some reordering required - take both fdget() to the point before
the allocations, with matching move of fdput() to the very end
of failure exit(s); after that it converts trivially.
simplify the cleanups that involve css_put(), while we are at it...
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
in all of those failure exits prior to fdget() are plain returns and
the only thing done after fdput() is (on failure exits) a kfree(),
which can be done before fdput() just fine.
NOTE: in acrn_irqfd_assign() 'fail:' failure exit is wrong for
eventfd_ctx_fileget() failure (we only want fdput() there) and once
we stop doing that, it doesn't need to check if eventfd is NULL or
ERR_PTR(...) there.
NOTE: in privcmd we move fdget() up before the allocation - more
to the point, before the copy_from_user() attempt.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
lift setting ->revents into the caller, so that failure exits (including
the early one) would be plain returns.
We need the scope of our struct fd to end before the store to ->revents,
since that's shared with the failure exits prior to the point where we
can do fdget().
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
take the logics from fdget() to fdput() into an inlined helper - with existing
wait_key_set() subsumed into that.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fdput() is followed by checking fatal_signal_pending() (and aborting
the loop in such case). fdput() is transposable with that check.
Yes, it'll probably end up with slightly fatter code (call after the
check has returned false + call on the almost never taken out-of-line path
instead of one call before the check), but it's not worth bothering with
explicit extra scope there (or dragging the check into the loop condition,
for that matter).
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fdput() moved past mnt_drop_file_write(); harmless, if somewhat cringeworthy.
Reordering could be avoided either by adding an explicit scope or by making
mnt_drop_file_write() called via __cleanup.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
the only thing done after fdput() (in failure cases) is a printk; safely
transposable with fdput()...
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
all failure exits prior to fdget() are returns, fdput() is immediately
followed by return.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fdput() can be transposed with add_{r,w}char() and inc_sysc{r,w}();
it's the same story as with do_readv()/do_writev(), only with
fdput() instead of fdput_pos().
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
all failure exits prior to fdget() leave the scope, all matching fdput()
are immediately followed by leaving the scope.
[xfs_ioc_commit_range() chunk moved here as well]
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fdget() is the first thing done in scope, all matching fdput() are
immediately followed by leaving the scope.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fdget_pos() for constructor, fdput_pos() for cleanup, all users of
fd..._pos() converted trivially.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Irregularity here is fdput() not in the same scope as fdget(); we could
just lift it out vmsplice_type() in vmsplice(2), but there's no much
point keeping vmsplice_type() separate after that...
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
XFS_IOC_FD_TO_HANDLE can grab a reference to copied ->f_path and
let the file go; results in simpler control flow - cleanup is
the same for both "by descriptor" and "by pathname" cases.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
The only failure exit before fdget() is a return, the only thing done
after fdput() is transposable with it.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
cleanup is convoluted enough as it is; it's easier to have early
failure outs do explicit kfree_skb(nc), rather than going to
contortions needed to reuse the cleanup from late failures.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
the only call site (in do_mq_notify()) obtains the argument
from an immediately preceding fdget() and it is immediately
followed by fdput(); might as well just replace it with
a variant that would take a descriptor instead of struct file *
and have file lookups handled inside that function.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Lift fdget() and fdput() out of perf_fget_light(), turning it into
is_perf_file(struct fd f). The life gets easier in both callers
if we do fdget() unconditionally, including the case when we are
given -1 instead of a descriptor - that avoids a reassignment in
perf_event_open(2) and it avoids a nasty temptation in _perf_ioctl()
where we must *not* lift output_event out of scope for output.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Fold timerfd_fget() into both callers to have fdget() and fdput() in
the same scope. Could be done in different ways, but this is probably
the smallest solution.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
With few exceptions emptiness checks are done as fd_file(...) in boolean
context (usually something like if (!fd_file(f))...); those will be
taken care of later.
However, there's a couple of places where we do those checks as
'store fd_file(...) into a variable, then check if this variable is
NULL' and those are harder to spot.
Get rid of those now.
use fd_empty() instead of extracting file and then checking it for NULL.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
The important part in sockfd_lookup_light() is avoiding needless
file refcount operations, not the marginal reduction of the register
pressure from not keeping a struct file pointer in the caller.
Switch to use fdget()/fdpu(); with sane use of CLASS(fd) we can
get a better code generation...
Would be nice if somebody tested it on networking test suites
(including benchmarks)...
sockfd_lookup_light() does fdget(), uses sock_from_file() to
get the associated socket and returns the struct socket reference to
the caller, along with "do we need to fput()" flag. No matching fdput(),
the caller does its equivalent manually, using the fact that sock->file
points to the struct file the socket has come from.
Get rid of that - have the callers do fdget()/fdput() and
use sock_from_file() directly. That kills sockfd_lookup_light()
and fput_light() (no users left).
What's more, we can get rid of explicit fdget()/fdput() by
switching to CLASS(fd, ...) - code generation does not suffer, since
now fdput() inserted on "descriptor is not opened" failure exit
is recognized to be a no-op by compiler.
[folded a fix for braino in do_recvmmsg() caught by Simon Horman]
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
- Move non-boot built-in DTBs to the .rodata section
- Fix Kconfig bugs
- Fix maint scripts in the linux-image Debian package
- Import some list macros to scripts/include/
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Merge tag 'kbuild-fixes-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Move non-boot built-in DTBs to the .rodata section
- Fix Kconfig bugs
- Fix maint scripts in the linux-image Debian package
- Import some list macros to scripts/include/
* tag 'kbuild-fixes-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: deb-pkg: Remove blank first line from maint scripts
kbuild: fix a typo dt_binding_schema -> dt_binding_schemas
scripts: import more list macros
kconfig: qconf: fix buffer overflow in debug links
kconfig: qconf: move conf_read() before drawing tree pain
kconfig: clear expr::val_is_valid when allocated
kconfig: fix infinite loop in sym_calc_choice()
kbuild: move non-boot built-in DTBs to .rodata section
Highlights:
- Intel PMC fix for suspend/resume issues on some Sky and Kaby Lake laptops
- Intel Diamond Rapids hw-id additions
- Documentation and MAINTAINERS fixes
- Some other small fixes
The following is an automated git shortlog grouped by driver:
ISST:
- Add Diamond Rapids to support list
- Fix the KASAN report slab-out-of-bounds bug
MAINTAINERS:
- Update Intel In Field Scan(IFS) entry
dell-ddv:
- Fix typo in documentation
dell-laptop:
- Do not fail when encountering unsupported batteries
dell-sysman:
- add support for alienware products
intel/pmc:
- Disable ACPI PM Timer disabling on Sky and Kaby Lake
platform/x86/intel:
- power-domains: Add Diamond Rapids support
wmi:
- Update WMI driver API documentation
x86-android-tablets:
- Fix use after free on platform_device_register() errors
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Merge tag 'platform-drivers-x86-v6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from Hans de Goede:
- Intel PMC fix for suspend/resume issues on some Sky and Kaby Lake
laptops
- Intel Diamond Rapids hw-id additions
- Documentation and MAINTAINERS fixes
- Some other small fixes
* tag 'platform-drivers-x86-v6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
platform/x86: x86-android-tablets: Fix use after free on platform_device_register() errors
platform/x86: wmi: Update WMI driver API documentation
platform/x86: dell-ddv: Fix typo in documentation
platform/x86: dell-sysman: add support for alienware products
platform/x86/intel: power-domains: Add Diamond Rapids support
platform/x86: ISST: Add Diamond Rapids to support list
platform/x86:intel/pmc: Disable ACPI PM Timer disabling on Sky and Kaby Lake
platform/x86: dell-laptop: Do not fail when encountering unsupported batteries
MAINTAINERS: Update Intel In Field Scan(IFS) entry
platform/x86: ISST: Fix the KASAN report slab-out-of-bounds bug
* Fix pKVM error path on init, making sure we do not change critical
system registers as we're about to fail
* Make sure that the host's vector length is at capped by a value
common to all CPUs
* Fix kvm_has_feat*() handling of "negative" features, as the current
code is pretty broken
* Promote Joey to the status of official reviewer, while James steps
down -- hopefully only temporarly
x86:
* Fix compilation with KVM_INTEL=KVM_AMD=n
* Fix disabling KVM_X86_QUIRK_SLOT_ZAP_ALL when shadow MMU is in use
Selftests:
* Fix compilation on non-x86 architectures
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"ARM64:
- Fix pKVM error path on init, making sure we do not change critical
system registers as we're about to fail
- Make sure that the host's vector length is at capped by a value
common to all CPUs
- Fix kvm_has_feat*() handling of "negative" features, as the current
code is pretty broken
- Promote Joey to the status of official reviewer, while James steps
down -- hopefully only temporarly
x86:
- Fix compilation with KVM_INTEL=KVM_AMD=n
- Fix disabling KVM_X86_QUIRK_SLOT_ZAP_ALL when shadow MMU is in use
Selftests:
- Fix compilation on non-x86 architectures"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
x86/reboot: emergency callbacks are now registered by common KVM code
KVM: x86: leave kvm.ko out of the build if no vendor module is requested
KVM: x86/mmu: fix KVM_X86_QUIRK_SLOT_ZAP_ALL for shadow MMU
KVM: arm64: Fix kvm_has_feat*() handling of negative features
KVM: selftests: Fix build on architectures other than x86_64
KVM: arm64: Another reviewer reshuffle
KVM: arm64: Constrain the host to the maximum shared SVE VL with pKVM
KVM: arm64: Fix __pkvm_init_vcpu cptr_el2 error path
- Allow r30 to be used in vDSO code generation of getrandom.
Thanks to: Jason A. Donenfeld.
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Merge tag 'powerpc-6.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fix from Michael Ellerman:
- Allow r30 to be used in vDSO code generation of getrandom
Thanks to Jason A. Donenfeld
* tag 'powerpc-6.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/vdso: allow r30 in vDSO code generation of getrandom
The blank line causes execve() to fail:
# strace ./postinst
execve("./postinst", ...) = -1 ENOEXEC (Exec format error)
strace: exec: Exec format error
+++ exited with 1 +++
However running the scripts via shell does work (at least with bash)
because the shell attempts to execute the file as a shell script when
execve() fails.
Fixes: b611daae5e ("kbuild: deb-pkg: split image and debug objects staging out into functions")
Signed-off-by: Aaron Thompson <dev@aaront.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
If we follow "make help" to "make dt_binding_schema", we will see
below error:
$ make dt_binding_schema
make[1]: *** No rule to make target 'dt_binding_schema'. Stop.
make: *** [Makefile:224: __sub-make] Error 2
It should be a typo. So this will fix it.
Fixes: 604a57ba97 ("dt-bindings: kbuild: Add separate target/dependency for processed-schema.json")
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
x86_android_tablet_remove() frees the pdevs[] array, so it should not
be used after calling x86_android_tablet_remove().
When platform_device_register() fails, store the pdevs[x] PTR_ERR() value
into the local ret variable before calling x86_android_tablet_remove()
to avoid using pdevs[] after it has been freed.
Fixes: 5eba014120 ("platform/x86: x86-android-tablets: Add support for instantiating platform-devs")
Fixes: e2200d3f26 ("platform/x86: x86-android-tablets: Add gpio_keys support to x86_android_tablet_init()")
Cc: stable@vger.kernel.org
Reported-by: Aleksandr Burakov <a.burakov@rosalinux.ru>
Closes: https://lore.kernel.org/platform-driver-x86/20240917120458.7300-1-a.burakov@rosalinux.ru/
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20241005130545.64136-1-hdegoede@redhat.com
The WMI driver core now passes the WMI event data to legacy notify
handlers, so WMI devices sharing notification IDs are now being
handled properly.
Fixes: e04e2b760d ("platform/x86: wmi: Pass event data directly to legacy notify handlers")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20241005213825.701887-1-W_Armin@gmx.de
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Alienware supports firmware-attributes and has its own OEM string.
Signed-off-by: Crag Wang <crag_wang@dell.com>
Link: https://lore.kernel.org/r/20241004152826.93992-1-crag_wang@dell.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
There have been multiple reports that the ACPI PM Timer disabling is
causing Sky and Kaby Lake systems to hang on all suspend (s2idle, s3,
hibernate) methods.
Remove the acpi_pm_tmr_ctl_offset and acpi_pm_tmr_disable_bit settings from
spt_reg_map to disable the ACPI PM Timer disabling on Sky and Kaby Lake to
fix the hang on suspend.
Fixes: e86c8186d0 ("platform/x86:intel/pmc: Enable the ACPI PM Timer to be turned off when suspended")
Reported-by: Paul Menzel <pmenzel@molgen.mpg.de>
Closes: https://lore.kernel.org/linux-pm/18784f62-91ff-4d88-9621-6c88eb0af2b5@molgen.mpg.de/
Reported-by: Todd Brandt <todd.e.brandt@intel.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219346
Cc: Marek Maslanka <mmaslanka@google.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Todd Brandt <todd.e.brandt@intel.com>
Tested-by: Paul Menzel <pmenzel@molgen.mpg.de> # Dell XPS 13 9360/0596KF
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/20241003202614.17181-2-hdegoede@redhat.com
If the battery hook encounters a unsupported battery, it will
return an error. This in turn will cause the battery driver to
automatically unregister the battery hook.
On machines with multiple batteries however, this will prevent
the battery hook from handling the primary battery, since it will
always get unregistered upon encountering one of the unsupported
batteries.
Fix this by simply ignoring unsupported batteries.
Reviewed-by: Pali Rohár <pali@kernel.org>
Fixes: ab58016c68 ("platform/x86:dell-laptop: Add knobs to change battery charge settings")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20241001212835.341788-4-W_Armin@gmx.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Ashok is no longer with Intel and his e-mail address will start bouncing
soon. Update his email address to the new one he provided to ensure
correct contact details in the MAINTAINERS file.
Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>
Link: https://lore.kernel.org/r/20241001170808.203970-1-jithu.joseph@intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
- Fix pKVM error path on init, making sure we do not change critical
system registers as we're about to fail
- Make sure that the host's vector length is at capped by a value
common to all CPUs
- Fix kvm_has_feat*() handling of "negative" features, as the current
code is pretty broken
- Promote Joey to the status of official reviewer, while James steps
down -- hopefully only temporarly
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Merge tag 'kvmarm-fixes-6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 6.12, take #1
- Fix pKVM error path on init, making sure we do not change critical
system registers as we're about to fail
- Make sure that the host's vector length is at capped by a value
common to all CPUs
- Fix kvm_has_feat*() handling of "negative" features, as the current
code is pretty broken
- Promote Joey to the status of official reviewer, while James steps
down -- hopefully only temporarly
Guard them with CONFIG_KVM_X86_COMMON rather than the two vendor modules.
In practice this has no functional change, because CONFIG_KVM_X86_COMMON
is set if and only if at least one vendor-specific module is being built.
However, it is cleaner to specify CONFIG_KVM_X86_COMMON for functions that
are used in kvm.ko.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: 590b09b1d8 ("KVM: x86: Register "emergency disable" callbacks when virt is enabled")
Fixes: 6d55a94222 ("x86/reboot: Unconditionally define cpu_emergency_virt_cb typedef")
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
kvm.ko is nothing but library code shared by kvm-intel.ko and kvm-amd.ko.
It provides no functionality on its own and it is unnecessary unless one
of the vendor-specific module is compiled. In particular, /dev/kvm is
not created until one of kvm-intel.ko or kvm-amd.ko is loaded.
Use CONFIG_KVM to decide if it is built-in or a module, but use the
vendor-specific modules for the actual decision on whether to build it.
This also fixes a build failure when CONFIG_KVM_INTEL and CONFIG_KVM_AMD
are both disabled. The cpu_emergency_register_virt_callback() function
is called from kvm.ko, but it is only defined if at least one of
CONFIG_KVM_INTEL and CONFIG_KVM_AMD is provided.
Fixes: 590b09b1d8 ("KVM: x86: Register "emergency disable" callbacks when virt is enabled")
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
A lot of little fixes, bigger ones include:
- bcachefs's __wait_on_freeing_inode() was broken in rc1 due to vfs
changes, now fixed along with another lost wakeup
- fragmentation LRU fixes; fsck now repairs successfully (this is the
data structure copygc uses); along with some nice simplification.
- Rework logged op error handling, so that if logged op replay errors
(due to another filesystem error) we delete the logged op instead of
going into an infinite loop)
- Various small filesystem connectivitity repair fixes
The final part of this patch series, fixing snapshots + unlinked file
handling, is now out on the list - I'm giving that part of the series
more time for user testing.
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Merge tag 'bcachefs-2024-10-05' of git://evilpiepirate.org/bcachefs
Pull bcachefs fixes from Kent Overstreet:
"A lot of little fixes, bigger ones include:
- bcachefs's __wait_on_freeing_inode() was broken in rc1 due to vfs
changes, now fixed along with another lost wakeup
- fragmentation LRU fixes; fsck now repairs successfully (this is the
data structure copygc uses); along with some nice simplification.
- Rework logged op error handling, so that if logged op replay errors
(due to another filesystem error) we delete the logged op instead
of going into an infinite loop)
- Various small filesystem connectivitity repair fixes"
* tag 'bcachefs-2024-10-05' of git://evilpiepirate.org/bcachefs:
bcachefs: Rework logged op error handling
bcachefs: Add warn param to subvol_get_snapshot, peek_inode
bcachefs: Kill snapshot arg to fsck_write_inode()
bcachefs: Check for unlinked, non-empty dirs in check_inode()
bcachefs: Check for unlinked inodes with dirents
bcachefs: Check for directories with no backpointers
bcachefs: Kill alloc_v4.fragmentation_lru
bcachefs: minor lru fsck fixes
bcachefs: Mark more errors AUTOFIX
bcachefs: Make sure we print error that causes fsck to bail out
bcachefs: bkey errors are only AUTOFIX during read
bcachefs: Create lost+found in correct snapshot
bcachefs: Fix reattach_inode()
bcachefs: Add missing wakeup to bch2_inode_hash_remove()
bcachefs: Fix trans_commit disk accounting revert
bcachefs: Fix bch2_inode_is_open() check
bcachefs: Fix return type of dirent_points_to_inode_nowarn()
bcachefs: Fix bad shift in bch2_read_flag_list()
fast commits.
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Merge tag 'ext4_for_linus-5.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Fix some ext4 bugs and regressions relating to oneline resize and fast
commits"
* tag 'ext4_for_linus-5.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix off by one issue in alloc_flex_gd()
ext4: mark fc as ineligible using an handle in ext4_xattr_set()
ext4: use handle to mark fc as ineligible in __track_dentry_update()
- Fix calculation for SBDF in error injection
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Merge tag 'cxl-fixes-6.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull cxl fix from Ira Weiny:
- Fix calculation for SBDF in error injection
* tag 'cxl-fixes-6.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
EINJ, CXL: Fix CXL device SBDF calculation
