Reorganize struct xchk_btree so that we can dynamically size the context
structure to fit the type of btree cursor that we have. This will
enable us to use memory more efficiently once we start adding very tall
btree types. Right-size the lastkey array to match the number of *node*
levels in the tree so that we stop wasting space.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
The btree scrubbing code checks that the records (or keys) that it finds
in a btree block are all in order by calling the btree cursor's
->recs_inorder function. This of course makes no sense for the first
item in the block, so we switch that off with a separate variable in
struct xchk_btree.
Christoph helped me figure out that the variable is unnecessary, since
we just accessed bc_ptrs[level] and can compare that against zero. Use
that, and save ourselves some memory space.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
We're never going to run more than 4 billion btree operations on a
refcount cursor, so shrink the field to an unsigned int to reduce the
structure size. Fix whitespace alignment too.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
During review of subsequent patches, Dave and I noticed that this
function doesn't work quite right -- accessing cur->bc_ino depends on
the ROOT_IN_INODE flag, not LONG_PTRS. Fix that and the parentheses
isssue. While we're at it, remove the piece that accesses cur->bc_ag,
because block 0 of an AG is never part of a btree.
Note: This changes the btree scrubber tracepoints behavior -- if the
cursor has no buffer for a certain level, it will always report
NULLFSBLOCK. It is assumed that anyone tracing the online fsck code
will also be tracing xchk_start/xchk_done or otherwise be aware of what
exactly is being scrubbed.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
The for_each_perag*() set of macros are hacky in that some (i.e.
those based on sb_agcount) rely on the assumption that perag
iteration terminates naturally with a NULL perag at the specified
end_agno. Others allow for the final AG to have a valid perag and
require the calling function to clean up any potential leftover
xfs_perag reference on termination of the loop.
Aside from providing a subtly inconsistent interface, the former
variant is racy with growfs because growfs can create discoverable
post-eofs perags before the final superblock update that completes
the grow operation and increases sb_agcount. This leads to the
following assert failure (reproduced by xfs/104) in the perag free
path during unmount:
XFS: Assertion failed: atomic_read(&pag->pag_ref) == 0, file: fs/xfs/libxfs/xfs_ag.c, line: 195
This occurs because one of the many for_each_perag() loops in the
code that is expected to terminate with a NULL pag (and thus has no
post-loop xfs_perag_put() check) raced with a growfs and found a
non-NULL post-EOFS perag, but terminated naturally based on the
end_agno check without releasing the post-EOFS perag.
Rework the iteration logic to lift the agno check from the main for
loop conditional to the iteration helper function. The for loop now
purely terminates on a NULL pag and xfs_perag_next() avoids taking a
reference to any perag beyond end_agno in the first place.
Fixes: f250eedcf7 ("xfs: make for_each_perag... a first class citizen")
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
The for_each_perag_from() iteration macro relies on sb_agcount to
process every perag currently within EOFS from a given starting
point. It's perfectly valid to have perag structures beyond
sb_agcount, however, such as if a growfs is in progress. If a perag
loop happens to race with growfs in this manner, it will actually
attempt to process the post-EOFS perag where ->pag_agno ==
sb_agcount. This is reproduced by xfs/104 and manifests as the
following assert failure in superblock write verifier context:
XFS: Assertion failed: agno < mp->m_sb.sb_agcount, file: fs/xfs/libxfs/xfs_types.c, line: 22
Update the corresponding macro to only process perags that are
within the current sb_agcount.
Fixes: 58d43a7e32 ("xfs: pass perags around in fsmap data dev functions")
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Rename the next_agno variable to be consistent across the several
iteration macros and shorten line length.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Fold the loop iteration logic into a helper in preparation for
further fixups. No functional change in this patch.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
coccicheck complains about the use of snprintf() in sysfs show functions.
Fix the coccicheck warning:
WARNING: use scnprintf or sprintf.
Use sysfs_emit instead of scnprintf or sprintf makes more sense.
Signed-off-by: Qing Wang <wangqing@vivo.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Remove the few leftover instances of the xfs_dinode_t typedef.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Remove the few leftover instances of the xfs_dinode_t typedef.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Remove the few leftover instances of the xfs_dinode_t typedef.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Warn if we ever bump nlevels higher than the allowed maximum cursor
height.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
When we're scanning for btree roots to rebuild the AG headers, make sure
that the proposed tree does not exceed the maximum height for that btree
type (and not just XFS_BTREE_MAXLEVELS).
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
Since each btree type has its own precomputed maxlevels variable now,
use them instead of the generic XFS_BTREE_MAXLEVELS to check the level
of each per-AG btree.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
Convert the on-stack scrub context, btree scrub context, and da btree
scrub context into a heap allocation so that we reduce stack usage and
gain the ability to handle tall btrees without issue.
Specifically, this saves us ~208 bytes for the dabtree scrub, ~464 bytes
for the btree scrub, and ~200 bytes for the main scrub context.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Get rid of this old typedef before we start changing other things.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
The btree geometry computation function has an off-by-one error in that
it does not allow maximally tall btrees (nlevels == XFS_BTREE_MAXLEVELS).
This can result in repairs failing unnecessarily on very fragmented
filesystems. Subsequent patches to remove MAXLEVELS usage in favor of
the per-btree type computations will make this a much more likely
occurrence.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
When log recovery tries to recover a transaction that had log intent
items attached to it, it has to save certain parts of the transaction
state (reservation, dfops chain, inodes with no automatic unlock) so
that it can finish single-stepping the recovered transactions before
finishing the chains.
This is done with the xfs_defer_ops_capture and xfs_defer_ops_continue
functions. Right now they open-code this functionality, so let's port
this to the formalized resource capture structure that we introduced in
the previous patch. This enables us to hold up to two inodes and two
buffers during log recovery, the same way we do for regular runtime.
With this patch applied, we'll be ready to support atomic extent swap
which holds two inodes; and logged xattrs which holds one inode and one
xattr leaf buffer.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Transaction users are allowed to flag up to two buffers and two inodes
for ownership preservation across a deferred transaction roll. Hoist
the variables and code responsible for this out of xfs_defer_trans_roll
so that we can use it for the defer capture mechanism.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
For kmalloc() allocations SLOB prepends the blocks with a 4-byte header,
and it puts the size of the allocated blocks in that header.
Blocks allocated with kmem_cache_alloc() allocations do not have that
header.
SLOB explodes when you allocate memory with kmem_cache_alloc() and then
try to free it with kfree() instead of kmem_cache_free().
SLOB will assume that there is a header when there is none, read some
garbage to size variable and corrupt the adjacent objects, which
eventually leads to hang or panic.
Let's make XFS work with SLOB by using proper free function.
Fixes: 9749fee83f ("xfs: enable the xfs_defer mechanism to process extents to free")
Signed-off-by: Rustam Kovhaev <rkovhaev@gmail.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Use 2-factor argument multiplication form kvcalloc() instead of
kvzalloc().
Link: https://github.com/KSPP/linux/issues/162
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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>
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.
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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()
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>
The recent change to make objtool aware of more symbol relocation types
(commit 24ff65257375: "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>
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>
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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
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>
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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
- Make sure tunable_scaling buffer is null-terminated after an update in sysfs
- Fix LTP named regression due to cgroup list ordering
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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
- Update the event constraints for Icelake
- Make sure the active time of an event is updated even for inactive events
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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
which remove section symbols now
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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
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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
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>
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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
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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
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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
- 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.
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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
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>
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>
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>
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>
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>
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>
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>
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>
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>
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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
Darrick J. Wong