Commit Graph

997821 Commits

Author SHA1 Message Date
Andrew Morton
e156656717 lib/test_kasan_module.c: suppress unused var warning
Local `unused' is intentionally unused - it is there to suppress
__must_check warnings.

Reported-by: kernel test robot <lkp@intel.com>
Link: https://lkml.kernel.org/r/202104050216.HflRxfJm-lkp@intel.com
Cc: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-09 14:54:23 -07:00
Andrey Konovalov
06b1f85588 kasan: fix conflict with page poisoning
When page poisoning is enabled, it accesses memory that is marked as
poisoned by KASAN, which leas to false-positive KASAN reports.

Suppress the reports by adding KASAN annotations to unpoison_page()
(poison_page() already has them).

Link: https://lkml.kernel.org/r/2dc799014d31ac13fd97bd906bad33e16376fc67.1617118501.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-09 14:54:23 -07:00
Jack Qiu
df41872b68 fs: direct-io: fix missing sdio->boundary
I encountered a hung task issue, but not a performance one.  I run DIO
on a device (need lba continuous, for example open channel ssd), maybe
hungtask in below case:

  DIO:						Checkpoint:
  get addr A(at boundary), merge into BIO,
  no submit because boundary missing
						flush dirty data(get addr A+1), wait IO(A+1)
						writeback timeout, because DIO(A) didn't submit
  get addr A+2 fail, because checkpoint is doing

dio_send_cur_page() may clear sdio->boundary, so prevent it from missing
a boundary.

Link: https://lkml.kernel.org/r/20210322042253.38312-1-jack.qiu@huawei.com
Fixes: b1058b9812 ("direct-io: submit bio after boundary buffer is added to it")
Signed-off-by: Jack Qiu <jack.qiu@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-09 14:54:23 -07:00
Sergei Trofimovich
7ad1e36616 ia64: fix user_stack_pointer() for ptrace()
ia64 has two stacks:

 - memory stack (or stack), pointed at by by r12

 - register backing store (register stack), pointed at by
   ar.bsp/ar.bspstore with complications around dirty
   register frame on CPU.

In [1] Dmitry noticed that PTRACE_GET_SYSCALL_INFO returns the register
stack instead memory stack.

The bug comes from the fact that user_stack_pointer() and
current_user_stack_pointer() don't return the same register:

  ulong user_stack_pointer(struct pt_regs *regs) { return regs->ar_bspstore; }
  #define current_user_stack_pointer() (current_pt_regs()->r12)

The change gets both back in sync.

I think ptrace(PTRACE_GET_SYSCALL_INFO) is the only affected user by
this bug on ia64.

The change fixes 'rt_sigreturn.gen.test' strace test where it was
observed initially.

Link: https://bugs.gentoo.org/769614 [1]
Link: https://lkml.kernel.org/r/20210331084447.2561532-1-slyfox@gentoo.org
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Reported-by: Dmitry V. Levin <ldv@altlinux.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-09 14:54:23 -07:00
Wengang Wang
90bd070aae ocfs2: fix deadlock between setattr and dio_end_io_write
The following deadlock is detected:

  truncate -> setattr path is waiting for pending direct IO to be done (inode->i_dio_count become zero) with inode->i_rwsem held (down_write).

  PID: 14827  TASK: ffff881686a9af80  CPU: 20  COMMAND: "ora_p005_hrltd9"
   #0  __schedule at ffffffff818667cc
   #1  schedule at ffffffff81866de6
   #2  inode_dio_wait at ffffffff812a2d04
   #3  ocfs2_setattr at ffffffffc05f322e [ocfs2]
   #4  notify_change at ffffffff812a5a09
   #5  do_truncate at ffffffff812808f5
   #6  do_sys_ftruncate.constprop.18 at ffffffff81280cf2
   #7  sys_ftruncate at ffffffff81280d8e
   #8  do_syscall_64 at ffffffff81003949
   #9  entry_SYSCALL_64_after_hwframe at ffffffff81a001ad

dio completion path is going to complete one direct IO (decrement
inode->i_dio_count), but before that it hung at locking inode->i_rwsem:

   #0  __schedule+700 at ffffffff818667cc
   #1  schedule+54 at ffffffff81866de6
   #2  rwsem_down_write_failed+536 at ffffffff8186aa28
   #3  call_rwsem_down_write_failed+23 at ffffffff8185a1b7
   #4  down_write+45 at ffffffff81869c9d
   #5  ocfs2_dio_end_io_write+180 at ffffffffc05d5444 [ocfs2]
   #6  ocfs2_dio_end_io+85 at ffffffffc05d5a85 [ocfs2]
   #7  dio_complete+140 at ffffffff812c873c
   #8  dio_aio_complete_work+25 at ffffffff812c89f9
   #9  process_one_work+361 at ffffffff810b1889
  #10  worker_thread+77 at ffffffff810b233d
  #11  kthread+261 at ffffffff810b7fd5
  #12  ret_from_fork+62 at ffffffff81a0035e

Thus above forms ABBA deadlock.  The same deadlock was mentioned in
upstream commit 28f5a8a7c0 ("ocfs2: should wait dio before inode lock
in ocfs2_setattr()").  It seems that that commit only removed the
cluster lock (the victim of above dead lock) from the ABBA deadlock
party.

End-user visible effects: Process hang in truncate -> ocfs2_setattr path
and other processes hang at ocfs2_dio_end_io_write path.

This is to fix the deadlock itself.  It removes inode_lock() call from
dio completion path to remove the deadlock and add ip_alloc_sem lock in
setattr path to synchronize the inode modifications.

[wen.gang.wang@oracle.com: remove the "had_alloc_lock" as suggested]
  Link: https://lkml.kernel.org/r/20210402171344.1605-1-wen.gang.wang@oracle.com

Link: https://lkml.kernel.org/r/20210331203654.3911-1-wen.gang.wang@oracle.com
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-09 14:54:23 -07:00
Nick Desaulniers
9562fd1329 gcov: re-fix clang-11+ support
LLVM changed the expected function signature for llvm_gcda_emit_function()
in the clang-11 release.  Users of clang-11 or newer may have noticed
their kernels producing invalid coverage information:

  $ llvm-cov gcov -a -c -u -f -b <input>.gcda -- gcno=<input>.gcno
  1 <func>: checksum mismatch, \
    (<lineno chksum A>, <cfg chksum B>) != (<lineno chksum A>, <cfg chksum C>)
  2 Invalid .gcda File!
  ...

Fix up the function signatures so calling this function interprets its
parameters correctly and computes the correct cfg checksum.  In
particular, in clang-11, the additional checksum is no longer optional.

Link: https://reviews.llvm.org/rG25544ce2df0daa4304c07e64b9c8b0f7df60c11d
Link: https://lkml.kernel.org/r/20210408184631.1156669-1-ndesaulniers@google.com
Reported-by: Prasad Sodagudi <psodagud@quicinc.com>
Tested-by: Prasad Sodagudi <psodagud@quicinc.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Cc: <stable@vger.kernel.org>	[5.4+]

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-09 14:54:23 -07:00
Mike Rapoport
a3a8833dff nds32: flush_dcache_page: use page_mapping_file to avoid races with swapoff
Commit cb9f753a37 ("mm: fix races between swapoff and flush dcache")
updated flush_dcache_page implementations on several architectures to
use page_mapping_file() in order to avoid races between page_mapping()
and swapoff().

This update missed arch/nds32 and there is a possibility of a race
there.

Replace page_mapping() with page_mapping_file() in nds32 implementation
of flush_dcache_page().

Link: https://lkml.kernel.org/r/20210330175126.26500-1-rppt@kernel.org
Fixes: cb9f753a37 ("mm: fix races between swapoff and flush dcache")
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Greentime Hu <green.hu@gmail.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-09 14:54:23 -07:00
Aili Yao
d3378e86d1 mm/gup: check page posion status for coredump.
When we do coredump for user process signal, this may be an SIGBUS signal
with BUS_MCEERR_AR or BUS_MCEERR_AO code, which means this signal is
resulted from ECC memory fail like SRAR or SRAO, we expect the memory
recovery work is finished correctly, then the get_dump_page() will not
return the error page as its process pte is set invalid by
memory_failure().

But memory_failure() may fail, and the process's related pte may not be
correctly set invalid, for current code, we will return the poison page,
get it dumped, and then lead to system panic as its in kernel code.

So check the poison status in get_dump_page(), and if TRUE, return NULL.

There maybe other scenario that is also better to check the posion status
and not to panic, so make a wrapper for this check, Thanks to David's
suggestion(<david@redhat.com>).

[akpm@linux-foundation.org: s/0/false/]
[yaoaili@kingsoft.com: is_page_poisoned() arg cannot be null, per Matthew]

Link: https://lkml.kernel.org/r/20210322115233.05e4e82a@alex-virtual-machine
Link: https://lkml.kernel.org/r/20210319104437.6f30e80d@alex-virtual-machine
Signed-off-by: Aili Yao <yaoaili@kingsoft.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Aili Yao <yaoaili@kingsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-09 14:54:23 -07:00
Matthew Wilcox
a5c5e44151 .mailmap: fix old email addresses
Update Nick & Nadia's old addresses.

Link: https://lkml.kernel.org/r/20210406134036.GQ2531743@casper.infradead.org
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Nadia Yvette Chambers <nyc@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-09 14:54:23 -07:00
Jordan Crouse
620ff418ef mailmap: update email address for Jordan Crouse
jcrouse at codeaurora.org has started bouncing.  Redirect to a more
permanent address.

Link: https://lkml.kernel.org/r/20210325143700.1490518-1-jordan@cosmicpenguin.net
Signed-off-by: Jordan Crouse <jordan@cosmicpenguin.net>
Cc: Alexander Lobakin <alobakin@pm.me>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kees Cook <keescook@chromium.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-09 14:54:23 -07:00
Marek Behún
b37c384843 treewide: change my e-mail address, fix my name
Change my e-mail address to kabel@kernel.org, and fix my name in
non-code parts (add diacritical mark).

Link: https://lkml.kernel.org/r/20210325171123.28093-2-kabel@kernel.org
Signed-off-by: Marek Behún <kabel@kernel.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jassi Brar <jassisinghbrar@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-09 14:54:23 -07:00
Marek Behún
4873d8cc14 MAINTAINERS: update CZ.NIC's Turris information
Add all the files maintained by Turris team, not only for MOX, but also
for Omnia.  Change website.

Link: https://lkml.kernel.org/r/20210325171123.28093-1-kabel@kernel.org
Signed-off-by: Marek Behún <kabel@kernel.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Jassi Brar <jassisinghbrar@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-09 14:54:23 -07:00
Linus Torvalds
17e7124aad 3 cifs/smb3 fixes, 2 for stable, includes a reconnetct fix and fix for display of devnames with special characters
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Merge tag '5.12-rc6-smb3' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Three cifs/smb3 fixes, two for stable: a reconnect fix and a fix for
  display of devnames with special characters"

* tag '5.12-rc6-smb3' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: escape spaces in share names
  fs: cifs: Remove unnecessary struct declaration
  cifs: On cifs_reconnect, resolve the hostname again.
2021-04-08 18:57:47 -07:00
Linus Torvalds
4fa56ad0d1 RDMA 5.12 third rc pull request
Several bug fixes:
 
 - Regression from the last pull request in cxgb4 related to the ipv6 fixes
 
 - KASAN crasher in rtrs
 
 - oops in hfi1 related to a buggy BIOS
 
 - Userspace could oops qedr's XRC support
 
 - Uninitialized memory when parsing a LS_NLA_TYPE_DGID netlink message
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "Nothing very exciting here, just a few small bug fixes. No red flags
  for this release have shown up.

   - Regression from the last pull request in cxgb4 related to the ipv6
     fixes

   - KASAN crasher in rtrs

   - oops in hfi1 related to a buggy BIOS

   - Userspace could oops qedr's XRC support

   - Uninitialized memory when parsing a LS_NLA_TYPE_DGID netlink
     message"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/addr: Be strict with gid size
  RDMA/qedr: Fix kernel panic when trying to access recv_cq
  IB/hfi1: Fix probe time panic when AIP is enabled with a buggy BIOS
  RDMA/cxgb4: check for ipv6 address properly while destroying listener
  RDMA/rtrs-clt: Close rtrs client conn before destroying rtrs clt session files
2021-04-08 15:51:11 -07:00
Leon Romanovsky
d1c803a9cc RDMA/addr: Be strict with gid size
The nla_len() is less than or equal to 16.  If it's less than 16 then end
of the "gid" buffer is uninitialized.

Fixes: ae43f82867 ("IB/core: Add IP to GID netlink offload")
Link: https://lore.kernel.org/r/20210405074434.264221-1-leon@kernel.org
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-04-08 16:14:56 -03:00
Linus Torvalds
3fb4f979b4 s390 updates for 5.12-rc7
- fix incorrect dereference of the ext_params2 external interrupt parameter,
   which leads to an instant kernel crash if a pfault interrupt occurs.
 
 - add forgotten stack unwinder support, and fix memory leak for the new
   machine check handler stack.
 
 - fix inline assembly register clobbering due to KASAN code instrumentation.
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Merge tag 's390-5.12-6' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 fixes from Heiko Carstens:

 - fix incorrect dereference of the ext_params2 external interrupt
   parameter, which leads to an instant kernel crash if a pfault
   interrupt occurs.

 - add forgotten stack unwinder support, and fix memory leak for the
   new machine check handler stack.

 - fix inline assembly register clobbering due to KASAN code
   instrumentation.

* tag 's390-5.12-6' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/setup: use memblock_free_late() to free old stack
  s390/irq: fix reading of ext_params2 field from lowcore
  s390/unwind: add machine check handler stack
  s390/cpcmd: fix inline assembly register clobbering
2021-04-08 11:09:25 -07:00
Linus Torvalds
e0a472fffe sound fixes for 5.12-rc7
This batch became unexpectedly bigger due to the pending ASoC
 patches, but all look small and fine device-specific fixes.
 Many of the commits are for ASoC Intel drivers, while the rest
 are for ASoC small codec/platform fixes and HD-audio quirks.
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Merge tag 'sound-5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This batch became unexpectedly bigger due to the pending ASoC patches,
  but all look small and fine device-specific fixes.

  Many of the commits are for ASoC Intel drivers, while the rest are for
  ASoC small codec/platform fixes and HD-audio quirks"

* tag 'sound-5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (21 commits)
  ALSA: hda/realtek: Fix speaker amp setup on Acer Aspire E1
  ALSA: aloop: Fix initialization of controls
  ALSA: hda/conexant: Apply quirk for another HP ZBook G5 model
  ASoC: fsl_esai: Fix TDM slot setup for I2S mode
  ASoC: codecs: lpass-rx-macro: set npl clock rate correctly
  ASoC: codecs: lpass-tx-macro: set npl clock rate correctly
  ASoC: sunxi: sun4i-codec: fill ASoC card owner
  ASoC: cygnus: fix for_each_child.cocci warnings
  ASoC: max98373: Added 30ms turn on/off time delay
  ASoC: max98373: Changed amp shutdown register as volatile
  ASoC: intel: atom: Remove 44100 sample-rate from the media and deep-buffer DAI descriptions
  ASoC: intel: atom: Stop advertising non working S24LE support
  ASoC: wm8960: Fix wrong bclk and lrclk with pll enabled for some chips
  ASoC: SOF: Intel: move ELH chip info
  ASoC: SOF: Intel: APL: set shutdown callback to hda_dsp_shutdown
  ASoC: SOF: Intel: CNL: set shutdown callback to hda_dsp_shutdown
  ASoC: SOF: Intel: ICL: set shutdown callback to hda_dsp_shutdown
  ASoC: SOF: Intel: TGL: set shutdown callback to hda_dsp_shutdown
  ASoC: SOF: Intel: TGL: fix EHL ops
  ASoC: SOF: core: harden shutdown helper
  ...
2021-04-08 09:01:30 -07:00
Linus Torvalds
d381b05e86 A lone x86 patch, for a bug found while developing a backport to
stable versions.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fix from Paolo Bonzini:
 "A lone x86 patch, for a bug found while developing a backport to
  stable versions"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86/mmu: preserve pending TLB flush across calls to kvm_tdp_mmu_zap_sp
2021-04-08 08:54:26 -07:00
Linus Torvalds
4ea51e0e37 for-linus-2021-04-08
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Merge tag 'for-linus-2021-04-08' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux

Pull close_range() fix from Christian Brauner:
 "Syzbot reported a bug in close_range.

  Debugging this showed we didn't recalculate the current maximum fd
  number for CLOSE_RANGE_UNSHARE | CLOSE_RANGE_CLOEXEC after we unshared
  the file descriptors table. As a result, max_fd could exceed the
  current fdtable maximum causing us to set excessive bits.

  As a concrete example, let's say the user requested everything from fd
  4 to ~0UL to be closed and their current fdtable size is 256 with
  their highest open fd being 4. With CLOSE_RANGE_UNSHARE the caller
  will end up with a new fdtable which has room for 64 file descriptors
  since that is the lowest fdtable size we accept. But now max_fd will
  still point to 255 and needs to be adjusted. Fix this by retrieving
  the correct maximum fd value in __range_cloexec().

  I've carried this fix for a little while but since there was no
  linux-next release over easter I waited until now.

  With this change close_range() can be further simplified but imho we
  are in no hurry to do that and so I'll defer this for the 5.13 merge
  window"

* tag 'for-linus-2021-04-08' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
  file: fix close_range() for unshare+cloexec
2021-04-08 08:46:53 -07:00
Linus Torvalds
035d80695f Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull umount fix from Al Viro:
 "Brown paperbag time: dumb braino in the series that went into 5.7
  broke the 'don't step into ->d_weak_revalidate() when umount(2) looks
  the victim up' behaviour.

  Spotted only now - saw

        if (!err && unlikely(nd->flags & LOOKUP_MOUNTPOINT)) {
                err = handle_lookup_down(nd);
                nd->flags &= ~LOOKUP_JUMPED; // no d_weak_revalidate(), please...
        }

  and went "why do we clear that flag here - nothing below that point is
  going to check it anyway" / "wait a minute, what is it doing *after*
  complete_walk() (which is where we check that flag and call
  ->d_weak_revalidate())" / "how could that possibly _not_ break?",
  followed by reproducing the breakage and verifying that the obvious
  fix of that braino does, indeed, fix it.

  The reproducer is (assuming that $DIR exists and is exported r/w to
  localhost)

      mkdir $DIR/a
      mkdir /tmp/foo
      mount --bind /tmp/foo /tmp/foo
      mkdir /tmp/foo/a
      mkdir /tmp/foo/b
      mount -t nfs4 localhost:$DIR/a /tmp/foo/a
      mount -t nfs4 localhost:$DIR /tmp/foo/b
      rmdir /tmp/foo/b/a
      umount /tmp/foo/b
      umount /tmp/foo/a
      umount -l /tmp/foo      # will get everything under /tmp/foo, no matter what

  Correct behaviour is successful umount; broken kernels (5.7-rc1 and
  later) get

      umount.nfs4: /tmp/foo/a: Stale file handle

  Note that bind mount is there to be able to recover - on broken
  kernels we'd get stuck with impossible-to-umount filesystem if not for
  that.

  FWIW, that braino had been posted for review back then, at least
  twice. Unfortunately, the call of complete_walk() was outside of diff
  context, so the bogosity hadn't been immediately obvious from the
  patch alone ;-/"

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  LOOKUP_MOUNTPOINT: we are cleaning "jumped" flag too late
2021-04-08 08:26:06 -07:00
Paolo Bonzini
315f02c60d KVM: x86/mmu: preserve pending TLB flush across calls to kvm_tdp_mmu_zap_sp
Right now, if a call to kvm_tdp_mmu_zap_sp returns false, the caller
will skip the TLB flush, which is wrong.  There are two ways to fix
it:

- since kvm_tdp_mmu_zap_sp will not yield and therefore will not flush
  the TLB itself, we could change the call to kvm_tdp_mmu_zap_sp to
  use "flush |= ..."

- or we can chain the flush argument through kvm_tdp_mmu_zap_sp down
  to __kvm_tdp_mmu_zap_gfn_range.  Note that kvm_tdp_mmu_zap_sp will
  neither yield nor flush, so flush would never go from true to
  false.

This patch does the former to simplify application to stable kernels,
and to make it further clearer that kvm_tdp_mmu_zap_sp will not flush.

Cc: seanjc@google.com
Fixes: 048f49809c ("KVM: x86/mmu: Ensure TLBs are flushed for TDP MMU during NX zapping")
Cc: <stable@vger.kernel.org> # 5.10.x: 048f49809c: KVM: x86/mmu: Ensure TLBs are flushed for TDP MMU during NX zapping
Cc: <stable@vger.kernel.org> # 5.10.x: 33a3164161: KVM: x86/mmu: Don't allow TDP MMU to yield when recovering NX pages
Cc: <stable@vger.kernel.org>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-04-08 07:48:18 -04:00
Takashi Iwai
c8426b2700 ALSA: hda/realtek: Fix speaker amp setup on Acer Aspire E1
We've got a report about Acer Aspire E1 (PCI SSID 1025:0840) that
loses the speaker output after resume.  With the comparison of COEF
dumps, it was identified that the COEF 0x0d bits 0x6000 corresponds to
the speaker amp.

This patch adds the specific quirk for the device to restore the COEF
bits at the codec (re-)initialization.

BugLink: https://bugzilla.suse.com/show_bug.cgi?id=1183869
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210407095730.12560-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-04-08 10:04:05 +02:00
Maciek Borzecki
0fc9322ab5 cifs: escape spaces in share names
Commit 653a5efb84 ("cifs: update super_operations to show_devname")
introduced the display of devname for cifs mounts. However, when mounting
a share which has a whitespace in the name, that exact share name is also
displayed in mountinfo. Make sure that all whitespace is escaped.

Signed-off-by: Maciek Borzecki <maciek.borzecki@gmail.com>
CC: <stable@vger.kernel.org> # 5.11+
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-07 21:30:27 -05:00
Wan Jiabing
d135be0a7f fs: cifs: Remove unnecessary struct declaration
struct cifs_readdata is declared twice. One is declared
at 208th line.
And struct cifs_readdata is defined blew.
The declaration here is not needed. Remove the duplicate.

Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-07 21:30:27 -05:00
Shyam Prasad N
4e456b30f7 cifs: On cifs_reconnect, resolve the hostname again.
On cifs_reconnect, make sure that DNS resolution happens again.
It could be the cause of connection to go dead in the first place.

This also contains the fix for a build issue identified by Intel bot.
Reported-by: kernel test robot <lkp@intel.com>

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
CC: <stable@vger.kernel.org> # 5.11+
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-04-07 21:29:36 -05:00
Kamal Heib
e1ad897b9c RDMA/qedr: Fix kernel panic when trying to access recv_cq
As INI QP does not require a recv_cq, avoid the following null pointer
dereference by checking if the qp_type is not INI before trying to extract
the recv_cq.

BUG: kernel NULL pointer dereference, address: 00000000000000e0
 #PF: supervisor read access in kernel mode
 #PF: error_code(0x0000) - not-present page
 PGD 0 P4D 0
 Oops: 0000 [#1] SMP PTI
 CPU: 0 PID: 54250 Comm: mpitests-IMB-MP Not tainted 5.12.0-rc5 #1
 Hardware name: Dell Inc. PowerEdge R320/0KM5PX, BIOS 2.7.0 08/19/2019
 RIP: 0010:qedr_create_qp+0x378/0x820 [qedr]
 Code: 02 00 00 50 e8 29 d4 a9 d1 48 83 c4 18 e9 65 fe ff ff 48 8b 53 10 48 8b 43 18 44 8b 82 e0 00 00 00 45 85 c0 0f 84 10 74 00 00 <8b> b8 e0 00 00 00 85 ff 0f 85 50 fd ff ff e9 fd 73 00 00 48 8d bd
 RSP: 0018:ffff9c8f056f7a70 EFLAGS: 00010202
 RAX: 0000000000000000 RBX: ffff9c8f056f7b58 RCX: 0000000000000009
 RDX: ffff8c41a9744c00 RSI: ffff9c8f056f7b58 RDI: ffff8c41c0dfa280
 RBP: ffff8c41c0dfa280 R08: 0000000000000002 R09: 0000000000000001
 R10: 0000000000000000 R11: ffff8c41e06fc608 R12: ffff8c4194052000
 R13: 0000000000000000 R14: ffff8c4191546070 R15: ffff8c41c0dfa280
 FS:  00007f78b2787b80(0000) GS:ffff8c43a3200000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 00000000000000e0 CR3: 00000001011d6002 CR4: 00000000001706f0
 Call Trace:
  ib_uverbs_handler_UVERBS_METHOD_QP_CREATE+0x4e4/0xb90 [ib_uverbs]
  ? ib_uverbs_cq_event_handler+0x30/0x30 [ib_uverbs]
  ib_uverbs_run_method+0x6f6/0x7a0 [ib_uverbs]
  ? ib_uverbs_handler_UVERBS_METHOD_QP_DESTROY+0x70/0x70 [ib_uverbs]
  ? __cond_resched+0x15/0x30
  ? __kmalloc+0x5a/0x440
  ib_uverbs_cmd_verbs+0x195/0x360 [ib_uverbs]
  ? xa_load+0x6e/0x90
  ? cred_has_capability+0x7c/0x130
  ? avc_has_extended_perms+0x17f/0x440
  ? vma_link+0xae/0xb0
  ? vma_set_page_prot+0x2a/0x60
  ? mmap_region+0x298/0x6c0
  ? do_mmap+0x373/0x520
  ? selinux_file_ioctl+0x17f/0x220
  ib_uverbs_ioctl+0xa7/0x110 [ib_uverbs]
  __x64_sys_ioctl+0x84/0xc0
  do_syscall_64+0x33/0x40
  entry_SYSCALL_64_after_hwframe+0x44/0xae
 RIP: 0033:0x7f78b120262b

Fixes: 06e8d1df46 ("RDMA/qedr: Add support for user mode XRC-SRQ's")
Link: https://lore.kernel.org/r/20210404125501.154789-1-kamalheib1@gmail.com
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-04-07 20:28:26 -03:00
Linus Torvalds
454859c552 ARC fixlets for 5.12-rc7
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Merge tag 'arc-5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixlets from Vineet Gupta:
 "A few straggler fixes for ARC"

* tag 'arc-5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: treewide: avoid the pointer addition with NULL pointer
  arc: kernel: Return -EFAULT if copy_to_user() fails
  ARC: haps: bump memory to 1 GB
2021-04-07 13:21:21 -07:00
Mike Marciniszyn
5de61a47eb IB/hfi1: Fix probe time panic when AIP is enabled with a buggy BIOS
A panic can result when AIP is enabled:

  BUG: unable to handle kernel NULL pointer dereference at 000000000000000
  PGD 0 P4D 0
  Oops: 0000 1 SMP PTI
  CPU: 70 PID: 981 Comm: systemd-udevd Tainted: G OE --------- - - 4.18.0-240.el8.x86_64 #1
  Hardware name: Intel Corporation S2600KP/S2600KP, BIOS SE5C610.86B.01.01.0005.101720141054 10/17/2014
  RIP: 0010:__bitmap_and+0x1b/0x70
  RSP: 0018:ffff99aa0845f9f0 EFLAGS: 00010246
  RAX: 0000000000000000 RBX: ffff8d5a6fc18000 RCX: 0000000000000048
  RDX: 0000000000000000 RSI: ffffffffc06336f0 RDI: ffff8d5a8fa67750
  RBP: 0000000000000079 R08: 0000000fffffffff R09: 0000000000000000
  R10: 0000000000000000 R11: 0000000000000001 R12: ffffffffc06336f0
  R13: 00000000000000a0 R14: ffff8d5a6fc18000 R15: 0000000000000003
  FS: 00007fec137a5980(0000) GS:ffff8d5a9fa80000(0000) knlGS:0000000000000000
  CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 0000000000000000 CR3: 0000000a04b48002 CR4: 00000000001606e0
  Call Trace:
  hfi1_num_netdev_contexts+0x7c/0x110 [hfi1]
  hfi1_init_dd+0xd7f/0x1a90 [hfi1]
  ? pci_bus_read_config_dword+0x49/0x70
  ? pci_mmcfg_read+0x3e/0xe0
  do_init_one.isra.18+0x336/0x640 [hfi1]
  local_pci_probe+0x41/0x90
  pci_device_probe+0x105/0x1c0
  really_probe+0x212/0x440
  driver_probe_device+0x49/0xc0
  device_driver_attach+0x50/0x60
  __driver_attach+0x61/0x130
  ? device_driver_attach+0x60/0x60
  bus_for_each_dev+0x77/0xc0
  ? klist_add_tail+0x3b/0x70
  bus_add_driver+0x14d/0x1e0
  ? dev_init+0x10b/0x10b [hfi1]
  driver_register+0x6b/0xb0
  ? dev_init+0x10b/0x10b [hfi1]
  hfi1_mod_init+0x1e6/0x20a [hfi1]
  do_one_initcall+0x46/0x1c3
  ? free_unref_page_commit+0x91/0x100
  ? _cond_resched+0x15/0x30
  ? kmem_cache_alloc_trace+0x140/0x1c0
  do_init_module+0x5a/0x220
  load_module+0x14b4/0x17e0
  ? __do_sys_finit_module+0xa8/0x110
  __do_sys_finit_module+0xa8/0x110
  do_syscall_64+0x5b/0x1a0

The issue happens when pcibus_to_node() returns NO_NUMA_NODE.

Fix this issue by moving the initialization of dd->node to hfi1_devdata
allocation and remove the other pcibus_to_node() calls in the probe path
and use dd->node instead.

Affinity logic is adjusted to use a new field dd->affinity_entry as a
guard instead of dd->node.

Fixes: 4730f4a6c6 ("IB/hfi1: Activate the dummy netdev")
Link: https://lore.kernel.org/r/1617025700-31865-4-git-send-email-dennis.dalessandro@cornelisnetworks.com
Cc: stable@vger.kernel.org
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-04-07 15:31:59 -03:00
Potnuri Bharat Teja
603c4690b0 RDMA/cxgb4: check for ipv6 address properly while destroying listener
ipv6 bit is wrongly set by the below which causes fatal adapter lookup
engine errors for ipv4 connections while destroying a listener.  Fix it to
properly check the local address for ipv6.

Fixes: 3408be145a ("RDMA/cxgb4: Fix adapter LE hash errors while destroying ipv6 listening server")
Link: https://lore.kernel.org/r/20210331135715.30072-1-bharat@chelsio.com
Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-04-07 15:31:45 -03:00
Linus Torvalds
3a22981230 ARM SoC fixes for v5.12, part 2
Most of the changes again are devicetree fixes, but there are also five
 trivial build fixes for issues I found when test building with gcc-11 or
 when running 'make W=1', and some OMAP platform specific code fixups.
 
 Broadcom
   - One revert for a Raspberry pi interrupt controller change that
     caused a regression.
 
 TI OMAP:
   - Remove unused duplicate sha2md5_fck clock node that can race with the
     OMAP4_SHA2MD5_CLKCTRL clock node for disable for unused clocks
 
   - Add aliases for omap4/5 mmc to put the slots back into the right
     order again
 
   - Fix typo for bionic voltage controllers that accidentally use mpu
     for all instances instead of mpu, core and iva
 
   - Fix random hangs for droid4 caused by missing fix from TI Android
     kernel tree to do a dummy smc call on cpuidle wakeup path
 
 NXP i.MX:
   - Fix a system failure on imx6qdl-phytec-pfla02 board when booting from
     SD, by adding missing vmmc supply for SD interfaces.
 
   - Fix address typo in i.MX8MM/Q IOMUXC_SD1_DATA0_GPIO2_IO2 definition.
 
 Marvell mvebu:
   - Fix storm interrupt on Turris Omnia
 
   - Enable hardware buffer management as it should be
 
 Build fixes for PXA, Freescale, Marvell, OMAP1 an Keystone.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'arm-fixes-5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Most of the changes again are devicetree fixes, but there are also
  five trivial build fixes for issues I found when test building with
  gcc-11 or when running 'make W=1', and some OMAP platform specific
  code fixups.

  Broadcom:
   - One revert for a Raspberry pi interrupt controller change that
     caused a regression.

  TI OMAP:
   - Remove unused duplicate sha2md5_fck clock node that can race with
     the OMAP4_SHA2MD5_CLKCTRL clock node for disable for unused clocks

   - Add aliases for omap4/5 mmc to put the slots back into the right
     order again

   - Fix typo for bionic voltage controllers that accidentally use mpu
     for all instances instead of mpu, core and iva

   - Fix random hangs for droid4 caused by missing fix from TI Android
     kernel tree to do a dummy smc call on cpuidle wakeup path

  NXP i.MX:
   - Fix a system failure on imx6qdl-phytec-pfla02 board when booting
     from SD, by adding missing vmmc supply for SD interfaces.

   - Fix address typo in i.MX8MM/Q IOMUXC_SD1_DATA0_GPIO2_IO2
     definition.

  Marvell mvebu:
   - Fix storm interrupt on Turris Omnia

   - Enable hardware buffer management as it should be

  ... and build fixes for PXA, Freescale, Marvell, OMAP1 and Keystone"

* tag 'arm-fixes-5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: dts: turris-omnia: configure LED[2]/INTn pin as interrupt pin
  ARM: dts: turris-omnia: fix hardware buffer management
  Revert "arm64: dts: marvell: armada-cp110: Switch to per-port SATA interrupts"
  ARM: mvebu: avoid clang -Wtautological-constant warning
  ARM: pxa: mainstone: avoid -Woverride-init warning
  ARM: omap1: fix building with clang IAS
  soc/fsl: qbman: fix conflicting alignment attributes
  ARM: keystone: fix integer overflow warning
  ARM: dts: imx6: pbab01: Set vmmc supply for both SD interfaces
  arm64: dts: imx8mm/q: Fix pad control of SD1_DATA0
  ARM: OMAP4: PM: update ROM return address for OSWR and OFF
  ARM: OMAP4: Fix PMIC voltage domains for bionic
  ARM: dts: Fix moving mmc devices with aliases for omap4 & 5
  ARM: dts: Drop duplicate sha2md5_fck to fix clk_disable race
  Revert "ARM: dts: bcm2711: Add the BSC interrupt controller"
2021-04-07 09:26:50 -07:00
Linus Torvalds
dbaa5d1c25 Merge branch 'parisc-5.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
 "One link error fix found by the kernel test robot, one sparse warning
  fix, remove a duplicate declaration and some spelling fixes"

* 'parisc-5.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: math-emu: Few spelling fixes in the file fpu.h
  parisc: avoid a warning on u8 cast for cmpxchg on u8 pointers
  parisc: parisc-agp requires SBA IOMMU driver
  parisc: Remove duplicate struct task_struct declaration
2021-04-07 09:20:07 -07:00
Linus Torvalds
5ba091db93 platform-drivers-x86 for v5.12-3
A single bugfix (on top of platform-drivers-x86-v5.12-2) to fix spurious
 wakeups from suspend caused by recent intel-hid driver changes.
 
 The following is an automated git shortlog grouped by driver:
 
 intel-hid:
  -  Fix spurious wakeups caused by tablet-mode events during suspend
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Merge tag 'platform-drivers-x86-v5.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver fix from Hans de Goede:
 "A single bugfix to fix spurious wakeups from suspend caused by recent
  intel-hid driver changes"

* tag 'platform-drivers-x86-v5.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
  platform/x86: intel-hid: Fix spurious wakeups caused by tablet-mode events during suspend
2021-04-07 09:14:04 -07:00
Linus Torvalds
e3bb2f4f96 regulator: bd9571mwv fixes for v5.12
A set of driver specific fixes here, the main one is a fix to not try to
 set unsupported voltages on this device.  The other two patches clean up
 the error handling and eliminate the possibility that we could overflow
 the page when writing sysfs output (which AFAICT wasn't an issue but
 better to be sure).
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Merge tag 'regulator-fix-v5.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "bd9571mwv regulator fixes for v5.12.

  A set of driver specific fixes here, the main one is a fix to not try
  to set unsupported voltages on this device. The other two patches
  clean up the error handling and eliminate the possibility that we
  could overflow the page when writing sysfs output (which AFAICT wasn't
  an issue but better to be sure)"

* tag 'regulator-fix-v5.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: bd9571mwv: Convert device attribute to sysfs_emit()
  regulator: bd9571mwv: Fix regulator name printed on registration failure
  regulator: bd9571mwv: Fix AVS and DVFS voltage range
2021-04-07 09:08:36 -07:00
Takashi Iwai
9c3195778c ASoC: Fixes for v5.12
A fairly small batch of driver specific fixes, mainly for various x86
 systems with the biggest set being fixes to power down DSPs properly on
 x86 SOF systems.
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Merge tag 'asoc-fix-v5.12-rc6' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v5.12

A fairly small batch of driver specific fixes, mainly for various x86
systems with the biggest set being fixes to power down DSPs properly on
x86 SOF systems.
2021-04-07 15:00:33 +02:00
Heiko Carstens
ad31a8c051 s390/setup: use memblock_free_late() to free old stack
Use memblock_free_late() to free the old machine check stack to the
buddy allocator instead of leaking it.

Fixes: b61b159512 ("s390: add stack for machine check handler")
Cc: Vasily Gorbik <gor@linux.ibm.com>
Acked-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-04-07 14:37:28 +02:00
Jonas Holmberg
168632a495 ALSA: aloop: Fix initialization of controls
Add a control to the card before copying the id so that the numid field
is initialized in the copy. Otherwise the numid field of active_id,
format_id, rate_id and channels_id will be the same (0) and
snd_ctl_notify() will not queue the events properly.

Signed-off-by: Jonas Holmberg <jonashg@axis.com>
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210407075428.2666787-1-jonashg@axis.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-04-07 10:21:25 +02:00
Al Viro
4f0ed93fb9 LOOKUP_MOUNTPOINT: we are cleaning "jumped" flag too late
That (and traversals in case of umount .) should be done before
complete_walk().  Either a braino or mismerge damage on queue
reorders - either way, I should've spotted that much earlier.

Fucked-up-by: Al Viro <viro@zeniv.linux.org.uk>
X-Paperbag: Brown
Fixes: 161aff1d93 "LOOKUP_MOUNTPOINT: fold path_mountpointat() into path_lookupat()"
Cc: stable@vger.kernel.org # v5.7+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2021-04-06 20:33:00 -04:00
Arnd Bergmann
1180042dc6 Merge tag 'mvebu-fixes-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu into arm/fixes
mvebu fixes for 5.12 (part 1)

2 fixes on on turris-omnia (Armada 38x based:)
 - Fix storm interrupt
 - Enable hardware buffer management as it should be

Unbreak AHCI on all Marvell Armada 7k8k / CN913x platforms

* tag 'mvebu-fixes-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu:
  ARM: dts: turris-omnia: configure LED[2]/INTn pin as interrupt pin
  ARM: dts: turris-omnia: fix hardware buffer management
  Revert "arm64: dts: marvell: armada-cp110: Switch to per-port SATA interrupts"

Link: https://lore.kernel.org/r/87a6qgctit.fsf@BL-laptop
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-04-06 23:21:08 +02:00
Hans de Goede
a3790a8a94 platform/x86: intel-hid: Fix spurious wakeups caused by tablet-mode events during suspend
Some devices send (duplicate) tablet-mode events when moved around even
though the mode has not changed; and they do this even when suspended.

Change the tablet-mode event handling when priv->wakeup_mode is set to
update the switch state in case it changed and then return immediately
(without calling pm_wakeup_hard_event()) to avoid spurious wakeups.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=212537
Fixes: 537b0dd472 ("platform/x86: intel-hid: Add support for SW_TABLET_MODE")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Elia Devito <eliadevito@gmail.com>
Link: https://lore.kernel.org/r/20210404143831.25173-1-hdegoede@redhat.com
2021-04-06 22:10:21 +02:00
Linus Torvalds
2d74366078 Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull fs fixes from Al Viro:
 "Fairly old hostfs bug (in setups that are not used by anyone,
  apparently) + fix for this cycle regression: extra dput/mntput in
  LOOKUP_CACHED failure handling"

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  Make sure nd->path.mnt and nd->path.dentry are always valid pointers
  hostfs: fix memory handling in follow_link()
2021-04-06 12:52:49 -07:00
Al Viro
7d01ef7585 Make sure nd->path.mnt and nd->path.dentry are always valid pointers
Initialize them in set_nameidata() and make sure that terminate_walk() clears them
once the pointers become potentially invalid (i.e. we leave RCU mode or drop them
in non-RCU one).  Currently we have "path_init() always initializes them and nobody
accesses them outside of path_init()/terminate_walk() segments", which is asking
for trouble.

With that change we would have nd->path.{mnt,dentry}
	1) always valid - NULL or pointing to currently allocated objects.
	2) non-NULL while we are successfully walking
	3) NULL when we are not walking at all
	4) contributing to refcounts whenever non-NULL outside of RCU mode.

Fixes: 6c6ec2b0a3 ("fs: add support for LOOKUP_CACHED")
Reported-by: syzbot+c88a7030da47945a3cc3@syzkaller.appspotmail.com
Tested-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2021-04-06 12:33:07 -04:00
Bhaskar Chowdhury
0aa2ddc9af parisc: math-emu: Few spelling fixes in the file fpu.h
with some additional cleanups by Helge.

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Helge Deller <deller@gmx.de>
2021-04-06 15:34:14 +02:00
Gao Xiang
4d752e5af6 parisc: avoid a warning on u8 cast for cmpxchg on u8 pointers
commit b344d6a83d ("parisc: add support for cmpxchg on u8 pointers")
can generate a sparse warning ("cast truncates bits from constant
value"), which has been reported several times [1] [2] [3].

The original code worked as expected, but anyway, let silence such
sparse warning as what others did [4].

[1] https://lore.kernel.org/r/202104061220.nRMBwCXw-lkp@intel.com
[2] https://lore.kernel.org/r/202012291914.T5Agcn99-lkp@intel.com
[3] https://lore.kernel.org/r/202008210829.KVwn7Xeh%25lkp@intel.com
[4] https://lore.kernel.org/r/20210315131512.133720-2-jacopo+renesas@jmondi.org
Cc: Liam Beguin <liambeguin@gmail.com>
Cc: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v5.8+
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
Signed-off-by: Helge Deller <deller@gmx.de>
2021-04-06 14:32:12 +02:00
Takashi Iwai
c6423ed2da ALSA: hda/conexant: Apply quirk for another HP ZBook G5 model
There is another HP ZBook G5 model with the PCI SSID 103c:844f that
requires the same quirk for controlling the mute LED.  Add the
corresponding entry to the quirk table.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=212407
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210401171314.667-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-04-06 13:40:13 +02:00
Helge Deller
9054284e88 parisc: parisc-agp requires SBA IOMMU driver
Add a dependency to the SBA IOMMU driver to avoid:
ERROR: modpost: "sba_list" [drivers/char/agp/parisc-agp.ko] undefined!

Reported-by: kernel test robot <lkp@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Helge Deller <deller@gmx.de>
2021-04-06 11:46:39 +02:00
Wan Jiabing
4033e76a7a parisc: Remove duplicate struct task_struct declaration
struct task_struct is declared twice. One has been declared
at 154th line. Remove the duplicate.

Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Signed-off-by: Helge Deller <deller@gmx.de>
2021-04-06 11:46:26 +02:00
Linus Torvalds
0a50438c84 Merge branch 'for-5.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue fixes from Tejun Heo:
 "Two workqueue fixes.

  One is around debugobj and poses no risk. The other is to prevent the
  stall watchdog from firing spuriously in certain conditions. Not as
  trivial as debugobj change but is still fairly low risk"

* 'for-5.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue/watchdog: Make unbound workqueues aware of touch_softlockup_watchdog() 84;0;0c84;0;0c There are two workqueue-specific watchdog timestamps:
  workqueue: Move the position of debug_work_activate() in __queue_work()
2021-04-05 09:35:58 -07:00
Heiko Carstens
85012e764d s390/irq: fix reading of ext_params2 field from lowcore
The contents of the ext_params2 field of the lowcore should just be
copied to the pt_regs structure, not dereferenced.

Fixes crashes / program check loops like this:

Krnl PSW : 0404c00180000000 00000000d6d02b3c (do_ext_irq+0x74/0x170)
           R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 RI:0 EA:3
Krnl GPRS: 0000000000000000 80000000000b974e 00000000d71abee0 00000000d71abee0
           0000000080030000 000000000000000f 0000000000000000 0000000000000000
           0000000000000001 00000380000bf918 00000000d73ef780 00000380000bf518
           0000000080348000 00000000d6d13350 00000000d6d02b1e 00000380000bf428
Krnl Code: 00000000d6d02b2e: 58100080            l       %r1,128
           00000000d6d02b32: 5010b0a4            st      %r1,164(%r11)
          #00000000d6d02b36: e31001b80104        lg      %r1,4536
          >00000000d6d02b3c: e31010000004        lg      %r1,0(%r1)
           00000000d6d02b42: e310b0a80024        stg     %r1,168(%r11)
           00000000d6d02b48: c01000242270        larl    %r1,00000000d7187028
           00000000d6d02b4e: d5071000b010        clc     0(8,%r1),16(%r11)
           00000000d6d02b54: a784001b            brc     8,00000000d6d02b8a
Call Trace:
 [<00000000d6d02b3c>] do_ext_irq+0x74/0x170
 [<00000000d6d0ea5c>] ext_int_handler+0xc4/0xf4
 [<00000000d621d266>] die+0x106/0x188
 [<00000000d62305b8>] do_no_context+0xc8/0x100
 [<00000000d6d02790>] __do_pgm_check+0xe0/0x1f0
 [<00000000d6d0e950>] pgm_check_handler+0x118/0x160
 [<00000000d6d02b3c>] do_ext_irq+0x74/0x170
 [<00000000d6d0ea5c>] ext_int_handler+0xc4/0xf4
 [<00000000d621d266>] die+0x106/0x188
 [<00000000d62305b8>] do_no_context+0xc8/0x100
 [<00000000d6d02790>] __do_pgm_check+0xe0/0x1f0
 [<00000000d6d0e950>] pgm_check_handler+0x118/0x160
 [<00000000d6d02b3c>] do_ext_irq+0x74/0x170
 [<00000000d6d0ea5c>] ext_int_handler+0xc4/0xf4
 [<0000000000000000>] 0x0
 [<00000000d6d0e57a>] default_idle_call+0x42/0x110
 [<00000000d629856e>] do_idle+0xce/0x160
 [<00000000d62987be>] cpu_startup_entry+0x36/0x40
 [<00000000d621f2f2>] smp_start_secondary+0x82/0x88

Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Fixes: 56e62a7370 ("s390: convert to generic entry")
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-04-05 11:30:07 +02:00
Vasily Gorbik
08edb9683e s390/unwind: add machine check handler stack
Fixes: b61b159512 ("s390: add stack for machine check handler")
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-04-05 11:30:07 +02:00
Alexander Gordeev
7a2f91441b s390/cpcmd: fix inline assembly register clobbering
Register variables initialized using arithmetic. That leads to
kasan instrumentaton code corrupting the registers contents.
Follow GCC guidlines and use temporary variables for assigning
init values to register variables.

Fixes: 94c12cc7d1 ("[S390] Inline assembly cleanup.")
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://gcc.gnu.org/onlinedocs/gcc-10.2.0/gcc/Local-Register-Variables.html
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-04-05 11:30:07 +02:00