable -Wmaybe-uninitialized warnings by default
  pcmcia: fix return value of soc_pcmcia_regulator_set
  infiniband: shut up a maybe-uninitialized warning
  crypto: aesni: shut up -Wmaybe-uninitialized warning
  rc: print correct variable for z8f0811
  dib0700: fix nec repeat handling
  s390: pci: don't print uninitialized data for debugging
  nios2: fix timer initcall return value
  x86: apm: avoid uninitialized data
  NFSv4.1: work around -Wmaybe-uninitialized warning
  Kbuild: enable -Wmaybe-uninitialized warning for "make W=1"
2016-11-11 10:03:01 -08:00
Arnd Bergmann
4324cb23f4 Kbuild: enable -Wmaybe-uninitialized warnings by default
Previously the warnings were added back at the W=1 level and above, this
now turns them on again by default, assuming that we have addressed all
warnings and again have a clean build for v4.10.

I found a number of new warnings in linux-next already and submitted
bugfixes for those.  Hopefully they are caught by the 0day builder in
the future as soon as this patch is merged.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:45:08 -08:00
Arnd Bergmann
a76bcf557e Kbuild: enable -Wmaybe-uninitialized warning for "make W=1"
Traditionally, we have always had warnings about uninitialized variables
enabled, as this is part of -Wall, and generally a good idea [1], but it
also always produced false positives, mainly because this is a variation
of the halting problem and provably impossible to get right in all cases
[2].

Various people have identified cases that are particularly bad for false
positives, and in commit e74fc973b6 ("Turn off -Wmaybe-uninitialized
when building with -Os"), I turned off the warning for any build that
was done with CC_OPTIMIZE_FOR_SIZE.  This drastically reduced the number
of false positive warnings in the default build but unfortunately had
the side effect of turning the warning off completely in 'allmodconfig'
builds, which in turn led to a lot of warnings (both actual bugs, and
remaining false positives) to go in unnoticed.

With commit 877417e6ff ("Kbuild: change CC_OPTIMIZE_FOR_SIZE
definition") enabled the warning again for allmodconfig builds in v4.7
and in v4.8-rc1, I had finally managed to address all warnings I get in
an ARM allmodconfig build and most other maybe-uninitialized warnings
for ARM randconfig builds.

However, commit 6e8d666e92 ("Disable "maybe-uninitialized" warning
globally") was merged at the same time and disabled it completely for
all configurations, because of false-positive warnings on x86 that I had
not addressed until then.  This caused a lot of actual bugs to get
merged into mainline, and I sent several dozen patches for these during
the v4.9 development cycle.  Most of these are actual bugs, some are for
correct code that is safe because it is only called under external
constraints that make it impossible to run into the case that gcc sees,
and in a few cases gcc is just stupid and finds something that can
obviously never happen.

I have now done a few thousand randconfig builds on x86 and collected
all patches that I needed to address every single warning I got (I can
provide the combined patch for the other warnings if anyone is
interested), so I hope we can get the warning back and let people catch
the actual bugs earlier.

This reverts the change to disable the warning completely and for now
brings it back at the "make W=1" level, so we can get it merged into
mainline without introducing false positives.  A follow-up patch enables
it on all levels unless some configuration option turns it off because
of false-positives.

Link: https://rusty.ozlabs.org/?p=232 [1]
Link: https://gcc.gnu.org/wiki/Better_Uninitialized_Warnings [2]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:45:08 -08:00
Alexey Dobriyan
eef06b82f1 scripts/bloat-o-meter: fix SIGPIPE
Fix piping output to a program which quickly exits (read: head -n1)

	$ ./scripts/bloat-o-meter ../vmlinux-000 ../obj/vmlinux | head -n1
	add/remove: 0/0 grow/shrink: 9/60 up/down: 124/-305 (-181)
	close failed in file object destructor:
	sys.excepthook is missing
	lost sys.stderr

Link: http://lkml.kernel.org/r/20161028204618.GA29923@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:12:37 -08:00
Nicholas Piggin
cc6acc11ca kbuild: be more careful about matching preprocessed asm ___EXPORT_SYMBOL
The CRC code for asm exports grabs the preprocessed asm, finds the
___EXPORT_SYMBOL and turns those into EXPORT_SYMBOL in a C program
that can be preprocessed and parsed to create the CRC signatures from
the type.

The existing regex matching and replacement is too strict, and doesn't
deal well with whitespace among other things. The line
" EXPORT_SYMBOL(sym)" in a .S file would not match due to initial
whitespace, for example, which resulted in x86's ___preempt_schedule
failing to get CRCs.

Reported-by: Philip Müller <philm@manjaro.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-09 22:29:53 +01:00
Sebastian Andrzej Siewior
82031ea29e scripts/has-stack-protector: add -fno-PIE
Adding -no-PIE to the fstack protector check. -no-PIE was introduced
before -fstack-protector so there is no need for a runtime check.

Without it the build stops:
|Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: -fstack-protector-strong available but compiler is broken

due to -mcmodel=kernel + -fPIE if -fPIE is enabled by default.

Tagging it stable so it is possible to compile recent stable kernels as
well.

Cc: stable@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-09 22:28:05 +01:00
Nicholas Piggin
4efca4ed05 kbuild: modversions for EXPORT_SYMBOL() for asm
Allow architectures to create asm/asm-prototypes.h file that
provides C prototypes for exported asm functions, which enables
proper CRC versions to be generated for them.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-01 16:20:17 +01:00
Kees Cook
58bea4144d latent_entropy: Fix wrong gcc code generation with 64 bit variables
The stack frame size could grow too large when the plugin used long long
on 32-bit architectures when the given function had too many basic blocks.

The gcc warning was:

drivers/pci/hotplug/ibmphp_ebda.c: In function 'ibmphp_access_ebda':
drivers/pci/hotplug/ibmphp_ebda.c:409:1: warning: the frame size of 1108 bytes is larger than 1024 bytes [-Wframe-larger-than=]

This switches latent_entropy from u64 to unsigned long.

Thanks to PaX Team and Emese Revfy for the patch.

Signed-off-by: Kees Cook <keescook@chromium.org>
2016-10-31 11:30:41 -07:00
Kees Cook
da7389ac6c gcc-plugins: Export symbols needed by gcc
This explicitly exports symbols that gcc expects from plugins.

Based on code from Emese Revfy.

Signed-off-by: Kees Cook <keescook@chromium.org>
2016-10-31 10:40:13 -07:00
Silvio Fricke
c950a1739e kernel-doc: better parsing of named variable arguments
Without this patch we get warnings for named variable arguments.

    warning: No description found for parameter '...'
    warning: Excess function parameter 'args' description in 'alloc_ordered_workqueue'

Signed-off-by: Silvio Fricke <silvio.fricke@gmail.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-10-28 10:54:16 -06:00
Valentin Rothberg
0d18c19288 checkkconfigsymbols.py: support git's "^" syntax
Support git's "^" syntax for diffing two commits, for instance via
"--diff HEAD^^^..HEAD".

Signed-off-by: Michael Ellermann <mpe@ellerman.id.au>
Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-10-28 08:12:14 -04:00
Josh Poimboeuf
efdb4167e6 scripts/faddr2line: Fix "size mismatch" error
I'm not sure how we missed this problem before.  When I take a function
address and size from an oops and give it to faddr2line, it usually
complains about a size mismatch:

  $ scripts/faddr2line ~/k/vmlinux write_sysrq_trigger+0x51/0x60
  skipping write_sysrq_trigger address at 0xffffffff815731a1 due to size mismatch (0x60 != 83)
  no match for write_sysrq_trigger+0x51/0x60

The problem is caused by differences in how kallsyms and faddr2line
determine a function's size.

kallsyms calculates a function's size by parsing the output of 'nm -n'
and subtracting the next function's address from the current function's
address.  This means that nop instructions after the end of the function
are included in the size.

In contrast, faddr2line reads the size from the symbol table, which does
*not* include the ending nops in the function's size.

Change faddr2line to calculate the size from the output of 'nm -n' to be
consistent with kallsyms and oops outputs.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/bd313ed7c4003f6b1fda63e825325c44a9d837de.1477405374.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-10-25 18:40:37 +02:00
Mauro Carvalho Chehab
8c27ceff36 docs: fix locations of several documents that got moved
The previous patch renamed several files that are cross-referenced
along the Kernel documentation. Adjust the links to point to
the right places.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-10-24 08:12:35 -02:00
Nicholas Piggin
989cea5c14 kbuild: prevent lib-ksyms.o rebuilds
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reported-by: Russell King <rmk+kernel@armlinux.org.uk>
Tested-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-10-22 21:49:30 +02:00
Linus Torvalds
9ffc66941d This adds a new gcc plugin named "latent_entropy". It is designed to
extract as much possible uncertainty from a running system at boot time as
 possible, hoping to capitalize on any possible variation in CPU operation
 (due to runtime data differences, hardware differences, SMP ordering,
 thermal timing variation, cache behavior, etc).
 
 At the very least, this plugin is a much more comprehensive example for
 how to manipulate kernel code using the gcc plugin internals.
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Merge tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull gcc plugins update from Kees Cook:
 "This adds a new gcc plugin named "latent_entropy". It is designed to
  extract as much possible uncertainty from a running system at boot
  time as possible, hoping to capitalize on any possible variation in
  CPU operation (due to runtime data differences, hardware differences,
  SMP ordering, thermal timing variation, cache behavior, etc).

  At the very least, this plugin is a much more comprehensive example
  for how to manipulate kernel code using the gcc plugin internals"

* tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  latent_entropy: Mark functions with __latent_entropy
  gcc-plugins: Add latent_entropy plugin
2016-10-15 10:03:15 -07:00
Linus Torvalds
50cff89837 Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull misc kbuild changes from Michal Marek:
 "Just a few patches on the kbuild.git#misc branch this time:

   - New Coccinelle patch by Nicholas Mc Guire
   - Existing patch fixes by Julia Lawall
   - Minor comment fix by Markus Elfring"

* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  Coccinelle: flag conditions with no effect
  scripts/coccicheck: Update reference for the corresponding documentation
  Coccinelle: pm_runtime: ensure relevance of pm_runtime reports
  Coccinelle: limit memdup_user transformation to GFP_KERNEL case
2016-10-14 15:03:08 -07:00
Linus Torvalds
84d69848c9 Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild updates from Michal Marek:

 - EXPORT_SYMBOL for asm source by Al Viro.

   This does bring a regression, because genksyms no longer generates
   checksums for these symbols (CONFIG_MODVERSIONS). Nick Piggin is
   working on a patch to fix this.

   Plus, we are talking about functions like strcpy(), which rarely
   change prototypes.

 - Fixes for PPC fallout of the above by Stephen Rothwell and Nick
   Piggin

 - fixdep speedup by Alexey Dobriyan.

 - preparatory work by Nick Piggin to allow architectures to build with
   -ffunction-sections, -fdata-sections and --gc-sections

 - CONFIG_THIN_ARCHIVES support by Stephen Rothwell

 - fix for filenames with colons in the initramfs source by me.

* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: (22 commits)
  initramfs: Escape colons in depfile
  ppc: there is no clear_pages to export
  powerpc/64: whitelist unresolved modversions CRCs
  kbuild: -ffunction-sections fix for archs with conflicting sections
  kbuild: add arch specific post-link Makefile
  kbuild: allow archs to select link dead code/data elimination
  kbuild: allow architectures to use thin archives instead of ld -r
  kbuild: Regenerate genksyms lexer
  kbuild: genksyms fix for typeof handling
  fixdep: faster CONFIG_ search
  ia64: move exports to definitions
  sparc32: debride memcpy.S a bit
  [sparc] unify 32bit and 64bit string.h
  sparc: move exports to definitions
  ppc: move exports to definitions
  arm: move exports to definitions
  s390: move exports to definitions
  m68k: move exports to definitions
  alpha: move exports to actual definitions
  x86: move exports to actual definitions
  ...
2016-10-14 14:26:58 -07:00
Mathieu Maret
d0c75f33f0 scripts/tags.sh: enable code completion in VIM
Vim, with the omnicppcomplete() plugin, can do code completion using
information build by ctags.  Add flags needed by omnicppcomplete() to
have completion on member of structure.

1: https://github.com/vim-scripts/omnicppcomplete
2: https://github.com/vim-scripts/OmniCppComplete/blob/master/doc/omnicppcomplete.txt#L93

Link: http://lkml.kernel.org/r/20160830191546.4469-1-mathieu.maret@gmail.com
Signed-off-by: Mathieu Maret <mathieu.maret@gmail.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:33 -07:00
Joe Perches
459cf0ae5d checkpatch: improve the octal permissions tests
The function calls with octal permissions commonly span multiple lines.
The current test is line oriented and fails to find some matches.

Make the test use the $stat variable instead of the $line variable to span
multiple lines.

Also add a few functions to the known functions with permissions list.

Move the SYMBOLIC_PERMS test to a separate section to find all the S_<FOO>
permissions in any form not just those that have specific function names.

This can now find and fix permissions uses like:
     .mode = S_<FOO> | S_<BAR>;

Link: http://lkml.kernel.org/r/b51bab60530912aae4ac420119d465c5b206f19f.1475030406.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Tested-by: Ramiro Oliveira <roliveir@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:31 -07:00
Joe Perches
ca0d8929e7 checkpatch: add warning for unnamed function definition arguments
Function definitions without identifiers like
	 int foo(int)
are not preferred.  Emit a warning when they occur.

Link: http://lkml.kernel.org/r/94fe6378504745991b650f48fc92bb4648f25706.1474925354.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:31 -07:00
Joe Perches
5207649b7b checkpatch: improve MACRO_ARG_PRECEDENCE test
It is possible for a multiple line macro definition to have a false positive
report when an argument is used on a line after a continuation \.

This line might have a leading '+' as the initial character that could be
confused by checkpatch as an operator.

Avoid the leading character on multiple line macro definitions.

Link: http://lkml.kernel.org/r/60229d13399f9b6509db5a32e30d4c16951a60cd.1473836073.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:31 -07:00
Joe Perches
9192d41a3f checkpatch: add --strict test for precedence challenged macro arguments
Add a test for macro arguents that have a non-comma leading or trailing
operator where the argument isn't parenthesized to avoid possible precedence
issues.

Link: http://lkml.kernel.org/r/47715508972f8d786f435e583ff881dbeee3a114.1473745855.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Julia Lawall <julia.lawall@lip6.fr>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:30 -07:00
Joe Perches
f59b64bffe checkpatch: add --strict test for macro argument reuse
If a macro argument is used multiple times in the macro definition, the
macro argument may have an unexpected side-effect.

Add a test (MACRO_ARG_REUSE) for that condition which is only
emitted with command-line option --strict.

Link: http://lkml.kernel.org/r/b6d67a87cafcafd15499e91780dc63b15dec0aa0.1473744906.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Julia Lawall <julia.lawall@lip6.fr>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:30 -07:00
Joe Perches
af207524a4 checkpatch: improve the block comment * alignment test
An "uninitialized value" is emitted when a block comment starts on
the same line as a statement.

Fix this and make the test use a little fewer cpu cycles too.

Link: http://lkml.kernel.org/r/3c9993320c2182d37f53ac540878cfef59c3f62d.1473365956.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Charlemagne Lasse <charlemagnelasse@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:30 -07:00
Joe Perches
0616efa45a checkpatch: speed up checking for filenames in sections marked obsolete
Adding -f to the get_maintainer.pl invocation means git isn't invoked
by get_maintainer.pl for known filenames.

This reduces the overall time to run checkpatch.

Link: http://lkml.kernel.org/r/22991e3a295aeb399b43af0478b6e5809106ccee.1472684066.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:30 -07:00
Joe Perches
15c03cfeab const_structs.checkpatch: add frequently used from Julia Lawall's list
Using const is generally a good idea.

Julia Lawall has created a list of always const and almost always const
structs in the kernel sources.

Link: https://lkml.org/lkml/2016/8/28/95

Add the most frequently used (> 50 cases) that are almost always or
always const.

Link: http://lkml.kernel.org/r/1e16020f8027654db0095bbfbcc11da51025365c.1472664220.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Julia Lawall <julia.lawall@lip6.fr>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:30 -07:00
Joe Perches
bf1fa1dae6 checkpatch: externalize the structs that should be const
Make it easier to add new structs that should be const.

Link: http://lkml.kernel.org/r/e5a8da43e7c11525bafbda1ca69a8323614dd942.1472664220.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Julia Lawall <julia.lawall@lip6.fr>
Cc: Kees Cook <keescook@chromium.org>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:30 -07:00
Joe Perches
f333195d41 checkpatch: don't test for prefer ether_addr_<foo>
< sigh > Comment these tests out.

These are just too enticing to people that don't verify that
both source and dest addresses really must be __aligned(2).

It helps make Dan Carpenter happy too.

Link: http://lkml.kernel.org/r/dc32ec66d24647f4cdf824c8dfbbc59aa7ce7b7d.1472665676.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Greg <gvrose8192@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:30 -07:00
Joe Perches
08eb9b8016 checkpatch: test multiple line block comment alignment
Warn when block comments are not aligned on the *

/*
 * block comment, no warning
 */

/*
  * block comment, emit warning
  */

Link: http://lkml.kernel.org/r/edb57bd330adfe024b95ec2a807d4aa7f0c8b112.1472261299.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:30 -07:00
Joe Perches
f90774e1fd checkpatch: look for symbolic permissions and suggest octal instead
S_<FOO> uses should be avoided where octal is more intelligible.

Linus didst say:

: It's *much* easier to parse and understand the octal numbers, while the
: symbolic macro names are just random line noise and hard as hell to
: understand.  You really have to think about it.
:
: So we should rather go the other way: convert existing bad symbolic
: permission bit macro use to just use the octal numbers.
:
: The symbolic names are good for the *other* bits (ie sticky bit, and the
: inode mode _type_ numbers etc), but for the permission bits, the symbolic
: names are just insane crap.  Nobody sane should ever use them.  Not in the
: kernel, not in user space.
(http://lkml.kernel.org/r/CA+55aFw5v23T-zvDZp-MmD_EYxF8WbafwwB59934FV7g21uMGQ@mail.gmail.com)

Link: http://lkml.kernel.org/r/7232ef011d05a92f4caa86a5e9830d87966a2eaf.1470180926.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:30 -07:00
Joe Perches
85b0ee18bb checkpatch: see if modified files are marked obsolete in MAINTAINERS
Use get_maintainer to check the status of individual files.  If
"obsolete", suggest leaving the files alone.

Link: http://lkml.kernel.org/r/7ceaa510dc9d2df05ec4b456baed7bb1415550b3.1471889575.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: SF Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:30 -07:00
Nicholas Mc Guire
c8990359d4 Coccinelle: flag conditions with no effect
Report code constructs where the if and else branch are functionally
identical. In cases where this is intended it really should be
documented - most reported cases probably are bugs.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-10-11 09:57:17 +02:00
Markus Elfring
1e01892e7a scripts/coccicheck: Update reference for the corresponding documentation
Use the current name (in a comment at the beginning of this script) for
the file which was converted to the documentation format "reStructuredText"
in August 2016.

Fixes: 4b9033a334 ("docs: sphinxify coccinelle.txt and add it to dev-tools")
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-10-11 09:50:43 +02:00
Emese Revfy
38addce8b6 gcc-plugins: Add latent_entropy plugin
This adds a new gcc plugin named "latent_entropy". It is designed to
extract as much possible uncertainty from a running system at boot time as
possible, hoping to capitalize on any possible variation in CPU operation
(due to runtime data differences, hardware differences, SMP ordering,
thermal timing variation, cache behavior, etc).

At the very least, this plugin is a much more comprehensive example for
how to manipulate kernel code using the gcc plugin internals.

The need for very-early boot entropy tends to be very architecture or
system design specific, so this plugin is more suited for those sorts
of special cases. The existing kernel RNG already attempts to extract
entropy from reliable runtime variation, but this plugin takes the idea to
a logical extreme by permuting a global variable based on any variation
in code execution (e.g. a different value (and permutation function)
is used to permute the global based on loop count, case statement,
if/then/else branching, etc).

To do this, the plugin starts by inserting a local variable in every
marked function. The plugin then adds logic so that the value of this
variable is modified by randomly chosen operations (add, xor and rol) and
random values (gcc generates separate static values for each location at
compile time and also injects the stack pointer at runtime). The resulting
value depends on the control flow path (e.g., loops and branches taken).

Before the function returns, the plugin mixes this local variable into
the latent_entropy global variable. The value of this global variable
is added to the kernel entropy pool in do_one_initcall() and _do_fork(),
though it does not credit any bytes of entropy to the pool; the contents
of the global are just used to mix the pool.

Additionally, the plugin can pre-initialize arrays with build-time
random contents, so that two different kernel builds running on identical
hardware will not have the same starting values.

Signed-off-by: Emese Revfy <re.emese@gmail.com>
[kees: expanded commit message and code comments]
Signed-off-by: Kees Cook <keescook@chromium.org>
2016-10-10 14:51:44 -07:00
Joe Perches
470164572d spelling.txt: "modeled" is spelt correctly
No need to correct the correct.

Link: http://lkml.kernel.org/r/1472490791.3425.38.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-07 18:46:30 -07:00
Chris Metcalf
6727ad9e20 nmi_backtrace: generate one-line reports for idle cpus
When doing an nmi backtrace of many cores, most of which are idle, the
output is a little overwhelming and very uninformative.  Suppress
messages for cpus that are idling when they are interrupted and just
emit one line, "NMI backtrace for N skipped: idling at pc 0xNNN".

We do this by grouping all the cpuidle code together into a new
.cpuidle.text section, and then checking the address of the interrupted
PC to see if it lies within that section.

This commit suitably tags x86 and tile idle routines, and only adds in
the minimal framework for other architectures.

Link: http://lkml.kernel.org/r/1472487169-14923-5-git-send-email-cmetcalf@mellanox.com
Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Daniel Thompson <daniel.thompson@linaro.org> [arm]
Tested-by: Petr Mladek <pmladek@suse.com>
Cc: Aaron Tomlin <atomlin@redhat.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-07 18:46:30 -07:00
Linus Torvalds
95107b30be This release cycle is rather small. Just a few fixes to tracing.
The big change is the addition of the hwlat tracer. It not only detects
 SMIs, but also other latency that's caused by the hardware. I have detected
 some latency from large boxes having bus contention.
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Merge tag 'trace-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from Steven Rostedt:
 "This release cycle is rather small.  Just a few fixes to tracing.

  The big change is the addition of the hwlat tracer. It not only
  detects SMIs, but also other latency that's caused by the hardware. I
  have detected some latency from large boxes having bus contention"

* tag 'trace-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Call traceoff trigger after event is recorded
  ftrace/scripts: Add helper script to bisect function tracing problem functions
  tracing: Have max_latency be defined for HWLAT_TRACER as well
  tracing: Add NMI tracing in hwlat detector
  tracing: Have hwlat trace migrate across tracing_cpumask CPUs
  tracing: Add documentation for hwlat_detector tracer
  tracing: Added hardware latency tracer
  ftrace: Access ret_stack->subtime only in the function profiler
  function_graph: Handle TRACE_BPUTS in print_graph_comment
  tracing/uprobe: Drop isdigit() check in create_trace_uprobe
2016-10-06 11:48:41 -07:00
Linus Torvalds
e46cae4418 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
 "The new features and main improvements in this merge for v4.9

   - Support for the UBSAN sanitizer

   - Set HAVE_EFFICIENT_UNALIGNED_ACCESS, it improves the code in some
     places

   - Improvements for the in-kernel fpu code, in particular the overhead
     for multiple consecutive in kernel fpu users is recuded

   - Add a SIMD implementation for the RAID6 gen and xor operations

   - Add RAID6 recovery based on the XC instruction

   - The PCI DMA flush logic has been improved to increase the speed of
     the map / unmap operations

   - The time synchronization code has seen some updates

  And bug fixes all over the place"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (48 commits)
  s390/con3270: fix insufficient space padding
  s390/con3270: fix use of uninitialised data
  MAINTAINERS: update DASD maintainer
  s390/cio: fix accidental interrupt enabling during resume
  s390/dasd: add missing \n to end of dev_err messages
  s390/config: Enable config options for Docker
  s390/dasd: make query host access interruptible
  s390/dasd: fix panic during offline processing
  s390/dasd: fix hanging offline processing
  s390/pci_dma: improve lazy flush for unmap
  s390/pci_dma: split dma_update_trans
  s390/pci_dma: improve map_sg
  s390/pci_dma: simplify dma address calculation
  s390/pci_dma: remove dma address range check
  iommu/s390: simplify registration of I/O address translation parameters
  s390: migrate exception table users off module.h and onto extable.h
  s390: export header for CLP ioctl
  s390/vmur: fix irq pointer dereference in int handler
  s390/dasd: add missing KOBJ_CHANGE event for unformatted devices
  s390: enable UBSAN
  ...
2016-10-04 14:05:52 -07:00
Linus Torvalds
02bafd96f3 This is the documentation update pull for the 4.9 merge window.
The Sphinx transition is still creating a fair amount of work.  Here we
 have a number of fixes and, importantly, a proper PDF output solution,
 thanks to Jani Nikula, Mauro Carvalho Chehab and Markus Heiser.
 
 I've started a couple of new books: a driver API book (based on the old
 device-drivers.tmpl) and a development tools book.  Both are meant to show
 how we can integrate together our existing documentation into a more
 coherent and accessible whole.  It involves moving some stuff around and
 formatting changes, but, I think, the results are worth it.  The good news
 is that most of our existing Documentation/*.txt files are *almost* in RST
 format already; the amount of messing around required is minimal.
 
 And, of course, there's the usual set of updates, typo fixes, and more.
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Merge tag 'docs-4.9' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "This is the documentation update pull for the 4.9 merge window.

  The Sphinx transition is still creating a fair amount of work. Here we
  have a number of fixes and, importantly, a proper PDF output solution,
  thanks to Jani Nikula, Mauro Carvalho Chehab and Markus Heiser.

  I've started a couple of new books: a driver API book (based on the
  old device-drivers.tmpl) and a development tools book. Both are meant
  to show how we can integrate together our existing documentation into
  a more coherent and accessible whole. It involves moving some stuff
  around and formatting changes, but, I think, the results are worth it.
  The good news is that most of our existing Documentation/*.txt files
  are *almost* in RST format already; the amount of messing around
  required is minimal.

  And, of course, there's the usual set of updates, typo fixes, and
  more"

* tag 'docs-4.9' of git://git.lwn.net/linux: (120 commits)
  URL changed for Linux Foundation TAB
  dax : Fix documentation with respect to struct pages
  iio: Documentation: Correct the path used to create triggers.
  docs: Remove space-before-label guidance from CodingStyle
  docs-rst: add inter-document cross references
  Documentation/email-clients.txt: convert it to ReST markup
  Documentation/kernel-docs.txt: reorder based on timestamp
  Documentation/kernel-docs.txt: Add dates for online docs
  Documentation/kernel-docs.txt: get rid of broken docs
  Documentation/kernel-docs.txt: move in-kernel docs
  Documentation/kernel-docs.txt: remove more legacy references
  Documentation/kernel-docs.txt: add two published books
  Documentation/kernel-docs.txt: sort books per publication date
  Documentation/kernel-docs.txt: adjust LDD references
  Documentation/kernel-docs.txt: some improvements on the ReST output
  Documentation/kernel-docs.txt: Consistent indenting: 4 spaces
  Documentation/kernel-docs.txt: Add 4 paper/book references
  Documentation/kernel-docs.txt: Improve layouting of book list
  Documentation/kernel-docs.txt: Remove offline or outdated entries
  docs: Clean up bare :: lines
  ...
2016-10-04 13:54:07 -07:00
Linus Torvalds
7a53eea1f7 Char/Misc driver update for 4.9-rc1
Here's the "big" char and misc driver update for 4.9-rc1.
 
 Lots of little things here, all over the driver tree for subsystems that
 flow through me.  Nothing major that I can discern, full details are in
 the shortlog.
 
 All have been in the linux-next tree with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here's the "big" char and misc driver update for 4.9-rc1.

  Lots of little things here, all over the driver tree for subsystems
  that flow through me. Nothing major that I can discern, full details
  are in the shortlog.

  All have been in the linux-next tree with no reported issues"

* tag 'char-misc-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (144 commits)
  drivers/misc/hpilo: Changes to support new security states in iLO5 FW
  at25: fix debug and error messaging
  misc/genwqe: ensure zero initialization
  vme: fake: remove unexpected unlock in fake_master_set()
  vme: fake: mark symbols static where possible
  spmi: pmic-arb: Return an error code if sanity check fails
  Drivers: hv: get rid of id in struct vmbus_channel
  Drivers: hv: make VMBus bus ids persistent
  mcb: Add a dma_device to mcb_device
  mcb: Enable PCI bus mastering by default
  mei: stop the stall timer worker if not needed
  clk: probe common clock drivers earlier
  vme: fake: fix build for 64-bit dma_addr_t
  ttyprintk: Neaten and simplify printing
  mei: me: add kaby point device ids
  coresight: tmc: mark symbols static where possible
  coresight: perf: deal with error condition properly
  Drivers: hv: hv_util: Avoid dynamic allocation in time synch
  fpga manager: Add hardware dependency to Zynq driver
  Drivers: hv: utils: Support TimeSync version 4.0 protocol samples.
  ...
2016-10-03 19:57:49 -07:00
Julia Lawall
d97629f168 Coccinelle: pm_runtime: ensure relevance of pm_runtime reports
pm_runtime.cocci starts with one rule that searches for a variety of
functions calls, followed by various rules that report errors.  Previously,
the only connection between the first rule and the rest was to check that
the first rule had matched somewhere.  Change the rules to propagate a
position from the first rule to the others, to make sure that the sites
reported on are the same as the sites that were identified as having the
relevant functions.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-10-01 23:03:41 +02:00
Julia Lawall
43d96390d5 Coccinelle: limit memdup_user transformation to GFP_KERNEL case
Memdup_user encapsulates a memory allocation with the flag GFP_KERNEL, so
only allow this flag in the original code.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-10-01 23:03:09 +02:00
Dmitry Vyukov
e436fd61a8 scripts/recordmcount.c: account for .softirqentry.text
be7635e728 ("arch, ftrace: for KASAN put hard/soft IRQ entries into
separate sections") added .softirqentry.text section, but it was not added
to recordmcount.  So functions in the section are untracable.  Add the
section to scripts/recordmcount.c and scripts/recordmcount.pl.

Fixes: be7635e728 ("arch, ftrace: for KASAN put hard/soft IRQ entries into separate sections")
Link: http://lkml.kernel.org/r/1474902626-73468-1-git-send-email-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Steve Rostedt <rostedt@goodmis.org>
Cc: <stable@vger.kernel.org>	[4.6+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-09-28 16:19:02 -07:00
Michal Marek
590abbdd27 initramfs: Escape colons in depfile
Special characters are problematic in depfiles, but we can fix colons
easily.

Reported-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-09-23 10:35:32 +02:00
Steven Rostedt (Red Hat)
951dbf500a ftrace/scripts: Add helper script to bisect function tracing problem functions
Every so often, with a special config or a architecture change, running
function or function_graph tracing can cause the machien to hard reboot,
crash, or simply hard lockup. There's some functions in the function graph
tracer that can not be traced otherwise it causes the function tracer to
recurse before the recursion protection mechanisms are in place.

When this occurs, using the dynamic ftrace featuer that allows limiting what
actually gets traced can be used to bisect down to the problem function.
This adds a script that helps with this process in the scripts/tracing
directory, called ftrace-bisect.sh

The set up is to read all the functions that can be traced from
available_filter_functions into a file (full_file). Then run this script
passing it the full_file and a "test_file" and "non_test_file", where the
test_file will be add to set_ftrace_filter. What ftarce_bisect.sh does, is
to copy half of the functions in full_file into the test_file and the other
half into the non_test_file. This way, one can cat the test_file into the
set_ftrace_filter functions and only test the functions that are in that
file. If it works, then we run the process again after copying non_test_file
to full_file and repeating the process. If the system crashed, then the bad
function is in the test_file and after a reboot, the test_file becomes the
new full_file in the next iteration.

When we get down to a single function in the full_file, then
ftrace_bisect.sh will report that as the bad function.

Full documentation of how to use this simple script is within the script
file itself.

Link: http://lkml.kernel.org/r/20160920100716.131d3647@gandalf.local.home

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-09-21 13:56:55 -04:00
Christian Borntraeger
725c4d22bb ubsan: allow to disable the null sanitizer
Some architectures use a hardware defined structure at address zero.
Checking for a null pointer will result in many ubsan reports.
Allow users to disable the null sanitizer.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-09-20 14:26:08 +02:00
Linus Torvalds
7fadce0d60 scripts/faddr2line: improve on base path filtering a bit
Due to our compiler include directives, the build pathnames for header
files often end up being of the form "$srcdir/./include/linux/xyz.h",
which ends up having that extra "." path component after the build base
in it.

Teach faddr2line to skip that too, to make code generated in inline
functions in header files match the filename for the regular C files.

Rabin Vincent pointed out that I can't make a stricter regexp match by
using the " at " prefix for the pathname, because that ends up being
locale-dependent.  But this does require that the path match be preceded
by a space, to make it a bit more strict (that matters mainly if we
didn't find any base_dir at all, and we only end up with the "./" part
of the match)

Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Rabin Vincent <rabin@rab.in>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-09-19 14:49:08 -07:00
Josh Poimboeuf
67326666e2 scripts: add script for translating stack dump function offsets
addr2line doesn't work with KASLR addresses.  Add a basic addr2line
wrapper script which takes the 'func+offset/size' format as input.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-09-19 12:00:30 -07:00
Nicholas Piggin
fbe6e37dab kbuild: add arch specific post-link Makefile
Allow architectures to create arch/xxx/Makefile.postlink with targets
for vmlinux, modules.ko, and clean, which will be invoked after final
linking of vmlinux and modules.

powerpc will use this to check vmlinux linker relocations for sanity,
and may use it to fix up alternate instruction patch branch addresses.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-09-09 10:47:00 +02:00