Commit Graph

1043685 Commits

Author SHA1 Message Date
Chuck Lever
110cb2d2f9 NFS: Instrument i_size_write()
Generate a trace event whenever the NFS client modifies the size of
a file. These new events aid troubleshooting workloads that trigger
races around size updates.

There are four new trace points, all named nfs_size_something so
they are easy to grep for or enable as a group with a single glob.

Size updated on the server:

  kworker/u24:10-194   [010]   369.939174: nfs_size_update:      fileid=00:28:2 fhandle=0x36fbbe51 version=1752899344277980615 cursize=250471 newsize=172083

Server-side size update reported via NFSv3 WCC attributes:

             fsx-1387  [006]   380.760686: nfs_size_wcc:         fileid=00:28:2 fhandle=0x36fbbe51 version=1752899355909932456 cursize=146792 newsize=171216

File has been truncated locally:

             fsx-1387  [007]   369.437421: nfs_size_truncate:    fileid=00:28:2 fhandle=0x36fbbe51 version=1752899231200117272 cursize=215244 newsize=0

File has been extended locally:

             fsx-1387  [007]   369.439213: nfs_size_grow:        fileid=00:28:2 fhandle=0x36fbbe51 version=1752899343704248410 cursize=258048 newsize=262144

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-10 11:05:54 +02:00
Chuck Lever
0392dd51f9 SUNRPC: Per-rpc_clnt task PIDs
The current range of RPC task PIDs is 0..65535. That's not adequate
for distinguishing tasks across multiple rpc_clnts running high
throughput workloads.

To help relieve this situation and to reduce the bottleneck of
having a single atomic for assigning all RPC task PIDs, assign task
PIDs per rpc_clnt.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-10 11:05:54 +02:00
Chuck Lever
8e09650f5e NFS: Remove unnecessary TRACE_DEFINE_ENUM()s
Clean up: TRACE_DEFINE_ENUM is unnecessary because the target
symbols are all C macros, not enums.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-10 11:05:54 +02:00
Baptiste Lepers
a2915fa062 pnfs/flexfiles: Fix misplaced barrier in nfs4_ff_layout_prepare_ds
_nfs4_pnfs_v3/v4_ds_connect do
   some work
   smp_wmb
   ds->ds_clp = clp;

And nfs4_ff_layout_prepare_ds currently does
   smp_rmb
   if(ds->ds_clp)
      ...

This patch places the smp_rmb after the if. This ensures that following
reads only happen once nfs4_ff_layout_prepare_ds has checked that data
has been properly initialized.

Fixes: d67ae825a5 ("pnfs/flexfiles: Add the FlexFile Layout Driver")
Signed-off-by: Baptiste Lepers <baptiste.lepers@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-03 23:00:50 -04:00
Trond Myklebust
36a10a3c4c NFS: Remove unnecessary page cache invalidations
Remove cache invalidations that are already covered by change attribute
updates.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-03 20:49:07 -04:00
Trond Myklebust
b97583b263 NFS: Do not flush the readdir cache in nfs_dentry_iput()
The original premise in commit 83672d392f ("NFS: Fix directory caching
problem - with test case and patch.") was that readdirplus was caching
attribute information and replaying it later. This is no longer the
case.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-03 20:49:07 -04:00
Trond Myklebust
cec08f452a NFS: Fix dentry verifier races
If the directory changed while we were revalidating the dentry, then
don't update the dentry verifier. There is no value in setting the
verifier to an older value, and we could end up overwriting a more up to
date verifier from a parallel revalidation.

Fixes: efeda80da3 ("NFSv4: Fix revalidation of dentries with delegations")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Tested-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
2021-10-03 20:49:07 -04:00
Trond Myklebust
ff81dfb5d7 NFS: Further optimisations for 'ls -l'
If a user is doing 'ls -l', we have a heuristic in GETATTR that tells
the readdir code to try to use READDIRPLUS in order to refresh the inode
attributes. In certain cirumstances, we also try to invalidate the
remaining directory entries in order to ensure this refresh.

If there are multiple readers of the directory, we probably should avoid
invalidating the page cache, since the heuristic breaks down in that
situation anyway.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Tested-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
2021-10-03 20:49:07 -04:00
Trond Myklebust
2929bc3329 NFS: Fix up nfs_readdir_inode_mapping_valid()
The check for duplicate readdir cookies should only care if the change
attribute is invalid or the data cache is invalid.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Tested-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
2021-10-03 20:49:07 -04:00
Trond Myklebust
a6a361c4ca NFS: Ignore the directory size when marking for revalidation
If we want to revalidate the directory, then just mark the change
attribute as invalid.

Fixes: 13c0b082b6 ("NFS: Replace use of NFS_INO_REVAL_PAGECACHE when checking cache validity")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Tested-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
2021-10-03 20:49:06 -04:00
Trond Myklebust
488796ec1e NFS: Don't set NFS_INO_DATA_INVAL_DEFER and NFS_INO_INVALID_DATA
NFS_INO_DATA_INVAL_DEFER and NFS_INO_INVALID_DATA should be considered
mutually exclusive.

Fixes: 1c341b7775 ("NFS: Add deferred cache invalidation for close-to-open consistency violations")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Tested-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
2021-10-03 20:49:06 -04:00
Trond Myklebust
eea413308f NFS: Default change_attr_type to NFS4_CHANGE_TYPE_IS_UNDEFINED
Both NFSv3 and NFSv2 generate their change attribute from the ctime
value that was supplied by the server. However the problem is that there
are plenty of servers out there with ctime resolutions of 1ms or worse.
In a modern performance system, this is insufficient when trying to
decide which is the most recent set of attributes when, for instance, a
READ or GETATTR call races with a WRITE or SETATTR.

For this reason, let's revert to labelling the NFSv2/v3 change
attributes as NFS4_CHANGE_TYPE_IS_UNDEFINED. This will ensure we protect
against such races.

Fixes: 7b24dacf08 ("NFS: Another inode revalidation improvement")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Tested-by: Chuck Lever <chuck.lever@oracle.com>
2021-10-03 20:49:06 -04:00
Trond Myklebust
a1e7f30a86 NFSv4: Retrieve ACCESS on open if we're not using NFS4_CREATE_EXCLUSIVE
NFS4_CREATE_EXCLUSIVE does not allow the caller to set an access mode,
so for most Linux filesystems, the access call ends up returning no
permissions. However both NFS4_CREATE_EXCLUSIVE4_1 and
NFS4_CREATE_GUARDED allow the client to set the access mode.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-03 20:49:06 -04:00
Trond Myklebust
43d20e80e2 NFS: Fix a few more clear_bit() instances that need release semantics
All these bits are being used as bit locks.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-03 20:49:06 -04:00
Trond Myklebust
33c3214bf4 SUNRPC: xprt_clear_locked() only needs release memory semantics
The clearing of the XPRT_LOCKED bit has to happen after we clear
xprt->snd_task, but we don't require any extra memory barriers after
that.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-03 20:49:06 -04:00
Trond Myklebust
b9f8713f42 SUNRPC: Remove unnecessary memory barriers
The only check for RPC_TASK_RUNNING is the one in rpc_make_runnable(),
which happens under the same spin lock held when we call
rpc_clear_running().

Ditto, the last check for RPC_TASK_QUEUED in rpc_execute() is performed
under the same lock as the one held when we call rpc_clear_queued().

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-03 20:49:05 -04:00
Trond Myklebust
6dbcbe3f78 SUNRPC: Remove WQ_HIGHPRI from xprtiod
Don't let xprtiod pre-empt softirq.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-03 20:49:05 -04:00
Trond Myklebust
47dd8796a3 SUNRPC: Add cond_resched() at the appropriate point in __rpc_execute()
Allow tasks that need to pre-empt rpciod/xprtiod to do so when it is
safe.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-03 20:49:05 -04:00
Trond Myklebust
ea7a1019d8 SUNRPC: Partial revert of commit 6f9f17287e
The premise of commit 6f9f17287e ("SUNRPC: Mitigate cond_resched() in
xprt_transmit()") was that cond_resched() is expensive and unnecessary
when there has been just a single send.
The point of cond_resched() is to ensure that tasks that should pre-empt
this one get a chance to do so when it is safe to do so. The code prior
to commit 6f9f17287e failed to take into account that it was keeping a
rpc_task pinned for longer than it needed to, and so rather than doing a
full revert, let's just move the cond_resched.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-03 20:49:05 -04:00
Trond Myklebust
ca05cbae2a NFS: Fix up nfs_ctx_key_to_expire()
If the cached credential exists but doesn't have any expiration callback
then exit early.
Fix up atomicity issues when replacing the credential with a new one
since the existing code could lead to refcount leaks.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-03 20:49:05 -04:00
Trond Myklebust
9019fb391d NFS: Label the dentry with a verifier in nfs_rmdir() and nfs_unlink()
After the success of an operation such as rmdir() or unlink(), we expect
to add the dentry back to the dcache as an ordinary negative dentry.
However in NFS, unless it is labelled with the appropriate verifier for
the parent directory state, then nfs_lookup_revalidate will end up
discarding that dentry and forcing a new lookup.

The fix is to ensure that we relabel the dentry appropriately on
success.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-03 20:49:05 -04:00
Trond Myklebust
342a67f088 NFS: Label the dentry with a verifier in nfs_link(), nfs_symlink()
After the success of an operation such as link(), or symlink(), we
expect to add the dentry back to the dcache as an ordinary positive
dentry.
However in NFS, unless it is labelled with the appropriate verifier for
the parent directory state, then nfs_lookup_revalidate will end up
discarding that dentry and forcing a new lookup.

The fix is to ensure that we relabel the dentry appropriately on
success.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-10-03 20:49:05 -04:00
Linus Torvalds
9e1ff307c7 Linux 5.15-rc4 2021-10-03 14:08:47 -07:00
Chen Jingwen
9b2f72cc0a elf: don't use MAP_FIXED_NOREPLACE for elf interpreter mappings
In commit b212921b13 ("elf: don't use MAP_FIXED_NOREPLACE for elf
executable mappings") we still leave MAP_FIXED_NOREPLACE in place for
load_elf_interp.

Unfortunately, this will cause kernel to fail to start with:

    1 (init): Uhuuh, elf segment at 00003ffff7ffd000 requested but the memory is mapped already
    Failed to execute /init (error -17)

The reason is that the elf interpreter (ld.so) has overlapping segments.

  readelf -l ld-2.31.so
  Program Headers:
    Type           Offset             VirtAddr           PhysAddr
                   FileSiz            MemSiz              Flags  Align
    LOAD           0x0000000000000000 0x0000000000000000 0x0000000000000000
                   0x000000000002c94c 0x000000000002c94c  R E    0x10000
    LOAD           0x000000000002dae0 0x000000000003dae0 0x000000000003dae0
                   0x00000000000021e8 0x0000000000002320  RW     0x10000
    LOAD           0x000000000002fe00 0x000000000003fe00 0x000000000003fe00
                   0x00000000000011ac 0x0000000000001328  RW     0x10000

The reason for this problem is the same as described in commit
ad55eac74f ("elf: enforce MAP_FIXED on overlaying elf segments").

Not only executable binaries, elf interpreters (e.g. ld.so) can have
overlapping elf segments, so we better drop MAP_FIXED_NOREPLACE and go
back to MAP_FIXED in load_elf_interp.

Fixes: 4ed2863951 ("fs, elf: drop MAP_FIXED usage from elf_map")
Cc: <stable@vger.kernel.org> # v4.19
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Chen Jingwen <chenjingwen6@huawei.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-10-03 14:02:58 -07:00
Linus Torvalds
ca3cef466f Fix a number of ext4 bugs in fast_commit, inline data, and delayed
allocation.  Also fix error handling code paths in ext4_dx_readdir()
 and ext4_fill_super().  Finally, avoid a grabbing a journal head in
 the delayed allocation write in the common cases where we are
 overwriting an pre-existing block or appending to an inode.
 -----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAmFZ2SsACgkQ8vlZVpUN
 gaN6DAgAkIeisL1EfQT0VwshEs8y7N6IoX8dydLSRLpNf5oWiJOv2CTY9Qpi6X/C
 qNfuLsbJ2NXChvhIAM2hD82hvX21rYc6iqPxgho02VF4eYIP7NzLjwTFKnKbHPB5
 TiF498nJTnkcmSrJUEXmSAEdLoCwa5THH9+9HVHXZrkLXPULBtOOJ85mDAcIzVhV
 Zqb7yfbpWl0gnF0S0YjNATPtbhcC9EiC4MOVYVesRlgT9B3+k5q4fmVU0euTU9OH
 F2H6TNG+Mg/19gTnDP5acB9+eXHvYEqMpe+CaDifR9iFE9PTG/Edhxr6z9roXhHr
 kBvEVHSFH+YTEJXghnpS9YDd9Lwc9w==
 =WKzd
 -----END PGP SIGNATURE-----

Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 fixes from Ted Ts'o:
 "Fix a number of ext4 bugs in fast_commit, inline data, and delayed
  allocation.

  Also fix error handling code paths in ext4_dx_readdir() and
  ext4_fill_super().

  Finally, avoid a grabbing a journal head in the delayed allocation
  write in the common cases where we are overwriting a pre-existing
  block or appending to an inode"

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: recheck buffer uptodate bit under buffer lock
  ext4: fix potential infinite loop in ext4_dx_readdir()
  ext4: flush s_error_work before journal destroy in ext4_fill_super
  ext4: fix loff_t overflow in ext4_max_bitmap_size()
  ext4: fix reserved space counter leakage
  ext4: limit the number of blocks in one ADD_RANGE TLV
  ext4: enforce buffer head state assertion in ext4_da_map_blocks
  ext4: remove extent cache entries when truncating inline data
  ext4: drop unnecessary journal handle in delalloc write
  ext4: factor out write end code of inline file
  ext4: correct the error path of ext4_write_inline_data_end()
  ext4: check and update i_disksize properly
  ext4: add error checking to ext4_ext_replay_set_iblocks()
2021-10-03 13:56:53 -07:00
Linus Torvalds
7fab1c12bd objtool: print out the symbol type when complaining about it
The objtool warning that the kvm instruction emulation code triggered
wasn't very useful:

    arch/x86/kvm/emulate.o: warning: objtool: __ex_table+0x4: don't know how to handle reloc symbol type: kvm_fastop_exception

in that it helpfully tells you which symbol name it had trouble figuring
out the relocation for, but it doesn't actually say what the unknown
symbol type was that triggered it all.

In this case it was because of missing type information (type 0, aka
STT_NOTYPE), but on the whole it really should just have printed that
out as part of the message.

Because if this warning triggers, that's very much the first thing you
want to know - why did reloc2sec_off() return failure for that symbol?

So rather than just saying you can't handle some type of symbol without
saying what the type _was_, just print out the type number too.

Fixes: 24ff652573 ("objtool: Teach get_alt_entry() about more relocation types")
Link: https://lore.kernel.org/lkml/CAHk-=wiZwq-0LknKhXN4M+T8jbxn_2i9mcKpO+OaBSSq_Eh7tg@mail.gmail.com/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-10-03 13:45:48 -07:00
Linus Torvalds
291073a566 kvm: fix objtool relocation warning
The recent change to make objtool aware of more symbol relocation types
(commit 24ff652573: "objtool: Teach get_alt_entry() about more
relocation types") also added another check, and resulted in this
objtool warning when building kvm on x86:

    arch/x86/kvm/emulate.o: warning: objtool: __ex_table+0x4: don't know how to handle reloc symbol type: kvm_fastop_exception

The reason seems to be that kvm_fastop_exception() is marked as a global
symbol, which causes the relocation to ke kept around for objtool.  And
at the same time, the kvm_fastop_exception definition (which is done as
an inline asm statement) doesn't actually set the type of the global,
which then makes objtool unhappy.

The minimal fix is to just not mark kvm_fastop_exception as being a
global symbol.  It's only used in that one compilation unit anyway, so
it was always pointless.  That's how all the other local exception table
labels are done.

I'm not entirely happy about the kinds of games that the kvm code plays
with doing its own exception handling, and the fact that it confused
objtool is most definitely a symptom of the code being a bit too subtle
and ad-hoc.  But at least this trivial one-liner makes objtool no longer
upset about what is going on.

Fixes: 24ff652573 ("objtool: Teach get_alt_entry() about more relocation types")
Link: https://lore.kernel.org/lkml/CAHk-=wiZwq-0LknKhXN4M+T8jbxn_2i9mcKpO+OaBSSq_Eh7tg@mail.gmail.com/
Cc: Borislav Petkov <bp@suse.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Wanpeng Li <wanpengli@tencent.com>
Cc: Jim Mattson <jmattson@google.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-10-03 13:34:19 -07:00
Linus Torvalds
6761a0ae98 Char/Misc driver fixes for 5.15-rc4
Here are some small misc driver fixes for 5.15-rc4.  They are in two
 "groups":
 	- ipack driver fixes for issues found by Johan Hovold
 	- interconnect driver fixes for reported problems
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYVmBlw8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ykD+gCdHWN6ccVCOjlJT057Pwd3ROQ7sxAAn0areAtI
 XqQJsKgeIaAxAkti5u+D
 =WLbS
 -----END PGP SIGNATURE-----

Merge tag 'char-misc-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some small misc driver fixes for 5.15-rc4. They are in two
  "groups":

   - ipack driver fixes for issues found by Johan Hovold

   - interconnect driver fixes for reported problems

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

* tag 'char-misc-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  ipack: ipoctal: fix module reference leak
  ipack: ipoctal: fix missing allocation-failure check
  ipack: ipoctal: fix tty-registration error handling
  ipack: ipoctal: fix tty registration race
  ipack: ipoctal: fix stack information leak
  interconnect: qcom: sdm660: Add missing a2noc qos clocks
  dt-bindings: interconnect: sdm660: Add missing a2noc qos clocks
  interconnect: qcom: sdm660: Correct NOC_QOS_PRIORITY shift and mask
  interconnect: qcom: sdm660: Fix id of slv_cnoc_mnoc_cfg
2021-10-03 11:19:02 -07:00
Linus Torvalds
84928ce3bb Driver core fixes for 5.15-rc4
Here are some driver core and kernfs fixes for reported issues for
 5.15-rc4.  These fixes include:
 	- kernfs positive dentry bugfix
 	- debugfs_create_file_size error path fix
 	- cpumask sysfs file bugfix to preserve the user/kernel abi (has
 	  been reported multiple times.)
 	- devlink fixes for mdiobus devices as reported by the subsystem
 	  maintainers.
 
 Also included in here are some devlink debugging changes to make it
 easier for people to report problems when asked.  They have already
 helped with the mdiobus and other subsystems reporting issues.
 
 All of these have been linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYVmC1A8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ykfCQCgtQ0kdPoPdUG6mPCn45rrbJQLBY4AnRL5JyhO
 zB60l6C2EHHnLnRxMnQq
 =gygB
 -----END PGP SIGNATURE-----

Merge tag 'driver-core-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg KH:
 "Here are some driver core and kernfs fixes for reported issues for
  5.15-rc4. These fixes include:

   - kernfs positive dentry bugfix

   - debugfs_create_file_size error path fix

   - cpumask sysfs file bugfix to preserve the user/kernel abi (has been
     reported multiple times.)

   - devlink fixes for mdiobus devices as reported by the subsystem
     maintainers.

  Also included in here are some devlink debugging changes to make it
  easier for people to report problems when asked. They have already
  helped with the mdiobus and other subsystems reporting issues.

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

* tag 'driver-core-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  kernfs: also call kernfs_set_rev() for positive dentry
  driver core: Add debug logs when fwnode links are added/deleted
  driver core: Create __fwnode_link_del() helper function
  driver core: Set deferred probe reason when deferred by driver core
  net: mdiobus: Set FWNODE_FLAG_NEEDS_CHILD_BOUND_ON_ADD for mdiobus parents
  driver core: fw_devlink: Add support for FWNODE_FLAG_NEEDS_CHILD_BOUND_ON_ADD
  driver core: fw_devlink: Improve handling of cyclic dependencies
  cpumask: Omit terminating null byte in cpumap_print_{list,bitmask}_to_buf
  debugfs: debugfs_create_file_size(): use IS_ERR to check for error
2021-10-03 11:10:09 -07:00
Linus Torvalds
777feabaea - Tell the compiler to always inline is_percpu_thread()
- Make sure tunable_scaling buffer is null-terminated after an update in sysfs
 
 - Fix LTP named regression due to cgroup list ordering
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmFZhRgACgkQEsHwGGHe
 VUq0lRAAqazsUL+j8UL5URX28/gVNtQye25pkVFvg16VRGk0qqHRyBikA165InhE
 btTbQb/Bd/YTU2ykKeBt+Cw4Zl+kWnvplXu2gxreQQhCjukSqe6OlQEjC0midnL0
 haOjIFERoxY5dTnwa8JuFJpCiKT5ltnLmudiOmCrUAVoANCg5ra8Yl+z6WJwsnFL
 EOXMj7tSRHZpinMjLzoF7kbID43dil4OjailrM6iR6+7/JzJNaXPG/IuVfEDnZM7
 2+WY+qijveD1PhZMHz5tIkDjYmfOSn1uyfeIklUKM/9dpp82TdwA2yptJ+/IRmvj
 vjn9ZCfpzWqXn0bf4RIvcK49MQQkJBXrg4EqZOJFXgT/6tXqr5BxSdTKnIkRBs+V
 zOc+zF/Y9OH5NH0DlELFtn7k2HMOO8DLOVrbOb+TixNPxbUFrbCJR5i9T7yecuQJ
 s+B+5aBmOZclNYehx1Hv8A9bjixWvp+UkGixLj1F4i6RYONS11M15bM94Cwyh1K9
 koHcZtVt1iQGkpYtV5fQAvxiKtIrAwkX4oniZzWbYr8ORQ269T/l5oeNNdzFxo7y
 qWkHWWIAG+A3dMUdJGbc8c7cInc4EK8tUzD8ec23cF74UO16cBgl/6tTGazyUrdA
 oxNTCuWPtvqp49eef3y02QONkRARfmEBnFYCqfFrEvEEh9OUQPU=
 =Kj5B
 -----END PGP SIGNATURE-----

Merge tag 'sched_urgent_for_v5.15_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fixes from Borislav Petkov:

 - Tell the compiler to always inline is_percpu_thread()

 - Make sure tunable_scaling buffer is null-terminated after an update
   in sysfs

 - Fix LTP named regression due to cgroup list ordering

* tag 'sched_urgent_for_v5.15_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched: Always inline is_percpu_thread()
  sched/fair: Null terminate buffer when updating tunable_scaling
  sched/fair: Add ancestors of unthrottled undecayed cfs_rq
2021-10-03 10:49:00 -07:00
Linus Torvalds
3a399a2bc4 - Make sure the destroy callback is reset when a event initialization fails
- Update the event constraints for Icelake
 
 - Make sure the active time of an event is updated even for inactive events
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmFZfZoACgkQEsHwGGHe
 VUqonA//SskDtPRTrbHoc1pDZEBOoYmuYZpsVIXMTcjxt8DkdGZcmgSRzJ53QdGT
 aOv+Oc7qIsOa7qcRPaUxlyjnqbWEynOmeHaIN2PtKebOKsXsvdf0ehrrOYjgoD5g
 1ENCisvV6TyyPtQPDv9QkYkGScZXg5/D8VyrlV5GsRj+MslWsfVWaJvUCHQtJcnz
 YPbcOFw1MHCBtUuJXtXuzA2JDp0Lfr6aX5Zl6hXqP8k69Y+Ob0bjA3jopo29l5rU
 lp/y4MQcFHuEAbQ7AdVeKg3Yi/RnSEI0w3HT1xDeKyXlMGp+Xz5rDBg1I+WREDri
 u7QuT9Mx6XSzGHGeg/Y5XbMN+M5WCQUxH5gJMLiduG0YYULWhq/j4f5tA0U0cQ80
 qVKRH8luh+0R+RLZtqno9pNg0pSdB47X8lqXOX0/DyAA7f6xPm17VBvyDeuF75AL
 vYuhdtu0vB5Iwsccj+h5cXGsaMWCzcriGABWZL/1JZFwRT8kRadiybJkv0n6R77F
 qDqUMu6cLM9kDhTeggDffoQZoxLiEL6pfeWFuWcaWdVXa8veX4lZZNnPFbqNhnJm
 zRm758r3jdHie1BAgFXym6Gt5EhkBhtofbUBaw3T2SdxFTs0csKzF5tzCXIvIyz2
 LH3Is3ce0pw+A72barhbLua2IJ2h895DGE529sQBiaSibB53tYk=
 =TQvw
 -----END PGP SIGNATURE-----

Merge tag 'perf_urgent_for_v5.15_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf fixes from Borislav Petkov:

 - Make sure the destroy callback is reset when a event initialization
   fails

 - Update the event constraints for Icelake

 - Make sure the active time of an event is updated even for inactive
   events

* tag 'perf_urgent_for_v5.15_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: fix userpage->time_enabled of inactive events
  perf/x86/intel: Update event constraints for ICX
  perf/x86: Reset destroy callback on event init failure
2021-10-03 10:32:27 -07:00
Linus Torvalds
52c3c17062 - Handle symbol relocations properly due to changes in the toolchains
which remove section symbols now
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmFZesIACgkQEsHwGGHe
 VUp3PhAAg6pe71fCCoO3Z30wwTpqEI9n4CV93Nj+L6xdNw2LhvKWuPVYee0eAYnW
 oMyMv82kWngAMDa55U4o4isvB3CK4yOcCLOk+Odtok/2xmjfL1NB4wGMsk0Zz7Pr
 Rf3gNcyc4/5d8njxPvxEx4jj4thXm//vIKYpoeMXYdMoSGOT1p3w/DVBB2LhneZf
 7ygEH0zTmX75Nxfc9YFZSwXweg1sB6vz0sK0fXPb/BF547y0qyplPRKhK8BOLLCe
 LAN15cxdV0/Su3Wcu59aguzuwDGa3N7GGIa1Lbsg6rxXgMwOzVY6fzk1edCvFnOo
 ro+19jm+riDJGBJUCfi0O8JzTXY2gEBxDACvMDkUtKkONxpeet+mWS3CmFOMqQM4
 0z6C052//vJd6grqDzzy1nb151bW4lU/RrDNrcihA99rVtmfe249xVzniIgR5zAy
 Tzezu+DgCZnN5Os/dLFoMOKTrRqGfqJ/yGNjs9KSgN2Lwe6SmKkVmrNL/i0KIwgd
 4sIh+nXhMerZaR/GAPcazEBR3yUvCtKDMmtNYpzxfVo+JRtNUolvlglPpzxE3e0t
 gOjnqrf1/wutYzJ65xpa4h7JjTtXCwey/83JdY2f463kid2+t94mYpp9wirooY23
 yfv+wTyECcMrlP+p0tTdrMD8mD9m0Cxo96vMVqfT5ER8g4CwiTo=
 =Buve
 -----END PGP SIGNATURE-----

Merge tag 'objtool_urgent_for_v5.15_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool fix from Borislav Petkov:

 - Handle symbol relocations properly due to changes in the toolchains
   which remove section symbols now

* tag 'objtool_urgent_for_v5.15_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Teach get_alt_entry() about more relocation types
2021-10-03 10:23:54 -07:00
Linus Torvalds
7b66f4393a hwmon fixes for v5.15-rc4
- Fixed various potential NULL pointer accesses in w8379* drivers
 - Improved error handling, fault reporting, and fixed rounding in thmp421 driver
 - Fixed error handling in ltc2947 driver
 - Added missing attribute to pmbus/mp2975 driver
 - Fixed attribute values in pbus/ibm-cffps, occ, and mlxreg-fan drivers
 - Removed unused residual code from k10temp driver
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEiHPvMQj9QTOCiqgVyx8mb86fmYEFAmFYTsYACgkQyx8mb86f
 mYEhGxAAn1qNVVJASyu/oO5sNpFOAoqapR2D1njPoP+vrE2ac+Brk129LKn6SC7h
 7ngY+5aJfsPlsDTWDyAahqRsdI29hMJE5RobNiGgifqnrSoBwQzqbKDaHwqOfzO1
 GUiJy3EVSb4Fo/haTtdcUmlxW7km7nGqTAksdOLNpq1vArcMdVjAoCRjEEgerq0g
 Xyb211D10s6PxiUeqAQl7AMqPlAfsCLNtBTclQP1aSDrurvu6qRWAChSzYlHeL5W
 pliSt6N1INQGM0vrVvow/t/ILW7ISDVIQzENZRAMGIPlIYdqclEhsYY3oFCiV2FP
 aX/L0TAk0wQovkdoCF2qfPpuImFh89O4U1L+0AqNtSUcx978QX5gPykYjQlpHXTb
 EFqgWwHC/yX9xXA/iEC/c+MbjxhbBoLsyiOCHqdT0n6C5+iCYPuKOb9vZ7mEP860
 fHYuv8BijN1foQxStRWpDu64eiU6ELP6D+VuAzzhgW7/wkT/4sj2bJ0CoVqSQpjZ
 FEFtk3gIxIjqJRAhTgkAbGEfB8x+hSTNtBVXFN/xX88a6QCfu/aBaadFtsXX/rr1
 tpK6SfVxSPfQJefJ7W4VYGyLWk/ghFRfGK2nbVWeyMhFfPAlPAk62AebgeOpmIRv
 Ny11mwglOJ711OD8i/yfPbbX5rrghIVe1NNnL3Ol4zCjPj7yEKk=
 =o700
 -----END PGP SIGNATURE-----

Merge tag 'hwmon-for-v5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - Fixed various potential NULL pointer accesses in w8379* drivers

 - Improved error handling, fault reporting, and fixed rounding in
   thmp421 driver

 - Fixed error handling in ltc2947 driver

 - Added missing attribute to pmbus/mp2975 driver

 - Fixed attribute values in pbus/ibm-cffps, occ, and mlxreg-fan
   drivers

 - Removed unused residual code from k10temp driver

* tag 'hwmon-for-v5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (w83793) Fix NULL pointer dereference by removing unnecessary structure field
  hwmon: (w83792d) Fix NULL pointer dereference by removing unnecessary structure field
  hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field
  hwmon: (pmbus/mp2975) Add missed POUT attribute for page 1 mp2975 controller
  hwmon: (pmbus/ibm-cffps) max_power_out swap changes
  hwmon: (occ) Fix P10 VRM temp sensors
  hwmon: (ltc2947) Properly handle errors when looking for the external clock
  hwmon: (tmp421) fix rounding for negative values
  hwmon: (tmp421) report /PVLD condition as fault
  hwmon: (tmp421) handle I2C errors
  hwmon: (mlxreg-fan) Return non-zero value when fan current state is enforced from sysfs
  hwmon: (k10temp) Remove residues of current and voltage
2021-10-02 17:51:01 -07:00
Linus Torvalds
e25ca045c3 Eleven fixes for the ksmbd kernel server, including an important fix disabling weak NTLMv1 authentication, and seven security (improved buffer overflow checks) fixes
-----BEGIN PGP SIGNATURE-----
 
 iQGzBAABCgAdFiEE6fsu8pdIjtWE/DpLiiy9cAdyT1EFAmFXwIYACgkQiiy9cAdy
 T1EWfQv/fSSoymQpFZrnzd0ELS7J14IvPbjpL5wWLWUdtrHLIk5Fcg1rxNXDZVsY
 o932TGAo/X3qEgMXWbD812Q4MoB+Rupj0NmHReLL+UxwrgCHexFVnzr0SH0YQfWA
 59xa+2BVzInqnejika1H4HewJqGKt6npGiAg0Rzx+nJiFlX0CAPupW8oC90UM5Co
 3vJNG4orZILlGLRIdMpSashW8Z5dbXY95k/VqF/vYqHgfy37L1m+pDCjRjEbXtFY
 fuqFGeAcsnRWnu6ECvuujTyh+hQMSdwb/5F6uovVUrdChdvbfWi+rjtHDx0HpD2t
 UKMnRQPk/BWD1/6zFriObCt4QDpufZdvLlVNyir4BdIT2OhzkwkZ4qXz/du+IWKm
 4/4nYEaD2lFN4pEAy73NGGt9eJrAjbnaswNDPTZIDpJ7IyZiakDFjOD8iLFncBS7
 xL6hUcMvc4njaqxcB9LHFZ8w67cjwR5aw0+wr8DKfCh13lJgSvxoXEP/D+4fxINv
 QULcIhF/
 =X733
 -----END PGP SIGNATURE-----

Merge tag '5.15-rc3-ksmbd-fixes' of git://git.samba.org/ksmbd

Pull ksmbd server fixes from Steve French:
 "Eleven fixes for the ksmbd kernel server, mostly security related:

   - an important fix for disabling weak NTLMv1 authentication

   - seven security (improved buffer overflow checks) fixes

   - fix for wrong infolevel struct used in some getattr/setattr paths

   - two small documentation fixes"

* tag '5.15-rc3-ksmbd-fixes' of git://git.samba.org/ksmbd:
  ksmbd: missing check for NULL in convert_to_nt_pathname()
  ksmbd: fix transform header validation
  ksmbd: add buffer validation for SMB2_CREATE_CONTEXT
  ksmbd: add validation in smb2 negotiate
  ksmbd: add request buffer validation in smb2_set_info
  ksmbd: use correct basic info level in set_file_basic_info()
  ksmbd: remove NTLMv1 authentication
  ksmbd: fix documentation for 2 functions
  MAINTAINERS: rename cifs_common to smbfs_common in cifs and ksmbd entry
  ksmbd: fix invalid request buffer access in compound
  ksmbd: remove RFC1002 check in smb2 request
2021-10-02 17:43:54 -07:00
Linus Torvalds
9904468fb0 SCSI fixes on 20211002
Five fairly minor fixes and spelling updates, all in drivers.  Even
 though the ufs fix is in tracing, it's a potentially exploitable use
 beyond end of array bug.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
 -----BEGIN PGP SIGNATURE-----
 
 iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCYVithCYcamFtZXMuYm90
 dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pisheg2AQCIEeRe
 aLd9ZK8brXzB9b1EApCPgpWKGhF217P/TWPuTgEAoZRJZWJ3jD/yzCke/IyF62+x
 LuYiCR2yTMhsTCIGodM=
 =6v3Q
 -----END PGP SIGNATURE-----

Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Five fairly minor fixes and spelling updates, all in drivers. Even
  though the ufs fix is in tracing, it's a potentially exploitable use
  beyond end of array bug"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: csiostor: Add module softdep on cxgb4
  scsi: qla2xxx: Fix excessive messages during device logout
  scsi: virtio_scsi: Fix spelling mistake "Unsupport" -> "Unsupported"
  scsi: ses: Fix unsigned comparison with less than zero
  scsi: ufs: Fix illegal offset in UPIU event trace
2021-10-02 12:56:03 -07:00
Linus Torvalds
ab2a7a35c4 block-5.15-2021-10-01
-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmFXvGIQHGF4Ym9lQGtl
 cm5lbC5kawAKCRD301j7KXHgprAgD/9WKQIVPyzXC3Ui8OkSb9DM+dnU47+4b6sL
 Naud4khgrvMjTIdZC9YjwAhKBRNsXbcTXRLbBsxVzk7HhGI31jR711qaOZ/jMRbc
 dPwcpF82/Yr8BlIl5i3SBvxFNW8FAJWLTVvPvJXSjUBPECTgY6MnchojOjYz1CrN
 a0TmtHs5Feu+nLyzKgQlPMv3P8tvrS1hQNpfvbK1oWeEQuyONGacK82nl853ak30
 c0uywVsvO+yiBY2xWhiTqperbPwnLxCYOMOdBqbNvlPlGIkEbkW1YWhm2/5f3vRi
 37C3ibmt2SCnJaAyiNUKrYSTCK9BoeWFqtxVwyGB8WxWsUXrdocEOoBdohxDHrcp
 gHIqxPVUD2hyEroRQseq4NTvERkRvOiF4jAFA3lHOw5zLtPGNEvC0EUFRMm3Ur3/
 DyviDBPy321pvrbqGg5uIL3o6wuXDQNnwxdXa2wElWDLuTYp8tB25rqAe2IRJ+iS
 k32AsgfL+y5fhjsA6ros/hpQ6FQTAKSW3i6S/0L+QB6H0jYb1ue9JPrA+3MoizvI
 p+PdmpLeFVQxnfthT2J+6pzQADoxcMwg5ALgyLFvhhL1YAqyhHkKgdAIS3gKXxYm
 GbQLd2hkv7wPZHEsS/XiGCj+zzyawjsr5hSHRqkbZ1QlyfnuTz5uI65WzST68o4d
 KOAvQTx4aQ==
 =SMoX
 -----END PGP SIGNATURE-----

Merge tag 'block-5.15-2021-10-01' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A few block fixes for this release:

   - Revert a BFQ commit that causes breakage for people. Unfortunately
     it was auto-selected for stable as well, so now 5.14.7 suffers from
     it too. Hopefully stable will pick up this revert quickly too, so
     we can remove the issue on that end as well.

   - Add a quirk for Apple NVMe controllers, which due to their
     non-compliance broke due to the introduction of command sequences
     (Keith)

   - Use shifts in nbd, fixing a __divdi3 issue (Nick)"

* tag 'block-5.15-2021-10-01' of git://git.kernel.dk/linux-block:
  nbd: use shifts rather than multiplies
  Revert "block, bfq: honor already-setup queue merges"
  nvme: add command id quirk for apple controllers
2021-10-02 11:00:36 -07:00
Linus Torvalds
65893b49d8 io_uring-5.15-2021-10-01
-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmFXvEwQHGF4Ym9lQGtl
 cm5lbC5kawAKCRD301j7KXHgpjALD/4/SZyJD+VcPM5Zx7kp2JMLm5GM6ZFnRTpI
 ZZoRsWnKZ39AAXS4GvGWGb+lEqI7LkLUy0SeUWbK2G3TIdKDU1Sza15knie3uzQ0
 Np/No3kv/2vl49gY64A/IVhcqDaHCVXZjRLe2cIK6kULmEH5AwNuTMvYS84g0+38
 XCDaWqzGbwTvtJ1RBjxlvXwl9EpmLwY+fr57KOxRgjIvfe68vZcSQBKPVJro3uUS
 2toSfiZuRIBk8pIwZ+WCnEv0zbvicjaQVFL6kGpANO4zMsBfkgjeB2Bz+sS8vtfB
 pQ1RR24cl3vtoGwYOLOBeVMxyaekkBxruXYmOogRNLq0Uq+EHJn2Wu0ifvk5dw9u
 yMXFUEC2TPPV4ah8lFRkVmU6bVeOVmaTn/Yp2nQRR830PkZVNST4vcXeJTNpHa2k
 b2uKPCJlkQzpq1ea29FbJ6RN/IrTOcTog+RWKXF4A3PMEkdUPP64a/lFtmMbIu9S
 mg00P1d3qA6rmrOX+Igw6zbtxyEn1pVEjexFfi49dQMM1wphpQPOHq3EgcQi/UDM
 SbKo6f6RsYDhlte8YVz70KSjW1HwTbepm4z6Zuts7Lbbbu1LUJrO9yf/LMEIJxaH
 no2fv82BPTSHUqWh0aqiVW+2DthaX3oZtQe6HpK2+SpV+Rre/RktnEFTN2JuSNYI
 DzCNRAJa+A==
 =qP3G
 -----END PGP SIGNATURE-----

Merge tag 'io_uring-5.15-2021-10-01' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "Two fixes in here:

   - The signal issue that was discussed start of this week (me).

   - Kill dead fasync support in io_uring. Looks like it was broken
     since io_uring was initially merged, and given that nobody has ever
     complained about it, let's just kill it (Pavel)"

* tag 'io_uring-5.15-2021-10-01' of git://git.kernel.dk/linux-block:
  io_uring: kill fasync
  io-wq: exclusively gate signal based exit on get_signal() return
2021-10-02 10:26:19 -07:00
Linus Torvalds
f05c643743 libnvdimm fixes for v5.15-rc4
- Fix a regression that caused the sysfs ABI for pmem block devices to
   not be registered. This fails the nvdimm unit tests and dax xfstests.
 
 - Fix numa node lookups for dax-kmem memory (device-dax memory assigned
   to the page allocator) on ARM64.
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQSbo+XnGs+rwLz9XGXfioYZHlFsZwUCYVeyFQAKCRDfioYZHlFs
 Zx/DAQDU2nQV86dYV4jl5ivNedcG8OMafSXMeSdB8E4kIGMG6gD/UaslrwSnCUO1
 LIZZ00ubfV9vySZl5NJ5I7yvkXcj1gU=
 =P2BW
 -----END PGP SIGNATURE-----

Merge tag 'libnvdimm-fixes-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm fixes from Dan Williams:
 "A fix for a regression added this cycle in the pmem driver, and for a
  long standing bug for failed NUMA node lookups on ARM64.

  This has appeared in -next for several days with no reported issues.

  Summary:

   - Fix a regression that caused the sysfs ABI for pmem block devices
     to not be registered. This fails the nvdimm unit tests and dax
     xfstests.

   - Fix numa node lookups for dax-kmem memory (device-dax memory
     assigned to the page allocator) on ARM64"

* tag 'libnvdimm-fixes-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  nvdimm/pmem: fix creating the dax group
  ACPI: NFIT: Use fallback node id when numa info in NFIT table is incorrect
2021-10-02 10:08:35 -07:00
Dave Wysochanski
6e9bfdcf0a cachefiles: Fix oops in trace_cachefiles_mark_buried due to NULL object
In cachefiles_mark_object_buried, the dentry in question may not have an
owner, and thus our cachefiles_object pointer may be NULL when calling
the tracepoint, in which case we will also not have a valid debug_id to
print in the tracepoint.

Check for NULL object in the tracepoint and if so, just set debug_id to
MAX_UINT as was done in 2908f5e101 ("fscache: Add a cookie debug ID
and use that in traces").

This fixes the following oops:

    FS-Cache: Cache "mycache" added (type cachefiles)
    CacheFiles: File cache on vdc registered
    ...
    Workqueue: fscache_object fscache_object_work_func [fscache]
    RIP: 0010:trace_event_raw_event_cachefiles_mark_buried+0x4e/0xa0 [cachefiles]
    ....
    Call Trace:
     cachefiles_mark_object_buried+0xa5/0xb0 [cachefiles]
     cachefiles_bury_object+0x270/0x430 [cachefiles]
     cachefiles_walk_to_object+0x195/0x9c0 [cachefiles]
     cachefiles_lookup_object+0x5a/0xc0 [cachefiles]
     fscache_look_up_object+0xd7/0x160 [fscache]
     fscache_object_work_func+0xb2/0x340 [fscache]
     process_one_work+0x1f1/0x390
     worker_thread+0x53/0x3e0
     kthread+0x127/0x150

Fixes: 2908f5e101 ("fscache: Add a cookie debug ID and use that in traces")
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-cachefs@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-10-02 10:03:28 -07:00
Hugh Dickins
cdc1e6e225 drm/i915: fix blank screen booting crashes
5.15-rc1 crashes with blank screen when booting up on two ThinkPads
using i915.  Bisections converge convincingly, but arrive at different
and suprising "culprits", none of them the actual culprit.

netconsole (with init_netconsole() hacked to call i915_init() when
logging has started, instead of by module_init()) tells the story:

kernel BUG at drivers/gpu/drm/i915/i915_sw_fence.c:245!
with RSI: ffffffff814d408b pointing to sw_fence_dummy_notify().
I've been building with CONFIG_CC_OPTIMIZE_FOR_SIZE=y, and that
function needs to be 4-byte aligned.

Fixes: 62eaf0ae21 ("drm/i915/guc: Support request cancellation")
Signed-off-by: Hugh Dickins <hughd@google.com>
Tested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-10-02 09:39:15 -07:00
Nadezda Lutovinova
dd4d747ef0 hwmon: (w83793) Fix NULL pointer dereference by removing unnecessary structure field
If driver read tmp value sufficient for
(tmp & 0x08) && (!(tmp & 0x80)) && ((tmp & 0x7) == ((tmp >> 4) & 0x7))
from device then Null pointer dereference occurs.
(It is possible if tmp = 0b0xyz1xyz, where same literals mean same numbers)
Also lm75[] does not serve a purpose anymore after switching to
devm_i2c_new_dummy_device() in w83791d_detect_subclients().

The patch fixes possible NULL pointer dereference by removing lm75[].

Found by Linux Driver Verification project (linuxtesting.org).

Cc: stable@vger.kernel.org
Signed-off-by: Nadezda Lutovinova <lutovinova@ispras.ru>
Link: https://lore.kernel.org/r/20210921155153.28098-3-lutovinova@ispras.ru
[groeck: Dropped unnecessary continuation lines, fixed multi-line alignments]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2021-10-02 05:14:11 -07:00
Nadezda Lutovinova
0f36b88173 hwmon: (w83792d) Fix NULL pointer dereference by removing unnecessary structure field
If driver read val value sufficient for
(val & 0x08) && (!(val & 0x80)) && ((val & 0x7) == ((val >> 4) & 0x7))
from device then Null pointer dereference occurs.
(It is possible if tmp = 0b0xyz1xyz, where same literals mean same numbers)
Also lm75[] does not serve a purpose anymore after switching to
devm_i2c_new_dummy_device() in w83791d_detect_subclients().

The patch fixes possible NULL pointer dereference by removing lm75[].

Found by Linux Driver Verification project (linuxtesting.org).

Cc: stable@vger.kernel.org
Signed-off-by: Nadezda Lutovinova <lutovinova@ispras.ru>
Link: https://lore.kernel.org/r/20210921155153.28098-2-lutovinova@ispras.ru
[groeck: Dropped unnecessary continuation lines, fixed multipline alignment]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2021-10-02 05:12:05 -07:00
Nadezda Lutovinova
943c15ac1b hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field
If driver read val value sufficient for
(val & 0x08) && (!(val & 0x80)) && ((val & 0x7) == ((val >> 4) & 0x7))
from device then Null pointer dereference occurs.
(It is possible if tmp = 0b0xyz1xyz, where same literals mean same numbers)
Also lm75[] does not serve a purpose anymore after switching to
devm_i2c_new_dummy_device() in w83791d_detect_subclients().

The patch fixes possible NULL pointer dereference by removing lm75[].

Found by Linux Driver Verification project (linuxtesting.org).

Cc: stable@vger.kernel.org
Signed-off-by: Nadezda Lutovinova <lutovinova@ispras.ru>
Link: https://lore.kernel.org/r/20210921155153.28098-1-lutovinova@ispras.ru
[groeck: Dropped unnecessary continuation lines, fixed multi-line alignment]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2021-10-02 05:11:52 -07:00
Vadim Pasternak
2292e2f685 hwmon: (pmbus/mp2975) Add missed POUT attribute for page 1 mp2975 controller
Add missed attribute for reading POUT from page 1.
It is supported by device, but has been missed in initial commit.

Fixes: 2c6fcbb211 ("hwmon: (pmbus) Add support for MPS Multi-phase mp2975 controller")
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20210927070740.2149290-1-vadimp@nvidia.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2021-10-02 04:45:49 -07:00
Brandon Wyman
f067d5585c hwmon: (pmbus/ibm-cffps) max_power_out swap changes
The bytes for max_power_out from the ibm-cffps devices differ in byte
order for some power supplies.

The Witherspoon power supply returns the bytes in MSB/LSB order.

The Rainier power supply returns the bytes in LSB/MSB order.

The Witherspoon power supply uses version cffps1. The Rainier power
supply should use version cffps2. If version is cffps1, swap the bytes
before output to max_power_out.

Tested:
    Witherspoon before: 3148. Witherspoon after: 3148.
    Rainier before: 53255. Rainier after: 2000.

Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
Reviewed-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20210928205051.1222815-1-bjwyman@gmail.com
[groeck: Replaced yoda programming]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2021-10-02 04:38:53 -07:00
Eddie James
ffa2600044 hwmon: (occ) Fix P10 VRM temp sensors
The P10 (temp sensor version 0x10) doesn't do the same VRM status
reporting that was used on P9. It just reports the temperature, so
drop the check for VRM fru type in the sysfs show function, and don't
set the name to "alarm".

Fixes: db4919ec86 ("hwmon: (occ) Add new temperature sensor type")
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20210929153604.14968-1-eajames@linux.ibm.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2021-10-02 04:35:09 -07:00
Linus Torvalds
53d5fc89d6 s390 updates for 5.15-rc4
- Avoid CIO excessive path-verification requests, which might cause
   unwanted delays.
 -----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAmFXa4kACgkQjYWKoQLX
 FBgAGgf/RTS6wpGohA0BCq8TiCfO0T4iulIkkIgth2RD5dRPAUAfETyg2STNW6jM
 o2qR7W+gvVXKIf3M803Va05GLwKiWLovcbI4psxB+4XOaqRUsDWm6GhB+sqkLwV6
 cmE7KGD79aA6LShSqbr8GIiW56M0NoBy1WYn5nZiTbLST/J96tiabun1cnO79P2r
 zMMKuHDaHOG3sS7HCjNd9NUzVDuwYPnd8fwVc76TDutusY0KD7J3n7EuSHEj3G/5
 fb0h51YXAO2NGrs20ylyh6s5TFMLnBFPykrLE6ugjH9OyoA5WHh3ior7B+GFhz+e
 +U/AF4KCOzSNo9Z1Ul+Bmp6uw7lmUw==
 =BHKD
 -----END PGP SIGNATURE-----

Merge tag 's390-5.15-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 fix from Vasily Gorbik:
 "One fix for 5.15-rc4: Avoid CIO excessive path-verification requests,
  which might cause unwanted delays"

* tag 's390-5.15-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/cio: avoid excessive path-verification requests
2021-10-01 14:45:23 -07:00
Rafael J. Wysocki
f5b667ded0 thermal: Update information in MAINTAINERS
Because Rui is now going to focus on work that is not related to the
maintenance of the thermal subsystem in the kernel, Rafael will start
to help Daniel with handling the development process as a new member
of the thermal maintainers team.  Rui will continue to review patches
in that area.

The thermal development process flow will change so that the material
from the thermal git tree will be merged into the thermal branch of
the linux-pm.git tree before going into the mainline.

Update the information in MAINTAINERS accordingly.

Signed-off-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-10-01 11:26:51 -07:00
Linus Torvalds
b2626f1e32 Small x86 fixes.
-----BEGIN PGP SIGNATURE-----
 
 iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmFXQUoUHHBib256aW5p
 QHJlZGhhdC5jb20ACgkQv/vSX3jHroMglgf/egh3zb9/+BUQWe0xWfhcINNzpsVk
 PJtiBmJc3nQLbZbTSLp63rouy1lNgR0s2DiMwP7G1u39OwW8W3LHMrBUSqF1F01+
 gntb4GGiRTiTPJI64K4z6ytORd3tuRarHq8TUIa2zvki9ZW5Obgkm1i1RsNMOo+s
 AOA7whhpS8e/a5fBbtbS9bTZb30PKTZmbW4oMjvO9Sw4Eb76IauqPSEtRPSuCAc7
 r7z62RTlm10Qk0JR3tW1iXMxTJHZk+tYPJ8pclUAWVX5bZqWa/9k8R0Z5i/miFiZ
 glW/y3R4+aUwIQV2v7V3Jx9MOKDhZxniMtnqZG/Hp9NVDtWIz37V/U37vw==
 =zQQ1
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull more kvm fixes from Paolo Bonzini:
 "Small x86 fixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: selftests: Ensure all migrations are performed when test is affined
  KVM: x86: Swap order of CPUID entry "index" vs. "significant flag" checks
  ptp: Fix ptp_kvm_getcrosststamp issue for x86 ptp_kvm
  x86/kvmclock: Move this_cpu_pvti into kvmclock.h
  selftests: KVM: Don't clobber XMM register when read
  KVM: VMX: Fix a TSX_CTRL_CPUID_CLEAR field mask issue
2021-10-01 11:08:07 -07:00
Linus Torvalds
24f67d82c4 drm fixes for -rc4:
amdgpu, i915, tegra, and one exynos driver fix
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEb4nG6jLu8Y5XI+PfTA9ye/CYqnEFAmFXPSsACgkQTA9ye/CY
 qnG2FA//U/5l+IGl1sl/8/dPx8kQD2O5pthkTiiKMZm1iL8ZKlFklLKg0l5aGxej
 XhfkYuqdiDxS+JOYAOeeSILKzyAtinCT+GZ2o1k4Ip1cC7Eh01QRu4hcjT7CbYdf
 sUwQq/6uCBIaMr3Fxp0FPCUdKFjGBolomkFM8wgMusm1zRh5puJTgenSdxTkQKDB
 HqPfMX2bgn9hbp0uEbU2GY6Z4LJrOUQ4axM4uwOUrwm5nUkmVBNfaHEaONoUmlMd
 tU8/R3bD4s7++ZuyHGqpVG3iqfx08+GdJrnhKSNo4v1t/agT0AMEinZlerkkn+0B
 5F5Dv6dOKtGwheldSTEG0K+POEfqGKgL+6H53C64NUDEUIGF0OJ1Dq16TlESe8dD
 pwtGsM2N5Z0t3R72ktyPbbTBUwok/Ek0J7sPu52i4nlEKs4bRa1XTB+XI10yBQ8C
 6DczMw1TWmaqDtWuVr7ucrhfe0NeCOQo7d9G2QiK2w4aEFM6I4z1rxpCuhpZpuXp
 +j8jZa8AlGfExEnclghIxKsaEqgdCfXGj0Qi6SzXLADEMyxXFRx6rVozVzKCoCdq
 RgRjifwfJWqp3URYBEFulxNtb3gm4ilq+pHL08GwRiHUDbsMhoVZBq4Uyzh9IFnR
 DUIB0yo209+QtJgz4/R5K8IhkTYeGUJhSQOsOi4MQYHlWxn2SWI=
 =VY9u
 -----END PGP SIGNATURE-----

Merge tag 'drm-fixes-2021-10-01' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Daniel Vetter:
 "Dave is out on a long w/e, should be back next week.

  Nothing nefarious, just a bunch of driver fixes: amdgpu, i915, tegra,
  and one exynos driver fix"

* tag 'drm-fixes-2021-10-01' of git://anongit.freedesktop.org/drm/drm:
  drm/amdgpu: force exit gfxoff on sdma resume for rmb s0ix
  drm/amdgpu: check tiling flags when creating FB on GFX8-
  drm/amd/display: Pass PCI deviceid into DC
  drm/amd/display: initialize backlight_ramping_override to false
  drm/amdgpu: correct initial cp_hqd_quantum for gfx9
  drm/amd/display: Fix Display Flicker on embedded panels
  drm/amdgpu: fix gart.bo pin_count leak
  drm/i915: Remove warning from the rps worker
  drm/i915/request: fix early tracepoints
  drm/i915/guc, docs: Fix pdfdocs build error by removing nested grid
  gpu: host1x: Plug potential memory leak
  gpu/host1x: fence: Make spinlock static
  drm/tegra: uapi: Fix wrong mapping end address in case of disabled IOMMU
  drm/tegra: dc: Remove unused variables
  drm/exynos: Make use of the helper function devm_platform_ioremap_resource()
  drm/i915/gvt: fix the usage of ww lock in gvt scheduler.
2021-10-01 10:27:44 -07:00