Pull Zstd fix from Nick Terrell:
 "Only a single line change to fix a benign UBSAN warning"

* tag 'zstd-linus-v6.7-rc2' of https://github.com/terrelln/linux:
  zstd: Fix array-index-out-of-bounds UBSAN warning

Zstd used an array of length 1 to mean a flexible array for C89
compatibility. Switch to a C99 flexible array to fix the UBSAN warning.

Tested locally by booting the kernel and writing to and reading from a
BtrFS filesystem with zstd compression enabled. I was unable to reproduce
the issue before the fix, however it is a trivial change.

Link: https://lkml.kernel.org/r/20231012213428.1390905-1-nickrterrell@gmail.com
Reported-by: syzbot+1f2eb3e8cd123ffce499@syzkaller.appspotmail.com
Reported-by: Eric Biggers <ebiggers@kernel.org>
Reported-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Nick Terrell <terrelln@fb.com>
Reviewed-by: Kees Cook <keescook@chromium.org>

Kernel test robot reported build warnings that structures g_ot_sync_ops,
g_ot_async_ops and g_testcases should be static. These definitions are
only used in test_objpool.c, so make them static

Link: https://lore.kernel.org/all/20231108012248.313574-1-wuqiang.matt@bytedance.com/

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202311071229.WGrWUjM1-lkp@intel.com/

Signed-off-by: wuqiang.matt <wuqiang.matt@bytedance.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>

Pull more bcachefs updates from Kent Overstreet:
 "Here's the second big bcachefs pull request. This brings your tree up
  to date with my master branch, which is what existing bcachefs users
  are currently running.

  New features:
   - rebalance_work btree (and metadata version 1.3): the rebalance
     thread no longer has to scan to find extents that need processing -
     big scalability improvement.
   - sb_errors superblock section: this adds counters for each fsck
     error type, since filesystem creation, along with the date of the
     most recent error. It'll get us better bug reports (since users do
     not typically report errors that fsck was able to fix), and I might
     add telemetry for this in the future.

  Fixes include:
   - multiple snapshot deletion fixes
   - members_v2 fixups
   - deleted_inodes btree fixes
   - copygc thread no longer spins when a device is full but has no
     fragmented buckets (i.e. rebalance needs to move data around
     instead)
   - a fix for a memory reclaim issue with the btree key cache: we're
     now careful not to hold the srcu read lock that blocks key cache
     reclaim for too long
   - an early allocator locking fix, from Brian
   - endianness fixes, from Brian
   - CONFIG_BCACHEFS_DEBUG_TRANSACTIONS no longer defaults to y, a big
     performance improvement on multithreaded workloads"

* tag 'bcachefs-2023-11-5' of https://evilpiepirate.org/git/bcachefs: (70 commits)
  bcachefs: Improve stripe checksum error message
  bcachefs: Simplify, fix bch2_backpointer_get_key()
  bcachefs: kill thing_it_points_to arg to backpointer_not_found()
  bcachefs: bch2_ec_read_extent() now takes btree_trans
  bcachefs: bch2_stripe_to_text() now prints ptr gens
  bcachefs: Don't iterate over journal entries just for btree roots
  bcachefs: Break up bch2_journal_write()
  bcachefs: Replace ERANGE with private error codes
  bcachefs: bkey_copy() is no longer a macro
  bcachefs: x-macro-ify inode flags enum
  bcachefs: Convert bch2_fs_open() to darray
  bcachefs: Move __bch2_members_v2_get_mut to sb-members.h
  bcachefs: bch2_prt_datetime()
  bcachefs: CONFIG_BCACHEFS_DEBUG_TRANSACTIONS no longer defaults to y
  bcachefs: Add a comment for BTREE_INSERT_NOJOURNAL usage
  bcachefs: rebalance_work btree is not a snapshots btree
  bcachefs: Add missing printk newlines
  bcachefs: Fix recovery when forced to use JSET_NO_FLUSH journal entry
  bcachefs: .get_parent() should return an error pointer
  bcachefs: Fix bch2_delete_dead_inodes()
  ...

Pull CXL (Compute Express Link) updates from Dan Williams:
 "The main new functionality this time is work to allow Linux to
  natively handle CXL link protocol errors signalled via PCIe AER for
  current generation CXL platforms. This required some enlightenment of
  the PCIe AER core to workaround the fact that current generation RCH
  (Restricted CXL Host) platforms physically hide topology details and
  registers via a mechanism called RCRB (Root Complex Register Block).

  The next major highlight is reworks to address bugs in parsing region
  configurations for next generation VH (Virtual Host) topologies. The
  old broken algorithm is replaced with a simpler one that significantly
  increases the number of region configurations supported by Linux. This
  is again relevant for error handling so that forward and reverse
  address translation of memory errors can be carried out by Linux for
  memory regions instantiated by platform firmware.

  As for other cross-tree work, the ACPI table parsing code has been
  refactored for reuse parsing the "CDAT" structure which is an
  ACPI-like data structure that is reported by CXL devices. That work is
  in preparation for v6.8 support for CXL QoS. Think of this as dynamic
  generation of NUMA node topology information generated by Linux rather
  than platform firmware.

  Lastly, a number of internal object lifetime issues have been resolved
  along with misc. fixes and feature updates (decoders_committed sysfs
  ABI).

  Summary:

   - Add support for RCH (Restricted CXL Host) Error recovery

   - Fix several region assembly bugs

   - Fix mem-device lifetime issues relative to the sanitize command and
     RCH topology.

   - Refactor ACPI table parsing for CDAT parsing re-use in preparation
     for CXL QOS support"

* tag 'cxl-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (50 commits)
  lib/fw_table: Remove acpi_parse_entries_array() export
  cxl/pci: Change CXL AER support check to use native AER
  cxl/hdm: Remove broken error path
  cxl/hdm: Fix && vs || bug
  acpi: Move common tables helper functions to common lib
  cxl: Add support for reading CXL switch CDAT table
  cxl: Add checksum verification to CDAT from CXL
  cxl: Export QTG ids from CFMWS to sysfs as qos_class attribute
  cxl: Add decoders_committed sysfs attribute to cxl_port
  cxl: Add cxl_decoders_committed() helper
  cxl/core/regs: Rework cxl_map_pmu_regs() to use map->dev for devm
  cxl/core/regs: Rename phys_addr in cxl_map_component_regs()
  PCI/AER: Unmask RCEC internal errors to enable RCH downstream port error handling
  PCI/AER: Forward RCH downstream port-detected errors to the CXL.mem dev handler
  cxl/pci: Disable root port interrupts in RCH mode
  cxl/pci: Add RCH downstream port error logging
  cxl/pci: Map RCH downstream AER registers for logging protocol errors
  cxl/pci: Update CXL error logging to use RAS register address
  PCI/AER: Refactor cper_print_aer() for use by CXL driver module
  cxl/pci: Add RCH downstream port AER register discovery
  ...

Pull powerpc updates from Michael Ellerman:

 - Add support for KVM running as a nested hypervisor under development
   versions of PowerVM, using the new PAPR nested virtualisation API

 - Add support for the BPF prog pack allocator

 - A rework of the non-server MMU handling to support execute-only on
   all platforms

 - Some optimisations & cleanups for the powerpc qspinlock code

 - Various other small features and fixes

Thanks to Aboorva Devarajan, Aditya Gupta, Amit Machhiwal, Benjamin
Gray, Christophe Leroy, Dr. David Alan Gilbert, Gaurav Batra, Gautam
Menghani, Geert Uytterhoeven, Haren Myneni, Hari Bathini, Joel Stanley,
Jordan Niethe, Julia Lawall, Kautuk Consul, Kuan-Wei Chiu, Michael
Neuling, Minjie Du, Muhammad Muzammil, Naveen N Rao, Nicholas Piggin,
Nick Child, Nysal Jan K.A, Peter Lafreniere, Rob Herring, Sachin Sant,
Sebastian Andrzej Siewior, Shrikanth Hegde, Srikar Dronamraju, Stanislav
Kinsburskii, Vaibhav Jain, Wang Yufen, Yang Yingliang, and Yuan Tan.

* tag 'powerpc-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (100 commits)
  powerpc/vmcore: Add MMU information to vmcoreinfo
  Revert "powerpc: add `cur_cpu_spec` symbol to vmcoreinfo"
  powerpc/bpf: use bpf_jit_binary_pack_[alloc|finalize|free]
  powerpc/bpf: rename powerpc64_jit_data to powerpc_jit_data
  powerpc/bpf: implement bpf_arch_text_invalidate for bpf_prog_pack
  powerpc/bpf: implement bpf_arch_text_copy
  powerpc/code-patching: introduce patch_instructions()
  powerpc/32s: Implement local_flush_tlb_page_psize()
  powerpc/pseries: use kfree_sensitive() in plpks_gen_password()
  powerpc/code-patching: Perform hwsync in __patch_instruction() in case of failure
  powerpc/fsl_msi: Use device_get_match_data()
  powerpc: Remove cpm_dp...() macros
  powerpc/qspinlock: Rename yield_propagate_owner tunable
  powerpc/qspinlock: Propagate sleepy if previous waiter is preempted
  powerpc/qspinlock: don't propagate the not-sleepy state
  powerpc/qspinlock: propagate owner preemptedness rather than CPU number
  powerpc/qspinlock: stop queued waiters trying to set lock sleepy
  powerpc/perf: Fix disabling BHRB and instruction sampling
  powerpc/trace: Add support for HAVE_FUNCTION_ARG_ACCESS_API
  powerpc/tools: Pass -mabi=elfv2 to gcc-check-mprofile-kernel.sh
  ...

Pull tracing updates from Steven Rostedt:

 - Remove eventfs_file descriptor

   This is the biggest change, and the second part of making eventfs
   create its files dynamically.

   In 6.6 the first part was added, and that maintained a one to one
   mapping between eventfs meta descriptors and the directories and file
   inodes and dentries that were dynamically created. The directories
   were represented by a eventfs_inode and the files were represented by
   a eventfs_file.

   In v6.7 the eventfs_file is removed. As all events have the same
   directory make up (sched_switch has an "enable", "id", "format", etc
   files), the handing of what files are underneath each leaf eventfs
   directory is moved back to the tracing subsystem via a callback.

   When an event is added to the eventfs, it registers an array of
   evenfs_entry's. These hold the names of the files and the callbacks
   to call when the file is referenced. The callback gets the name so
   that the same callback may be used by multiple files. The callback
   then supplies the filesystem_operations structure needed to create
   this file.

   This has brought the memory footprint of creating multiple eventfs
   instances down by 2 megs each!

 - User events now has persistent events that are not associated to a
   single processes. These are privileged events that hang around even
   if no process is attached to them

 - Clean up of seq_buf

   There's talk about using seq_buf more to replace strscpy() and
   friends. But this also requires some minor modifications of seq_buf
   to be able to do this

 - Expand instance ring buffers individually

   Currently if boot up creates an instance, and a trace event is
   enabled on that instance, the ring buffer for that instance and the
   top level ring buffer are expanded (1.4 MB per CPU). This wastes
   memory as this happens when nothing is using the top level instance

 - Other minor clean ups and fixes

* tag 'trace-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (34 commits)
  seq_buf: Export seq_buf_puts()
  seq_buf: Export seq_buf_putc()
  eventfs: Use simple_recursive_removal() to clean up dentries
  eventfs: Remove special processing of dput() of events directory
  eventfs: Delete eventfs_inode when the last dentry is freed
  eventfs: Hold eventfs_mutex when calling callback functions
  eventfs: Save ownership and mode
  eventfs: Test for ei->is_freed when accessing ei->dentry
  eventfs: Have a free_ei() that just frees the eventfs_inode
  eventfs: Remove "is_freed" union with rcu head
  eventfs: Fix kerneldoc of eventfs_remove_rec()
  tracing: Have the user copy of synthetic event address use correct context
  eventfs: Remove extra dget() in eventfs_create_events_dir()
  tracing: Have trace_event_file have ref counters
  seq_buf: Introduce DECLARE_SEQ_BUF and seq_buf_str()
  eventfs: Fix typo in eventfs_inode union comment
  eventfs: Fix WARN_ON() in create_file_dentry()
  powerpc: Remove initialisation of readpos
  tracing/histograms: Simplify last_cmd_set()
  seq_buf: fix a misleading comment
  ...

Pull printk updates from Petr Mladek:

 - Another preparation step for introducing printk kthreads. The main
   piece is a per-console lock with several features:

    - Support three priorities: normal, emergency, and panic. They will
      be defined by a context where the lock is taken. A context with a
      higher priority is allowed to take over the lock from a context
      with a lower one.

      The plan is to use the emergency context for Oops and WARN()
      messages, and also by watchdogs.

      The panic() context will be used on panic CPU.

    - The owner might enter/exit regions where it is not safe to take
      over the lock. It allows the take over the lock a safe way in the
      middle of a message.

      For example, serial drivers emit characters one by one. And the
      serial port is in a safe state in between.

      Only the final console_flush_in_panic() will be allowed to take
      over the lock even in the unsafe state (last chance, pray, and
      hope).

    - A higher priority context might busy wait with a timeout. The
      current owner is informed about the waiter and releases the lock
      on exit from the unsafe state.

    - The new lock is safe even in atomic contexts, including NMI.

   Another change is a safe manipulation of per-console sequence number
   counter under the new lock.

 - simple_strntoull() micro-optimization

 - Reduce pr_flush() pooling time.

 - Calm down false warning about possible buffer invalid access to
   console buffers when CONFIG_PRINTK is disabled.

[ .. and Thomas Gleixner wants to point out that while several of the
  commits are attributed to him, he only authored the early versions of
  said commits, and that John Ogness and Petr Mladek have been the ones
  who sorted out the details and really should be those who get the
  credit   - Linus ]

* tag 'printk-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  vsprintf: uninline simple_strntoull(), reorder arguments
  printk: printk: Remove unnecessary statements＇len = 0;＇
  printk: Reduce pr_flush() pooling time
  printk: fix illegal pbufs access for !CONFIG_PRINTK
  printk: nbcon: Allow drivers to mark unsafe regions and check state
  printk: nbcon: Add emit function and callback function for atomic printing
  printk: nbcon: Add sequence handling
  printk: nbcon: Add ownership state functions
  printk: nbcon: Add buffer management
  printk: Make static printk buffers available to nbcon
  printk: nbcon: Add acquire/release logic
  printk: Add non-BKL (nbcon) console basic infrastructure

Pull bitmap updates from Yury Norov:
 "This includes the 'bitmap: cleanup bitmap_*_region() implementation'
  series, and scattered cleanup patches"

* tag 'bitmap-for-6.7' of https://github.com/norov/linux:
  buildid: reduce header file dependencies for module
  bitmap: move bitmap_*_region() functions to bitmap.h
  bitmap: drop _reg_op() function
  bitmap: replace _reg_op(REG_OP_ISFREE) with find_next_bit()
  bitmap: replace _reg_op(REG_OP_RELEASE) with bitmap_clear()
  bitmap: replace _reg_op(REG_OP_ALLOC) with bitmap_set()
  bitmap: fix opencoded bitmap_allocate_region()
  bitmap: add test for bitmap_*_region() functions
  bitmap: align __reg_op() wrappers with modern coding style
  lib/bitmap: split-out string-related operations to a separate files
  bitmap: Remove dead code, i.e. bitmap_copy_le()
  bitmap: Fix a typo ("identify map")
  cpumask: kernel-doc cleanups and additions

Pull non-MM updates from Andrew Morton:
 "As usual, lots of singleton and doubleton patches all over the tree
  and there's little I can say which isn't in the individual changelogs.

  The lengthier patch series are

   - 'kdump: use generic functions to simplify crashkernel reservation
     in arch', from Baoquan He. This is mainly cleanups and
     consolidation of the 'crashkernel=' kernel parameter handling

   - After much discussion, David Laight's 'minmax: Relax type checks in
     min() and max()' is here. Hopefully reduces some typecasting and
     the use of min_t() and max_t()

   - A group of patches from Oleg Nesterov which clean up and slightly
     fix our handling of reads from /proc/PID/task/... and which remove
     task_struct.thread_group"

* tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (64 commits)
  scripts/gdb/vmalloc: disable on no-MMU
  scripts/gdb: fix usage of MOD_TEXT not defined when CONFIG_MODULES=n
  .mailmap: add address mapping for Tomeu Vizoso
  mailmap: update email address for Claudiu Beznea
  tools/testing/selftests/mm/run_vmtests.sh: lower the ptrace permissions
  .mailmap: map Benjamin Poirier's address
  scripts/gdb: add lx_current support for riscv
  ocfs2: fix a spelling typo in comment
  proc: test ProtectionKey in proc-empty-vm test
  proc: fix proc-empty-vm test with vsyscall
  fs/proc/base.c: remove unneeded semicolon
  do_io_accounting: use sig->stats_lock
  do_io_accounting: use __for_each_thread()
  ocfs2: replace BUG_ON() at ocfs2_num_free_extents() with ocfs2_error()
  ocfs2: fix a typo in a comment
  scripts/show_delta: add __main__ judgement before main code
  treewide: mark stuff as __ro_after_init
  fs: ocfs2: check status values
  proc: test /proc/${pid}/statm
  compiler.h: move __is_constexpr() to compiler.h
  ...