1. 13 May, 2024 19 commits
    • Linus Torvalds's avatar
      Merge tag 'vfs-6.10.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs · ef31ea6c
      Linus Torvalds authored
      Pull netfs updates from Christian Brauner:
       "This reworks the netfslib writeback implementation so that pages read
        from the cache are written to the cache through ->writepages(),
        thereby allowing the fscache page flag to be retired.
      
        The reworking also:
      
         - builds on top of the new writeback_iter() infrastructure
      
         - makes it possible to use vectored write RPCs as discontiguous
           streams of pages can be accommodated
      
         - makes it easier to do simultaneous content crypto and stream
           division
      
         - provides support for retrying writes and re-dividing a stream
      
         - replaces the ->launder_folio() op, so that ->writepages() is used
           instead
      
         - uses mempools to allocate the netfs_io_request and
           netfs_io_subrequest structs to avoid allocation failure in the
           writeback path
      
        Some code that uses the fscache page flag is retained for
        compatibility purposes with nfs and ceph. The code is switched to
        using the synonymous private_2 label instead and marked with
        deprecation comments.
      
        The merge commit contains additional details on the new algorithm that
        I've left out of here as it would probably be excessively detailed.
      
        On top of the netfslib infrastructure this contains the work to
        convert cifs over to netfslib"
      
      * tag 'vfs-6.10.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (38 commits)
        cifs: Enable large folio support
        cifs: Remove some code that's no longer used, part 3
        cifs: Remove some code that's no longer used, part 2
        cifs: Remove some code that's no longer used, part 1
        cifs: Cut over to using netfslib
        cifs: Implement netfslib hooks
        cifs: Make add_credits_and_wake_if() clear deducted credits
        cifs: Add mempools for cifs_io_request and cifs_io_subrequest structs
        cifs: Set zero_point in the copy_file_range() and remap_file_range()
        cifs: Move cifs_loose_read_iter() and cifs_file_write_iter() to file.c
        cifs: Replace the writedata replay bool with a netfs sreq flag
        cifs: Make wait_mtu_credits take size_t args
        cifs: Use more fields from netfs_io_subrequest
        cifs: Replace cifs_writedata with a wrapper around netfs_io_subrequest
        cifs: Replace cifs_readdata with a wrapper around netfs_io_subrequest
        cifs: Use alternative invalidation to using launder_folio
        netfs, afs: Use writeback retry to deal with alternate keys
        netfs: Miscellaneous tidy ups
        netfs: Remove the old writeback code
        netfs: Cut over to using new writeback code
        ...
      ef31ea6c
    • Linus Torvalds's avatar
      Merge tag 'vfs-6.10.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs · 103fb219
      Linus Torvalds authored
      Pull vfs mount API conversions from Christian Brauner:
       "This converts qnx6, minix, debugfs, tracefs, freevxfs, and openpromfs
        to the new mount api, further reducing the number of filesystems
        relying on the legacy mount api"
      
      * tag 'vfs-6.10.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
        minix: convert minix to use the new mount api
        vfs: Convert tracefs to use the new mount API
        vfs: Convert debugfs to use the new mount API
        openpromfs: finish conversion to the new mount API
        freevxfs: Convert freevxfs to the new mount API.
        qnx6: convert qnx6 to use the new mount api
      103fb219
    • Linus Torvalds's avatar
      Merge tag 'vfs-6.10.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs · 1b0aabcc
      Linus Torvalds authored
      Pull misc vfs updates from Christian Brauner:
       "This contains the usual miscellaneous features, cleanups, and fixes
        for vfs and individual fses.
      
        Features:
      
         - Free up FMODE_* bits. I've freed up bits 6, 7, 8, and 24. That
           means we now have six free FMODE_* bits in total (but bit #6
           already got used for FMODE_WRITE_RESTRICTED)
      
         - Add FOP_HUGE_PAGES flag (follow-up to FMODE_* cleanup)
      
         - Add fd_raw cleanup class so we can make use of automatic cleanup
           provided by CLASS(fd_raw, f)(fd) for O_PATH fds as well
      
         - Optimize seq_puts()
      
         - Simplify __seq_puts()
      
         - Add new anon_inode_getfile_fmode() api to allow specifying f_mode
           instead of open-coding it in multiple places
      
         - Annotate struct file_handle with __counted_by() and use
           struct_size()
      
         - Warn in get_file() whether f_count resurrection from zero is
           attempted (epoll/drm discussion)
      
         - Folio-sophize aio
      
         - Export the subvolume id in statx() for both btrfs and bcachefs
      
         - Relax linkat(AT_EMPTY_PATH) requirements
      
         - Add F_DUPFD_QUERY fcntl() allowing to compare two file descriptors
           for dup*() equality replacing kcmp()
      
        Cleanups:
      
         - Compile out swapfile inode checks when swap isn't enabled
      
         - Use (1 << n) notation for FMODE_* bitshifts for clarity
      
         - Remove redundant variable assignment in fs/direct-io
      
         - Cleanup uses of strncpy in orangefs
      
         - Speed up and cleanup writeback
      
         - Move fsparam_string_empty() helper into header since it's currently
           open-coded in multiple places
      
         - Add kernel-doc comments to proc_create_net_data_write()
      
         - Don't needlessly read dentry->d_flags twice
      
        Fixes:
      
         - Fix out-of-range warning in nilfs2
      
         - Fix ecryptfs overflow due to wrong encryption packet size
           calculation
      
         - Fix overly long line in xfs file_operations (follow-up to FMODE_*
           cleanup)
      
         - Don't raise FOP_BUFFER_{R,W}ASYNC for directories in xfs (follow-up
           to FMODE_* cleanup)
      
         - Don't call xfs_file_open from xfs_dir_open (follow-up to FMODE_*
           cleanup)
      
         - Fix stable offset api to prevent endless loops
      
         - Fix afs file server rotations
      
         - Prevent xattr node from overflowing the eraseblock in jffs2
      
         - Move fdinfo PTRACE_MODE_READ procfs check into the .permission()
           operation instead of .open() operation since this caused userspace
           regressions"
      
      * tag 'vfs-6.10.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (39 commits)
        afs: Fix fileserver rotation getting stuck
        selftests: add F_DUPDFD_QUERY selftests
        fcntl: add F_DUPFD_QUERY fcntl()
        file: add fd_raw cleanup class
        fs: WARN when f_count resurrection is attempted
        seq_file: Simplify __seq_puts()
        seq_file: Optimize seq_puts()
        proc: Move fdinfo PTRACE_MODE_READ check into the inode .permission operation
        fs: Create anon_inode_getfile_fmode()
        xfs: don't call xfs_file_open from xfs_dir_open
        xfs: drop fop_flags for directories
        xfs: fix overly long line in the file_operations
        shmem: Fix shmem_rename2()
        libfs: Add simple_offset_rename() API
        libfs: Fix simple_offset_rename_exchange()
        jffs2: prevent xattr node from overflowing the eraseblock
        vfs, swap: compile out IS_SWAPFILE() on swapless configs
        vfs: relax linkat() AT_EMPTY_PATH - aka flink() - requirements
        fs/direct-io: remove redundant assignment to variable retval
        fs/dcache: Re-use value stored to dentry->d_flags instead of re-reading
        ...
      1b0aabcc
    • Linus Torvalds's avatar
      Merge tag 'vfs-6.10.iomap' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs · c117a437
      Linus Torvalds authored
      Pull vfs iomap updates from Christian Brauner:
       "This contains a few cleanups to the iomap code. Nothing particularly
        stands out"
      
      * tag 'vfs-6.10.iomap' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
        iomap: do some small logical cleanup in buffered write
        iomap: make iomap_write_end() return a boolean
        iomap: use a new variable to handle the written bytes in iomap_write_iter()
        iomap: don't increase i_size if it's not a write operation
        iomap: drop the write failure handles when unsharing and zeroing
        iomap: convert iomap_writepages to writeack_iter
      c117a437
    • Linus Torvalds's avatar
      Merge tag 'docs-6.10' of git://git.lwn.net/linux · 8815da98
      Linus Torvalds authored
      Pull documentation updates from Jonathan Corbet:
       "Another not-too-busy cycle for documentation, including:
      
         - Some build-system changes to detect the variable fonts installed by
           some distributions that can break the PDF build.
      
         - Various updates and additions to the Spanish, Chinese, Italian, and
           Japanese translations.
      
         - Update the stable-kernel rules to match modern practice
      
        ... and the usual array of corrections, updates, and typo fixes"
      
      * tag 'docs-6.10' of git://git.lwn.net/linux: (42 commits)
        cgroup: Add documentation for missing zswap memory.stat
        kernel-doc: Added "*" in $type_constants2 to fix 'make htmldocs' warning.
        docs:core-api: fixed typos and grammar in printk-index page
        Documentation: tracing: Fix spelling mistakes
        docs/zh_CN/rust: Update the translation of quick-start to 6.9-rc4
        docs/zh_CN/rust: Update the translation of general-information to 6.9-rc4
        docs/zh_CN/rust: Update the translation of coding-guidelines to 6.9-rc4
        docs/zh_CN/rust: Update the translation of arch-support to 6.9-rc4
        docs: stable-kernel-rules: fix typo sent->send
        docs/zh_CN: remove two inconsistent spaces
        docs: scripts/check-variable-fonts.sh: Improve commands for detection
        docs: stable-kernel-rules: create special tag to flag 'no backporting'
        docs: stable-kernel-rules: explain use of stable@kernel.org (w/o @vger.)
        docs: stable-kernel-rules: remove code-labels tags and a indention level
        docs: stable-kernel-rules: call mainline by its name and change example
        docs: stable-kernel-rules: reduce redundancy
        docs, kprobes: Add riscv as supported architecture
        Docs: typos/spelling
        docs: kernel_include.py: Cope with docutils 0.21
        docs: ja_JP/howto: Catch up update in v6.8
        ...
      8815da98
    • Linus Torvalds's avatar
      Merge tag 'keys-next-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd · 25c73642
      Linus Torvalds authored
      Pull keys updates from Jarkko Sakkinen:
      
       - do not overwrite the key expiration once it is set
      
       - move key quota updates earlier into key_put(), instead of updating
         them in key_gc_unused_keys()
      
      * tag 'keys-next-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
        keys: Fix overwrite of key expiration on instantiation
        keys: update key quotas in key_put()
      25c73642
    • Linus Torvalds's avatar
      Merge tag 'tpmdd-next-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd · b1923914
      Linus Torvalds authored
      Pull TPM updates from Jarkko Sakkinen:
       "These are the changes for the TPM driver with a single major new
        feature: TPM bus encryption and integrity protection. The key pair on
        TPM side is generated from so called null random seed per power on of
        the machine [1]. This supports the TPM encryption of the hard drive by
        adding layer of protection against bus interposer attacks.
      
        Other than that, a few minor fixes and documentation for tpm_tis to
        clarify basics of TPM localities for future patch review discussions
        (will be extended and refined over times, just a seed)"
      
      Link: https://lore.kernel.org/linux-integrity/20240429202811.13643-1-James.Bottomley@HansenPartnership.com/ [1]
      
      * tag 'tpmdd-next-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd: (28 commits)
        Documentation: tpm: Add TPM security docs toctree entry
        tpm: disable the TPM if NULL name changes
        Documentation: add tpm-security.rst
        tpm: add the null key name as a sysfs export
        KEYS: trusted: Add session encryption protection to the seal/unseal path
        tpm: add session encryption protection to tpm2_get_random()
        tpm: add hmac checks to tpm2_pcr_extend()
        tpm: Add the rest of the session HMAC API
        tpm: Add HMAC session name/handle append
        tpm: Add HMAC session start and end functions
        tpm: Add TCG mandated Key Derivation Functions (KDFs)
        tpm: Add NULL primary creation
        tpm: export the context save and load commands
        tpm: add buffer function to point to returned parameters
        crypto: lib - implement library version of AES in CFB mode
        KEYS: trusted: tpm2: Use struct tpm_buf for sized buffers
        tpm: Add tpm_buf_read_{u8,u16,u32}
        tpm: TPM2B formatted buffers
        tpm: Store the length of the tpm_buf data separately.
        tpm: Update struct tpm_buf documentation comments
        ...
      b1923914
    • Linus Torvalds's avatar
      Merge tag 'keys-trusted-next-6.10-rc1' of... · c0248148
      Linus Torvalds authored
      Merge tag 'keys-trusted-next-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd
      
      Pull trusted keys updates from Jarkko Sakkinen:
       "This contains a new key type for the Data Co-Processor (DCP), which is
        an IP core built into many NXP SoCs such as i.mx6ull"
      
      * tag 'keys-trusted-next-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
        docs: trusted-encrypted: add DCP as new trust source
        docs: document DCP-backed trusted keys kernel params
        MAINTAINERS: add entry for DCP-based trusted keys
        KEYS: trusted: Introduce NXP DCP-backed trusted keys
        KEYS: trusted: improve scalability of trust source config
        crypto: mxs-dcp: Add support for hardware-bound keys
      c0248148
    • Linus Torvalds's avatar
      Merge tag 'slab-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab · cd97950c
      Linus Torvalds authored
      Pull slab updates from Vlastimil Babka:
       "This time it's mostly random cleanups and fixes, with two performance
        fixes that might have significant impact, but limited to systems
        experiencing particular bad corner case scenarios rather than general
        performance improvements.
      
        The memcg hook changes are going through the mm tree due to
        dependencies.
      
         - Prevent stalls when reading /proc/slabinfo (Jianfeng Wang)
      
           This fixes the long-standing problem that can happen with workloads
           that have alloc/free patterns resulting in many partially used
           slabs (in e.g. dentry cache). Reading /proc/slabinfo will traverse
           the long partial slab list under spinlock with disabled irqs and
           thus can stall other processes or even trigger the lockup
           detection. The traversal is only done to count free objects so that
           <active_objs> column can be reported along with <num_objs>.
      
           To avoid affecting fast paths with another shared counter
           (attempted in the past) or complex partial list traversal schemes
           that allow rescheduling, the chosen solution resorts to
           approximation - when the partial list is over 10000 slabs long, we
           will only traverse first 5000 slabs from head and tail each and use
           the average of those to estimate the whole list. Both head and tail
           are used as the slabs near head to tend to have more free objects
           than the slabs towards the tail.
      
           It is expected the approximation should not break existing
           /proc/slabinfo consumers. The <num_objs> field is still accurate
           and reflects the overall kmem_cache footprint. The <active_objs>
           was already imprecise due to cpu and percpu-partial slabs, so can't
           be relied upon to determine exact cache usage. The difference
           between <active_objs> and <num_objs> is mainly useful to determine
           the slab fragmentation, and that will be possible even with the
           approximation in place.
      
         - Prevent allocating many slabs when a NUMA node is full (Chen Jun)
      
           Currently, on NUMA systems with a node under significantly bigger
           pressure than other nodes, the fallback strategy may result in each
           kmalloc_node() that can't be safisfied from the preferred node, to
           allocate a new slab on a fallback node, and not reuse the slabs
           already on that node's partial list.
      
           This is now fixed and partial lists of fallback nodes are checked
           even for kmalloc_node() allocations. It's still preferred to
           allocate a new slab on the requested node before a fallback, but
           only with a GFP_NOWAIT attempt, which will fail quickly when the
           node is under a significant memory pressure.
      
         - More SLAB removal related cleanups (Xiu Jianfeng, Hyunmin Lee)
      
         - Fix slub_kunit self-test with hardened freelists (Guenter Roeck)
      
         - Mark racy accesses for KCSAN (linke li)
      
         - Misc cleanups (Xiongwei Song, Haifeng Xu, Sangyun Kim)"
      
      * tag 'slab-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
        mm/slub: remove the check for NULL kmalloc_caches
        mm/slub: create kmalloc 96 and 192 caches regardless cache size order
        mm/slub: mark racy access on slab->freelist
        slub: use count_partial_free_approx() in slab_out_of_memory()
        slub: introduce count_partial_free_approx()
        slub: Set __GFP_COMP in kmem_cache by default
        mm/slub: remove duplicate initialization for early_kmem_cache_node_alloc()
        mm/slub: correct comment in do_slab_free()
        mm/slub, kunit: Use inverted data to corrupt kmem cache
        mm/slub: simplify get_partial_node()
        mm/slub: add slub_get_cpu_partial() helper
        mm/slub: remove the check of !kmem_cache_has_cpu_partial()
        mm/slub: Reduce memory consumption in extreme scenarios
        mm/slub: mark racy accesses on slab->slabs
        mm/slub: remove dummy slabinfo functions
      cd97950c
    • Linus Torvalds's avatar
      Merge tag 'kcsan.2024.05.10a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu · c07ea940
      Linus Torvalds authored
      Pull kcsan update from Paul McKenney:
       "Introduce __data_racy type qualifier
      
        This adds a __data_racy type qualifier that enables kernel developers
        to inform KCSAN that a given variable is a shared variable without
        needing to mark each and every access.
      
        This allows pre-KCSAN code to be correctly (if approximately)
        instrumented withh very little effort, and also provides people
        reading the code a clear indication that the variable is in fact
        shared.
      
        In addition, it permits incremental transition to per-access KCSAN
        marking, so that (for example) a given subsystem can be transitioned
        one variable at a time, while avoiding large numbers of KCSAN warnings
        during this transition"
      
      * tag 'kcsan.2024.05.10a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
        kcsan, compiler_types: Introduce __data_racy type qualifier
      c07ea940
    • Linus Torvalds's avatar
      Merge tag 'lkmm.2024.05.10a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu · ee202601
      Linus Torvalds authored
      Pull LKMM documentation updates from Paul McKenney:
       "This upgrades LKMM documentation, perhaps most notably adding a number
        of litmus tests illustrating cmpxchg() ordering properties.
      
        TL;DR: Failing cmpxchg() operations provide no ordering"
      
      * tag 'lkmm.2024.05.10a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
        Documentation/litmus-tests: Make cmpxchg() tests safe for klitmus
        Documentation/atomic_t: Emphasize that failed atomic operations give no ordering
        Documentation/litmus-tests: Demonstrate unordered failing cmpxchg
        Documentation/litmus-tests: Add locking tests to README
      ee202601
    • Linus Torvalds's avatar
      Merge tag 'cmpxchg.2024.05.11a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu · 2e57d1d6
      Linus Torvalds authored
      Pull cmpxchg updates from Paul McKenney:
       "Provide one-byte and two-byte cmpxchg() support on sparc32, parisc,
        and csky
      
        This provides native one-byte and two-byte cmpxchg() support for
        sparc32 and parisc, courtesy of Al Viro. This support is provided by
        the same hashed-array-of-locks technique used for the other atomic
        operations provided for these two platforms.
      
        There is also emulated one-byte cmpxchg() support for csky using a new
        cmpxchg_emu_u8() function that uses a four-byte cmpxchg() to emulate
        the one-byte variant.
      
        Similar patches for emulation of one-byte cmpxchg() for arc, sh, and
        xtensa have not yet received maintainer acks, so they are slated for
        the v6.11 merge window"
      
      * tag 'cmpxchg.2024.05.11a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
        csky: Emulate one-byte cmpxchg
        lib: Add one-byte emulation function
        parisc: add u16 support to cmpxchg()
        parisc: add missing export of __cmpxchg_u8()
        parisc: unify implementations of __cmpxchg_u{8,32,64}
        parisc: __cmpxchg_u32(): lift conversion into the callers
        sparc32: add __cmpxchg_u{8,16}() and teach __cmpxchg() to handle those sizes
        sparc32: unify __cmpxchg_u{32,64}
        sparc32: make the first argument of __cmpxchg_u64() volatile u64 *
        sparc32: make __cmpxchg_u32() return u32
      2e57d1d6
    • Linus Torvalds's avatar
      Merge tag 'rcu.next.v6.10' of https://github.com/urezki/linux · c0b9620b
      Linus Torvalds authored
      Pull RCU updates from Uladzislau Rezki:
      
       - Fix a lockdep complain for lazy-preemptible kernel, remove redundant
         BH disable for TINY_RCU, remove redundant READ_ONCE() in tree.c, fix
         false positives KCSAN splat and fix buffer overflow in the
         print_cpu_stall_info().
      
       - Misc updates related to bpf, tracing and update the MAINTAINERS file.
      
       - An improvement of a normal synchronize_rcu() call in terms of
         latency. It maintains a separate track for sync. users only. This
         approach bypasses per-cpu nocb-lists thus sync-users do not depend on
         nocb-list length and how fast regular callbacks are processed.
      
       - RCU tasks: switch tasks RCU grace periods to sleep at TASK_IDLE
         priority, fix some comments, add some diagnostic warning to the
         exit_tasks_rcu_start() and fix a buffer overflow in the
         show_rcu_tasks_trace_gp_kthread().
      
       - RCU torture: Increase memory to guest OS, fix a Tasks Rude RCU
         testing, some updates for TREE09, dump mode information to debug GP
         kthread state, remove redundant READ_ONCE(), fix some comments about
         RCU_TORTURE_PIPE_LEN and pipe_count, remove some redundant pointer
         initialization, fix a hung splat task by when the rcutorture tests
         start to exit, fix invalid context warning, add '--do-kvfree'
         parameter to torture test and use slow register unregister callbacks
         only for rcutype test.
      
      * tag 'rcu.next.v6.10' of https://github.com/urezki/linux: (48 commits)
        rcutorture: Use rcu_gp_slow_register/unregister() only for rcutype test
        torture: Scale --do-kvfree test time
        rcutorture: Fix invalid context warning when enable srcu barrier testing
        rcutorture: Make stall-tasks directly exit when rcutorture tests end
        rcutorture: Removing redundant function pointer initialization
        rcutorture: Make rcutorture support print rcu-tasks gp state
        rcutorture: Use the gp_kthread_dbg operation specified by cur_ops
        rcutorture: Re-use value stored to ->rtort_pipe_count instead of re-reading
        rcutorture: Fix rcu_torture_one_read() pipe_count overflow comment
        rcutorture: Remove extraneous rcu_torture_pipe_update_one() READ_ONCE()
        rcu: Allocate WQ with WQ_MEM_RECLAIM bit set
        rcu: Support direct wake-up of synchronize_rcu() users
        rcu: Add a trace event for synchronize_rcu_normal()
        rcu: Reduce synchronize_rcu() latency
        rcu: Fix buffer overflow in print_cpu_stall_info()
        rcu: Mollify sparse with RCU guard
        rcu-tasks: Fix show_rcu_tasks_trace_gp_kthread buffer overflow
        rcu-tasks: Fix the comments for tasks_rcu_exit_srcu_stall_timer
        rcu-tasks: Replace exit_tasks_rcu_start() initialization with WARN_ON_ONCE()
        rcu: Remove redundant CONFIG_PROVE_RCU #if condition
        ...
      c0b9620b
    • Linus Torvalds's avatar
      Merge tag 'asm-generic-alpha' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic · 736676f5
      Linus Torvalds authored
      Pull alpha updates from Arnd Bergmann:
       "I had investigated dropping support for alpha EV5 and earlier a while
        ago after noticing that this is the only supported CPU family in the
        kernel without native byte access and that Debian has already dropped
        support for this generation last year [1] in order to improve
        performance for the newer machines.
      
        This topic came up again when Paul McKenney noticed that parts of the
        RCU code already rely on byte access and do not work on alpha EV5
        reliably, so we decided on using my series to avoid the problem
        entirely.
      
        Al Viro did another series for alpha to address all the known build
        issues. I rebased his patches without any further changes and included
        it as a baseline for my work here to avoid conflicts and allow
        backporting the fixes to stable kernels for the now removed hardware
        support as well"
      
      [ I dearly loved alpha back in the days, but the lack of byte and word
        operations was a horrible mistake and made everything worse -
        including very much the crazy IO contortions that resulted from it.
      
        It certainly wasn't the only mistake in the architecture, but it's the
        first-order issue.
      
        So while it's a bit sad to see the support for my first alpha go away,
        if you want to run museum hardware, maybe you should use museum
        kernels..    - Linus ]
      
      * tag 'asm-generic-alpha' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
        alpha: drop pre-EV56 support
        alpha: cabriolet: remove EV5 CPU support
        alpha: remove LCA and APECS based machines
        alpha: sable: remove early machine support
        alpha: remove DECpc AXP150 (Jensen) support
        alpha: trim the unused stuff from asm-offsets.c
        alpha: jensen, t2 - make __EXTERN_INLINE same as for the rest
        alpha: core_lca: take the unused functions out
        alpha: missing includes
        alpha: sys_sio: fix misspelled ifdefs
        alpha: don't make functions public without a reason
        alpha: add clone3() support
        alpha: fix modversions for strcpy() et.al.
        alpha: sort scr_mem{cpy,move}w() out
      736676f5
    • Linus Torvalds's avatar
      Merge tag 'soc-defconfig-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc · 6d1346f1
      Linus Torvalds authored
      Pull SoC defconfig updates from Arnd Bergmann:
       "Most of the changes enable additional device driver modules and arm64
        platforms. In addition, the usb onboard-device support and ext4
        security labels are turned on"
      
      * tag 'soc-defconfig-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (23 commits)
        arm64: defconfig: enable Airoha platform
        arm64: defconfig: enable Khadas TS050 panel as module
        arm64: defconfig: select INTERCONNECT_QCOM_SM6115 as built-in
        arm64: defconfig: Enable Tegra Security Engine
        arm64: defconfig: enable REGULATOR_QCOM_USB_VBUS
        ARM: imx_v6_v7_defconfig: Update ONBOARD_USB_HUB to ONBOAD_USB_DEV
        arm64: defconfig: enable ext4 security labels
        arm64: defconfig: qcom: enable X1E80100 sound card
        ARM: configs: sunxi: Enable DRM_DW_HDMI
        arm64: defconfig: build snd_bcm2835 as module
        arm64: defconfig: enable Rockchip Samsung USBDP PHY
        ARM: shmobile: defconfig: Refresh for v6.9-rc1
        arm64: defconfig: build ath12k as a module
        arm64: defconfig: Enable sc7280 display and gpu clock controllers
        ARM: imx_v6_v7_defconfig: Select CONFIG_USB_ONBOARD_HUB
        arm64: defconfig: Enable DRM_IMX8MP_DW_HDMI_BRIDGE as module
        arm64: defconfig: support Mali CSF-based GPUs
        arm64: defconfig: enable Rockchip RK3308 internal audio codec driver
        arm64: defconfig: Enable R9A09G057 SoC
        arm64: defconfig: Enable Renesas DA9062 PMIC
        ...
      6d1346f1
    • Linus Torvalds's avatar
      Merge tag 'soc-arm-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc · 0c221292
      Linus Torvalds authored
      Pull ARM SoC code changes from Arnd Bergmann:
       "The code changes are fairly minimal, there is a bit of conversion of
        the old orion5x platform to modern gpio descriptors, the Kconfig entry
        for the added EN7581 platform and a sysfs change for the i.MX PMU
        device"
      
      * tag 'soc-arm-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
        arm64: add Airoha EN7581 platform
        ARM: orion5x: Convert TS409 board to GPIO descriptors for LEDs
        ARM: orion5x: Convert Net2big board to GPIO descriptors for LEDs
        ARM: orion5x: Convert MV2120 board to GPIO descriptors for LEDs
        ARM: orion5x: Convert DNS323 board to GPIO descriptors for LEDs
        ARM: orion5x: Convert D2Net board to GPIO descriptors for LEDs
        ARM: imx: Assign parents for mmdc event_source devices
      0c221292
    • Linus Torvalds's avatar
      Merge tag 'soc-drivers-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc · 14a60290
      Linus Torvalds authored
      Pull SoC driver updates from Arnd Bergmann:
       "As usual, these are updates for drivers that are specific to certain
        SoCs or firmware running on them.
      
        Notable updates include
      
         - The new STMicroelectronics STM32 "firewall" bus driver that is used
           to provide a barrier between different parts of an SoC
      
         - Lots of updates for the Qualcomm platform drivers, in particular
           SCM, which gets a rewrite of its initialization code
      
         - Firmware driver updates for Arm FF-A notification interrupts and
           indirect messaging, SCMI firmware support for pin control and
           vendor specific interfaces, and TEE firmware interface changes
           across multiple TEE drivers
      
         - A larger cleanup of the Mediatek CMDQ driver and some related bits
      
         - Kconfig changes for riscv drivers to prepare for adding Kanaan k230
           support
      
         - Multiple minor updates for the TI sysc bus driver, memory
           controllers, hisilicon hccs and more"
      
      * tag 'soc-drivers-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (103 commits)
        firmware: qcom: uefisecapp: Allow on sc8180x Primus and Flex 5G
        soc: qcom: pmic_glink: Make client-lock non-sleeping
        dt-bindings: soc: qcom,wcnss: fix bluetooth address example
        soc/tegra: pmc: Add EQOS wake event for Tegra194 and Tegra234
        bus: stm32_firewall: fix off by one in stm32_firewall_get_firewall()
        bus: etzpc: introduce ETZPC firewall controller driver
        firmware: arm_ffa: Avoid queuing work when running on the worker queue
        bus: ti-sysc: Drop legacy idle quirk handling
        bus: ti-sysc: Drop legacy quirk handling for smartreflex
        bus: ti-sysc: Drop legacy quirk handling for uarts
        bus: ti-sysc: Add a description and copyrights
        bus: ti-sysc: Move check for no-reset-on-init
        soc: hisilicon: kunpeng_hccs: replace MAILBOX dependency with PCC
        soc: hisilicon: kunpeng_hccs: Add the check for obtaining complete port attribute
        firmware: arm_ffa: Fix memory corruption in ffa_msg_send2()
        bus: rifsc: introduce RIFSC firewall controller driver
        of: property: fw_devlink: Add support for "access-controller"
        soc: mediatek: mtk-socinfo: Correct the marketing name for MT8188GV
        soc: mediatek: mtk-socinfo: Add entry for MT8395AV/ZA Genio 1200
        soc: mediatek: mtk-mutex: Add support for MT8188 VPPSYS
        ...
      14a60290
    • Linus Torvalds's avatar
      Merge tag 'soc-dt-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc · 6c60000f
      Linus Torvalds authored
      Pull SoC devicetree updates from Arnd Bergmann:
       "The updates this time are a bit smaller than most times, mainly
        because it is not totally dominated by new Qualcomm hardware support.
      
        Instead, we larger than average updates for Rockchips, NXP, Allwinner
        and TI. The only two new SoCs this time are both from NXP and are
        minor variants of already supported ones.
      
        The updates for aspeed, amlogic and mediatek came a little late, so
        I'm saving those for part 2 in a few days if everything turns out
        fine.
      
        New machines this time contain:
      
         - two Broadcom SoC based wireless routers from Asus
      
         - Five allwinner based consumer devices for gaming, set-top-box and
           eboot reader applications
      
         - Three older phones based on Qualcomm chips, plus the more recent
           Sony Xperia 1 V
      
         - 14 industrial and embedded boards based on NXP i.MX6, i.MX8,
           layerscape and s32g3 SoCs
      
         - six rockchips boards including another handheld game console and a
           few single-board computers
      
        On top of these, we have the usual cleanups for dtc warnings and
        updates to add more features to already merged machines"
      
      * tag 'soc-dt-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (612 commits)
        arm64: dts: marvell: espressobin-ultra: fix Ethernet Switch unit address
        arm64: dts: marvell: turris-mox: drop unneeded flash address/size-cells
        arm64: dts: marvell: eDPU: drop redundant address/size-cells
        arm64: dts: qcom: pm6150: correct USB VBUS regulator compatible
        arm64: dts: rockchip: add rk3588 pcie and php IOMMUs
        arm64: dts: rockchip: enable onboard spi flash for rock-3a
        arm64: dts: rockchip: add USB-C support to rk3588s-orangepi-5
        arm64: dts: rockchip: Enable GPU on Orange Pi 5
        arm64: dts: rockchip: enable GPU on khadas-edge2
        arm64: dts: rockchip: Add USB3 on Edgeble NCM6A-IO board
        arm64: dts: rockchip: Support poweroff on Edgeble Neural Compute Module
        arm64: dts: rockchip: Add Radxa ROCK 3C
        dt-bindings: arm: rockchip: add Radxa ROCK 3C
        arm64: dts: exynos: gs101: specify empty clocks for remaining pinctrl
        arm64: dts: exynos: gs101: specify bus clock for pinctrl_hsi2
        arm64: dts: exynos: gs101: specify bus clock for pinctrl_peric[01]
        arm64: dts: exynos: gs101: specify bus clock for pinctrl (far) alive
        arm64: dts: Add/fix /memory node unit-addresses
        arm64: dts: qcom: qcs404: fix bluetooth device address
        arm64: dts: qcom: sc8280xp-x13s: enable USB MP and fingerprint reader
        ...
      6c60000f
    • Linus Torvalds's avatar
      Merge tag 's390-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · d65e1a0f
      Linus Torvalds authored
      Pull s390 updates from Alexander Gordeev:
      
       - Store AP Query Configuration Information in a static buffer
      
       - Rework the AP initialization and add missing cleanups to the error
         path
      
       - Swap IRQ and AP bus/device registration to avoid race conditions
      
       - Export prot_virt_guest symbol
      
       - Introduce AP configuration changes notifier interface to facilitate
         modularization of the AP bus
      
       - Add CONFIG_AP kernel configuration option to allow modularization of
         the AP bus
      
       - Rework CONFIG_ZCRYPT_DEBUG kernel configuration option description
         and dependency and rename it to CONFIG_AP_DEBUG
      
       - Convert sprintf() and snprintf() to sysfs_emit() in CIO code
      
       - Adjust indentation of RELOCS command build step
      
       - Make crypto performance counters upward compatible
      
       - Convert make_page_secure() and gmap_make_secure() to use folio
      
       - Rework channel-utilization-block (CUB) handling in preparation of
         introducing additional CUBs
      
       - Use attribute groups to simplify registration, removal and extension
         of measurement-related channel-path sysfs attributes
      
       - Add a per-channel-path binary "ext_measurement" sysfs attribute that
         provides access to extended channel-path measurement data
      
       - Export measurement data for all channel-measurement-groups (CMG), not
         only for a specific ones. This enables support of new CMG data
         formats in userspace without the need for kernel changes
      
       - Add a per-channel-path sysfs attribute "speed_bps" that provides the
         operating speed in bits per second or 0 if the operating speed is not
         available
      
       - The CIO tracepoint subchannel-type field "st" is incorrectly set to
         the value of subchannel-enabled SCHIB "ena" field. Fix that
      
       - Do not forcefully limit vmemmap starting address to MAX_PHYSMEM_BITS
      
       - Consider the maximum physical address available to a DCSS segment
         (512GB) when memory layout is set up
      
       - Simplify the virtual memory layout setup by reducing the size of
         identity mapping vs vmemmap overlap
      
       - Swap vmalloc and Lowcore/Real Memory Copy areas in virtual memory.
         This will allow to place the kernel image next to kernel modules
      
       - Move everyting KASLR related from <asm/setup.h> to <asm/page.h>
      
       - Put virtual memory layout information into a structure to improve
         code generation
      
       - Currently __kaslr_offset is the kernel offset in both physical and
         virtual memory spaces. Uncouple these offsets to allow uncoupling of
         the addresses spaces
      
       - Currently the identity mapping base address is implicit and is always
         set to zero. Make it explicit by putting into __identity_base
         persistent boot variable and use it in proper context
      
       - Introduce .amode31 section start and end macros AMODE31_START and
         AMODE31_END
      
       - Introduce OS_INFO entries that do not reference any data in memory,
         but rather provide only values
      
       - Store virtual memory layout in OS_INFO. It is read out by
         makedumpfile, crash and other tools
      
       - Store virtual memory layout in VMCORE_INFO. It is read out by crash
         and other tools when /proc/kcore device is used
      
       - Create additional PT_LOAD ELF program header that covers kernel image
         only, so that vmcore tools could locate kernel text and data when
         virtual and physical memory spaces are uncoupled
      
       - Uncouple physical and virtual address spaces
      
       - Map kernel at fixed location when KASLR mode is disabled. The
         location is defined by CONFIG_KERNEL_IMAGE_BASE kernel configuration
         value.
      
       - Rework deployment of kernel image for both compressed and
         uncompressed variants as defined by CONFIG_KERNEL_UNCOMPRESSED kernel
         configuration value
      
       - Move .vmlinux.relocs section in front of the compressed kernel. The
         interim section rescue step is avoided as result
      
       - Correct modules thunk offset calculation when branch target is more
         than 2GB away
      
       - Kernel modules contain their own set of expoline thunks. Now that the
         kernel modules area is less than 4GB away from kernel expoline
         thunks, make modules use kernel expolines. Also make EXPOLINE_EXTERN
         the default if the compiler supports it
      
       - userfaultfd can insert shared zeropages into processes running VMs,
         but that is not allowed for s390. Fallback to allocating a fresh
         zeroed anonymous folio and insert that instead
      
       - Re-enable shared zeropages for non-PV and non-skeys KVM guests
      
       - Rename hex2bitmap() to ap_hex2bitmap() and export it for external use
      
       - Add ap_config sysfs attribute to provide the means for setting or
         displaying adapters, domains and control domains assigned to a
         vfio-ap mediated device in a single operation
      
       - Make vfio_ap_mdev_link_queue() ignore duplicate link requests
      
       - Add write support to ap_config sysfs attribute to allow atomic update
         a vfio-ap mediated device state
      
       - Document ap_config sysfs attribute
      
       - Function os_info_old_init() is expected to be called only from a
         regular kdump kernel. Enable it to be called from a stand-alone dump
         kernel
      
       - Address gcc -Warray-bounds warning and fix array size in struct
         os_info
      
       - s390 does not support SMBIOS, so drop unneeded CONFIG_DMI checks
      
       - Use unwinder instead of __builtin_return_address() with ftrace to
         prevent returning of undefined values
      
       - Sections .hash and .gnu.hash are only created when CONFIG_PIE_BUILD
         kernel is enabled. Drop these for the case CONFIG_PIE_BUILD is
         disabled
      
       - Compile kernel with -fPIC and link with -no-pie to allow kpatch
         feature always succeed and drop the whole CONFIG_PIE_BUILD
         option-enabled code
      
       - Add missing virt_to_phys() converter for VSIE facility and crypto
         control blocks
      
      * tag 's390-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (54 commits)
        Revert "s390: Relocate vmlinux ELF data to virtual address space"
        KVM: s390: vsie: Use virt_to_phys for crypto control block
        s390: Relocate vmlinux ELF data to virtual address space
        s390: Compile kernel with -fPIC and link with -no-pie
        s390: vmlinux.lds.S: Drop .hash and .gnu.hash for !CONFIG_PIE_BUILD
        s390/ftrace: Use unwinder instead of __builtin_return_address()
        s390/pci: Drop unneeded reference to CONFIG_DMI
        s390/os_info: Fix array size in struct os_info
        s390/os_info: Initialize old os_info in standalone dump kernel
        docs: Update s390 vfio-ap doc for ap_config sysfs attribute
        s390/vfio-ap: Add write support to sysfs attr ap_config
        s390/vfio-ap: Ignore duplicate link requests in vfio_ap_mdev_link_queue
        s390/vfio-ap: Add sysfs attr, ap_config, to export mdev state
        s390/ap: Externalize AP bus specific bitmap reading function
        s390/mm: Re-enable the shared zeropage for !PV and !skeys KVM guests
        mm/userfaultfd: Do not place zeropages when zeropages are disallowed
        s390/expoline: Make modules use kernel expolines
        s390/nospec: Correct modules thunk offset calculation
        s390/boot: Do not rescue .vmlinux.relocs section
        s390/boot: Rework deployment of the kernel image
        ...
      d65e1a0f
  2. 12 May, 2024 5 commits
  3. 11 May, 2024 11 commits
  4. 10 May, 2024 5 commits
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-2024-05-11' of https://gitlab.freedesktop.org/drm/kernel · cf87f46f
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "This should be the last set of fixes for 6.9, i915, xe and amdgpu are
        the bulk here, one of the previous nouveau fixes turned up an issue,
        so reverting it, otherwise one core and a couple of meson fixes.
      
        core:
         - fix connector debugging output
      
        i915:
         - Automate CCS Mode setting during engine resets
         - Fix audio time stamp programming for DP
         - Fix parsing backlight BDB data
      
        xe:
         - Fix use zero-length element array
         - Move more from system wq to ordered private wq
         - Do not ignore return for drmm_mutex_init
      
        amdgpu:
         - DCN 3.5 fix
         - MST DSC fixes
         - S0i3 fix
         - S4 fix
         - HDP MMIO mapping fix
         - Fix a regression in visible vram handling
      
        amdkfd:
         - Spatial partition fix
      
        meson:
         - dw-hdmi: power-up fixes
         - dw-hdmi: add badngap setting for g12
      
        nouveau:
         - revert SG_DEBUG fix that has a side effect"
      
      * tag 'drm-fixes-2024-05-11' of https://gitlab.freedesktop.org/drm/kernel:
        Revert "drm/nouveau/firmware: Fix SG_DEBUG error with nvkm_firmware_ctor()"
        drm/amdgpu: Fix comparison in amdgpu_res_cpu_visible
        drm/amdkfd: don't allow mapping the MMIO HDP page with large pages
        drm/xe: Use ordered WQ for G2H handler
        drm/xe/guc: Check error code when initializing the CT mutex
        drm/xe/ads: Use flexible-array
        Revert "drm/amdkfd: Add partition id field to location_id"
        dm/amd/pm: Fix problems with reboot/shutdown for some SMU 13.0.4/13.0.11 users
        drm/amd/display: MST DSC check for older devices
        drm/amd/display: Fix idle optimization checks for multi-display and dual eDP
        drm/amd/display: Fix DSC-re-computing
        drm/amd/display: Enable urgent latency adjustments for DCN35
        drm/connector: Add \n to message about demoting connector force-probes
        drm/i915/bios: Fix parsing backlight BDB data
        drm/i915/audio: Fix audio time stamp programming for DP
        drm/i915/gt: Automate CCS Mode setting during engine resets
        drm/meson: dw-hdmi: add bandgap setting for g12
        drm/meson: dw-hdmi: power up phy on device init
      cf87f46f
    • Linus Torvalds's avatar
      Merge tag 'mm-hotfixes-stable-2024-05-10-13-14' of... · c22c3e07
      Linus Torvalds authored
      Merge tag 'mm-hotfixes-stable-2024-05-10-13-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
      
      Pull MM fixes from Andrew Morton:
       "18 hotfixes, 7 of which are cc:stable.
      
        More fixups for this cycle's page_owner updates. And a few userfaultfd
        fixes. Otherwise, random singletons - see the individual changelogs
        for details"
      
      * tag 'mm-hotfixes-stable-2024-05-10-13-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
        mailmap: add entry for Barry Song
        selftests/mm: fix powerpc ARCH check
        mailmap: add entry for John Garry
        XArray: set the marks correctly when splitting an entry
        selftests/vDSO: fix runtime errors on LoongArch
        selftests/vDSO: fix building errors on LoongArch
        mm,page_owner: don't remove __GFP_NOLOCKDEP in add_stack_record_to_list
        fs/proc/task_mmu: fix uffd-wp confusion in pagemap_scan_pmd_entry()
        fs/proc/task_mmu: fix loss of young/dirty bits during pagemap scan
        mm/vmalloc: fix return value of vb_alloc if size is 0
        mm: use memalloc_nofs_save() in page_cache_ra_order()
        kmsan: compiler_types: declare __no_sanitize_or_inline
        lib/test_xarray.c: fix error assumptions on check_xa_multi_store_adv_add()
        tools: fix userspace compilation with new test_xarray changes
        MAINTAINERS: update URL's for KEYS/KEYRINGS_INTEGRITY and TPM DEVICE DRIVER
        mm: page_owner: fix wrong information in dump_page_owner
        maple_tree: fix mas_empty_area_rev() null pointer dereference
        mm/userfaultfd: reset ptes when close() for wr-protected ones
      c22c3e07
    • Dave Airlie's avatar
      Revert "drm/nouveau/firmware: Fix SG_DEBUG error with nvkm_firmware_ctor()" · a222a647
      Dave Airlie authored
      This reverts commit 52a6947b.
      
      This causes loading failures in
      [    0.367379] nouveau 0000:01:00.0: NVIDIA GP104 (134000a1)
      [    0.474499] nouveau 0000:01:00.0: bios: version 86.04.50.80.13
      [    0.474620] nouveau 0000:01:00.0: pmu: firmware unavailable
      [    0.474977] nouveau 0000:01:00.0: fb: 8192 MiB GDDR5
      [    0.484371] nouveau 0000:01:00.0: sec2(acr): mbox 00000001 00000000
      [    0.484377] nouveau 0000:01:00.0: sec2(acr):load: boot failed: -5
      [    0.484379] nouveau 0000:01:00.0: acr: init failed, -5
      [    0.484466] nouveau 0000:01:00.0: init failed with -5
      [    0.484468] nouveau: DRM-master:00000000:00000080: init failed with -5
      [    0.484470] nouveau 0000:01:00.0: DRM-master: Device allocation failed: -5
      [    0.485078] nouveau 0000:01:00.0: probe with driver nouveau failed with error -50
      
      I tried tracking it down but ran out of time this week, will revisit next week.
      Reported-by: default avatarDan Moulding <dan@danm.net>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      a222a647
    • Dave Airlie's avatar
      Merge tag 'drm-misc-fixes-2024-05-10' of... · b61821bb
      Dave Airlie authored
      Merge tag 'drm-misc-fixes-2024-05-10' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes
      
      Short summary of fixes pull:
      
      core:
      - fix connector debugging output
      
      meson:
      - dw-hdmi: power-up fixes
      - dw-hdmi: add badngap setting for g12
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      
      From: Thomas Zimmermann <tzimmermann@suse.de>
      Link: https://patchwork.freedesktop.org/patch/msgid/20240510072027.GA9131@linux.fritz.box
      b61821bb
    • Linus Torvalds's avatar
      Merge tag 'gpio-fixes-for-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux · cfb4be1a
      Linus Torvalds authored
      Pull gpio fixes from Bartosz Golaszewski:
       "Some last-minute fixes for this release from the GPIO subsystem.
      
        The first two address a regression in performance reported to me after
        the conversion to using SRCU in GPIOLIB that was merged during the
        v6.9 merge window. The second patch is not technically a fix but since
        after the first one we no longer need to use a per-descriptor SRCU
        struct, I think it's worth to simplify the code before it gets
        released on Sunday.
      
        The next two commits fix two memory issues: one use-after-free bug and
        one instance of possibly leaking kernel stack memory to user-space.
      
        Summary:
      
         - fix a performance regression in GPIO requesting and releasing after
           the conversion to SRCU
      
         - fix a use-after-free bug due to a race-condition
      
         - fix leaking stack memory to user-space in a GPIO uABI corner case"
      
      * tag 'gpio-fixes-for-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
        gpiolib: cdev: fix uninitialised kfifo
        gpiolib: cdev: Fix use after free in lineinfo_changed_notify
        gpiolib: use a single SRCU struct for all GPIO descriptors
        gpiolib: fix the speed of descriptor label setting with SRCU
      cfb4be1a