Commit Graph

886910 Commits

Author SHA1 Message Date
Paulo Alcantara (SUSE)
3345bb44ba cifs: Fix lookup of SMB connections on multichannel
With the addition of SMB session channels, we introduced new TCP
server pointers that have no sessions or tcons associated with them.

In this case, when we started looking for TCP connections, we might
end up picking session channel rather than the master connection,
hence failing to get either a session or a tcon.

In order to fix that, this patch introduces a new "is_channel" field
to TCP_Server_Info structure so we can skip session channels during
lookup of connections.

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2019-12-04 11:50:32 -06:00
Jens Axboe
901e59bba9 io_uring: allow IO_SQE_* flags on IORING_OP_TIMEOUT
There's really no reason why we forbid things like link/drain etc on
regular timeout commands. Enable the usual SQE flags on timeouts.

Reported-by: 李通洲 <carter.li@eoitek.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-12-04 10:34:03 -07:00
Christoph Hellwig
1cea335d1d iomap: fix sub-page uptodate handling
bio completions can race when a page spans more than one file system
block.  Add a spinlock to synchronize marking the page uptodate.

Fixes: 9dc55f1389 ("iomap: add support for sub-pagesize buffered I/O without buffer heads")
Reported-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-12-04 09:33:52 -08:00
Alex Williamson
9917b54ade Merge branch 'v5.5/vfio/jiang-yi-irq-bypass-unregister-v1' into v5.5/vfio/next 2019-12-04 10:15:56 -07:00
Tomi Valkeinen
d9c148cfaf drm/omap: fix dma_addr refcounting
cec4fa7511 ("drm/omap: use refcount API to
track the number of users of dma_addr") changed omap_gem.c to use
refcounting API to track dma_addr uses.  However, the driver only tracks
the refcounts for non-contiguous buffers, and the patch didn't fully
take this in account.

After the patch, the driver always decreased refcount in omap_gem_unpin,
instead of decreasing the refcount only for non-contiguous buffers. This
leads to refcounting mismatch.

As for the contiguous cases the refcount is never increased, fix this
issue by returning from omap_gem_unpin if the buffer being unpinned is
contiguous.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191114080343.30704-1-tomi.valkeinen@ti.com
Fixes: cec4fa7511 ("drm/omap: use refcount API to track the number of users of dma_addr")
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-12-04 19:11:28 +02:00
Jens Axboe
bca1c43cb2 null_blk: remove unused variable warning on !CONFIG_BLK_DEV_ZONED
If BLK_DEV_ZONED isn't set, 'ret' isn't used. This makes gcc complain,
rightfully. Move ret where it is used.

Fixes: 979d54475e ("null_blk: cleanup null_gendisk_register")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-12-04 09:17:41 -07:00
Ming Lei
f1acbf2186 brd: warn on un-aligned buffer
Queue dma alignment limit requires users(fs, target, ...) of block layer
to pass aligned buffer.

So far brd doesn't support un-aligned buffer, even though it is easy
to support it.

However, given brd is often used for debug purpose, and there are other
drivers which can't support un-aligned buffer too.

So add warning so that brd users know what to fix.

Reported-by: Stephen Rust <srust@blockbridge.com>
Cc: Stephen Rust <srust@blockbridge.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-12-04 09:04:26 -07:00
Ming Lei
36582a5a45 brd: remove max_hw_sectors queue limit
Now we depend on blk_queue_split() to respect most of queue limit
(the only one exception could be dma alignment), however
blk_queue_split() isn't used for brd, so this limit isn't respected
since v4.3.

Also max_hw_sectors limit doesn't play a big role for brd, which is
added since brd is added to tree for unknown reason.

So remove it.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-12-04 09:04:25 -07:00
Adrian Hunter
29f6eeca0e perf inject: Fix processing of ID index for injected instruction tracing
The ID index event is used when decoding, but can result in the
following error:

 $ perf record --aux-sample -e '{intel_pt//,branch-misses}:u' ls
 $ perf inject -i perf.data -o perf.data.inj --itrace=be
 $ perf script -i perf.data.inj
 0x1020 [0x410]: failed to process type: 69 [No such file or directory]

Fix by having 'perf inject' drop the ID index event.

Fixes: c0a6de06c4 ("perf record: Add support for AUX area sampling")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20191204120800.8138-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-12-04 12:39:53 -03:00
Ravi Bangoria
bb30acae4c perf report: Bail out --mem-mode if mem info is not available
If perf.data is recorded without -d, don't allow user to use --mem-mode
with 'perf report'. symbol_daddr and phys_daddr can be recorded
separately and may be present in the perf.data but at the report time
they are associated with mem-mode fields and thus this restriction
applies to them as well.

Before:
  $ perf record ls
  $ perf report --mem-mode --stdio
  # Overhead  Local Weight  Memory access  Symbol
  # ........  ............  .............  .......................
      55.56%  0             N/A            [k] 0xffffffff81a00ae7

After:
  $ perf report --mem-mode --stdio
  Error:
  Selected --mem-mode but no mem data. Did you call perf record without -d?

Suggested-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/20191114132213.5419-4-ravi.bangoria@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-12-04 12:34:02 -03:00
Ravi Bangoria
aa6b3c9923 perf report: Make -F more strict like -s
Currently -F allows branch-mode / mem-mode fields with -F even
when perf report is not running in that mode. Don't allow that.

Suggested-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/20191114132213.5419-3-ravi.bangoria@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-12-04 12:32:40 -03:00
Ravi Bangoria
ae87405fb5 perf report/top TUI: Replace pr_err() with ui__error()
pr_err() in TUI mode does not print anyting on the screen and just
quits.

Replace such pr_err() with ui__error().

Before:

  $ perf report -s +
  $

After:

  $ perf report -s +

    ┌─Error:────────────────┐
    │Invalid --sort key: `+'│
    │                       │
    │Press any key...       │
    └───────────────────────┘

Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/20191114132213.5419-2-ravi.bangoria@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-12-04 12:27:14 -03:00
Takashi Iwai
4cc8d6505a ALSA: pcm: oss: Avoid potential buffer overflows
syzkaller reported an invalid access in PCM OSS read, and this seems
to be an overflow of the internal buffer allocated for a plugin.
Since the rate plugin adjusts its transfer size dynamically, the
calculation for the chained plugin might be bigger than the given
buffer size in some extreme cases, which lead to such an buffer
overflow as caught by KASAN.

Fix it by limiting the max transfer size properly by checking against
the destination size in each plugin transfer callback.

Reported-by: syzbot+f153bde47a62e0b05f83@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20191204144824.17801-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-04 15:51:30 +01:00
Mike Marshall
f9bbb68233 orangefs: posix open permission checking...
Orangefs has no open, and orangefs checks file permissions
on each file access. Posix requires that file permissions
be checked on open and nowhere else. Orangefs-through-the-kernel
needs to seem posix compliant.

The VFS opens files, even if the filesystem provides no
method. We can see if a file was successfully opened for
read and or for write by looking at file->f_mode.

When writes are flowing from the page cache, file is no
longer available. We can trust the VFS to have checked
file->f_mode before writing to the page cache.

The mode of a file might change between when it is opened
and IO commences, or it might be created with an arbitrary mode.

We'll make sure we don't hit EACCES during the IO stage by
using UID 0. Some of the time we have access without changing
to UID 0 - how to check?

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2019-12-04 08:52:55 -05:00
Steven Rostedt (VMware)
a356646a56 tracing: Do not create directories if lockdown is in affect
If lockdown is disabling tracing on boot up, it prevents the tracing files
from even bering created. But when that happens, there's several places that
will give a warning that the files were not created as that is usually a
sign of a bug.

Add in strategic locations where a check is made to see if tracing is
disabled by lockdown, and if it is, do not go further, and fail silently
(but print that tracing is disabled by lockdown, without doing a WARN_ON()).

Cc: Matthew Garrett <mjg59@google.com>
Fixes: 17911ff38a ("tracing: Add locked_down checks to the open calls of files created for tracefs")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2019-12-04 08:27:15 -05:00
Vincenzo Frascino
5522634562 powerpc: Fix vDSO clock_getres()
clock_getres in the vDSO library has to preserve the same behaviour
of posix_get_hrtimer_res().

In particular, posix_get_hrtimer_res() does:
    sec = 0;
    ns = hrtimer_resolution;
and hrtimer_resolution depends on the enablement of the high
resolution timers that can happen either at compile or at run time.

Fix the powerpc vdso implementation of clock_getres keeping a copy of
hrtimer_resolution in vdso data and using that directly.

Fixes: a7f290dad3 ("[PATCH] powerpc: Merge vdso's and add vdso support to 32 bits kernel")
Cc: stable@vger.kernel.org
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
[chleroy: changed CLOCK_REALTIME_RES to CLOCK_HRTIMER_RES]
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/a55eca3a5e85233838c2349783bcb5164dae1d09.1575273217.git.christophe.leroy@c-s.fr
2019-12-05 00:13:55 +11:00
Aneesh Kumar K.V
6f4679b956 powerpc/pmem: Fix kernel crash due to wrong range value usage in flush_dcache_range
This patch fix the below kernel crash.

 BUG: Unable to handle kernel data access on read at 0xc000000380000000
 Faulting instruction address: 0xc00000000008b6f0
cpu 0x5: Vector: 300 (Data Access) at [c0000000d8587790]
    pc: c00000000008b6f0: arch_remove_memory+0x150/0x210
    lr: c00000000008b720: arch_remove_memory+0x180/0x210
    sp: c0000000d8587a20
   msr: 800000000280b033
   dar: c000000380000000
 dsisr: 40000000
  current = 0xc0000000d8558600
  paca    = 0xc00000000fff8f00   irqmask: 0x03   irq_happened: 0x01
    pid   = 1220, comm = ndctl
enter ? for help
 memunmap_pages+0x33c/0x410
 devm_action_release+0x30/0x50
 release_nodes+0x30c/0x3a0
 device_release_driver_internal+0x178/0x240
 unbind_store+0x74/0x190
 drv_attr_store+0x44/0x60
 sysfs_kf_write+0x74/0xa0
 kernfs_fop_write+0x1b0/0x260
 __vfs_write+0x3c/0x70
 vfs_write+0xe4/0x200
 ksys_write+0x7c/0x140
 system_call+0x5c/0x68

Fixes: 076265907c ("powerpc: Chunk calls to flush_dcache_range in arch_*_memory")
Reported-by: Sachin Sant <sachinp@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191204052909.59145-1-aneesh.kumar@linux.ibm.com
2019-12-05 00:11:45 +11:00
Cédric Le Goater
b67a95f2ab powerpc/xive: Skip ioremap() of ESB pages for LSI interrupts
The PCI INTx interrupts and other LSI interrupts are handled differently
under a sPAPR platform. When the interrupt source characteristics are
queried, the hypervisor returns an H_INT_ESB flag to inform the OS
that it should be using the H_INT_ESB hcall for interrupt management
and not loads and stores on the interrupt ESB pages.

A default -1 value is returned for the addresses of the ESB pages. The
driver ignores this condition today and performs a bogus IO mapping.
Recent changes and the DEBUG_VM configuration option make the bug
visible with :

  kernel BUG at arch/powerpc/include/asm/book3s/64/pgtable.h:612!
  Oops: Exception in kernel mode, sig: 5 [#1]
  LE PAGE_SIZE=64K MMU=Radix MMU=Hash SMP NR_CPUS=1024 NUMA pSeries
  Modules linked in:
  CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.4.0-0.rc6.git0.1.fc32.ppc64le #1
  NIP:  c000000000f63294 LR: c000000000f62e44 CTR: 0000000000000000
  REGS: c0000000fa45f0d0 TRAP: 0700   Not tainted  (5.4.0-0.rc6.git0.1.fc32.ppc64le)
  ...
  NIP ioremap_page_range+0x4c4/0x6e0
  LR  ioremap_page_range+0x74/0x6e0
  Call Trace:
    ioremap_page_range+0x74/0x6e0 (unreliable)
    do_ioremap+0x8c/0x120
    __ioremap_caller+0x128/0x140
    ioremap+0x30/0x50
    xive_spapr_populate_irq_data+0x170/0x260
    xive_irq_domain_map+0x8c/0x170
    irq_domain_associate+0xb4/0x2d0
    irq_create_mapping+0x1e0/0x3b0
    irq_create_fwspec_mapping+0x27c/0x3e0
    irq_create_of_mapping+0x98/0xb0
    of_irq_parse_and_map_pci+0x168/0x230
    pcibios_setup_device+0x88/0x250
    pcibios_setup_bus_devices+0x54/0x100
    __of_scan_bus+0x160/0x310
    pcibios_scan_phb+0x330/0x390
    pcibios_init+0x8c/0x128
    do_one_initcall+0x60/0x2c0
    kernel_init_freeable+0x290/0x378
    kernel_init+0x2c/0x148
    ret_from_kernel_thread+0x5c/0x80

Fixes: bed81ee181 ("powerpc/xive: introduce H_INT_ESB hcall")
Cc: stable@vger.kernel.org # v4.14+
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Tested-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191203163642.2428-1-clg@kaod.org
2019-12-05 00:11:45 +11:00
Christophe Leroy
71eb40fc53 powerpc/kasan: Fix boot failure with RELOCATABLE && FSL_BOOKE
When enabling CONFIG_RELOCATABLE and CONFIG_KASAN on FSL_BOOKE,
the kernel doesn't boot.

relocate_init() requires KASAN early shadow area to be set up because
it needs access to the device tree through generic functions.

Call kasan_early_init() before calling relocate_init()

Reported-by: Lexi Shao <shaolexi@huawei.com>
Fixes: 2edb16efc8 ("powerpc/32: Add KASAN support")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/b58426f1664a4b344ff696d18cacf3b3e8962111.1575036985.git.christophe.leroy@c-s.fr
2019-12-05 00:11:43 +11:00
Thierry Reding
d66dfcf80d drm/tegra: Run hub cleanup on ->remove()
The call to tegra_display_hub_cleanup() that takes care of disabling the
window groups is missing from the driver's ->remove() callback. Call it
to make sure the runtime PM reference counts for the display controllers
are balanced.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-12-04 13:38:16 +01:00
Thierry Reding
b06e145f70 drm/tegra: sor: Make the +5V HDMI supply optional
The SOR supports multiple display modes, but only when driving an HDMI
monitor does it make sense to control the +5V power supply. eDP and DP
don't need this, so make it optional.

This fixes a crash observed during system suspend/resume.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-12-04 13:38:01 +01:00
Thierry Reding
a8817489dc drm/tegra: Silence expected errors on IOMMU attach
Subdevices may not be hooked up to an IOMMU via device tree. Detect such
situations and avoid confusing users by not emitting an error message.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-12-04 13:37:44 +01:00
Thierry Reding
82d73874d4 drm/tegra: vic: Export module device table
Export the module device table to ensure the VIC compatible strings are
listed in the module's aliases table. This in turn causes the driver to
be automatically loaded on boot if VIC is the only enabled subdevice of
the logical host1x DRM device.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-12-04 13:37:27 +01:00
Thierry Reding
be0b23f28c drm/tegra: sor: Implement system suspend/resume
Upon system suspend, make sure the +5V HDMI regulator is disabled. This
avoids potentially leaking current to the HDMI connector. This also
makes sure that upon resume the regulator is enabled again, which in
some cases is necessary to properly restore the state of the supply on
resume.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-12-04 13:37:10 +01:00
Thierry Reding
c52e167b41 drm/tegra: Use proper IOVA address for cursor image
The IOVA address for the cursor is the result of mapping the buffer
object for the given display controller. Make sure to use the proper
IOVA address as stored in the cursor's plane state.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-12-04 13:36:52 +01:00
Thierry Reding
49f821919b drm/tegra: gem: Remove premature import restrictions
All the display related blocks on Tegra require contiguous memory. Using
the DMA API, there is no knowing at import time which device will end up
using the buffer, so it's not known whether or not an IOMMU will be used
to map the buffer.

Move the check for non-contiguous buffers/mappings to the tegra_dc_pin()
function which is now the earliest point where it is known if a DMA BUF
can be used by the given device or not.

v2: add check for contiguous buffer/mapping in tegra_dc_pin()

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-12-04 13:36:23 +01:00
Thierry Reding
1f16deac76 drm/tegra: gem: Properly pin imported buffers
Buffers that are imported from a DMA-BUF don't have pages allocated with
them. At the same time an SG table for them can't be derived using the
DMA API helpers because the necessary information doesn't exist. However
there's already an SG table that was created during import, so this can
simply be duplicated.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-12-04 13:35:53 +01:00
Thierry Reding
9569c3e922 drm/tegra: hub: Remove bogus connection mutex check
The Tegra DRM never actually took that lock, so the driver was broken
until generic locking was added in commit:

	commit b962a12050
	Author: Rob Clark <robdclark@gmail.com>
	Date:   Mon Oct 22 14:31:22 2018 +0200

	    drm/atomic: integrate modeset lock with private objects

It's now no longer necessary to take that lock, so drop the check.

v2: add rationale for why it is now safe to drop the check (Daniel)

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-12-04 13:34:48 +01:00
Mark Brown
cba779d80a arm64: mm: Fix column alignment for UXN in kernel_page_tables
UXN is the only individual PTE bit other than the PTE_ATTRINDX_MASK ones
which doesn't have both a set and a clear value provided, meaning that the
columns in the table won't all be aligned. The PTE_ATTRINDX_MASK values
are all both mutually exclusive and longer so are listed last to make a
single final column for those values. Ensure everything is aligned by
providing a clear value for UXN.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2019-12-04 11:44:29 +00:00
Mark Rutland
ca2ef4ffab arm64: insn: consistently handle exit text
A kernel built with KASAN && FTRACE_WITH_REGS && !MODULES, produces a
boot-time splat in the bowels of ftrace:

| [    0.000000] ftrace: allocating 32281 entries in 127 pages
| [    0.000000] ------------[ cut here ]------------
| [    0.000000] WARNING: CPU: 0 PID: 0 at kernel/trace/ftrace.c:2019 ftrace_bug+0x27c/0x328
| [    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 5.4.0-rc3-00008-g7f08ae53a7e3 #13
| [    0.000000] Hardware name: linux,dummy-virt (DT)
| [    0.000000] pstate: 60000085 (nZCv daIf -PAN -UAO)
| [    0.000000] pc : ftrace_bug+0x27c/0x328
| [    0.000000] lr : ftrace_init+0x640/0x6cc
| [    0.000000] sp : ffffa000120e7e00
| [    0.000000] x29: ffffa000120e7e00 x28: ffff00006ac01b10
| [    0.000000] x27: ffff00006ac898c0 x26: dfffa00000000000
| [    0.000000] x25: ffffa000120ef290 x24: ffffa0001216df40
| [    0.000000] x23: 000000000000018d x22: ffffa0001244c700
| [    0.000000] x21: ffffa00011bf393c x20: ffff00006ac898c0
| [    0.000000] x19: 00000000ffffffff x18: 0000000000001584
| [    0.000000] x17: 0000000000001540 x16: 0000000000000007
| [    0.000000] x15: 0000000000000000 x14: ffffa00010432770
| [    0.000000] x13: ffff940002483519 x12: 1ffff40002483518
| [    0.000000] x11: 1ffff40002483518 x10: ffff940002483518
| [    0.000000] x9 : dfffa00000000000 x8 : 0000000000000001
| [    0.000000] x7 : ffff940002483519 x6 : ffffa0001241a8c0
| [    0.000000] x5 : ffff940002483519 x4 : ffff940002483519
| [    0.000000] x3 : ffffa00011780870 x2 : 0000000000000001
| [    0.000000] x1 : 1fffe0000d591318 x0 : 0000000000000000
| [    0.000000] Call trace:
| [    0.000000]  ftrace_bug+0x27c/0x328
| [    0.000000]  ftrace_init+0x640/0x6cc
| [    0.000000]  start_kernel+0x27c/0x654
| [    0.000000] random: get_random_bytes called from print_oops_end_marker+0x30/0x60 with crng_init=0
| [    0.000000] ---[ end trace 0000000000000000 ]---
| [    0.000000] ftrace faulted on writing
| [    0.000000] [<ffffa00011bf393c>] _GLOBAL__sub_D_65535_0___tracepoint_initcall_level+0x4/0x28
| [    0.000000] Initializing ftrace call sites
| [    0.000000] ftrace record flags: 0
| [    0.000000]  (0)
| [    0.000000]  expected tramp: ffffa000100b3344

This is due to an unfortunate combination of several factors.

Building with KASAN results in the compiler generating anonymous
functions to register/unregister global variables against the shadow
memory. These functions are placed in .text.startup/.text.exit, and
given mangled names like _GLOBAL__sub_{I,D}_65535_0_$OTHER_SYMBOL. The
kernel linker script places these in .init.text and .exit.text
respectively, which are both discarded at runtime as part of initmem.

Building with FTRACE_WITH_REGS uses -fpatchable-function-entry=2, which
also instruments KASAN's anonymous functions. When these are discarded
with the rest of initmem, ftrace removes dangling references to these
call sites.

Building without MODULES implicitly disables STRICT_MODULE_RWX, and
causes arm64's patch_map() function to treat any !core_kernel_text()
symbol as something that can be modified in-place. As core_kernel_text()
is only true for .text and .init.text, with the latter depending on
system_state < SYSTEM_RUNNING, we'll treat .exit.text as something that
can be patched in-place. However, .exit.text is mapped read-only.

Hence in this configuration the ftrace init code blows up while trying
to patch one of the functions generated by KASAN.

We could try to filter out the call sites in .exit.text rather than
initializing them, but this would be inconsistent with how we handle
.init.text, and requires hooking into core bits of ftrace. The behaviour
of patch_map() is also inconsistent today, so instead let's clean that
up and have it consistently handle .exit.text.

This patch teaches patch_map() to handle .exit.text at init time,
preventing the boot-time splat above. The flow of patch_map() is
reworked to make the logic clearer and minimize redundant
conditionality.

Fixes: 3b23e4991f ("arm64: implement ftrace with regs")
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Torsten Duwe <duwe@suse.de>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2019-12-04 11:32:20 +00:00
Will Deacon
93b90414c3 arm64: mm: Fix initialisation of DMA zones on non-NUMA systems
John reports that the recently merged commit 1a8e1cef76 ("arm64: use
both ZONE_DMA and ZONE_DMA32") breaks the boot on his DB845C board:

  | Booting Linux on physical CPU 0x0000000000 [0x517f803c]
  | Linux version 5.4.0-mainline-10675-g957a03b9e38f
  | Machine model: Thundercomm Dragonboard 845c
  | [...]
  | Built 1 zonelists, mobility grouping on.  Total pages: -188245
  | Kernel command line: earlycon
  | firmware_class.path=/vendor/firmware/ androidboot.hardware=db845c
  | init=/init androidboot.boot_devices=soc/1d84000.ufshc
  | printk.devkmsg=on buildvariant=userdebug root=/dev/sda2
  | androidboot.bootdevice=1d84000.ufshc androidboot.serialno=c4e1189c
  | androidboot.baseband=sda
  | msm_drm.dsi_display0=dsi_lt9611_1080_video_display:
  | androidboot.slot_suffix=_a skip_initramfs rootwait ro init=/init
  |
  | <hangs indefinitely here>

This is because, when CONFIG_NUMA=n, zone_sizes_init() fails to handle
memblocks that fall entirely within the ZONE_DMA region and erroneously ends up
trying to add a negatively-sized region into the following ZONE_DMA32, which is
later interpreted as a large unsigned region by the core MM code.

Rework the non-NUMA implementation of zone_sizes_init() so that the start
address of the memblock being processed is adjusted according to the end of the
previous zone, which is then range-checked before updating the hole information
of subsequent zones.

Cc: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/lkml/CALAqxLVVcsmFrDKLRGRq7GewcW405yTOxG=KR3csVzQ6bXutkA@mail.gmail.com
Fixes: 1a8e1cef76 ("arm64: use both ZONE_DMA and ZONE_DMA32")
Reported-by: John Stultz <john.stultz@linaro.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2019-12-04 11:25:20 +00:00
Jim Mattson
7d73710d9c kvm: vmx: Stop wasting a page for guest_msrs
We will never need more guest_msrs than there are indices in
vmx_msr_index. Thus, at present, the guest_msrs array will not exceed
168 bytes.

Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-12-04 12:23:27 +01:00
Paolo Bonzini
433f4ba190 KVM: x86: fix out-of-bounds write in KVM_GET_EMULATED_CPUID (CVE-2019-19332)
The bounds check was present in KVM_GET_SUPPORTED_CPUID but not
KVM_GET_EMULATED_CPUID.

Reported-by: syzbot+e3f4897236c4eeb8af4f@syzkaller.appspotmail.com
Fixes: 84cffe499b ("kvm: Emulate MOVBE", 2013-10-29)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-12-04 12:14:41 +01:00
Paul Durrant
14855954f6 xen-blkback: allow module to be cleanly unloaded
Add a module_exit() to perform the necessary clean-up.

Signed-off-by: Paul Durrant <pdurrant@amazon.com>
Reviewed-by: "Roger Pau Monné" <roger.pau@citrix.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
2019-12-04 11:35:35 +01:00
Paul Durrant
196748a276 xen/xenbus: reference count registered modules
To prevent a PV driver module being removed whilst attached to its other
end, and hence xenbus calling into potentially invalid text, take a
reference on the module before calling the probe() method (dropping it if
unsuccessful) and drop the reference after returning from the remove()
method.

Suggested-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Paul Durrant <pdurrant@amazon.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
2019-12-04 11:35:32 +01:00
Michael Ellerman
4f4afc2c95 docs/core-api: Remove possibly confusing sub-headings from Bit Operations
The recent commit 81d2c6f819 ("kasan: support instrumented bitops
combined with generic bitops"), split the KASAN instrumented bitops
into separate headers for atomic, non-atomic and locking operations.

This was done to allow arches to include just the instrumented bitops
they need, while also using some of the generic bitops in
asm-generic/bitops (which are automatically instrumented). The generic
bitops are already split into atomic, non-atomic and locking headers.

This split required an update to kernel-api.rst because it included
include/asm-generic/bitops-instrumented.h, which no longer exists. So
now kernel-api.rst includes all three instrumented headers to get the
definitions for all the bitops.

When adding the three headers it seemed sensible to add sub-headings
for each, ie. "Atomic", "Non-atomic" and "Locking".

The confusion is that test_bit() is (and always has been) in
non-atomic.h, but is documented elsewhere (atomic_bitops.txt) as being
atomic. So having it appear under the "Non-atomic" heading is possibly
confusing.

Probably test_bit() should move from bitops/non-atomic.h to atomic.h,
but that has flow on effects. For now just remove the newly added
sub-headings in the documentation, so we at least aren't adding to the
confusion about whether test_bit() is atomic or not.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-12-04 21:20:28 +11:00
Rafael J. Wysocki
b65d56305c Merge branches 'acpi-bus', 'acpi-button', 'acpi-sysfs' and 'acpi-misc'
* acpi-bus:
  ACPI: bus: Fix NULL pointer check in acpi_bus_get_private_data()

* acpi-button:
  ACPI: button: Add DMI quirk for Acer Switch 10 SW5-032 lid-switch

* acpi-sysfs:
  ACPI: sysfs: Change ACPI_MASKABLE_GPE_MAX to 0x100

* acpi-misc:
  ACPI: Fix Kconfig indentation
2019-12-04 10:24:33 +01:00
Rafael J. Wysocki
1e4230f56d Merge branches 'pm-sleep', 'pm-cpuidle', 'pm-cpufreq', 'pm-devfreq' and 'pm-avs'
* pm-sleep:
  ACPI: PM: s2idle: Rework ACPI events synchronization
  ACPI: EC: Rework flushing of pending work

* pm-cpuidle:
  cpuidle: minor Kconfig help text fixes
  cpuidle: Drop disabled field from struct cpuidle_state
  cpuidle: Fix Kconfig indentation

* pm-cpufreq:
  cpufreq: Fix Kconfig indentation

* pm-devfreq:
  PM / devfreq: Add missing locking while setting suspend_freq

* pm-avs:
  power: avs: Fix Kconfig indentation
2019-12-04 10:20:17 +01:00
Ingo Molnar
9f58c93efd perf/core improvements and fixes:
perf report/top:
 
   - Fix segfault due to missing initialization of recently introduced
     struct map_symbol 'maps' field in append_inlines(), when running
     with DWARF callchains.
 
 perf stat:
 
   Andi Kleen:
 
   - Affinity based optimizations for sessions with many events in
     machines with large core counts, avoiding excessive number of IPIs.
 
 libtraceevent:
 
   - Sudip Mukherjee:
 
   - Fix installation with O=.
 
   - Copy pkg-config file to output folder when using O=.
 
 perf bench:
 
   Arnaldo Carvalho de Melo:
 
   - Update the copies of x86's mem{cpy,set}_64.S, and because that
     now uses new stuff in linux/linkage.h, update that header too, which
     made the minimal clang version to build perf to be 3.5, as
     3.4 as found in some of the container images used to test build perf
     can't grok STT_FUNC as a token in .type lines.
 
 ABI headers:
 
   Arnaldo Carvalho de Melo:
 
   - Sync x86's msr-index.h copy with the kernel sources, resulting
     in new MSRs to be usable in filter expressions in 'perf trace',
     such as IA32_TSX_CTRL.
 
   - Sync linux/fscrypt.h, linux/stat.h, sched.h and the kvm headers.
 
 perf trace:
 
   Arnaldo Carvalho de Melo:
 
   - Add CLEAR_SIGHAND support for clone's flags arg
 
 perf kvm:
 
   Arnaldo Carvalho de Melo:
 
   - Clarify the 'perf kvm' -i and -o command line options
 
 perf test:
 
   Ian Rogers:
 
   - Move test functionality in to a 'perf test' entry.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo-5.5-20191203' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

perf report/top:

  - Fix segfault due to missing initialization of recently introduced
    struct map_symbol 'maps' field in append_inlines(), when running
    with DWARF callchains.

perf stat:

  Andi Kleen:

  - Affinity based optimizations for sessions with many events in
    machines with large core counts, avoiding excessive number of IPIs.

libtraceevent:

  - Sudip Mukherjee:

  - Fix installation with O=.

  - Copy pkg-config file to output folder when using O=.

perf bench:

  Arnaldo Carvalho de Melo:

  - Update the copies of x86's mem{cpy,set}_64.S, and because that
    now uses new stuff in linux/linkage.h, update that header too, which
    made the minimal clang version to build perf to be 3.5, as
    3.4 as found in some of the container images used to test build perf
    can't grok STT_FUNC as a token in .type lines.

ABI headers:

  Arnaldo Carvalho de Melo:

  - Sync x86's msr-index.h copy with the kernel sources, resulting
    in new MSRs to be usable in filter expressions in 'perf trace',
    such as IA32_TSX_CTRL.

  - Sync linux/fscrypt.h, linux/stat.h, sched.h and the kvm headers.

perf trace:

  Arnaldo Carvalho de Melo:

  - Add CLEAR_SIGHAND support for clone's flags arg

perf kvm:

  Arnaldo Carvalho de Melo:

  - Clarify the 'perf kvm' -i and -o command line options

perf test:

  Ian Rogers:

  - Move test functionality in to a 'perf test' entry.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-12-04 08:49:52 +01:00
Corentin Labbe
4673402ebf ia64: agp: Replace empty define with do while
It's dangerous to use empty code define.
Furthermore it lead to the following warning:
drivers/char/agp/generic.c: In function « agp_generic_destroy_page »:
drivers/char/agp/generic.c:1266:28: attention : suggest braces around empty body in an « if » statement [-Wempty-body]

So let's replace emptyness by "do {} while(0)"

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1574324085-4338-6-git-send-email-clabbe@baylibre.com
2019-12-04 13:36:16 +10:00
Corentin Labbe
5f448266ce agp: Add bridge parameter documentation
This patch add documentation about the bridge parameter in several
function.

This will fix the following build warning:
drivers/char/agp/generic.c:220: warning: No description found for parameter 'bridge'
drivers/char/agp/generic.c:364: warning: No description found for parameter 'bridge'
drivers/char/agp/generic.c:1283: warning: No description found for parameter 'bridge'

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1574324085-4338-5-git-send-email-clabbe@baylibre.com
2019-12-04 13:35:59 +10:00
Corentin Labbe
5f1b24a644 agp: remove unused variable num_segments
This patch fix the following build warning:
warning: variable 'num_segments' set but not used [-Wunused-but-set-variable]

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1574324085-4338-4-git-send-email-clabbe@baylibre.com
2019-12-04 13:35:33 +10:00
Corentin Labbe
0f109f0e9a agp: move AGPGART_MINOR to include/linux/miscdevice.h
This patch move the define for AGPGART_MINOR to include/linux/miscdevice.h.
It is better that all minor number definitions are in the same place.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1574324085-4338-3-git-send-email-clabbe@baylibre.com
2019-12-04 13:32:45 +10:00
Corentin Labbe
9fc785f17d agp: remove unused variable size in agp_generic_create_gatt_table
This patch fix the following warning:
drivers/char/agp/generic.c:853:6: attention : variable ‘size’ set but not used [-Wunused-but-set-variable]
by removing the unused variable size in agp_generic_create_gatt_table

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1574324085-4338-2-git-send-email-clabbe@baylibre.com
2019-12-04 13:31:57 +10:00
Dave Airlie
909a606526 Merge tag 'drm-next-5.5-2019-12-03' of git://people.freedesktop.org/~agd5f/linux into drm-next
drm-next-5.5-2019-12-03:

amdgpu:
- Fix vram lost handling with BACO on VI/CI asics
- DC fixes for Navi14
- Misc gfx10 fixes
- SR-IOV fixes
- Fix driver unload
- Fix XGMI limits on Arcturus

amdkfd:
- Enable KFD on PPC
- Optimize KFD page table reservations

radeon:
- Fix register checker for r1xx/r2xx

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203204135.5437-1-alexander.deucher@amd.com
2019-12-04 10:13:16 +10:00
Brian Foster
798a9cada4 xfs: fix mount failure crash on invalid iclog memory access
syzbot (via KASAN) reports a use-after-free in the error path of
xlog_alloc_log(). Specifically, the iclog freeing loop doesn't
handle the case of a fully initialized ->l_iclog linked list.
Instead, it assumes that the list is partially constructed and NULL
terminated.

This bug manifested because there was no possible error scenario
after iclog list setup when the original code was added.  Subsequent
code and associated error conditions were added some time later,
while the original error handling code was never updated. Fix up the
error loop to terminate either on a NULL iclog or reaching the end
of the list.

Reported-by: syzbot+c732f8644185de340492@syzkaller.appspotmail.com
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-12-03 14:53:07 -08:00
Linus Torvalds
63de37476e chrome platform changes for v5.5
* CrOS EC / MFD / IIO
  - Contains tag-ib-chrome-mfd-iio-input-5.5, which is the first part of a
    series from Gwendal to refactor sensor code between MFD, CrOS EC, iio
    and input in order to add a new sensorhub driver and FIFO processing
 
 * Wilco EC:
  - Add support for Dell's USB PowerShare policy control, keyboard
    backlight LED driver, and a new test_event file.
  - Fixes use after free in wilco_ec's telemetry driver.
 
 * Misc:
  - bugfix in cros_usbpd_logger (missing destroy workqueue).
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Merge tag 'tag-chrome-platform-for-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux

Pull chrome platform changes from Benson Leung:
 "CrOS EC / MFD / IIO:

   - Contains tag-ib-chrome-mfd-iio-input-5.5, which is the first part
     of a series from Gwendal to refactor sensor code between MFD, CrOS
     EC, iio and input in order to add a new sensorhub driver and FIFO
     processing

  Wilco EC:

   - Add support for Dell's USB PowerShare policy control, keyboard
     backlight LED driver, and a new test_event file.

   - Fixes use after free in wilco_ec's telemetry driver.

  Misc:

   - bugfix in cros_usbpd_logger (missing destroy workqueue)"

* tag 'tag-chrome-platform-for-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
  platform/chrome: wilco_ec: fix use after free issue
  platform/chrome: cros_ec: Add Kconfig default for cros-ec-sensorhub
  Revert "Input: cros_ec_keyb: mask out extra flags in event_type"
  Revert "Input: cros_ec_keyb - add back missing mask for event_type"
  platform/chrome: cros_ec: handle MKBP more events flag
  platform/chrome: cros_ec: Do not attempt to register a non-positive IRQ number
  platform/chrome: cros-ec: Record event timestamp in the hard irq
  mfd / platform / iio: cros_ec: Register sensor through sensorhub
  iio / platform: cros_ec: Add cros-ec-sensorhub driver
  mfd / platform: cros_ec: Add sensor_count and make check_features public
  platform/chrome: cros_ec: Put docs with the code
  platform/chrome: cros_usbpd_logger: add missed destroy_workqueue in remove
  platform/chrome: cros_ec: Fix Kconfig indentation
  platform/chrome: wilco_ec: Add keyboard backlight LED support
  platform/chrome: wilco_ec: Add charging config driver
  platform/chrome: wilco_ec: Add Dell's USB PowerShare Policy control
  platform/chrome: wilco_ec: Add debugfs test_event file
2019-12-03 14:37:12 -08:00
Linus Torvalds
388c645a33 SPDX fix for 5.5-rc1
Here is a single SPDX fixup for 5.5-rc1
 
 It resolves an issue where we had missed a few .h files with the
 auto-tagging scripts because they had "GPL" text in strings within the
 file themselves.  This single patch fixes up the issue and provides the
 proper SPDX tags at the top of them as needed.
 
 This patch has been in linux-next for many many weeks now with no
 reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'spdx-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx

Pull SPDX fix from Greg KH:
 "Here is a single SPDX fixup for 5.5-rc1

  It resolves an issue where we had missed a few .h files with the
  auto-tagging scripts because they had "GPL" text in strings within the
  file themselves. This single patch fixes up the issue and provides the
  proper SPDX tags at the top of them as needed.

  This patch has been in linux-next for many many weeks now with no
  reported issues"

* tag 'spdx-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx:
  export,module: add SPDX GPL-2.0 license identifier to headers with no license
2019-12-03 14:20:21 -08:00
Linus Torvalds
537bd0a159 TTY/Serial patches for 5.5-rc1
Here is the "big" tty and serial driver patches for 5.5-rc1.  It's a bit
 later in the merge window than normal as I wanted to make sure some
 last-minute patches applied to it were all sane.  They seem to be :)
 
 There's a lot of little stuff in here, for the tty core, and for lots of
 serial drivers:
 	- reverts of uartlite serial driver patches that were wrong
 	- msm-serial driver fixes
 	- serial core updates and fixes
 	- tty core fixes
 	- serial driver dma mapping api changes
 	- lots of other tiny fixes and updates for serial drivers
 
 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 'tty-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial updates from Greg KH:
 "Here is the "big" tty and serial driver patches for 5.5-rc1.

  It's a bit later in the merge window than normal as I wanted to make
  sure some last-minute patches applied to it were all sane. They seem
  to be :)

  There's a lot of little stuff in here, for the tty core, and for lots
  of serial drivers:

   - reverts of uartlite serial driver patches that were wrong

   - msm-serial driver fixes

   - serial core updates and fixes

   - tty core fixes

   - serial driver dma mapping api changes

   - lots of other tiny fixes and updates for serial drivers

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

* tag 'tty-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (58 commits)
  Revert "serial/8250: Add support for NI-Serial PXI/PXIe+485 devices"
  vcs: prevent write access to vcsu devices
  tty: vt: keyboard: reject invalid keycodes
  tty: don't crash in tty_init_dev when missing tty_port
  serial: stm32: fix clearing interrupt error flags
  tty: Fix Kconfig indentation, continued
  serial: serial_core: Perform NULL checks for break_ctl ops
  tty: remove unused argument from tty_open_by_driver()
  tty: Fix Kconfig indentation
  {tty: serial, nand: onenand}: samsung: rename to fix build warning
  serial: ifx6x60: add missed pm_runtime_disable
  serial: pl011: Fix DMA ->flush_buffer()
  Revert "serial-uartlite: Move the uart register"
  Revert "serial-uartlite: Add get serial id if not provided"
  Revert "serial-uartlite: Do not use static struct uart_driver out of probe()"
  Revert "serial-uartlite: Add runtime support"
  Revert "serial-uartlite: Change logic how console_port is setup"
  Revert "serial-uartlite: Use allocated structure instead of static ones"
  tty: serial: msm_serial: Use dma_request_chan() directly for channel request
  tty: serial: tegra: Use dma_request_chan() directly for channel request
  ...
2019-12-03 14:09:14 -08:00
Linus Torvalds
c3bed3b20e pci-v5.5-changes
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Merge tag 'pci-v5.5-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "Enumeration:

   - Warn if a host bridge has no NUMA info (Yunsheng Lin)

   - Add PCI_STD_NUM_BARS for the number of standard BARs (Denis
     Efremov)

  Resource management:

   - Fix boot-time Embedded Controller GPE storm caused by incorrect
     resource assignment after ACPI Bus Check Notification (Mika
     Westerberg)

   - Protect pci_reassign_bridge_resources() against concurrent
     addition/removal (Benjamin Herrenschmidt)

   - Fix bridge dma_ranges resource list cleanup (Rob Herring)

   - Add "pci=hpmmiosize" and "pci=hpmmioprefsize" parameters to control
     the MMIO and prefetchable MMIO window sizes of hotplug bridges
     independently (Nicholas Johnson)

   - Fix MMIO/MMIO_PREF window assignment that assigned more space than
     desired (Nicholas Johnson)

   - Only enforce bus numbers from bridge EA if the bridge has EA
     devices downstream (Subbaraya Sundeep)

   - Consolidate DT "dma-ranges" parsing and convert all host drivers to
     use shared parsing (Rob Herring)

  Error reporting:

   - Restore AER capability after resume (Mayurkumar Patel)

   - Add PoisonTLPBlocked AER counter (Rajat Jain)

   - Use for_each_set_bit() to simplify AER code (Andy Shevchenko)

   - Fix AER kernel-doc (Andy Shevchenko)

   - Add "pcie_ports=dpc-native" parameter to allow native use of DPC
     even if platform didn't grant control over AER (Olof Johansson)

  Hotplug:

   - Avoid returning prematurely from sysfs requests to enable or
     disable a PCIe hotplug slot (Lukas Wunner)

   - Don't disable interrupts twice when suspending hotplug ports (Mika
     Westerberg)

   - Fix deadlocks when PCIe ports are hot-removed while suspended (Mika
     Westerberg)

  Power management:

   - Remove unnecessary ASPM locking (Bjorn Helgaas)

   - Add support for disabling L1 PM Substates (Heiner Kallweit)

   - Allow re-enabling Clock PM after it has been disabled (Heiner
     Kallweit)

   - Add sysfs attributes for controlling ASPM link states (Heiner
     Kallweit)

   - Remove CONFIG_PCIEASPM_DEBUG, including "link_state" and "clk_ctl"
     sysfs files (Heiner Kallweit)

   - Avoid AMD FCH XHCI USB PME# from D0 defect that prevents wakeup on
     USB 2.0 or 1.1 connect events (Kai-Heng Feng)

   - Move power state check out of pci_msi_supported() (Bjorn Helgaas)

   - Fix incorrect MSI-X masking on resume and revert related nvme quirk
     for Kingston NVME SSD running FW E8FK11.T (Jian-Hong Pan)

   - Always return devices to D0 when thawing to fix hibernation with
     drivers like mlx4 that used legacy power management (previously we
     only did it for drivers with new power management ops) (Dexuan Cui)

   - Clear PCIe PME Status even for legacy power management (Bjorn
     Helgaas)

   - Fix PCI PM documentation errors (Bjorn Helgaas)

   - Use dev_printk() for more power management messages (Bjorn Helgaas)

   - Apply D2 delay as milliseconds, not microseconds (Bjorn Helgaas)

   - Convert xen-platform from legacy to generic power management (Bjorn
     Helgaas)

   - Removed unused .resume_early() and .suspend_late() legacy power
     management hooks (Bjorn Helgaas)

   - Rearrange power management code for clarity (Rafael J. Wysocki)

   - Decode power states more clearly ("4" or "D4" really refers to
     "D3cold") (Bjorn Helgaas)

   - Notice when reading PM Control register returns an error (~0)
     instead of interpreting it as being in D3hot (Bjorn Helgaas)

   - Add missing link delays required by the PCIe spec (Mika Westerberg)

  Virtualization:

   - Move pci_prg_resp_pasid_required() to CONFIG_PCI_PRI (Bjorn
     Helgaas)

   - Allow VFs to use PRI (the PF PRI is shared by the VFs, but the code
     previously didn't recognize that) (Kuppuswamy Sathyanarayanan)

   - Allow VFs to use PASID (the PF PASID capability is shared by the
     VFs, but the code previously didn't recognize that) (Kuppuswamy
     Sathyanarayanan)

   - Disconnect PF and VF ATS enablement, since ATS in PFs and
     associated VFs can be enabled independently (Kuppuswamy
     Sathyanarayanan)

   - Cache PRI and PASID capability offsets (Kuppuswamy Sathyanarayanan)

   - Cache the PRI PRG Response PASID Required bit (Bjorn Helgaas)

   - Consolidate ATS declarations in linux/pci-ats.h (Krzysztof
     Wilczynski)

   - Remove unused PRI and PASID stubs (Bjorn Helgaas)

   - Removed unnecessary EXPORT_SYMBOL_GPL() from ATS, PRI, and PASID
     interfaces that are only used by built-in IOMMU drivers (Bjorn
     Helgaas)

   - Hide PRI and PASID state restoration functions used only inside the
     PCI core (Bjorn Helgaas)

   - Add a DMA alias quirk for the Intel VCA NTB (Slawomir Pawlowski)

   - Serialize sysfs sriov_numvfs reads vs writes (Pierre Crégut)

   - Update Cavium ACS quirk for ThunderX2 and ThunderX3 (George
     Cherian)

   - Fix the UPDCR register address in the Intel ACS quirk (Steffen
     Liebergeld)

   - Unify ACS quirk implementations (Bjorn Helgaas)

  Amlogic Meson host bridge driver:

   - Fix meson PERST# GPIO polarity problem (Remi Pommarel)

   - Add DT bindings for Amlogic Meson G12A (Neil Armstrong)

   - Fix meson clock names to match DT bindings (Neil Armstrong)

   - Add meson support for Amlogic G12A SoC with separate shared PHY
     (Neil Armstrong)

   - Add meson extended PCIe PHY functions for Amlogic G12A USB3+PCIe
     combo PHY (Neil Armstrong)

   - Add arm64 DT for Amlogic G12A PCIe controller node (Neil Armstrong)

   - Add commented-out description of VIM3 USB3/PCIe mux in arm64 DT
     (Neil Armstrong)

  Broadcom iProc host bridge driver:

   - Invalidate iProc PAXB address mapping before programming it
     (Abhishek Shah)

   - Fix iproc-msi and mvebu __iomem annotations (Ben Dooks)

  Cadence host bridge driver:

   - Refactor Cadence PCIe host controller to use as a library for both
     host and endpoint (Tom Joseph)

  Freescale Layerscape host bridge driver:

   - Add layerscape LS1028a support (Xiaowei Bao)

  Intel VMD host bridge driver:

   - Add VMD bus 224-255 restriction decode (Jon Derrick)

   - Add VMD 8086:9A0B device ID (Jon Derrick)

   - Remove Keith from VMD maintainer list (Keith Busch)

  Marvell ARMADA 3700 / Aardvark host bridge driver:

   - Use LTSSM state to build link training flag since Aardvark doesn't
     implement the Link Training bit (Remi Pommarel)

   - Delay before training Aardvark link in case PERST# was asserted
     before the driver probe (Remi Pommarel)

   - Fix Aardvark issues with Root Control reads and writes (Remi
     Pommarel)

   - Don't rely on jiffies in Aardvark config access path since
     interrupts may be disabled (Remi Pommarel)

   - Fix Aardvark big-endian support (Grzegorz Jaszczyk)

  Marvell ARMADA 370 / XP host bridge driver:

   - Make mvebu_pci_bridge_emul_ops static (Ben Dooks)

  Microsoft Hyper-V host bridge driver:

   - Add hibernation support for Hyper-V virtual PCI devices (Dexuan
     Cui)

   - Track Hyper-V pci_protocol_version per-hbus, not globally (Dexuan
     Cui)

   - Avoid kmemleak false positive on hv hbus buffer (Dexuan Cui)

  Mobiveil host bridge driver:

   - Change mobiveil csr_read()/write() function names that conflict
     with riscv arch functions (Kefeng Wang)

  NVIDIA Tegra host bridge driver:

   - Fix Tegra CLKREQ dependency programming (Vidya Sagar)

  Renesas R-Car host bridge driver:

   - Remove unnecessary header include from rcar (Andrew Murray)

   - Tighten register index checking for rcar inbound range programming
     (Marek Vasut)

   - Fix rcar inbound range alignment calculation to improve packing of
     multiple entries (Marek Vasut)

   - Update rcar MACCTLR setting to match documentation (Yoshihiro
     Shimoda)

   - Clear bit 0 of MACCTLR before PCIETCTLR.CFINIT per manual
     (Yoshihiro Shimoda)

   - Add Marek Vasut and Yoshihiro Shimoda as R-Car maintainers (Simon
     Horman)

  Rockchip host bridge driver:

   - Make rockchip 0V9 and 1V8 power regulators non-optional (Robin
     Murphy)

  Socionext UniPhier host bridge driver:

   - Set uniphier to host (RC) mode always (Kunihiko Hayashi)

  Endpoint drivers:

   - Fix endpoint driver sign extension problem when shifting page
     number to phys_addr_t (Alan Mikhak)

  Misc:

   - Add NumaChip SPDX header (Krzysztof Wilczynski)

   - Replace EXTRA_CFLAGS with ccflags-y (Krzysztof Wilczynski)

   - Remove unused includes (Krzysztof Wilczynski)

   - Removed unused sysfs attribute groups (Ben Dooks)

   - Remove PTM and ASPM dependencies on PCIEPORTBUS (Bjorn Helgaas)

   - Add PCIe Link Control 2 register field definitions to replace magic
     numbers in AMDGPU and Radeon CIK/SI (Bjorn Helgaas)

   - Fix incorrect Link Control 2 Transmit Margin usage in AMDGPU and
     Radeon CIK/SI PCIe Gen3 link training (Bjorn Helgaas)

   - Use pcie_capability_read_word() instead of pci_read_config_word()
     in AMDGPU and Radeon CIK/SI (Frederick Lawler)

   - Remove unused pci_irq_get_node() Greg Kroah-Hartman)

   - Make asm/msi.h mandatory and simplify PCI_MSI_IRQ_DOMAIN Kconfig
     (Palmer Dabbelt, Michal Simek)

   - Read all 64 bits of Switchtec part_event_bitmap (Logan Gunthorpe)

   - Fix erroneous intel-iommu dependency on CONFIG_AMD_IOMMU (Bjorn
     Helgaas)

   - Fix bridge emulation big-endian support (Grzegorz Jaszczyk)

   - Fix dwc find_next_bit() usage (Niklas Cassel)

   - Fix pcitest.c fd leak (Hewenliang)

   - Fix typos and comments (Bjorn Helgaas)

   - Fix Kconfig whitespace errors (Krzysztof Kozlowski)"

* tag 'pci-v5.5-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (160 commits)
  PCI: Remove PCI_MSI_IRQ_DOMAIN architecture whitelist
  asm-generic: Make msi.h a mandatory include/asm header
  Revert "nvme: Add quirk for Kingston NVME SSD running FW E8FK11.T"
  PCI/MSI: Fix incorrect MSI-X masking on resume
  PCI/MSI: Move power state check out of pci_msi_supported()
  PCI/MSI: Remove unused pci_irq_get_node()
  PCI: hv: Avoid a kmemleak false positive caused by the hbus buffer
  PCI: hv: Change pci_protocol_version to per-hbus
  PCI: hv: Add hibernation support
  PCI: hv: Reorganize the code in preparation of hibernation
  MAINTAINERS: Remove Keith from VMD maintainer
  PCI/ASPM: Remove PCIEASPM_DEBUG Kconfig option and related code
  PCI/ASPM: Add sysfs attributes for controlling ASPM link states
  PCI: Fix indentation
  drm/radeon: Prefer pcie_capability_read_word()
  drm/radeon: Replace numbers with PCI_EXP_LNKCTL2 definitions
  drm/radeon: Correct Transmit Margin masks
  drm/amdgpu: Prefer pcie_capability_read_word()
  PCI: uniphier: Set mode register to host mode
  drm/amdgpu: Replace numbers with PCI_EXP_LNKCTL2 definitions
  ...
2019-12-03 13:58:22 -08:00