Commit Graph

998394 Commits

Author SHA1 Message Date
Al Viro
8d76722355 cifs: don't cargo-cult strndup()
strndup(s, strlen(s)) is a highly unidiomatic way to spell strdup(s);
it's *NOT* safer in any way, since strlen() is just as sensitive to
NUL-termination as strdup() is.

strndup() is for situations when you need a copy of a known-sized
substring, not a magic security juju to drive the bad spirits away.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-25 16:28:23 -05:00
Steve French
b9335f6210 SMB3: update structures for new compression protocol definitions
Protocol has been extended for additional compression headers.
See MS-SMB2 section 2.2.42

Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-25 16:28:23 -05:00
Aurelien Aptel
ec4e4862a9 cifs: remove old dead code
While reviewing a patch clarifying locks and locking hierarchy I
realized some locks were unused.

This commit removes old data and code that isn't actually used
anywhere, or hidden in ifdefs which cannot be enabled from the kernel
config.

* The uid/gid trees and associated locks are left-overs from when
  uid/sid mapping had an extra caching layer on top of the keyring and
  are now unused.
  See commit faa65f07d2 ("cifs: simplify id_to_sid and sid_to_id mapping code")
  from 2012.

* cifs_oplock_break_ops is a left-over from when slow_work was remplaced
  by regular workqueue and is now unused.
  See commit 9b64697246 ("cifs: use workqueue instead of slow-work")
  from 2010.

* CIFSSMBSetAttrLegacy is SMB1 cruft dealing with some legacy
  NT4/Win9x behaviour.

* Remove CONFIG_CIFS_DNOTIFY_EXPERIMENTAL left-overs. This was already
  partially removed in 392e1c5dc9 ("cifs: rename and clarify CIFS_ASYNC_OP and CIFS_NO_RESP")
  from 2019. Kill it completely.

* Another candidate that was considered but spared is
  CONFIG_CIFS_NFSD_EXPORT which has an empty implementation and cannot
  be enabled by a config option (although it is listed but disabled with
  "BROKEN" as a dep). It's unclear whether this could even function
  today in its current form but it has it's own .c file and Kconfig
  entry which is a bit more involved to remove and might make a come
  back?

Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-25 16:28:22 -05:00
Gustavo A. R. Silva
9f4c6eed26 cifs: cifspdu.h: Replace one-element array with flexible-array member
There is a regular need in the kernel to provide a way to declare having
a dynamically sized set of trailing elements in a structure. Kernel code
should always use “flexible array members”[1] for these cases. The older
style of one-element or zero-length arrays should no longer be used[2].

Also, this helps with the ongoing efforts to enable -Warray-bounds by
fixing the following warning:

  CC [M]  fs/cifs/cifssmb.o
fs/cifs/cifssmb.c: In function ‘CIFSFindNext’:
fs/cifs/cifssmb.c:4636:23: warning: array subscript 1 is above array bounds of ‘char[1]’ [-Warray-bounds]
 4636 |   pSMB->ResumeFileName[name_len+1] = 0;
      |   ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.10/process/deprecated.html#zero-length-and-one-element-arrays

Link: https://github.com/KSPP/linux/issues/79
Link: https://github.com/KSPP/linux/issues/109
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-25 16:28:22 -05:00
Wan Jiabing
5e14c7240a fs: cifs: Remove repeated struct declaration
struct cifs_writedata is declared twice.
One is declared at 209th line.
And struct cifs_writedata is defined blew.
The declaration hear is not needed. Remove the duplicate.

Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-25 16:28:22 -05:00
Aurelien Aptel
443dd65d48 Documentation/admin-guide/cifs: document open_files and dfscache
Add missing documentation for open_files and dfscache /proc files.

Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-25 16:28:22 -05:00
Aurelien Aptel
b7fd0fa0ea cifs: simplify SWN code with dummy funcs instead of ifdefs
This commit doesn't change the logic of SWN.

Add dummy implementation of SWN functions when SWN is disabled instead
of using ifdef sections.

The dummy functions get optimized out, this leads to clearer code and
compile time type-checking regardless of config options with no
runtime penalty.

Leave the simple ifdefs section as-is.

A single bitfield (bool foo:1) on its own will use up one int. Move
tcon->use_witness out of ifdefs with the other tcon bitfields.

Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Samuel Cabrero <scabrero@suse.de>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-25 16:28:22 -05:00
Steve French
bb9cad1b49 smb3: update protocol header definitions based to include new flags
[MS-SMB2] protocol specification was recently updated to include
new flags, new negotiate context and some minor changes to fields.
Update smb2pdu.h structure definitions to match the newest version
of the protocol specification.  Updates to the compression context
values will be in a followon patch.

Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-25 16:28:22 -05:00
Steve French
edc9dd1e3c cifs: correct comments explaining internal semaphore usage in the module
A few of the semaphores had been removed, and one additional one
needed to be noted in the comments.

Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-25 16:28:22 -05:00
Jiapeng Chong
83cd9ed7ae cifs: Remove useless variable
Fix the following gcc warning:

fs/cifs/cifsacl.c:1097:8: warning: variable ‘nmode’ set but not used
[-Wunused-but-set-variable].

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-25 16:28:22 -05:00
jack1.li_cp
c45adff786 cifs: Fix spelling of 'security'
secuirty -> security

Signed-off-by: jack1.li_cp <liliu1@yulong.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-25 16:28:22 -05:00
Linus Torvalds
9f4ad9e425 Linux 5.12 2021-04-25 13:49:08 -07:00
Linus Torvalds
d2d09fbe33 perf tools fixes for v5.12: 4th batch
- Fix potential NULL pointer dereference in the auxtrace option parser.
 
 - Fix access to PID in an array when setting a PID filter in 'perf ftrace'.
 
 - Fix error return code in the 'perf data' tool and in maps__clone(),
   found using a static analysis tool from Huawei.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-fixes-for-v5.12-2021-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix potential NULL pointer dereference in the auxtrace option parser

 - Fix access to PID in an array when setting a PID filter in 'perf ftrace'

 - Fix error return code in the 'perf data' tool and in maps__clone(),
   found using a static analysis tool from Huawei

* tag 'perf-tools-fixes-for-v5.12-2021-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf map: Fix error return code in maps__clone()
  perf ftrace: Fix access to pid in array when setting a pid filter
  perf auxtrace: Fix potential NULL pointer dereference
  perf data: Fix error return code in perf_data__create_dir()
2021-04-25 09:48:46 -07:00
Linus Torvalds
24dfc39007 - Fix BDW Xeon's stepping in the PEBS isolation table of CPUs
- Fix a panic when initializing perf uncore machinery on HSW and BDW servers
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Merge tag 'perf_urgent_for_v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 perf fixes from Borislav Petkov:

 - Fix Broadwell Xeon's stepping in the PEBS isolation table of CPUs

 - Fix a panic when initializing perf uncore machinery on Haswell and
   Broadwell servers

* tag 'perf_urgent_for_v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/kvm: Fix Broadwell Xeon stepping in isolation_ucodes[]
  perf/x86/intel/uncore: Remove uncore extra PCI dev HSWEP_PCI_PCU_3
2021-04-25 09:42:06 -07:00
Linus Torvalds
0146da0d4c - Fix ordering in the queued writer lock's slowpath.
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Merge tag 'locking_urgent_for_v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking fix from Borislav Petkov:
 "Fix ordering in the queued writer lock's slowpath"

* tag 'locking_urgent_for_v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/qrwlock: Fix ordering in queued_write_lock_slowpath()
2021-04-25 09:10:10 -07:00
Linus Torvalds
682b26bd80 - Fix a typo in a macro ifdeffery.
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Merge tag 'sched_urgent_for_v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fix from Borislav Petkov:
 "Fix a typo in a macro ifdeffery"

* tag 'sched_urgent_for_v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  preempt/dynamic: Fix typo in macro conditional statement
2021-04-25 09:08:19 -07:00
Linus Torvalds
11fac7a004 - Fix an out-of-bounds memory access when setting up a crash kernel with kexec.
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Merge tag 'x86_urgent_for_v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fix from Borislav Petkov:
 "Fix an out-of-bounds memory access when setting up a crash kernel with
  kexec"

* tag 'x86_urgent_for_v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/crash: Fix crash_setup_memmap_entries() out-of-bounds access
2021-04-25 09:02:13 -07:00
Linus Torvalds
2a1d7946fa SRCU bug introduced in the merge window
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fix from Paolo Bonzini:
 "Fix SRCU bug introduced in the merge window"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86/xen: Take srcu lock when accessing kvm_memslots()
2021-04-24 09:40:18 -07:00
Linus Torvalds
799bac5512 Revert "net/rds: Avoid potential use after free in rds_send_remove_from_sock"
This reverts commit 0c85a7e874.

The games with 'rm' are on (two separate instances) of a local variable,
and make no difference.

Quoting Aditya Pakki:
 "I was the author of the patch and it was the cause of the giant UMN
  revert.

  The patch is garbage and I was unaware of the steps involved in
  retracting it. I *believed* the maintainers would pull it, given it
  was already under Greg's list. The patch does not introduce any bugs
  but is pointless and is stupid. I accept my incompetence and for not
  requesting a revert earlier."

Link: https://lwn.net/Articles/854319/
Requested-by: Aditya Pakki <pakki001@umn.edu>
Cc: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-24 09:32:35 -07:00
Linus Torvalds
8db5efb83f Late pin control fixes for v5.12:
- Fix the number of pins in the community of the Intel
   Lewisburg SoC.
 
 - Show pin numbers for controllers with base = 0 in the
   new debugfs feature.
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Merge tag 'pinctrl-v5.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
 "Late pin control fixes, would have been in the main pull request
  normally but hey I got lucky and we got another week to polish up
  v5.12 so here we go.

  One driver fix and one making the core debugfs work:

   - Fix the number of pins in the community of the Intel Lewisburg SoC

   - Show pin numbers for controllers with base = 0 in the new debugfs
     feature"

* tag 'pinctrl-v5.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: core: Show pin numbers for the controllers with base = 0
  pinctrl: lewisburg: Update number of pins in community
2021-04-23 17:11:10 -07:00
Linus Torvalds
e77a830c82 Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
 "5 patches.

  Subsystems affected by this patch series: coda, overlayfs, and
  mm (pagecache and memcg)"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  tools/cgroup/slabinfo.py: updated to work on current kernel
  mm/filemap: fix mapping_seek_hole_data on THP & 32-bit
  mm/filemap: fix find_lock_entries hang on 32-bit THP
  ovl: fix reference counting in ovl_mmap error path
  coda: fix reference counting in coda_file_mmap error path
2021-04-23 14:56:23 -07:00
Linus Torvalds
95838bd9fc block-5.12-2021-04-23
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Merge tag 'block-5.12-2021-04-23' of git://git.kernel.dk/linux-block

Pull block fix from Jens Axboe:
 "A single fix for a behavioral regression in this series, when
  re-reading the partition table with partitions open"

* tag 'block-5.12-2021-04-23' of git://git.kernel.dk/linux-block:
  block: return -EBUSY when there are open partitions in blkdev_reread_part
2021-04-23 14:46:20 -07:00
Vasily Averin
1974c45dd7 tools/cgroup/slabinfo.py: updated to work on current kernel
slabinfo.py script does not work with actual kernel version.

First, it was unable to recognise SLUB susbsytem, and when I specified
it manually it failed again with

  AttributeError: 'struct page' has no member 'obj_cgroups'

.. and then again with

  File "tools/cgroup/memcg_slabinfo.py", line 221, in main
    memcg.kmem_caches.address_of_(),
  AttributeError: 'struct mem_cgroup' has no member 'kmem_caches'

Link: https://lkml.kernel.org/r/cec1a75e-43b4-3d64-2084-d9f98fda037f@virtuozzo.com
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Tested-by: Roman Gushchin <guro@fb.com>
Acked-by: Roman Gushchin <guro@fb.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-23 14:42:40 -07:00
Hugh Dickins
ed98b0159f mm/filemap: fix mapping_seek_hole_data on THP & 32-bit
No problem on 64-bit, or without huge pages, but xfstests generic/285
and other SEEK_HOLE/SEEK_DATA tests have regressed on huge tmpfs, and on
32-bit architectures, with the new mapping_seek_hole_data().  Several
different bugs turned out to need fixing.

u64 cast to stop losing bits when converting unsigned long to loff_t
(and let's use shifts throughout, rather than mixed with * and /).

Use round_up() when advancing pos, to stop assuming that pos was already
THP-aligned when advancing it by THP-size.  (This use of round_up()
assumes that any THP has THP-aligned index: true at present and true
going forward, but could be recoded to avoid the assumption.)

Use xas_set() when iterating away from a THP, so that xa_index stays in
synch with start, instead of drifting away to return bogus offset.

Check start against end to avoid wrapping 32-bit xa_index to 0 (and to
handle these additional cases, seek_data or not, it's easier to break
the loop than goto: so rearrange exit from the function).

[hughd@google.com: remove unneeded u64 casts, per Matthew]
  Link: https://lkml.kernel.org/r/alpine.LSU.2.11.2104221347240.1170@eggly.anvils

Link: https://lkml.kernel.org/r/alpine.LSU.2.11.2104211737410.3299@eggly.anvils
Fixes: 41139aa4c3 ("mm/filemap: add mapping_seek_hole_data")
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-23 14:42:39 -07:00
Hugh Dickins
2d11e73815 mm/filemap: fix find_lock_entries hang on 32-bit THP
No problem on 64-bit, or without huge pages, but xfstests generic/308
hung uninterruptibly on 32-bit huge tmpfs.

Since commit 0cc3b0ec23 ("Clarify (and fix) in 4.13 MAX_LFS_FILESIZE
macros"), MAX_LFS_FILESIZE is only a PAGE_SIZE away from wrapping 32-bit
xa_index to 0, so the new find_lock_entries() has to be extra careful
when handling a THP.

Link: https://lkml.kernel.org/r/alpine.LSU.2.11.2104211735430.3299@eggly.anvils
Fixes: 5c211ba29d ("mm: add and use find_lock_entries")
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jan Kara <jack@suse.cz>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-23 14:42:39 -07:00
Christian König
2896900e22 ovl: fix reference counting in ovl_mmap error path
mmap_region() now calls fput() on the vma->vm_file.

Fix this by using vma_set_file() so it doesn't need to be handled
manually here any more.

Link: https://lkml.kernel.org/r/20210421132012.82354-2-christian.koenig@amd.com
Fixes: 1527f926fd ("mm: mmap: fix fput in error path v2")
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: <stable@vger.kernel.org>	[5.11+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-23 14:42:39 -07:00
Christian König
9da29c7f77 coda: fix reference counting in coda_file_mmap error path
mmap_region() now calls fput() on the vma->vm_file.

So we need to drop the extra reference on the coda file instead of the
host file.

Link: https://lkml.kernel.org/r/20210421132012.82354-1-christian.koenig@amd.com
Fixes: 1527f926fd ("mm: mmap: fix fput in error path v2")
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: <stable@vger.kernel.org>	[5.11+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-23 14:42:39 -07:00
Wanpeng Li
9c1a07442c KVM: x86/xen: Take srcu lock when accessing kvm_memslots()
kvm_memslots() will be called by kvm_write_guest_offset_cached() so we should
take the srcu lock. Let's pull the srcu lock operation from kvm_steal_time_set_preempted()
again to fix xen part.

Fixes: 30b5c851af ("KVM: x86/xen: Add support for vCPU runstate information")
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Message-Id: <1619166200-9215-1-git-send-email-wanpengli@tencent.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-04-23 17:00:50 -04:00
Linus Torvalds
6d1d45cb98 ARM SoC fixes for v5.12, part 4
These should be the final fixes for v5.12. There is one fix for SD card
 detection on one Allwinner board, and a few fixes for the Tegra
 platform that I had already queued up for v5.13 due to a communication
 problem. This addresses MMC device ordering on multiple machines,
 audio support on Jetson AGX Xavier and suspend/resume on Jetson TX2.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'arm-fixes-5.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "These should be the final fixes for v5.12.

  There is one fix for SD card detection on one Allwinner board, and a
  few fixes for the Tegra platform that I had already queued up for
  v5.13 due to a communication problem. This addresses MMC device
  ordering on multiple machines, audio support on Jetson AGX Xavier and
  suspend/resume on Jetson TX2"

* tag 'arm-fixes-5.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  arm64: dts: allwinner: Revert SD card CD GPIO for Pine64-LTS
  arm64: tegra: Move clocks from RT5658 endpoint to device node
  arm64: tegra: Fix mmc0 alias for Jetson Xavier NX
  arm64: tegra: Set fw_devlink=on for Jetson TX2
  arm64: tegra: Add unit-address for ACONNECT on Tegra186
2021-04-23 13:01:05 -07:00
Zhen Lei
c6f8714125 perf map: Fix error return code in maps__clone()
Although 'err' has been initialized to -ENOMEM, but it will be reassigned
by the "err = unwind__prepare_access(...)" statement in the for loop. So
that, the value of 'err' is unknown when map__clone() failed.

Fixes: 6c50258443 ("perf unwind: Call unwind__prepare_access for forked thread")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: zhen lei <thunder.leizhen@huawei.com>
Link: http://lore.kernel.org/lkml/20210415092744.3793-1-thunder.leizhen@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-04-23 16:03:09 -03:00
Thomas Richter
671b60cb6a perf ftrace: Fix access to pid in array when setting a pid filter
Command 'perf ftrace -v -- ls' fails in s390 (at least 5.12.0rc6).

The root cause is a missing pointer dereference which causes an
array element address to be used as PID.

Fix this by extracting the PID.

Output before:
  # ./perf ftrace -v -- ls
  function_graph tracer is used
  write '-263732416' to tracing/set_ftrace_pid failed: Invalid argument
  failed to set ftrace pid
  #

Output after:
   ./perf ftrace -v -- ls
   function_graph tracer is used
   # tracer: function_graph
   #
   # CPU  DURATION                  FUNCTION CALLS
   # |     |   |                     |   |   |   |
   4)               |  rcu_read_lock_sched_held() {
   4)   0.552 us    |    rcu_lockdep_current_cpu_online();
   4)   6.124 us    |  }

Reported-by: Alexander Schmidt <alexschm@de.ibm.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Link: http://lore.kernel.org/lkml/20210421120400.2126433-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-04-23 15:58:10 -03:00
Leo Yan
b14585d9f1 perf auxtrace: Fix potential NULL pointer dereference
In the function auxtrace_parse_snapshot_options(), the callback pointer
"itr->parse_snapshot_options" can be NULL if it has not been set during
the AUX record initialization.  This can cause tool crashing if the
callback pointer "itr->parse_snapshot_options" is dereferenced without
performing NULL check.

Add a NULL check for the pointer "itr->parse_snapshot_options" before
invoke the callback.

Fixes: d20031bb63 ("perf tools: Add AUX area tracing Snapshot Mode")
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Link: http://lore.kernel.org/lkml/20210420151554.2031768-1-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-04-23 15:34:32 -03:00
Linus Torvalds
5bfc75d92e drm fixes for 5.12 final
amdgpu:
 - Fix gpuvm page table update issue
 - Modifier fixes
 - Register fix for dimgrey cavefish
 
 i915:
 - GVT's BDW regression fix for cmd parser
 - Fix modesetting in case of unexpected AUX timeouts
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Merge tag 'drm-fixes-2021-04-23' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Just some small i915 and amdgpu fixes this week, should be all until
  you open the merge window.

  amdgpu:
   - Fix gpuvm page table update issue
   - Modifier fixes
   - Register fix for dimgrey cavefish

  i915:
   - GVT's BDW regression fix for cmd parser
   - Fix modesetting in case of unexpected AUX timeouts"

* tag 'drm-fixes-2021-04-23' of git://anongit.freedesktop.org/drm/drm:
  drm/amdgpu: fix GCR_GENERAL_CNTL offset for dimgrey_cavefish
  amd/display: allow non-linear multi-planar formats
  drm/amd/display: Update modifier list for gfx10_3
  drm/amdgpu: reserve fence slot to update page table
  drm/i915: Fix modesetting in case of unexpected AUX timeouts
  drm/i915/gvt: Fix BDW command parser regression
2021-04-23 10:23:57 -07:00
Linus Torvalds
22c4e5bcd3 gpio fixes for v5.12
- save and restore the sysconfig register in gpio-omap
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Merge tag 'gpio-fixes-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fix from Bartosz Golaszewski:
 "Save and restore the sysconfig register in gpio-omap to fix a
  power-management issue"

* tag 'gpio-fixes-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: omap: Save and restore sysconfig
2021-04-23 10:19:19 -07:00
Arnd Bergmann
a1768dad77 Merge branch 'tegra/dt64' into arm/fixes
arm64: tegra: Device tree fixes for v5.12-rc6

This contains a couple of device tree fixes for the v5.12 release cycle.
These are needed for proper audio support on Jetson AGX Xavier, to boot
the Jetson Xavier NX from an SD card and to be able to suspend/resume
the Jetson TX2.

* tegra/dt64:
  arm64: tegra: Move clocks from RT5658 endpoint to device node
  arm64: tegra: Fix mmc0 alias for Jetson Xavier NX
  arm64: tegra: Set fw_devlink=on for Jetson TX2
  arm64: tegra: Add unit-address for ACONNECT on Tegra186

Link: https://lore.kernel.org/linux-arm-kernel/YILD4yyPXuiYbHW1@orome.fritz.box/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-04-23 15:38:13 +02:00
Dave Airlie
aca38735ae - GVT's BDW regression fix for cmd parser (Zhenyu)
- Fix modesetting in case of unexpected AUX timeouts (Imre)
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Merge tag 'drm-intel-fixes-2021-04-22' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

- GVT's BDW regression fix for cmd parser (Zhenyu)
- Fix modesetting in case of unexpected AUX timeouts (Imre)

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YIGZ3pQPgPQtZtyI@intel.com
2021-04-23 12:18:21 +10:00
Dave Airlie
b4d1913df2 Merge tag 'amd-drm-fixes-5.12-2021-04-21' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-5.12-2021-04-21:

amdgpu:
- Fix gpuvm page table update issue
- Modifier fixes
- Register fix for dimgrey cavefish

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210421220456.3839-1-alexander.deucher@amd.com
2021-04-23 11:34:02 +10:00
Linus Torvalds
18a3c5f7ab virtio: last minute fixes
Very late in the cycle but both risky if left unfixed and more or less
 obvious..
 
 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 fixes from Michael Tsirkin:
 "Very late in the cycle but both risky if left unfixed and more or less
  obvious.."

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vdpa/mlx5: Set err = -ENOMEM in case dma_map_sg_attrs fails
  vhost-vdpa: protect concurrent access to vhost device iotlb
2021-04-22 16:28:18 -07:00
Eli Cohen
be286f84e3 vdpa/mlx5: Set err = -ENOMEM in case dma_map_sg_attrs fails
Set err = -ENOMEM if dma_map_sg_attrs() fails so the function reutrns
error.

Fixes: 94abbccdf2 ("vdpa/mlx5: Add shared memory registration code")
Signed-off-by: Eli Cohen <elic@nvidia.com>
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20210411083646.910546-1-elic@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
2021-04-22 18:15:31 -04:00
Xie Yongji
a9d064524f vhost-vdpa: protect concurrent access to vhost device iotlb
Protect vhost device iotlb by vhost_dev->mutex. Otherwise,
it might cause corruption of the list and interval tree in
struct vhost_iotlb if userspace sends the VHOST_IOTLB_MSG_V2
message concurrently.

Fixes: 4c8cf318("vhost: introduce vDPA-based backend")
Cc: stable@vger.kernel.org
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20210412095512.178-1-xieyongji@bytedance.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-04-22 18:15:31 -04:00
Arnd Bergmann
450225a402 One fix for the MMC card detect on the Pine H64 board
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Merge tag 'sunxi-fixes-for-5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into arm/fixes

One fix for the MMC card detect on the Pine H64 board

* tag 'sunxi-fixes-for-5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  arm64: dts: allwinner: Revert SD card CD GPIO for Pine64-LTS

Link: https://lore.kernel.org/r/45fc5e4d-ef48-4729-a869-79a8f288bb83.lettre@localhost
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-04-22 23:18:30 +02:00
Linus Torvalds
90c911ad74 KEYS: trusted tpmdd-fixes on 20210422
This is an urgent regression fix for a tpm patch set that went in this
 merge window. It looks like a rebase before the original pull request
 lost a tpm_try_get_ops() so we have a lock imbalance in our code which
 is causing oopses.  The original patch was correct on the mailing
 list.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/tpmdd

Pull tpm fix from James Bottomley:
 "This is an urgent regression fix for a tpm patch set that went in this
  merge window. It looks like a rebase before the original pull request
  lost a tpm_try_get_ops() so we have a lock imbalance in our code which
  is causing oopses. The original patch was correct on the mailing list.

  I'm sending this in agreement with Mimi (as joint maintainers of
  trusted keys) because Jarkko is off communing with the Reindeer or
  whatever it is Finns do when on holiday"

* tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/tpmdd:
  KEYS: trusted: Fix TPM reservation for seal/unseal
2021-04-22 13:51:46 -07:00
Jim Mattson
4b2f1e5922 perf/x86/kvm: Fix Broadwell Xeon stepping in isolation_ucodes[]
The only stepping of Broadwell Xeon parts is stepping 1. Fix the
relevant isolation_ucodes[] entry, which previously enumerated
stepping 2.

Although the original commit was characterized as an optimization, it
is also a workaround for a correctness issue.

If a PMI arrives between kvm's call to perf_guest_get_msrs() and the
subsequent VM-entry, a stale value for the IA32_PEBS_ENABLE MSR may be
restored at the next VM-exit. This is because, unbeknownst to kvm, PMI
throttling may clear bits in the IA32_PEBS_ENABLE MSR. CPUs with "PEBS
isolation" don't suffer from this issue, because perf_guest_get_msrs()
doesn't report the IA32_PEBS_ENABLE value.

Fixes: 9b545c04ab ("perf/x86/kvm: Avoid unnecessary work in guest filtering")
Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Peter Shier <pshier@google.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Link: https://lkml.kernel.org/r/20210422001834.1748319-1-jmattson@google.com
2021-04-22 14:36:01 +02:00
Andre Przywara
4d09ccc4a8
arm64: dts: allwinner: Revert SD card CD GPIO for Pine64-LTS
Commit 941432d007 ("arm64: dts: allwinner: Drop non-removable from
SoPine/LTS SD card") enabled the card detect GPIO for the SOPine module,
along the way with the Pine64-LTS, which share the same base .dtsi.

This was based on the observation that the Pine64-LTS has as "push-push"
SD card socket, and that the schematic mentions the card detect GPIO.

After having received two reports about failing SD card access with that
patch, some more research and polls on that subject revealed that there
are at least two different versions of the Pine64-LTS out there:
- On some boards (including mine) the card detect pin is "stuck" at
  high, regardless of an microSD card being inserted or not.
- On other boards the card-detect is working, but is active-high, by
  virtue of an explicit inverter circuit, as shown in the schematic.

To cover all versions of the board out there, and don't take any chances,
let's revert the introduction of the active-low CD GPIO, but let's use
the broken-cd property for the Pine64-LTS this time. That should avoid
regressions and should work for everyone, even allowing SD card changes
now.
The SOPine card detect has proven to be working, so let's keep that
GPIO in place.

Fixes: 941432d007 ("arm64: dts: allwinner: Drop non-removable from SoPine/LTS SD card")
Reported-by: Michael Weiser <michael.weiser@gmx.de>
Reported-by: Daniel Kulesz <kuleszdl@posteo.org>
Suggested-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Michael Weiser <michael.weiser@gmx.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20210414104740.31497-1-andre.przywara@arm.com
2021-04-22 09:43:15 +02:00
Andy Shevchenko
482715ff06 pinctrl: core: Show pin numbers for the controllers with base = 0
The commit f1b206cf7c ("pinctrl: core: print gpio in pins debugfs file")
enabled GPIO pin number and label in debugfs for pin controller. However,
it limited that feature to the chips where base is positive number. This,
in particular, excluded chips where base is 0 for the historical or backward
compatibility reasons. Refactor the code to include the latter as well.

Fixes: f1b206cf7c ("pinctrl: core: print gpio in pins debugfs file")
Cc: Drew Fustini <drew@beagleboard.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Drew Fustini <drew@beagleboard.org>
Reviewed-by: Drew Fustini <drew@beagleboard.org>
Link: https://lore.kernel.org/r/20210415130356.15885-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-04-22 02:13:42 +02:00
James Bottomley
9d5171eab4 KEYS: trusted: Fix TPM reservation for seal/unseal
The original patch 8c657a0590 ("KEYS: trusted: Reserve TPM for seal
and unseal operations") was correct on the mailing list:

https://lore.kernel.org/linux-integrity/20210128235621.127925-4-jarkko@kernel.org/

But somehow got rebased so that the tpm_try_get_ops() in
tpm2_seal_trusted() got lost.  This causes an imbalanced put of the
TPM ops and causes oopses on TIS based hardware.

This fix puts back the lost tpm_try_get_ops()

Fixes: 8c657a0590 ("KEYS: trusted: Reserve TPM for seal and unseal operations")
Reported-by: Mimi Zohar <zohar@linux.ibm.com>
Acked-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2021-04-21 16:28:20 -07:00
Linus Torvalds
16fc44d638 MMC host:
- meson-gx: Replace WARN_ONCE with dev_warn_once for non-optimal sg-alignment
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Merge tag 'mmc-v5.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fix from Ulf Hansson:
 "Replace WARN_ONCE with dev_warn_once for non-optimal sg-alignment in
  the meson-gx host driver"

* tag 'mmc-v5.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: meson-gx: replace WARN_ONCE with dev_warn_once about scatterlist size alignment in block mode
2021-04-21 10:22:54 -07:00
Christoph Hellwig
68e6582e8f block: return -EBUSY when there are open partitions in blkdev_reread_part
The switch to go through blkdev_get_by_dev means we now ignore the
return value from bdev_disk_changed in __blkdev_get.  Add a manual
check to restore the old semantics.

Fixes: 4601b4b130 ("block: reopen the device in blkdev_reread_part")
Reported-by: Karel Zak <kzak@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210421160502.447418-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-04-21 10:49:37 -06:00
Jiansong Chen
24d034528e drm/amdgpu: fix GCR_GENERAL_CNTL offset for dimgrey_cavefish
dimgrey_cavefish has similar gc_10_3 ip with sienna_cichlid,
so follow its registers offset setting.

Signed-off-by: Jiansong Chen <Jiansong.Chen@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2021-04-21 11:19:26 -04:00
Simon Ser
9ebb6bc012 amd/display: allow non-linear multi-planar formats
Accept non-linear buffers which use a multi-planar format, as long
as they don't use DCC.

Tested on GFX9 with NV12.

Signed-off-by: Simon Ser <contact@emersion.fr>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Harry Wentland <hwentlan@amd.com>
Cc: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Cc: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2021-04-21 11:18:10 -04:00