Commit Graph

648955 Commits

Author SHA1 Message Date
Florian Fainelli
faf3a932fb net: dsa: Ensure validity of dst->ds[0]
It is perfectly possible to have non zero indexed switches being present
in a DSA switch tree, in such a case, we will be deferencing a NULL
pointer while dsa_cpu_port_ethtool_{setup,restore}. Be more defensive
and ensure that dst->ds[0] is valid before doing anything with it.

Fixes: 0c73c523cf ("net: dsa: Initialize CPU port ethtool ops per tree")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10 20:18:52 -05:00
Mark Rutland
ddc37832a1 ARM: 8634/1: hw_breakpoint: blacklist Scorpion CPUs
On APQ8060, the kernel crashes in arch_hw_breakpoint_init, taking an
undefined instruction trap within write_wb_reg. This is because Scorpion
CPUs erroneously appear to set DBGPRSR.SPD when WFI is issued, even if
the core is not powered down. When DBGPRSR.SPD is set, breakpoint and
watchpoint registers are treated as undefined.

It's possible to trigger similar crashes later on from userspace, by
requesting the kernel to install a breakpoint or watchpoint, as we can
go idle at any point between the reset of the debug registers and their
later use. This has always been the case.

Given that this has always been broken, no-one has complained until now,
and there is no clear workaround, disable hardware breakpoints and
watchpoints on Scorpion to avoid these issues.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2017-01-10 23:32:26 +00:00
Rabin Vincent
270c8cf1ca ARM: 8632/1: ftrace: fix syscall name matching
ARM has a few system calls (most notably mmap) for which the names of
the functions which are referenced in the syscall table do not match the
names of the syscall tracepoints.  As a consequence of this, these
tracepoints are not made available.  Implement
arch_syscall_match_sym_name to fix this and allow tracing even these
system calls.

Signed-off-by: Rabin Vincent <rabinv@axis.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2017-01-10 23:32:25 +00:00
Linus Torvalds
807b93e995 linux-kselftest-4.10-rc4-fixes
This update consists of fixes to use shell instead of bash to run tests
 in embedded devices where the only shell available is the busybox ash.
 Also included is a typo fix to a test result message.
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Merge tag 'linux-kselftest-4.10-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "This update consists of fixes to use shell instead of bash to run
  tests in embedded devices where the only shell available is the
  busybox ash.

  Also included is a typo fix to a test result message"

* tag 'linux-kselftest-4.10-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: x86/pkeys: fix spelling mistake: "itertation" -> "iteration"
  selftests: do not require bash to run netsocktests testcase
  selftests: do not require bash to run bpf tests
  selftests: do not require bash for the generated test
2017-01-10 13:51:54 -08:00
Omar Sandoval
6bf6b0aa3d virtio_blk: fix panic in initialization error path
If blk_mq_init_queue() returns an error, it gets assigned to
vblk->disk->queue. Then, when we call put_disk(), we end up calling
blk_put_queue() with the ERR_PTR, causing a bad dereference. Fix it by
only assigning to vblk->disk->queue on success.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-10 13:30:50 -07:00
Jeff Moyer
25b4acfc7d nbd: blk_mq_init_queue returns an error code on failure, not NULL
Additionally, don't assign directly to disk->queue, otherwise
blk_put_queue (called via put_disk) will choke (panic) on the errno
stored there.

Bug found by code inspection after Omar found a similar issue in
virtio_blk.  Compile-tested only.

Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-10 13:30:50 -07:00
Christoph Hellwig
a14d749fce virtio_blk: avoid DMA to stack for the sense buffer
Most users of BLOCK_PC requests allocate the sense buffer on the stack,
so to avoid DMA to the stack copy them to a field in the heap allocated
virtblk_req structure.  Without that any attempt at SCSI passthrough I/O,
including the SG_IO ioctl from userspace will crash the kernel.  Note that
this includes running tools like hdparm even when the host does not have
SCSI passthrough enabled.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org # v4.9+
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-10 13:30:50 -07:00
Chandan Rajendra
dd545b52a3 do_direct_IO: Use inode->i_blkbits to compute block count to be cleaned
The code currently uses sdio->blkbits to compute the number of blocks to
be cleaned. However sdio->blkbits is derived from the logical block size
of the underlying block device (Refer to the definition of
do_blockdev_direct_IO()). Due to this, generic/299 test would rarely
fail when executed on an ext4 filesystem with 64k as the block size and
when using a virtio based disk (having 512 byte as the logical block
size) inside a kvm guest.

This commit fixes the bug by using inode->i_blkbits to compute the
number of blocks to be cleaned.

Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

Fixed up by Jeff Moyer to only use/evaluate inode->i_blkbits once,
to avoid issues with block size changes with IO in flight.

Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-10 13:29:54 -07:00
Vineet Gupta
ecd43afdbe ARCv2: save r30 on kernel entry as gcc uses it for code-gen
This is not exposed to userspace debugers yet, which can be done
independently as a seperate patch !

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-01-10 11:51:33 -08:00
Eric Dumazet
d9584d8ccc net: skb_flow_get_be16() can be static
Removes following sparse complain :

net/core/flow_dissector.c:70:8: warning: symbol 'skb_flow_get_be16'
was not declared. Should it be static?

Fixes: 972d3876fa ("flow dissector: ICMP support")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10 13:30:13 -05:00
Emmanuel Vadot
3116d37651 ARM: dts: sunxi: Change node name for pwrseq pin on Olinuxino-lime2-emmc
The node name for the power seq pin is mmc2@0 like the mmc2_pins_a one.
This makes the original node (mmc2_pins_a) scrapped out of the dtb and
result in a unusable eMMC if U-Boot didn't configured the pins to the
correct functions.

Signed-off-by: Emmanuel Vadot <manu@bidouilliste.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-01-10 18:33:16 +01:00
Bryant G. Ly
7c9d8d0c41 ibmvscsis: Fix srp_transfer_data fail return code
If srp_transfer_data fails within ibmvscsis_write_pending, then
the most likely scenario is that the client timed out the op and
removed the TCE mapping. Thus it will loop forever retrying the
op that is pretty much guaranteed to fail forever. A better return
code would be EIO instead of EAGAIN.

Cc: stable@vger.kernel.org
Reported-by: Steven Royer <seroyer@linux.vnet.ibm.com>
Tested-by: Steven Royer <seroyer@linux.vnet.ibm.com>
Signed-off-by: Bryant G. Ly <bgly@us.ibm.com>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
2017-01-10 09:32:14 -08:00
Milo Kim
661ccdc1a9 ARM: dts: sun8i: Support DTB build for NanoPi M1
The commit 10efbf5f16 ("ARM: dts: sun8i: Add dts file for NanoPi M1 SBC")
introduced NanoPi M1 board but it's missing in Allwinner H3 DTB build.

Signed-off-by: Milo Kim <woogyom.kim@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-01-10 18:32:08 +01:00
Chen-Yu Tsai
6b546c2a15 ARM: dts: sun6i: hummingbird: Enable display engine again
Now that we disable the display engine by default, we need to re-enable
it for the Hummingbird A31, which already had its display pipeline
enabled.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-01-10 18:32:07 +01:00
Chen-Yu Tsai
205ac7b33e ARM: dts: sun6i: Disable display pipeline by default
While we now support the internal display pipeline found on sun6i, it
is possible that we are unable to enable the display for some boards,
due to a lack of drivers for the panels or bridges found on them. If
the display pipeline is enabled, the driver will try to enable, and
possibly screw up the simple framebuffer U-boot had configured.

Disable the display pipeline by default.

Fixes: 6d0e5b70be ("ARM: dts: sun6i: Add device nodes for first
		      display pipeline")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-01-10 18:32:07 +01:00
Bin Liu
7b6c1b4c0e usb: musb: fix runtime PM in debugfs
MUSB driver now has runtime PM support, but the debugfs driver misses
the PM _get/_put() calls, which could cause MUSB register access
failure.

Cc: stable@vger.kernel.org # 4.9+
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-10 18:26:19 +01:00
David S. Miller
2f8225e834 Merge branch 'r8152-fix-autosuspend'
Hayes Wang says:

====================
r8152: fix autosuspend issue

Avoid rx is split into two parts when runtime suspend occurs.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10 11:46:47 -05:00
hayeswang
75dc692eda r8152: fix rx issue for runtime suspend
Pause the rx and make sure the rx fifo is empty when the autosuspend
occurs.

If the rx data comes when the driver is canceling the rx urb, the host
controller would stop getting the data from the device and continue
it after next rx urb is submitted. That is, one continuing data is
split into two different urb buffers. That let the driver take the
data as a rx descriptor, and unexpected behavior happens.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10 11:46:46 -05:00
hayeswang
8fb2806168 r8152: split rtl8152_suspend function
Split rtl8152_suspend() into rtl8152_system_suspend() and
rtl8152_rumtime_suspend().

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10 11:46:46 -05:00
David Disseldorp
87156518da target: support XCOPY requests without parameters
SPC4r37 6.4.1 EXTENDED COPY(LID4) states (also applying to LID1 reqs):
  A parameter list length of zero specifies that the copy manager shall
  not transfer any data or alter any internal state, and this shall not
  be considered an error.

This behaviour can be tested using the libiscsi ExtendedCopy.ParamHdr
test.

Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
2017-01-10 08:41:30 -08:00
David Disseldorp
f94fd098f6 target: check for XCOPY parameter truncation
Check for XCOPY header, CSCD descriptor and segment descriptor list
truncation, and respond accordingly.

SPC4r37 6.4.1 EXTENDED COPY(LID4) states (also applying to LID1 reqs):
  If the parameter list length causes truncation of the parameter list,
  then the copy manager shall transfer no data and shall terminate the
  EXTENDED COPY command with CHECK CONDITION status, with the sense key
  set to ILLEGAL REQUEST, and the additional sense code set to PARAMETER
  LIST LENGTH ERROR.

This behaviour can be tested using the libiscsi ExtendedCopy.ParamHdr
test.

Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
2017-01-10 08:41:27 -08:00
David Disseldorp
66640d35c1 target: use XCOPY segment descriptor CSCD IDs
The XCOPY specification in SPC4r37 states that the XCOPY source and
destination device(s) should be derived from the copy source and copy
destination (CSCD) descriptor IDs in the XCOPY segment descriptor.

The CSCD IDs are generally (for block -> block copies), indexes into
the corresponding CSCD descriptor list, e.g.
=================================
EXTENDED COPY Header
=================================
CSCD Descriptor List
- entry 0
  + LU ID <--------------<------------------\
- entry 1                                   |
  + LU ID <______________<_____________     |
=================================      |    |
Segment Descriptor List                |    |
- segment 0                            |    |
  + src CSCD ID = 0 --------->---------+----/
  + dest CSCD ID = 1 ___________>______|
  + len
  + src lba
  + dest lba
=================================

Currently LIO completely ignores the src and dest CSCD IDs in the
Segment Descriptor List, and instead assumes that the first entry in the
CSCD list corresponds to the source, and the second to the destination.

This commit removes this assumption, by ensuring that the Segment
Descriptor List is parsed prior to processing the CSCD Descriptor List.
CSCD Descriptor List processing is modified to compare the current list
index with the previously obtained src and dest CSCD IDs.

Additionally, XCOPY requests where the src and dest CSCD IDs refer to
the CSCD Descriptor List entry can now be successfully processed.

Fixes: cbf031f ("target: Add support for EXTENDED_COPY copy offload")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=191381
Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
2017-01-10 08:41:19 -08:00
David Disseldorp
f184210bca target: check XCOPY segment descriptor CSCD IDs
Ensure that the segment descriptor CSCD descriptor ID values correspond
to CSCD descriptor entries located in the XCOPY command parameter list.
SPC4r37 6.4.6.1 Table 150 specifies this range as 0000h to 07FFh, where
the CSCD descriptor location in the parameter list can be located via:
16 + (id * 32)

Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
[ bvanassche: inserted "; " in the format string of an error message
  and also moved a "||" operator from the start of a line to the end
  of the previous line ]
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
2017-01-10 08:41:13 -08:00
David Disseldorp
94aae4caac target: simplify XCOPY wwn->se_dev lookup helper
target_xcopy_locate_se_dev_e4() is used to locate an se_dev, based on
the WWN provided with the XCOPY request. Remove a couple of unneeded
arguments, and rely on the caller for the src/dst test.

Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
2017-01-10 08:41:12 -08:00
David Disseldorp
c243849720 target: return UNSUPPORTED TARGET/SEGMENT DESC TYPE CODE sense
Use UNSUPPORTED TARGET DESCRIPTOR TYPE CODE and UNSUPPORTED SEGMENT
DESCRIPTOR TYPE CODE additional sense codes if a descriptor type in an
XCOPY request is not supported, as specified in spc4r37 6.4.5 and 6.4.6.

Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
2017-01-10 08:41:09 -08:00
David Disseldorp
7d38706669 target: bounds check XCOPY total descriptor list length
spc4r37 6.4.3.5 states:
  If the combined length of the CSCD descriptors and segment descriptors
  exceeds the allowed value, then the copy manager shall terminate the
  command with CHECK CONDITION status, with the sense key set to ILLEGAL
  REQUEST, and the additional sense code set to PARAMETER LIST LENGTH
  ERROR.

This functionality can be tested using the libiscsi
ExtendedCopy.DescrLimits test.

Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
2017-01-10 08:41:04 -08:00
David Disseldorp
af9f62c168 target: bounds check XCOPY segment descriptor list
Check the length of the XCOPY request segment descriptor list against
the value advertised via the MAXIMUM SEGMENT DESCRIPTOR COUNT field in
the RECEIVE COPY OPERATING PARAMETERS response.

spc4r37 6.4.3.5 states:
  If the number of segment descriptors exceeds the allowed number, the
  copy manager shall terminate the command with CHECK CONDITION status,
  with the sense key set to ILLEGAL REQUEST, and the additional sense
  code set to TOO MANY SEGMENT DESCRIPTORS.

This functionality is testable using the libiscsi
ExtendedCopy.DescrLimits test.

Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
2017-01-10 08:40:58 -08:00
David Disseldorp
61c359194c target: use XCOPY TOO MANY TARGET DESCRIPTORS sense
spc4r37 6.4.3.4 states:
  If the number of CSCD descriptors exceeds the allowed number, the copy
  manager shall terminate the command with CHECK CONDITION status, with
  the sense key set to ILLEGAL REQUEST, and the additional sense code
  set to TOO MANY TARGET DESCRIPTORS.

LIO currently responds with INVALID FIELD IN PARAMETER LIST, which sees
it fail the libiscsi ExtendedCopy.DescrLimits test.

Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
2017-01-10 08:40:43 -08:00
David Disseldorp
e864212078 target: add XCOPY target/segment desc sense codes
As defined in http://www.t10.org/lists/asc-num.htm. To be used during
validation of XCOPY target and segment descriptor lists.

Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
2017-01-10 08:40:32 -08:00
Tobias Klauser
dc647ec88e net: socket: Make unnecessarily global sockfs_setattr() static
Make sockfs_setattr() static as it is not used outside of net/socket.c

This fixes the following GCC warning:
net/socket.c:534:5: warning: no previous prototype for ‘sockfs_setattr’ [-Wmissing-prototypes]

Fixes: 86741ec254 ("net: core: Add a UID field to struct sock.")
Cc: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10 11:29:50 -05:00
David S. Miller
2bc979f273 wireless-drivers fixes for 4.10
Only two fixes at this time. The rtlwifi fix is an important one as it
 fixes a reported oops and Linus was already asking about it. The
 orinoco fix is not tested on a real device, because it's old legacy
 hardware and hardly no-one use it, but it should fix a (theoretical)
 issue with VMAP_STACK.
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Merge tag 'wireless-drivers-for-davem-2017-01-10' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
wireless-drivers fixes for 4.10

Only two fixes at this time. The rtlwifi fix is an important one as it
fixes a reported oops and Linus was already asking about it. The
orinoco fix is not tested on a real device, because it's old legacy
hardware and hardly no-one use it, but it should fix a (theoretical)
issue with VMAP_STACK.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10 11:27:46 -05:00
Andy Lutomirski
620f1a632e wusbcore: Fix one more crypto-on-the-stack bug
The driver put a constant buffer of all zeros on the stack and
pointed a scatterlist entry at it.  This doesn't work with virtual
stacks.  Use ZERO_PAGE instead.

Cc: stable@vger.kernel.org # 4.9 only
Reported-by: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-10 17:03:42 +01:00
Johan Hovold
146cc8a17a USB: serial: kl5kusb105: fix line-state error handling
The current implementation failed to detect short transfers when
attempting to read the line state, and also, to make things worse,
logged the content of the uninitialised heap transfer buffer.

Fixes: abf492e7b3 ("USB: kl5kusb105: fix DMA buffers on stack")
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
2017-01-10 16:42:26 +01:00
Murali Karicheri
a782b5f986 PCI: designware: Check for iATU unroll only on platforms that use ATU
Previously we checked for iATU unroll support by reading PCIE_ATU_VIEWPORT
even on platforms, e.g., Keystone, that do not have ATU ports.  This can
cause bad behavior such as asynchronous external aborts:

  OF: PCI:   MEM 0x60000000..0x6fffffff -> 0x60000000
  Unhandled fault: asynchronous external abort (0x1211) at 0x00000000
  pgd = c0003000
  [00000000] *pgd=80000800004003, *pmd=00000000
  Internal error: : 1211 [#1] PREEMPT SMP ARM
  Modules linked in:
  CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.9.0-00009-g6ff59d2-dirty #7
  Hardware name: Keystone
  task: eb878000 task.stack: eb866000
  PC is at dw_pcie_setup_rc+0x24/0x380
  LR is at ks_pcie_host_init+0x10/0x170

Move the dw_pcie_iatu_unroll_enabled() check so we only call it on
platforms that do not use the ATU.  These platforms supply their own
->rd_other_conf() and ->wr_other_conf() methods.

[bhelgaas: changelog]
Fixes: a0601a4705 ("PCI: designware: Add iATU Unroll feature")
Fixes: 416379f9eb ("PCI: designware: Check for iATU unroll support after initializing host")
Tested-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-By: Joao Pinto <jpinto@synopsys.com>
CC: stable@vger.kernel.org	# v4.9+
2017-01-10 08:43:24 -06:00
Heinrich Schuchardt
19a91dd4e3 MMC: meson: avoid possible NULL dereference
No actual segmentation faults were observed but the coding is
at least inconsistent.

irqreturn_t meson_mmc_irq():

We should not dereference host before checking it.

meson_mmc_irq_thread():

If cmd or mrq are NULL we should not dereference them after
writing a warning.

Fixes: 51c5d8447b MMC: meson: initial support for GX platforms
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-01-10 11:53:00 +01:00
Mark Brown
42e0ebdef5 Merge remote-tracking branches 'asoc/fix/nau8825', 'asoc/fix/rt5645', 'asoc/fix/tlv320aic3x' and 'asoc/fix/topology' into asoc-linus 2017-01-10 10:47:54 +00:00
Mark Brown
1c681a1921 Merge remote-tracking branches 'asoc/fix/arizona', 'asoc/fix/dpcm', 'asoc/fix/dwc', 'asoc/fix/fsl-ssi' and 'asoc/fix/hdmi-codec' into asoc-linus 2017-01-10 10:47:50 +00:00
Mark Brown
df3c63d39d Merge remote-tracking branch 'asoc/fix/rcar' into asoc-linus 2017-01-10 10:47:48 +00:00
Mark Brown
7dfe7e18b5 Merge remote-tracking branch 'asoc/fix/intel' into asoc-linus 2017-01-10 10:47:47 +00:00
Mark Brown
01c2a84c49 Merge remote-tracking branch 'asoc/fix/component' into asoc-linus 2017-01-10 10:47:45 +00:00
Dennis Kadioglu
2e40795c3b ALSA: usb-audio: Add a quirk for Plantronics BT600
Plantronics BT600 does not support reading the sample rate which leads
to many lines of "cannot get freq at ep 0x1" and "cannot get freq at
ep 0x82". This patch adds the USB ID of the BT600 to quirks.c and
avoids those error messages.

Signed-off-by: Dennis Kadioglu <denk@post.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-01-10 11:42:31 +01:00
Gu Zheng
497de07d89 tmpfs: clear S_ISGID when setting posix ACLs
This change was missed the tmpfs modification in In CVE-2016-7097
commit 073931017b ("posix_acl: Clear SGID bit when setting
file permissions")
It can test by xfstest generic/375, which failed to clear
setgid bit in the following test case on tmpfs:

  touch $testfile
  chown 100:100 $testfile
  chmod 2755 $testfile
  _runas -u 100 -g 101 -- setfacl -m u::rwx,g::rwx,o::rwx $testfile

Signed-off-by: Gu Zheng <guzheng1@huawei.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-01-10 01:29:48 -05:00
Peter Ujfalusi
527a275913 dmaengine: omap-dma: Fix the port_window support
We do not yet have users of port_window. The following errors were found
when converting the tusb6010_omap.c musb driver:

- The peripheral side must have SRC_/DST_PACKED disabled
- when configuring the burst for the peripheral side the memory side
  configuration were overwritten: d->csdp = ... -> d->csdp |= ...
- The EI and FI were configured for the wrong sides of the transfers.

With these changes and the converted tus6010_omap.c I was able to verify
that things are working as they expected to work.

Fixes: 201ac4861c ("dmaengine: omap-dma: Support for slave devices with data port window")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2017-01-10 11:08:01 +05:30
Krister Johansen
21d25f6a42 dmaengine: iota: ioat_alloc_chan_resources should not perform sleeping allocations.
On a kernel with DEBUG_LOCKS, ioat_free_chan_resources triggers an
in_interrupt() warning.  With PROVE_LOCKING, it reports detecting a
SOFTIRQ-safe to SOFTIRQ-unsafe lock ordering in the same code path.

This is because dma_generic_alloc_coherent() checks if the GFP flags
permit blocking.  It allocates from different subsystems if blocking is
permitted.  The free path knows how to return the memory to the correct
allocator.  If GFP_KERNEL is specified then the alloc and free end up
going through cma_alloc(), which uses mutexes.

Given that ioat_free_chan_resources() can be called in interrupt
context, ioat_alloc_chan_resources() must specify GFP_NOWAIT so that the
allocations do not block and instead use an allocator that uses
spinlocks.

Signed-off-by: Krister Johansen <kjlx@templeofstupid.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2017-01-10 10:41:51 +05:30
Dave Jones
c3c4239465 scsi: qla2xxx: Fix apparent cut-n-paste error.
Commit 093df73771 ("scsi: qla2xxx: Fix Target mode handling with
Multiqueue changes.") introduces two bodies of code that look similar
but with s/req/rsp/ in the second instance.  But in one case, it looks
like this conversion was missed.

Signed-off-by: Dave Jones <davej@codemonkey.org.uk>
Reviewed-by: Laurence Oberman <loberman@redhat.com>
Acked-by: Quinn Tran <Quinn.Tran@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-09 23:23:09 -05:00
Milan P. Gandhi
c7702b8c22 scsi: qla2xxx: Get mutex lock before checking optrom_state
There is a race condition with qla2xxx optrom functions where one thread
might modify optrom buffer, optrom_state while other thread is still
reading from it.

In couple of crashes, it was found that we had successfully passed the
following 'if' check where we confirm optrom_state to be
QLA_SREADING. But by the time we acquired mutex lock to proceed with
memory_read_from_buffer function, some other thread/process had already
modified that option rom buffer and optrom_state from QLA_SREADING to
QLA_SWAITING. Then we got ha->optrom_buffer 0x0 and crashed the system:

        if (ha->optrom_state != QLA_SREADING)
                return 0;

        mutex_lock(&ha->optrom_mutex);
        rval = memory_read_from_buffer(buf, count, &off, ha->optrom_buffer,
            ha->optrom_region_size);
        mutex_unlock(&ha->optrom_mutex);

With current optrom function we get following crash due to a race
condition:

[ 1479.466679] BUG: unable to handle kernel NULL pointer dereference at           (null)
[ 1479.466707] IP: [<ffffffff81326756>] memcpy+0x6/0x110
[...]
[ 1479.473673] Call Trace:
[ 1479.474296]  [<ffffffff81225cbc>] ? memory_read_from_buffer+0x3c/0x60
[ 1479.474941]  [<ffffffffa01574dc>] qla2x00_sysfs_read_optrom+0x9c/0xc0 [qla2xxx]
[ 1479.475571]  [<ffffffff8127e76b>] read+0xdb/0x1f0
[ 1479.476206]  [<ffffffff811fdf9e>] vfs_read+0x9e/0x170
[ 1479.476839]  [<ffffffff811feb6f>] SyS_read+0x7f/0xe0
[ 1479.477466]  [<ffffffff816964c9>] system_call_fastpath+0x16/0x1b

Below patch modifies qla2x00_sysfs_read_optrom,
qla2x00_sysfs_write_optrom functions to get the mutex_lock before
checking ha->optrom_state to avoid similar crashes.

The patch was applied and tested and same crashes were no longer
observed again.

Tested-by: Milan P. Gandhi <mgandhi@redhat.com>
Signed-off-by: Milan P. Gandhi <mgandhi@redhat.com>
Reviewed-by: Laurence Oberman <loberman@redhat.com>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-09 23:15:02 -05:00
Masahiro Yamada
64cbff449a ARM, ARM64: dts: drop "arm,amba-bus" in favor of "simple-bus" part 3
Tree-wide replacement was done by commit 2ef7d5f342 ("ARM, ARM64:
dts: drop "arm,amba-bus" in favor of "simple-bus"), then the 2nd
round by commit 15b7cc78f0 ("arm64: dts: drop "arm,amba-bus" in
favor of "simple-bus" part 2").

Here, some new users have appeared for Linux v4.10-rc1.  Eliminate
them now.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2017-01-09 19:11:42 -08:00
Olof Johansson
9511ecab07 arm: Xilinx ZynqMP DT fixes for v4.10
- Fix dtc warnings
 - Fix i2c compatible string
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Merge tag 'zynmp-dt-fixes-for-4.10' of https://github.com/Xilinx/linux-xlnx into fixes

arm: Xilinx ZynqMP DT fixes for v4.10

- Fix dtc warnings
- Fix i2c compatible string

* tag 'zynmp-dt-fixes-for-4.10' of https://github.com/Xilinx/linux-xlnx:
  ARM64: zynqmp: Fix i2c node's compatible string
  ARM64: zynqmp: Fix W=1 dtc 1.4 warnings

Signed-off-by: Olof Johansson <olof@lixom.net>
2017-01-09 19:06:15 -08:00
Gary Bisson
37530e7460 ARM: dts: imx6qdl-nitrogen6_som2: fix sgtl5000 pinctrl init
Since the codec is probed first, the pinctrl node should be
under the codec node.

The codec init was working for this board since U-Boot was
already setting GPIO_0 as CLKO1 but better fix it anyway.

Fixes: 3faa1bb2e8 ("ARM: dts: imx: add Boundary Devices Nitrogen6_SOM2 support")
Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2017-01-10 10:51:14 +08:00
Gary Bisson
6ab5c2b662 ARM: dts: imx6qdl-nitrogen6_max: fix sgtl5000 pinctrl init
This patch fixes the following error:
sgtl5000 0-000a: Error reading chip id -6
imx-sgtl5000 sound: ASoC: CODEC DAI sgtl5000 not registered
imx-sgtl5000 sound: snd_soc_register_card failed (-517)

The problem was that the pinctrl group was linked to the sound driver
instead of the codec node. Since the codec is probed first, the sys_mclk
was missing and it would therefore fail to initialize.

Fixes: b32e700256 ("ARM: dts: imx: add Boundary Devices Nitrogen6_Max board")
Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2017-01-10 10:50:11 +08:00