Pull non-MM updates from Andrew Morton:

 - "ocfs2: exit recovery thread on mount error path" (Joseph Qi):

   Stop OCFS2 recovery before freeing failed-mount state and replay
   slots, closing use-after-free and double-free races. Defer
   suballocator reclaim to break a transaction-lock deadlock with
   dismount.

 - "ocfs2: validate suballoc slot and bit of metadata blocks" (Joseph
   Qi):

   Validate OCFS2 metadata suballocator slots, bits and directory index
   block locations. Reject corrupt metadata with filesystem errors
   instead of BUGs or out-of-bounds accesses.

 - "ocfs2: deal with legacy signed name hash values" (Joseph Qi):

   Restore OCFS2 lookups for non-ASCII names stored with legacy signed
   hashes. Use stored xattr hashes during bucket splits to avoid
   duplicate entries and spurious ENOSPC failures.

 - "ocfs2: stabilize dentry names in file and setattr traces" (Cen
   Zhang):

   Snapshot OCFS2 names during file and setattr tracing to prevent
   rename races using freed storage or mismatched names and lengths.
   Preserve trace formats and the locked release open-count sample.

 - "panic: fix panic_force_cpu= redirect races and NMI bypass" (Bradley
   Morgan):

   Fix panic_force_cpu races and NMI redirection so crash-kernel CPU
   selection is honored. Preserve variable arguments on failed redirects
   and use a static message buffer.

 - "fat: allocate multiple clusters in fallocate" (Matheus Alves de
   Almeida):

   Allocate FAT clusters in batches for FALLOC_FL_KEEP_SIZE and batch
   FAT updates. This removes repeated single-cluster allocation
   overhead, particularly on synchronous mounts.

 - "scripts/gdb: fix radix tree lookup and stack depot diagnostic"
   (Ting-Han Hou):

   Fix GDB radix-tree lookup and its handling of XArray sibling, retry
   and zero entries. Also repair the stack-depot diagnostic for an
   out-of-range pool index.

 - "hung_task: Improve warning budget handling and task reporting"
   (Aaron Tomlin):

   Reset the hung-task warning budget after recovery so later hangs
   remain visible. Keep the configured limit intact and emit one summary
   per scan when detailed reports exhaust the budget.

 - "bootconfig: Reject unexpected data after null character and
   cleanups" (Masami Hiramatsu):

   Reject bootconfig data after an embedded null while accepting
   trailing padding. Validate the full input in the userspace tool, and
   retain internal tree sanity checks there rather than in the kernel.

 - "kbuild: GCOV cleanups following the prefer-atomic fix" (Konstantin
   Khorenko):

   Use the actual GCOV build flags in the prefer-atomic compiler probe.
   Move flag setup into scripts/Makefile.gcov and skip the probe when
   GCOV is disabled.

 - "ocfs2: xattr bucket validation fixes" (Joseph Qi):

   Accept valid OCFS2 xattr buckets spanning 512-byte blocks, avoiding
   false read-only remounts. Reject misaligned buckets and return errors
   instead of panicking on corrupt defrag metadata.

 - "ocfs2: fix metadata reservation for xattr value trees" (Joseph Qi):

   Reserve enough OCFS2 metadata for new and relocated xattr value
   trees. Fix shortfalls which could cause ENOSPC, dropped entries and
   leaked clusters on fragmented filesystems; remove duplicate
   reservations.

 - "Introduce arch_do_panic" (Mete Durlu):

   Add arch_do_panic() and move s390 and sparc handling out of generic
   panic code. The architecture-specific actions now follow the
   end-of-panic marker.

 - "checkpatch: userspace improvements" (Petr Vorel):

   Improve checkpatch's userspace detection and suppress kernel-only
   checks. Recognize standard inttypes macros and add explicit
   --userspace and --no-userspace overrides.

 - "ocfs2: validate dr_fs_generation of dir index root blocks" (Joseph
   Qi):

   Check OCFS2 directory index generations and leaf block numbers.
   Reject stale or misplaced blocks instead of using metadata left by a
   previously formatted filesystem.

 - "selftests/membarrier: Skip an unregistered memory barrier test on
   Musl" (Chris Gellermann):

   Skip the unregistered membarrier test when libc has already
   registered the command. Musl does this during thread creation,
   causing false failures in the multithreaded test.

 - "init: fix array boundary bugs in boot parameter parsing"
   (Wilson Felipe Pereira):

   Fix boot argument boundary cases which leave stale arguments in
   init's command line or panic when replacing the final environment
   variable. Clear the last slot and check duplicates before the limit.

Summary of the 87 singletons in this merge:

  The OCFS2 singletons fix deadlocks between xattr updates and inline
  truncation, and during inode reclaim. Corrupt quota and extent
  metadata could also crash the kernel or corrupt memory; these paths
  now check the layout before using it. Other fixes close use-after-free
  and publication races around cluster reconfiguration, node failure,
  quota remount errors and shared refcount trees. New files now retain
  security labels from all stacked LSMs instead of silently dropping all
  but one. Valid xattr insertions also stop tripping FORTIFY on builds
  with counted arrays.

  Elsewhere, a lost wakeup could leave hardware-monitoring reads stuck
  in unkillable sleep and block further I2C traffic. That is fixed, as
  are kernel memory leaks in POSIX message-queue notifications and tmpfs
  casefold setup which could grow until memory is exhausted. A driver
  removal race which could crash the kernel is fixed too. The
  hibernation command through reboot() also stops taking the same mutex
  twice, avoiding a deadlock before suspension.

  On the boot side, bzip2 decoding now accepts valid full blocks emitted
  by lbzip2, fixing failures to boot those compressed kernels. Malformed
  bzip2 streams can no longer overflow the decode buffer, and LZ4
  initrds are checked before the decoder can read past their end. FAT
  rejects geometry which overflows the data-area calculation on 32-bit
  systems, and rolls back entries when inode setup fails, preventing
  failed creations from reappearing after remount. The x86 XOR and RAID6
  AVX paths also avoid imposing a slowdown on subsequent SSE code.

* tag 'mm-nonmm-stable-2026-10-25-14-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (134 commits)
  scripts/gdb: fix stack depot out-of-bounds diagnostic
  scripts/gdb: fix radix tree lookup pointer handling
  ocfs2/cluster: remove zero-address nodes from IP tree on teardown
  ocfs2: snapshot the dentry name while tracing file release
  ocfs2: snapshot dentry names in file and setattr traces
  ocfs2/dlm: drain join handlers before releasing module text
  MAINTAINERS: update Markus's e-mail address
  mailmap: add entries for Andrew Jones
  stackdepot: stop preallocating after the final pool
  ocfs2: drain quorum work before removing the cluster
  watchdog: force console verbose when reporting lockups
  profiling: fix sampling step on 64-bit big-endian systems
  kernel/reboot: avoid potential deadlocks during suspension
  compat: avoid double rounding in times()
  ocfs2: pin owning modules for open debugfs files
  ocfs2/cluster: initialize heartbeat regions before publishing them
  selftests/proc: proc-pid-vm: fix unused variable warning on non-x86
  ocfs2: pin refcount trees before dropping the lookup lock
  ocfs2: validate the xattr tree root of an indexed xattr block
  ocfs2/dlm: hold the lookup reference across convert AST enqueue
  ...

Pull printk updates from Petr Mladek:

 - John Ogness became PRINTK co-maintainer

 - Unregister boot consoles when any proper console is registered at the
   end of the boot phase. Before they were removed only when the
   so-called preferred console, usually set via the last 'console='
   parameter, got registered

 - Fix computation for increasing the printk ringbuffer on systems with
   many CPUs and possibly long backtraces from all CPUs

 - Cleaned up irq_works handling for deferred printk operations

 - Use acquire/release semantic for filled_random_ptr_key

 - Allow to use ':' in console options

 - More code clean up

* tag 'printk-for-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  MAINTAINERS: Make John PRINTK co-maintainer
  lib/vsprintf: Use EXPORT_SYMBOL_IF_KUNIT() to export symbols
  printk: Remove console options before decoding the name
  printk: increase the ring buffer for more than 16 CPUs by default
  printk_ringbuffer: Avoid needless read of prb_desc
  printk: Use two irq_works instead per-CPU
  lib/vsprintf: Use acquire/release for ptr_key publication
  printk: Remove remaining boot consoles when a real console exists

Pull hardening updates from Kees Cook:

 - Provide kmalloc_obj*-style API for devm_kmalloc()

 - Improve seq_buf API for saner C String handling with several bug
   fixes along the way (Kees Cook, Bill Wendling)

 - Overflow helper readability improvements (Bill Wendling)

 - Unexport native_write_cr4() (Dennis Chen)

 - um: fix CONFIG_GCOV for built-in code (Johannes Berg)

 - Improve stackinit test coverage (Justin Stitt)

 - KMSAN: fix memset() when using fortify-source, again (Arnd Bergmann)

 - lkdtm: use kmalloc() instead of __get_free_page (Mahad Ibrahim)

 - signalfd: don't dequeue the forced fatal signals (Oleg Nesterov)

 - Fix randstruct to recognize new container_of() behavior

 - coccinelle: kmalloc_obj: Convert multi-byte integral allocations too

 - Fix a couple remaining allocation return type mismatches

* tag 'hardening-v7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (29 commits)
  overflow: Match arithmetic in both parts of __builtin_choose_expr
  lkdtm: Make UNSET_SMEP built-in-only and unexport native_write_cr4()
  extcon: realtek: Remove const from type_c_cfg allocation type
  coresight: cti: Add const to con_groups allocation type
  docs: core-api: Document the seq_buf API
  nvdimm: ndtest: Return the string length from flags_show()
  powerpc/papr_scm: Return the string length from the sysfs show functions
  seq_buf: Add seq_buf_init_append()
  bpf: Remove dead newline stripping from format_disasm_line()
  seq_buf: Add seq_buf_terminate()
  seq_buf: Add seq_buf_strlen()
  seq_buf: Clear what a writer did not claim when a seq_buf overflows
  seq_buf: Copy what fits when seq_buf_puts() and seq_buf_putmem() overflow
  scsi: lpfc: Print rx monitor records straight into the seq_buf
  seq_buf: Do not pop from an overflowed seq_buf
  seq_buf: Do not print an empty line from an overflowed seq_buf_do_printk()
  .get_maintainer.ignore: Add Kees Cook
  devres: Provide kmalloc_obj*-style API for devm_kmalloc
  mm: Move default_gfp() into gfp_types.h
  kunit/stackinit: Clean up XFAIL under instrumentation
  ...

Pull crypto updates from Herbert Xu:
 "API:
   - Fix algif_skcipher source SG overrun
   - Allow hmac(sha512) for non-root users

  Algorithms:
   - Add wrapper for zeroing AES key context
   - Avoid redundant stream initialisations in zstd

  Drivers:
   - Remove hisilicon/sec.
   - Handle digest-only authenc requests in atmel
   - Handle zero-length skcipher requests in mxs-dcp
   - Lower the default priority of caam/qi2

  Others:
   - Optimise key comparison in rhashtable lookup that uses constant
     parameters"

* tag 'v7.4-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (146 commits)
  crypto: atmel-tdes - consolidate error paths in atmel_tdes_dma_init()
  crypto: atmel-tdes - reuse fast in atmel_tdes_crypt_start()
  crypto: atmel-tdes - use separate DMA scatterlists
  MAINTAINERS: delete entry for John Allen
  hwrng: amd - use PMBASE_OFFSET consistently
  hwrng: cctrng - simplify cctrng_probe()
  hwrng: intel - simplify intel_rng_mod_init()
  crypto: qat - fix use of destroyed vf2pf_lock on VF restart
  crypto: qat - initialise state_lock on every path in adf_devmgr_add_dev()
  hwrng: imx-rngc - Use optional clock
  crypto: talitos - init tasklets before requesting IRQs
  crypto: algif_skcipher - rewind rounded output bytes
  crypto: algif_hash - Allow hmac(sha512) for unpriviledged users
  crypto: sa2ul - Remove unused fields
  hwrng: stm32 - use devm_platform_ioremap_resource() in stm32_rng_probe()
  hwrng: stm32 - drop redundant initializations
  hwrng: amd - simplify control flow in amd_rng_mod_init()
  hwrng: stm32 - reuse clock rate in stm32_rng_clock_freq_restrain()
  hwrng: stm32 - use swap() in stm32_rng_probe()
  hwrng: cctrng - drop redundant initializations
  ...

get_range() stops writing once the array is full, but get_options() still
advances its index by the whole range.  So "1-100" parsed into four ints
reports 99 numbers, and a range like "0-2147483647" wraps the index
negative and writes outside the array.

Stop once a range fills the array, bail out in validation mode before the
count overflows, and saturate the range length in get_range().  Add KUnit
cases; without the fix "0-2147483647" panics the test kernel.

Only root can supply this input, so this is a robustness fix.

[akpm@linux-foundation.org: add additional test case from Leizhen]
Link: https://lore.kernel.org/20261005213945.359905-1-armaan.sandhu0504@gmail.com
Fixes: 22f2e2801799 ("[PATCH] get_options to allow a hypenated range for isolcpus")
Signed-off-by: Armaan Sandhu <armaan.sandhu0504@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reported-by: Leizhen Zhang <lzsx618@gmail.com>
Reviewed-by: Leizhen Zhang <lzsx618@gmail.com>
Cc: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: <stable@vger.kernel.org>

Replace EXPORT_SYMBOL_FOR_MODULES() with EXPORT_SYMBOL_IF_KUNIT()
to mark the symbols as visible only if CONFIG_KUNIT is enabled.

Kunit test should import the namespace EXPORTED_FOR_KUNIT_TESTING to
use these marked symbols. This is the standard way for all KUnit
tests.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Tamir Duberstein <tamird@kernel.org>
Link: https://patch.msgid.link/20260714122143.743227-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Petr Mladek <pmladek@suse.com>

Several strlcat() call sites being converted to seq_buf need behavior
seq_buf doesn't currently provide. The normal seq_buf_init() always
empties the buffer (sets its "len" to 0) via seq_buf_clear(). Code
migrating from strlcat(buf, ...), which appends to whatever buf already
contains, can't use seq_buf_init() without discarding that existing
content. Add seq_buf_init_append(), which preserves the existing
contents and positions the seq_buf to append after it. A buffer with
no NUL within its size starts out overflowed, as strlcat() treats it
as already truncated. Add KUnit tests for behavior coverage.

Tests passed under qemu on ARCH=x86_64 with GCC 16.2.0 and CONFIG_KASAN=y,
and on big-endian ARCH=s390 with GCC s390x-linux-gnu 16.2.0.

Assisted-by: LLM
Signed-off-by: Bill Wendling <morbo@google.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Co-developed-by: Kees Cook <kees@kernel.org>
Link: https://patch.msgid.link/20261005155708.1471260-9-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>

Seven callers call seq_buf_str() only to NUL-terminate the buffer,
discarding the returned pointer. Two of them need a comment to say so.

Add seq_buf_terminate(), wrapping the __seq_buf_terminate() helper that
seq_buf_str() and seq_buf_strlen() already use, and convert those
callers. It returns void: returning the offset would just be
seq_buf_strlen() under another name. A zero-sized seq_buf is left
untouched, as in the other accessors.

Add tests for the three cases: room for the NUL after the data, an
overflowed buffer where it lands in the last byte, and a zero-sized
buffer that must not be written to.

Build tested ARCH=x86_64 defconfig with GCC 16.2.0, plus
CONFIG_HIST_TRIGGERS=y and CONFIG_BPF_SYSCALL=y to reach the converted
call sites in kernel/trace/trace_events_hist.c and
kernel/bpf/diagnostics.c. Tests run 24/24 passing on ARCH=um.

Assisted-by: LLM
Acked-by: Alexei Starovoitov <ast@kernel.org>
Link: https://patch.msgid.link/20261005155708.1471260-7-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>

Several strlcat() call sites being converted to seq_buf need behavior
seq_buf doesn't currently provide. The return from seq_buf_used() is
not the length of the string in a seq_buf. Once the buffer is full or
has overflowed it returns the buffer size, which counts the byte that
seq_buf_str() replaces with the NUL, so a caller that needs the string
and its length has to call seq_buf_str() and then walk the string with
strlen().

Move the termination out of seq_buf_str() into a helper that returns
where it put the NUL, and add seq_buf_strlen(), which terminates the
buffer in the same way and returns that offset.

As discussed in review, don't add WARN_ON() for seq_buf_strlen() and
drop it from seq_buf_str().

Add tests comparing seq_buf_strlen() against strlen() of seq_buf_str()
for empty, appended, truncated, exactly full, and overflowed buffers,
checking that seq_buf_strlen() alone terminates a full buffer, and
checking that a zero-sized seq_buf reports an empty string from both
accessors without touching the buffer.

Tests passed under qemu on ARCH=x86_64 with GCC 16.2.0 and CONFIG_KASAN=y,
and on big-endian ARCH=s390 with GCC s390x-linux-gnu 16.2.0.

Assisted-by: LLM
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20261005155708.1471260-6-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>