Merge tag 'sched_ext-for-6.12-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext

Pull sched_ext fixes from Tejun Heo:

 - More issues reported in the enable/disable paths on large machines
   with many tasks due to scx_tasks_lock being held too long. Break up
   the task iterations

 - Remove ops.select_cpu() dependency in bypass mode so that a
   misbehaving implementation can't live-lock the machine by pushing all
   tasks to few CPUs in bypass mode

 - Other misc fixes

* tag 'sched_ext-for-6.12-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
  sched_ext: Remove unnecessary cpu_relax()
  sched_ext: Don't hold scx_tasks_lock for too long
  sched_ext: Move scx_tasks_lock handling into scx_task_iter helpers
  sched_ext: bypass mode shouldn't depend on ops.select_cpu()
  sched_ext: Move scx_buildin_idle_enabled check to scx_bpf_select_cpu_dfl()
  sched_ext: Start schedulers with consistent p->scx.slice values
  Revert "sched_ext: Use shorter slice while bypassing"
  sched_ext: use correct function name in pick_task_scx() warning message
  selftests: sched_ext: Add sched_ext as proper selftest target

Merge tag 'trace-ringbuffer-v6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull ring-buffer fixes from Steven Rostedt:

 - Fix ref counter of buffers assigned at boot up

   A tracing instance can be created from the kernel command line. If it
   maps to memory, it is considered permanent and should not be deleted,
   or bad things can happen. If it is not mapped to memory, then the
   user is fine to delete it via rmdir from the instances directory. But
   the ref counts assumed 0 was free to remove and greater than zero was
   not. But this was not the case. When an instance is created, it
   should have the reference of 1, and if it should not be removed, it
   must be greater than 1. The boot up code set normal instances with a
   ref count of 0, which could get removed if something accessed it and
   then released it. And memory mapped instances had a ref count of 1
   which meant it could be deleted, and bad things happen. Keep normal
   instances ref count as 1, and set memory mapped instances ref count
   to 2.

 - Protect sub buffer size (order) updates from other modifications

   When a ring buffer is changing the size of its sub-buffers, no other
   operations should be performed on the ring buffer. That includes
   reading it. But the locking only grabbed the buffer->mutex that keeps
   some operations from touching the ring buffer. It also must hold the
   cpu_buffer->reader_lock as well when updates happen as other paths
   use that to do some operations on the ring buffer.

* tag 'trace-ringbuffer-v6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ring-buffer: Fix reader locking when changing the sub buffer order
  ring-buffer: Fix refcount setting of boot mapped buffers

Pull bcachefs fixes from Kent Overstreet:

 - New metadata version inode_has_child_snapshots

   This fixes bugs with handling of unlinked inodes + snapshots, in
   particular when an inode is reattached after taking a snapshot;
   deleted inodes now get correctly cleaned up across snapshots.

 - Disk accounting rewrite fixes
     - validation fixes for when a device has been removed
     - fix journal replay failing with "journal_reclaim_would_deadlock"

 - Some more small fixes for erasure coding + device removal

 - Assorted small syzbot fixes

* tag 'bcachefs-2024-10-14' of git://evilpiepirate.org/bcachefs: (27 commits)
  bcachefs: Fix sysfs warning in fstests generic/730,731
  bcachefs: Handle race between stripe reuse, invalidate_stripe_to_dev
  bcachefs: Fix kasan splat in new_stripe_alloc_buckets()
  bcachefs: Add missing validation for bch_stripe.csum_granularity_bits
  bcachefs: Fix missing bounds checks in bch2_alloc_read()
  bcachefs: fix uaf in bch2_dio_write_done()
  bcachefs: Improve check_snapshot_exists()
  bcachefs: Fix bkey_nocow_lock()
  bcachefs: Fix accounting replay flags
  bcachefs: Fix invalid shift in member_to_text()
  bcachefs: Fix bch2_have_enough_devs() for BCH_SB_MEMBER_INVALID
  bcachefs: __wait_for_freeing_inode: Switch to wait_bit_queue_entry
  bcachefs: Check if stuck in journal_res_get()
  closures: Add closure_wait_event_timeout()
  bcachefs: Fix state lock involved deadlock
  bcachefs: Fix NULL pointer dereference in bch2_opt_to_text
  bcachefs: Release transaction before wake up
  bcachefs: add check for btree id against max in try read node
  bcachefs: Disk accounting device validation fixes
  bcachefs: bch2_inode_or_descendents_is_open()
  ...

The function ring_buffer_subbuf_order_set() updates each
ring_buffer_per_cpu and installs new sub buffers that match the requested
page order. This operation may be invoked concurrently with readers that
rely on some of the modified data, such as the head bit (RB_PAGE_HEAD), or
the ring_buffer_per_cpu.pages and reader_page pointers. However, no
exclusive access is acquired by ring_buffer_subbuf_order_set(). Modifying
the mentioned data while a reader also operates on them can then result in
incorrect memory access and various crashes.

Fix the problem by taking the reader_lock when updating a specific
ring_buffer_per_cpu in ring_buffer_subbuf_order_set().

Link: https://lore.kernel.org/linux-trace-kernel/20240715145141.5528-1-petr.pavlu@suse.com/
Link: https://lore.kernel.org/linux-trace-kernel/20241010195849.2f77cc3f@gandalf.local.home/
Link: https://lore.kernel.org/linux-trace-kernel/20241011112850.17212b25@gandalf.local.home/

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20241015112440.26987-1-petr.pavlu@suse.com
Fixes: 8e7b58c2 ("ring-buffer: Just update the subbuffers when changing their allocation order")
Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

As described in commit b07996c7 ("sched_ext: Don't hold
scx_tasks_lock for too long"), we're doing a cond_resched() every 32
calls to scx_task_iter_next() to avoid RCU and other stalls. That commit
also added a cpu_relax() to the codepath where we drop and reacquire the
lock, but as Waiman described in [0], cpu_relax() should only be
necessary in busy loops to avoid pounding on a cacheline (or to allow a
hypertwin to more fully utilize a core).

Let's remove the unnecessary cpu_relax().

[0]: https://lore.kernel.org/all/35b3889b-904a-4d26-981f-c8aa1557a7c7@redhat.com/

Cc: Waiman Long <llong@redhat.com>
Signed-off-by: David Vernet <void@manifault.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

A ring buffer which has its buffered mapped at boot up to fixed memory
should not be freed. Other buffers can be. The ref counting setup was
wrong for both. It made the not mapped buffers ref count have zero, and the
boot mapped buffer a ref count of 1. But an normally allocated buffer
should be 1, where it can be removed.

Keep the ref count of a normal boot buffer with its setup ref count (do
not decrement it), and increment the fixed memory boot mapped buffer's ref
count.

Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20241011165224.33dd2624@gandalf.local.home
Fixes: e645535a ("tracing: Add option to use memmapped memory for trace boot instance")
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

Pull f2fs fix from Jaegeuk Kim:
 "An urgent fix to resolve DIO read performance regression caused by
  'f2fs: fix to avoid racing in between read and OPU dio write'"

* tag 'f2fs-6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
  f2fs: allow parallel DIO reads

Pull erofs fixes from Gao Xiang:
 "The main one fixes a syzbot issue due to the invalid inode type out of
  file-backed mounts. The others are minor cleanups without actual logic
  changes.

  Summary:

   - Make sure only regular inodes can be used for file-backed mounts

   - Two minor codebase cleanups"

* tag 'erofs-for-6.12-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
  erofs: get rid of kaddr in `struct z_erofs_maprecorder`
  erofs: get rid of z_erofs_try_to_claim_pcluster()
  erofs: ensure regular inodes for file-backed mounts

sysfs warns if we're removing a symlink from a directory that's no
longer in sysfs; this is triggered by fstests generic/730, which
simulates hot removal of a block device.

This patch is however not a correct fix, since checking
kobj->state_in_sysfs on a kobj owned by another subsystem is racy.

A better fix would be to add the appropriate check to
sysfs_remove_link() - and sysfs_create_link() as well.

But kobject_add_internal()/kobject_del() do not as of today have locking
that would support that.

Note that the block/holder.c code appears to be subject to this race as
well.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc:  Christoph Hellwig <hch@lst.de>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

When creating a new stripe, we may reuse an existing stripe that has
some empty and some nonempty blocks.

Generally, the existing stripe won't change underneath us - except for
block sector counts, which we copy to the new key in
ec_stripe_key_update.

But the device removal path can now invalidate stripe pointers to a
device, and that can race with stripe reuse.

Change ec_stripe_key_update() to check for and resolve this
inconsistency.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Update for BCH_SB_MEMBER_INVALID.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Pull HID fixes from Jiri Kosina:

 - fix for memory corruption regression in amd_sfh driver (Basavaraj
   Natikar)

 - fix for mis-reporting of BTN_TOOL_PEN and BTN_TOOL_RUBBER for AES
   sensors tools in Wacom driver (Jason Gerecke)

 - fix for unitialized variable use in intel-ish-hid driver
   (SurajSonawane2415)

 - a few device-specific quirks / device ID additions

* tag 'hid-for-linus-2024101301' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
  HID: wacom: Hardcode (non-inverted) AES pens as BTN_TOOL_PEN
  HID: amd_sfh: Switch to device-managed dmam_alloc_coherent()
  HID: multitouch: Add quirk for HONOR MagicBook Art 14 touchpad
  HID: multitouch: Add support for B2402FVA track point
  HID: plantronics: Workaround for an unexcepted opposite volume key
  hid: intel-ish-hid: Fix uninitialized variable 'rv' in ish_fw_xfer_direct_dma

Reported-by: syzbot+f8c98a50c323635be65d@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

We were checking that the alloc key was for a valid device, but not a
valid bucket.

This is the upgrade path from versions prior to bcachefs being mainlined.

Reported-by: syzbot+a1b59c8e1a3f022fd301@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Reported-by: syzbot+19ad84d5133871207377@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Pull smb client fixes from Steve French:
 "Two fixes for Windows symlink handling"

* tag '6.12-rc2-cifs-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Fix creating native symlinks pointing to current or parent directory
  cifs: Improve creating native symlinks pointing to directory

Pull USB fixes from Greg KH:
 "Here are some small USB fixes for some reported problems for 6.12-rc3.
  Include in here is:

   - fix for yurex driver that was caused in -rc1

   - build error fix for usbg network filesystem code

   - onboard_usb_dev build fix

   - dwc3 driver fixes for reported errors

   - gadget driver fix

   - new USB storage driver quirk

   - xhci resume bugfix

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

* tag 'usb-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  net/9p/usbg: Fix build error
  USB: yurex: kill needless initialization in yurex_read
  Revert "usb: yurex: Replace snprintf() with the safer scnprintf() variant"
  usb: xhci: Fix problem with xhci resume from suspend
  usb: misc: onboard_usb_dev: introduce new config symbol for usb5744 SMBus support
  usb: dwc3: core: Stop processing of pending events if controller is halted
  usb: dwc3: re-enable runtime PM after failed resume
  usb: storage: ignore bogus device raised by JieLi BR21 USB sound chip
  usb: gadget: core: force synchronous registration

Merge tag 'driver-core-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg KH:
 "Here is a single driver core fix, and a .mailmap update.

  The fix is for the rust driver core bindings, turned out that the
  from_raw binding wasn't a good idea (don't want to pass a pointer to a
  reference counted object without actually incrementing the pointer.)
  So this change fixes it up as the from_raw binding came in in -rc1.

  The other change is a .mailmap update.

  Both have been in linux-next for a while with no reported issues"

* tag 'driver-core-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  mailmap: update mail for Fiona Behrens
  rust: device: change the from_raw() function

Pull powerpc fix from Michael Ellerman:

 - Fix crash in memcpy on 8xx due to dcbz workaround since recent
   changes

Thanks to Christophe Leroy.

* tag 'powerpc-6.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/8xx: Fix kernel DTLB miss on dcbz

Pull SCSI fixes from James Bottomley:
 "Four small fixes, three in drivers and one in the FC transport class
  to add idempotence to state setting"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: scsi_transport_fc: Allow setting rport state to current state
  scsi: wd33c93: Don't use stale scsi_pointer value
  scsi: fnic: Move flush_work initialization out of if block
  scsi: ufs: Use pre-calculated offsets in ufshcd_init_lrb()

Merge tag 'hwmon-for-v6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - Add missing dependencies on REGMAP_I2C for several drivers

 - Fix memory leak in adt7475 driver

 - Relabel Columbiaville temperature sensor in intel-m10-bmc-hwmon
   driver to match other sensor labels

* tag 'hwmon-for-v6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (max1668) Add missing dependency on REGMAP_I2C
  hwmon: (ltc2991) Add missing dependency on REGMAP_I2C
  hwmon: (adt7470) Add missing dependency on REGMAP_I2C
  hwmon: (adm9240) Add missing dependency on REGMAP_I2C
  hwmon: (mc34vr500) Add missing dependency on REGMAP_I2C
  hwmon: (tmp513) Add missing dependency on REGMAP_I2C
  hwmon: (adt7475) Fix memory leak in adt7475_fan_pwm_config()
  hwmon: intel-m10-bmc-hwmon: relabel Columbiaville to CVL Die Temperature

Check if we have snapshot_trees or subvolumes that refer to the snapshot
node being reconstructed, and use them.

With this, the kill_btree_root test that blows away the snapshots btree
now passes, and we're able to successfully reconstruct.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This fixes an assertion pop in nocow_locking.c

00243 kernel BUG at fs/bcachefs/nocow_locking.c:41!
00243 Internal error: Oops - BUG: 00000000f2000800 [#1] SMP
00243 Modules linked in:
00243 Hardware name: linux,dummy-virt (DT)
00243 pstate: 60001005 (nZCv daif -PAN -UAO -TCO -DIT +SSBS BTYPE=--)
00244 pc : bch2_bucket_nocow_unlock (/home/testdashboard/linux-7/fs/bcachefs/nocow_locking.c:41)
00244 lr : bkey_nocow_lock (/home/testdashboard/linux-7/fs/bcachefs/data_update.c:79)
00244 sp : ffffff80c82373b0
00244 x29: ffffff80c82373b0 x28: ffffff80e08958c0 x27: ffffff80e0880000
00244 x26: ffffff80c8237a98 x25: 00000000000000a0 x24: ffffff80c8237ab0
00244 x23: 00000000000000c0 x22: 0000000000000008 x21: 0000000000000000
00244 x20: ffffff80c8237a98 x19: 0000000000000018 x18: 0000000000000000
00244 x17: 0000000000000000 x16: 000000000000003f x15: 0000000000000000
00244 x14: 0000000000000008 x13: 0000000000000018 x12: 0000000000000000
00244 x11: 0000000000000000 x10: ffffff80e0880000 x9 : ffffffc0803ac1a4
00244 x8 : 0000000000000018 x7 : ffffff80c8237a88 x6 : ffffff80c8237ab0
00244 x5 : ffffff80e08988d0 x4 : 00000000ffffffff x3 : 0000000000000000
00244 x2 : 0000000000000004 x1 : 0003000000000d1e x0 : ffffff80e08988c0
00244 Call trace:
00244 bch2_bucket_nocow_unlock (/home/testdashboard/linux-7/fs/bcachefs/nocow_locking.c:41)
00245 bch2_data_update_init (/home/testdashboard/linux-7/fs/bcachefs/data_update.c:627 (discriminator 1))
00245 promote_alloc.isra.0 (/home/testdashboard/linux-7/fs/bcachefs/io_read.c:242 /home/testdashboard/linux-7/fs/bcachefs/io_read.c:304)
00245 __bch2_read_extent (/home/testdashboard/linux-7/fs/bcachefs/io_read.c:949)
00246 __bch2_read (/home/testdashboard/linux-7/fs/bcachefs/io_read.c:1215)
00246 bch2_direct_IO_read (/home/testdashboard/linux-7/fs/bcachefs/fs-io-direct.c:132)
00246 bch2_read_iter (/home/testdashboard/linux-7/fs/bcachefs/fs-io-direct.c:201)
00247 aio_read.constprop.0 (/home/testdashboard/linux-7/fs/aio.c:1602)
00247 io_submit_one.constprop.0 (/home/testdashboard/linux-7/fs/aio.c:2003 /home/testdashboard/linux-7/fs/aio.c:2052)
00248 __arm64_sys_io_submit (/home/testdashboard/linux-7/fs/aio.c:2111 /home/testdashboard/linux-7/fs/aio.c:2081 /home/testdashboard/linux-7/fs/aio.c:2081)
00248 invoke_syscall.constprop.0 (/home/testdashboard/linux-7/arch/arm64/include/asm/syscall.h:61 /home/testdashboard/linux-7/arch/arm64/kernel/syscall.c:54)
00248 ========= FAILED TIMEOUT tiering_variable_buckets_replicas in 1200s
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

BCH_TRANS_COMMIT_journal_reclaim without BCH_WATERMARK_reclaim means
"return an error if low on journal space" - but accounting replay must
succeed.

Fixes https://github.com/koverstreet/bcachefs/issues/656Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Reported-by: syzbot+064ce437a1ad63d3f6ef@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This fixes a kasan splat in the ec device removal tests.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Merge tag 'linux_kselftest-fixes-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "Fixes for build, run-time errors, and reporting errors:

   - ftrace: regression test for a kernel crash when running function
     graph tracing and then enabling function profiler.

   - rseq: fix for mm_cid test failure.

   - vDSO:
      - fixes to reporting skip and other error conditions
      - changes unconditionally build chacha and getrandom tests on all
        architectures to make it easier for them to run in CIs
      - build error when sched.h to bring in CLONE_NEWTIME define"

* tag 'linux_kselftest-fixes-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  ftrace/selftest: Test combination of function_graph tracer and function profiler
  selftests/rseq: Fix mm_cid test failure
  selftests: vDSO: Explicitly include sched.h
  selftests: vDSO: improve getrandom and chacha error messages
  selftests: vDSO: unconditionally build getrandom test
  selftests: vDSO: unconditionally build chacha test

Pull devicetree fixes from Rob Herring:

 - Disable kunit tests for arm64+ACPI

 - Fix refcount issue in kunit tests

 - Drop constraints on non-conformant 'interrupt-map' in fsl,ls-extirq

 - Drop type ref on 'msi-parent in fsl,qoriq-mc binding

 - Move elgin,jg10309-01 to its own binding from trivial-devices

* tag 'devicetree-fixes-for-6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of: Skip kunit tests when arm64+ACPI doesn't populate root node
  of: Fix unbalanced of node refcount and memory leaks
  dt-bindings: interrupt-controller: fsl,ls-extirq: workaround wrong interrupt-map number
  dt-bindings: misc: fsl,qoriq-mc: remove ref for msi-parent
  dt-bindings: display: elgin,jg10309-01: Add own binding

Pull fbdev platform driver fix from Helge Deller:
 "Switch fbdev drivers back to struct platform_driver::remove()

  Now that 'remove()' has been converted to the sane new API, there's
  no reason for the 'remove_new()' use, so this converts back to the
  traditional and simpler name.

  See commits

     5c5a7680 ("platform: Provide a remove callback that returns no value")
     0edb555a ("platform: Make platform_driver::remove() return void")

  for background to this all"

* tag 'fbdev-for-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
  fbdev: Switch back to struct platform_driver::remove()

Pull gpio fixes from Bartosz Golaszewski:

 - fix clock handle leak in probe() error path in gpio-aspeed

 - add a dummy register read to ensure the write actually completed

* tag 'gpio-fixes-for-v6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: aspeed: Use devm_clk api to manage clock source
  gpio: aspeed: Add the flush write to ensure the write complete.

Pull NFS client fixes from Anna Schumaker:
 "Localio Bugfixes:
   - remove duplicated include in localio.c
   - fix race in NFS calls to nfsd_file_put_local() and nfsd_serv_put()
   - fix Kconfig for NFS_COMMON_LOCALIO_SUPPORT
   - fix nfsd_file tracepoints to handle NULL rqstp pointers

  Other Bugfixes:
   - fix program selection loop in svc_process_common
   - fix integer overflow in decode_rc_list()
   - prevent NULL-pointer dereference in nfs42_complete_copies()
   - fix CB_RECALL performance issues when using a large number of
     delegations"

* tag 'nfs-for-6.12-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  NFS: remove revoked delegation from server's delegation list
  nfsd/localio: fix nfsd_file tracepoints to handle NULL rqstp
  nfs_common: fix Kconfig for NFS_COMMON_LOCALIO_SUPPORT
  nfs_common: fix race in NFS calls to nfsd_file_put_local() and nfsd_serv_put()
  NFSv4: Prevent NULL-pointer dereference in nfs42_complete_copies()
  SUNRPC: Fix integer overflow in decode_rc_list()
  sunrpc: fix prog selection loop in svc_process_common
  nfs: Remove duplicated include in localio.c

Pull RCU fix from Neeraj Upadhyay:
 "Fix rcuog kthread wakeup invocation from softirq context on a CPU
  which has been marked offline.

  This can happen when new callbacks are enqueued from a softirq on an
  offline CPU before it calls rcutree_report_cpu_dead(). When this
  happens on NOCB configuration, the rcuog wake-up is deferred through
  an IPI to an online CPU. This is done to avoid call into the scheduler
  which can risk arming the RT-bandwidth after hrtimers have been
  migrated out and disabled.

  However, doing IPI call from softirq is not allowed: Fix this by
  forcing deferred rcuog wakeup through the NOCB timer when the CPU is
  offline"

* tag 'rcu.fixes.6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux:
  rcu/nocb: Fix rcuog wake-up from offline softirq

Pull xen fix from Juergen Gross:
 "A fix for topology information of Xen PV guests"

* tag 'for-linus-6.12a-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86/xen: mark boot CPU of PV guest in MSR_IA32_APICBASE

Masami reported a bug when running function graph tracing then the
function profiler. The following commands would cause a kernel crash:

  # cd /sys/kernel/tracing/
  # echo function_graph > current_tracer
  # echo 1 > function_profile_enabled

In that order. Create a test to test this two to make sure this does not
come back as a regression.

Link: https://lore.kernel.org/172398528350.293426.8347220120333730248.stgit@devnote2

Link: https://lore.kernel.org/all/20241010165235.35122877@gandalf.local.home/Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

Adapt the rseq.c/rseq.h code to follow GNU C library changes introduced by:

glibc commit 2e456ccf0c34 ("Linux: Make __rseq_size useful for feature detection (bug 31965)")

Without this fix, rseq selftests for mm_cid fail:

./run_param_test.sh
Default parameters
Running test spinlock
Running compare-twice test spinlock
Running mm_cid test spinlock
Error: cpu id getter unavailable

Fixes: 18c23558 ("selftests/rseq: Implement rseq mm_cid field support")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Peter Zijlstra <peterz@infradead.org>
CC: Boqun Feng <boqun.feng@gmail.com>
CC: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Shuah Khan <skhan@linuxfoundation.org>
CC: Carlos O'Donell <carlos@redhat.com>
CC: Florian Weimer <fweimer@redhat.com>
CC: linux-kselftest@vger.kernel.org
CC: stable@vger.kernel.org
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

Pull io_uring fixes from Jens Axboe:

 - Explicitly have a mshot_finished condition for IORING_OP_RECV in
   multishot mode, similarly to what IORING_OP_RECVMSG has. This doesn't
   fix a bug right now, but it makes it harder to actually have a bug
   here if a request takes multiple iterations to finish.

 - Fix handling of retry of read/write of !FMODE_NOWAIT files. If they
   are pollable, that's all we need.

* tag 'io_uring-6.12-20241011' of git://git.kernel.dk/linux:
  io_uring/rw: allow pollable non-blocking attempts for !FMODE_NOWAIT
  io_uring/rw: fix cflags posting for single issue multishot read

Pull power management fixes from Rafael Wysocki:
 "These address two issues in the TPMI module of the Intel RAPL power
  capping driver and one issue in the processor part of the Intel
  int340x thermal driver, update a CPU ID list and register definitions
  needed for RAPL PL4 support and remove some unused code.

  Specifics:

   - Fix the TPMI_RAPL_REG_DOMAIN_INFO register offset in the TPMI part
     of the Intel RAPL power capping driver, make it ignore minor
     hardware version mismatches (which only indicate exposing
     additional features) and update register definitions in it to
     enable PL4 support (Zhang Rui)

   - Add Arrow Lake-U to the list of processors supporting PL4 in the
     MSR part of the Intel RAPL power capping driver (Sumeet Pawnikar)

   - Remove excess pci_disable_device() calls from the processor part of
     the int340x thermal driver to address a warning triggered during
     module unload and remove unused CPU hotplug code related to RAPL
     support from it (Zhang Rui)"

* tag 'pm-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal: intel: int340x: processor: Add MMIO RAPL PL4 support
  thermal: intel: int340x: processor: Remove MMIO RAPL CPU hotplug support
  powercap: intel_rapl_msr: Add PL4 support for Arrowlake-U
  powercap: intel_rapl_tpmi: Ignore minor version change
  thermal: intel: int340x: processor: Fix warning during module unload
  powercap: intel_rapl_tpmi: Fix bogus register reading

Pull thermal control fixes from Rafael Wysocki:
 "Address possible use-after-free scenarios during the processing of
  thermal netlink commands and during thermal zone removal (Rafael
  Wysocki)"

* tag 'thermal-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal: core: Free tzp copy along with the thermal zone
  thermal: core: Reference count the zone in thermal_zone_get_by_id()

Pull ACPI fixes from Rafael Wysocki:
 "Reduce the number of ACPI IRQ override DMI quirks by combining quirks
  that cover similar systems while making them cover additional models
  at the same time (Hans de Goede)"

* tag 'acpi-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: resource: Fold Asus Vivobook Pro N6506M* DMI quirks together
  ACPI: resource: Fold Asus ExpertBook B1402C* and B1502C* DMI quirks together
  ACPI: resource: Make Asus ExpertBook B2502 matches cover more models
  ACPI: resource: Make Asus ExpertBook B2402 matches cover more models