1. 19 Sep, 2024 5 commits
    • Bjorn Helgaas's avatar
      Merge branch 'pci/hotplug' · 15a724aa
      Bjorn Helgaas authored
      - Remove unnecessary hpc_ops struct from shpchp (ngn)
      
      - Check for PCI_POSSIBLE_ERROR(), not 0xffffffff, in cpqphp (weiyufeng)
      
      * pci/hotplug:
        PCI: cpqphp: Use PCI_POSSIBLE_ERROR() to check config reads
        PCI: shpchp: Remove hpc_ops
      15a724aa
    • Bjorn Helgaas's avatar
      Merge branch 'pci/enumeration' · dffe4cca
      Bjorn Helgaas authored
      - Clear LBMS bit after a manual link retrain so we don't try to retrain a
        link when there's no downstream device anymore (Maciej W. Rozycki)
      
      - Revert to the original link speed after retraining fails instead of
        leaving it restricted to 2.5GT/s, so a future device has a chance to use
        higher speeds (Maciej W. Rozycki)
      
      - Correct interpretation of pcie_retrain_link() return status and update it
        to return 0/errno instead of true/false (Maciej W.  Rozycki)
      
      * pci/enumeration:
        PCI: Use an error code with PCIe failed link retraining
        PCI: Correct error reporting with PCIe failed link retraining
        PCI: Revert to the original speed after PCIe failed link retraining
        PCI: Clear the LBMS bit after a link retrain
      dffe4cca
    • Bjorn Helgaas's avatar
      Merge branch 'pci/devres' · dceed697
      Bjorn Helgaas authored
      - Export pcim_request_region(), a managed counterpart of
        pci_request_region(), for use by drivers (Philipp Stanner)
      
      - Request the PCI BAR used by xboxvideo (Philipp Stanner)
      
      - Export pcim_iomap_region() and deprecate pcim_iomap_regions() (Philipp
        Stanner)
      
      - Request and map drm/ast BARs with pcim_iomap_region() (Philipp Stanner)
      
      * pci/devres:
        drm/ast: Request PCI BAR with devres
        PCI: Deprecate pcim_iomap_regions() in favor of pcim_iomap_region()
        drm/vboxvideo: Add PCI region request
        PCI: Make pcim_request_region() a public function
      dceed697
    • Bjorn Helgaas's avatar
      Merge branch 'pci/crs' · 59b748cd
      Bjorn Helgaas authored
      - Wait for device readiness after reset by polling Vendor ID and looking
        for Configuration RRS instead of polling the Command register and looking
        for non-error completions (Bjorn Helgaas)
      
      - Fix an aardvark issue with emulating Configuration RRS for two-byte reads
        of Vendor ID; previously it only worked for four-byte reads (Bjorn
        Helgaas)
      
      - Rename CRS Completion Status to RRS to match spec usage (Bjorn Helgaas)
      
      * pci/crs:
        PCI: Rename CRS Completion Status to RRS
        PCI: aardvark: Correct Configuration RRS checking
        PCI: Wait for device readiness with Configuration RRS
      59b748cd
    • Bjorn Helgaas's avatar
      Merge branch 'pci/aer' · 1a346559
      Bjorn Helgaas authored
      - Use PCI_DEVID() macro in aer_inject() instead of open-coding it (Jinjie
        Ruan)
      
      * pci/aer:
        PCI/AER: Use PCI_DEVID() macro in aer_inject()
      1a346559
  2. 11 Sep, 2024 3 commits
    • Bjorn Helgaas's avatar
      PCI: Rename CRS Completion Status to RRS · 87f10faf
      Bjorn Helgaas authored
      PCIe r6.0 changed the abbreviation for "Configuration Request Retry Status"
      Completion Status from "CRS" to "RRS" and uses the terminology of
      "Configuration RRS Software Visibility" instead of "CRS Software
      Visibility".
      
      Align the Linux usage with the r6.0 spec language.  No functional change
      intended.
      
      It's confusing to make this change, but I think "RRS" *is* a better
      abbreviation because it was easy to interpret "CRS" as "Completion Retry
      Status", which really didn't make any sense.
      
      Link: https://lore.kernel.org/r/20240827234848.4429-4-helgaas@kernel.orgSigned-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      87f10faf
    • Bjorn Helgaas's avatar
      PCI: aardvark: Correct Configuration RRS checking · dd4e47ea
      Bjorn Helgaas authored
      Per PCIe r6.0, sec 2.3.2, when a Root Complex handles a Completion with
      Request Retry Status for a Configuration Read Request that includes both
      bytes of the Vendor ID field, it must complete the Request to the host by
      returning 0001h for the Vendor ID and all 1's for any additional bytes.
      
      Previously we only returned the 0001h Vendor ID value if we got an RRS
      completion for reads of exactly 4 bytes.  A read of 2 bytes would not
      qualify, although the spec says it should.
      
      Check for reads of 2 or more bytes including the Vendor ID.
      
      I don't think this will fix any observable problems because RRS only
      applies to the first config reads after reset, and those are all currently
      dword (4-byte) reads.
      
      Link: https://lore.kernel.org/r/20240827234848.4429-3-helgaas@kernel.orgSigned-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      dd4e47ea
    • Bjorn Helgaas's avatar
      PCI: Wait for device readiness with Configuration RRS · d591f680
      Bjorn Helgaas authored
      After a device reset, delays are required before the device can
      successfully complete config accesses.  PCIe r6.0, sec 6.6, specifies some
      delays required before software can perform config accesses.  Devices that
      require more time after those delays may respond to config accesses with
      Configuration Request Retry Status (RRS) completions.
      
      Callers of pci_dev_wait() are responsible for delays until the device can
      respond to config accesses.  pci_dev_wait() waits any additional time until
      the device can successfully complete config accesses.
      
      Reading config space of devices that are not present or not ready typically
      returns ~0 (PCI_ERROR_RESPONSE).  Previously we polled the Command register
      until we got a value other than ~0.  This is sometimes a problem because
      Root Complex handling of RRS completions may include several retries and
      implementation-specific behavior that is invisible to software (see sec
      2.3.2), so the exponential backoff in pci_dev_wait() may not work as
      intended.
      
      Linux enables Configuration RRS Software Visibility on all Root Ports that
      support it.  If it is enabled, read the Vendor ID instead of the Command
      register.  RRS completions cause immediate return of the 0x0001 reserved
      Vendor ID value, so the pci_dev_wait() backoff works correctly.
      
      When a read of Vendor ID eventually completes successfully by returning a
      non-0x0001 value (the Vendor ID or 0xffff for VFs), the device should be
      initialized and ready to respond to config requests.
      
      For conventional PCI devices or devices below Root Ports that don't support
      Configuration RRS Software Visibility, poll the Command register as before.
      
      This was developed independently, but is very similar to Stanislav
      Spassov's previous work at
      https://lore.kernel.org/linux-pci/20200223122057.6504-1-stanspas@amazon.com
      
      Link: https://lore.kernel.org/r/20240827234848.4429-2-helgaas@kernel.orgSigned-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Tested-by: default avatarDuc Dang <ducdang@google.com>
      d591f680
  3. 09 Sep, 2024 4 commits
  4. 01 Sep, 2024 1 commit
  5. 09 Aug, 2024 4 commits
  6. 06 Aug, 2024 1 commit
  7. 02 Aug, 2024 1 commit
  8. 28 Jul, 2024 12 commits
    • Linus Torvalds's avatar
      Linux 6.11-rc1 · 8400291e
      Linus Torvalds authored
      8400291e
    • Linus Torvalds's avatar
      Merge tag 'kbuild-fixes-v6.11' of... · a0c04bd5
      Linus Torvalds authored
      Merge tag 'kbuild-fixes-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
      
      Pull Kbuild fixes from Masahiro Yamada:
      
       - Fix RPM package build error caused by an incorrect locale setup
      
       - Mark modules.weakdep as ghost in RPM package
      
       - Fix the odd combination of -S and -c in stack protector scripts,
         which is an error with the latest Clang
      
      * tag 'kbuild-fixes-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
        kbuild: Fix '-S -c' in x86 stack protector scripts
        kbuild: rpm-pkg: ghost modules.weakdep file
        kbuild: rpm-pkg: Fix C locale setup
      a0c04bd5
    • Linus Torvalds's avatar
      minmax: simplify and clarify min_t()/max_t() implementation · 017fa3e8
      Linus Torvalds authored
      This simplifies the min_t() and max_t() macros by no longer making them
      work in the context of a C constant expression.
      
      That means that you can no longer use them for static initializers or
      for array sizes in type definitions, but there were only a couple of
      such uses, and all of them were converted (famous last words) to use
      MIN_T/MAX_T instead.
      
      Cc: David Laight <David.Laight@aculab.com>
      Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      017fa3e8
    • Linus Torvalds's avatar
      minmax: add a few more MIN_T/MAX_T users · 4477b39c
      Linus Torvalds authored
      Commit 3a7e02c0 ("minmax: avoid overly complicated constant
      expressions in VM code") added the simpler MIN_T/MAX_T macros in order
      to avoid some excessive expansion from the rather complicated regular
      min/max macros.
      
      The complexity of those macros stems from two issues:
      
       (a) trying to use them in situations that require a C constant
           expression (in static initializers and for array sizes)
      
       (b) the type sanity checking
      
      and MIN_T/MAX_T avoids both of these issues.
      
      Now, in the whole (long) discussion about all this, it was pointed out
      that the whole type sanity checking is entirely unnecessary for
      min_t/max_t which get a fixed type that the comparison is done in.
      
      But that still leaves min_t/max_t unnecessarily complicated due to
      worries about the C constant expression case.
      
      However, it turns out that there really aren't very many cases that use
      min_t/max_t for this, and we can just force-convert those.
      
      This does exactly that.
      
      Which in turn will then allow for much simpler implementations of
      min_t()/max_t().  All the usual "macros in all upper case will evaluate
      the arguments multiple times" rules apply.
      
      We should do all the same things for the regular min/max() vs MIN/MAX()
      cases, but that has the added complexity of various drivers defining
      their own local versions of MIN/MAX, so that needs another level of
      fixes first.
      
      Link: https://lore.kernel.org/all/b47fad1d0cf8449886ad148f8c013dae@AcuMS.aculab.com/
      Cc: David Laight <David.Laight@aculab.com>
      Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      4477b39c
    • Linus Torvalds's avatar
      Merge tag 'ubifs-for-linus-6.11-rc1-take2' of... · 7e2d0ba7
      Linus Torvalds authored
      Merge tag 'ubifs-for-linus-6.11-rc1-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs
      
      Pull UBI and UBIFS updates from Richard Weinberger:
      
       - Many fixes for power-cut issues by Zhihao Cheng
      
       - Another ubiblock error path fix
      
       - ubiblock section mismatch fix
      
       - Misc fixes all over the place
      
      * tag 'ubifs-for-linus-6.11-rc1-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
        ubi: Fix ubi_init() ubiblock_exit() section mismatch
        ubifs: add check for crypto_shash_tfm_digest
        ubifs: Fix inconsistent inode size when powercut happens during appendant writing
        ubi: block: fix null-pointer-dereference in ubiblock_create()
        ubifs: fix kernel-doc warnings
        ubifs: correct UBIFS_DFS_DIR_LEN macro definition and improve code clarity
        mtd: ubi: Restore missing cleanup on ubi_init() failure path
        ubifs: dbg_orphan_check: Fix missed key type checking
        ubifs: Fix unattached inode when powercut happens in creating
        ubifs: Fix space leak when powercut happens in linking tmpfile
        ubifs: Move ui->data initialization after initializing security
        ubifs: Fix adding orphan entry twice for the same inode
        ubifs: Remove insert_dead_orphan from replaying orphan process
        Revert "ubifs: ubifs_symlink: Fix memleak of inode->i_link in error path"
        ubifs: Don't add xattr inode into orphan area
        ubifs: Fix unattached xattr inode if powercut happens after deleting
        mtd: ubi: avoid expensive do_div() on 32-bit machines
        mtd: ubi: make ubi_class constant
        ubi: eba: properly rollback inside self_check_eba
      7e2d0ba7
    • Nathan Chancellor's avatar
      kbuild: Fix '-S -c' in x86 stack protector scripts · 3415b10a
      Nathan Chancellor authored
      After a recent change in clang to stop consuming all instances of '-S'
      and '-c' [1], the stack protector scripts break due to the kernel's use
      of -Werror=unused-command-line-argument to catch cases where flags are
      not being properly consumed by the compiler driver:
      
        $ echo | clang -o - -x c - -S -c -Werror=unused-command-line-argument
        clang: error: argument unused during compilation: '-c' [-Werror,-Wunused-command-line-argument]
      
      This results in CONFIG_STACKPROTECTOR getting disabled because
      CONFIG_CC_HAS_SANE_STACKPROTECTOR is no longer set.
      
      '-c' and '-S' both instruct the compiler to stop at different stages of
      the pipeline ('-S' after compiling, '-c' after assembling), so having
      them present together in the same command makes little sense. In this
      case, the test wants to stop before assembling because it is looking at
      the textual assembly output of the compiler for either '%fs' or '%gs',
      so remove '-c' from the list of arguments to resolve the error.
      
      All versions of GCC continue to work after this change, along with
      versions of clang that do or do not contain the change mentioned above.
      
      Cc: stable@vger.kernel.org
      Fixes: 4f7fd4d7 ("[PATCH] Add the -fstack-protector option to the CFLAGS")
      Fixes: 60a5317f ("x86: implement x86_32 stack protector")
      Link: https://github.com/llvm/llvm-project/commit/6461e537815f7fa68cef06842505353cf5600e9c [1]
      Signed-off-by: default avatarNathan Chancellor <nathan@kernel.org>
      Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
      3415b10a
    • Richard Weinberger's avatar
      ubi: Fix ubi_init() ubiblock_exit() section mismatch · 92a286e9
      Richard Weinberger authored
      Since ubiblock_exit() is now called from an init function,
      the __exit section no longer makes sense.
      
      Cc: Ben Hutchings <bwh@kernel.org>
      Reported-by: default avatarkernel test robot <lkp@intel.com>
      Closes: https://lore.kernel.org/oe-kbuild-all/202407131403.wZJpd8n2-lkp@intel.com/Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
      Reviewed-by: default avatarZhihao Cheng <chengzhihao1@huawei.com>
      92a286e9
    • Linus Torvalds's avatar
      Merge tag 'v6.11-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux · e172f1e9
      Linus Torvalds authored
      Pull turbostat updates from Len Brown:
      
       - Enable turbostat extensions to add both perf and PMT (Intel
         Platform Monitoring Technology) counters via the cmdline
      
       - Demonstrate PMT access with built-in support for Meteor Lake's
         Die C6 counter
      
      * tag 'v6.11-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
        tools/power turbostat: version 2024.07.26
        tools/power turbostat: Include umask=%x in perf counter's config
        tools/power turbostat: Document PMT in turbostat.8
        tools/power turbostat: Add MTL's PMT DC6 builtin counter
        tools/power turbostat: Add early support for PMT counters
        tools/power turbostat: Add selftests for added perf counters
        tools/power turbostat: Add selftests for SMI, APERF and MPERF counters
        tools/power turbostat: Move verbose counter messages to level 2
        tools/power turbostat: Move debug prints from stdout to stderr
        tools/power turbostat: Fix typo in turbostat.8
        tools/power turbostat: Add perf added counter example to turbostat.8
        tools/power turbostat: Fix formatting in turbostat.8
        tools/power turbostat: Extend --add option with perf counters
        tools/power turbostat: Group SMI counter with APERF and MPERF
        tools/power turbostat: Add ZERO_ARRAY for zero initializing builtin array
        tools/power turbostat: Replace enum rapl_source and cstate_source with counter_source
        tools/power turbostat: Remove anonymous union from rapl_counter_info_t
        tools/power/turbostat: Switch to new Intel CPU model defines
      e172f1e9
    • Linus Torvalds's avatar
      Merge tag 'cxl-for-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl · e62f81bb
      Linus Torvalds authored
      Pull CXL updates from Dave Jiang:
       "Core:
      
         - A CXL maturity map has been added to the documentation to detail
           the current state of CXL enabling.
      
           It provides the status of the current state of various CXL features
           to inform current and future contributors of where things are and
           which areas need contribution.
      
         - A notifier handler has been added in order for a newly created CXL
           memory region to trigger the abstract distance metrics calculation.
      
           This should bring parity for CXL memory to the same level vs
           hotplugged DRAM for NUMA abstract distance calculation. The
           abstract distance reflects relative performance used for memory
           tiering handling.
      
         - An addition for XOR math has been added to address the CXL DPA to
           SPA translation.
      
           CXL address translation did not support address interleave math
           with XOR prior to this change.
      
        Fixes:
      
         - Fix to address race condition in the CXL memory hotplug notifier
      
         - Add missing MODULE_DESCRIPTION() for CXL modules
      
         - Fix incorrect vendor debug UUID define
      
        Misc:
      
         - A warning has been added to inform users of an unsupported
           configuration when mixing CXL VH and RCH/RCD hierarchies
      
         - The ENXIO error code has been replaced with EBUSY for inject poison
           limit reached via debugfs and cxl-test support
      
         - Moving the PCI config read in cxl_dvsec_rr_decode() to avoid
           unnecessary PCI config reads
      
         - A refactor to a common struct for DRAM and general media CXL
           events"
      
      * tag 'cxl-for-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
        cxl/core/pci: Move reading of control register to immediately before usage
        cxl: Remove defunct code calculating host bridge target positions
        cxl/region: Verify target positions using the ordered target list
        cxl: Restore XOR'd position bits during address translation
        cxl/core: Fold cxl_trace_hpa() into cxl_dpa_to_hpa()
        cxl/test: Replace ENXIO with EBUSY for inject poison limit reached
        cxl/memdev: Replace ENXIO with EBUSY for inject poison limit reached
        cxl/acpi: Warn on mixed CXL VH and RCH/RCD Hierarchy
        cxl/core: Fix incorrect vendor debug UUID define
        Documentation: CXL Maturity Map
        cxl/region: Simplify cxl_region_nid()
        cxl/region: Support to calculate memory tier abstract distance
        cxl/region: Fix a race condition in memory hotplug notifier
        cxl: add missing MODULE_DESCRIPTION() macros
        cxl/events: Use a common struct for DRAM and General Media events
      e62f81bb
    • Linus Torvalds's avatar
      Merge tag 'unicode-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/krisman/unicode · 7b5d4818
      Linus Torvalds authored
      Pull unicode update from Gabriel Krisman Bertazi:
       "Two small fixes to silence the compiler and static analyzers tools
        from Ben Dooks and Jeff Johnson"
      
      * tag 'unicode-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/krisman/unicode:
        unicode: add MODULE_DESCRIPTION() macros
        unicode: make utf8 test count static
      7b5d4818
    • Jose Ignacio Tornos Martinez's avatar
      kbuild: rpm-pkg: ghost modules.weakdep file · d01c1407
      Jose Ignacio Tornos Martinez authored
      In the same way as for other similar files, mark as ghost the new file
      generated by depmod for configured weak dependencies for modules,
      modules.weakdep, so that although it is not included in the package,
      claim the ownership on it.
      Signed-off-by: default avatarJose Ignacio Tornos Martinez <jtornosm@redhat.com>
      Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
      d01c1407
    • Linus Torvalds's avatar
      Merge tag '6.11-rc-smb-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6 · 5437f30d
      Linus Torvalds authored
      Pull more smb client updates from Steve French:
      
       - fix for potential null pointer use in init cifs
      
       - additional dynamic trace points to improve debugging of some common
         scenarios
      
       - two SMB1 fixes (one addressing reconnect with POSIX extensions, one a
         mount parsing error)
      
      * tag '6.11-rc-smb-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
        smb3: add dynamic trace point for session setup key expired failures
        smb3: add four dynamic tracepoints for copy_file_range and reflink
        smb3: add dynamic tracepoint for reflink errors
        cifs: mount with "unix" mount option for SMB1 incorrectly handled
        cifs: fix reconnect with SMB1 UNIX Extensions
        cifs: fix potential null pointer use in destroy_workqueue in init_cifs error path
      5437f30d
  9. 27 Jul, 2024 9 commits
    • Linus Torvalds's avatar
      Merge tag 'block-6.11-20240726' of git://git.kernel.dk/linux · 6342649c
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
      
       - NVMe pull request via Keith:
           - Fix request without payloads cleanup  (Leon)
           - Use new protection information format (Francis)
           - Improved debug message for lost pci link (Bart)
           - Another apst quirk (Wang)
           - Use appropriate sysfs api for printing chars (Markus)
      
       - ublk async device deletion fix (Ming)
      
       - drbd kerneldoc fixups (Simon)
      
       - Fix deadlock between sd removal and release (Yang)
      
      * tag 'block-6.11-20240726' of git://git.kernel.dk/linux:
        nvme-pci: add missing condition check for existence of mapped data
        ublk: fix UBLK_CMD_DEL_DEV_ASYNC handling
        block: fix deadlock between sd_remove & sd_release
        drbd: Add peer_device to Kernel doc
        nvme-core: choose PIF from QPIF if QPIFS supports and PIF is QTYPE
        nvme-pci: Fix the instructions for disabling power management
        nvme: remove redundant bdev local variable
        nvme-fabrics: Use seq_putc() in __nvmf_concat_opt_tokens()
        nvme/pci: Add APST quirk for Lenovo N60z laptop
      6342649c
    • Linus Torvalds's avatar
      Merge tag 'io_uring-6.11-20240726' of git://git.kernel.dk/linux · 8c930747
      Linus Torvalds authored
      Pull io_uring fixes from Jens Axboe:
      
       - Fix a syzbot issue for the msg ring cache added in this release. No
         ill effects from this one, but it did make KMSAN unhappy (me)
      
       - Sanitize the NAPI timeout handling, by unifying the value handling
         into all ktime_t rather than converting back and forth (Pavel)
      
       - Fail NAPI registration for IOPOLL rings, it's not supported (Pavel)
      
       - Fix a theoretical issue with ring polling and cancelations (Pavel)
      
       - Various little cleanups and fixes (Pavel)
      
      * tag 'io_uring-6.11-20240726' of git://git.kernel.dk/linux:
        io_uring/napi: pass ktime to io_napi_adjust_timeout
        io_uring/napi: use ktime in busy polling
        io_uring/msg_ring: fix uninitialized use of target_req->flags
        io_uring: align iowq and task request error handling
        io_uring: kill REQ_F_CANCEL_SEQ
        io_uring: simplify io_uring_cmd return
        io_uring: fix io_match_task must_hold
        io_uring: don't allow netpolling with SETUP_IOPOLL
        io_uring: tighten task exit cancellations
      8c930747
    • Linus Torvalds's avatar
      Merge tag 'vfs-6.11-rc1.fixes.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs · bc4eee85
      Linus Torvalds authored
      Pull vfs fixes from Christian Brauner:
       "This contains two fixes for this merge window:
      
        VFS:
      
         - I noticed that it is possible for a privileged user to mount most
           filesystems with a non-initial user namespace in sb->s_user_ns.
      
           When fsopen() is called in a non-init namespace the caller's
           namespace is recorded in fs_context->user_ns. If the returned file
           descriptor is then passed to a process privileged in init_user_ns,
           that process can call fsconfig(fd_fs, FSCONFIG_CMD_CREATE*),
           creating a new superblock with sb->s_user_ns set to the namespace
           of the process which called fsopen().
      
           This is problematic as only filesystems that raise FS_USERNS_MOUNT
           are known to be able to support a non-initial s_user_ns. Others may
           suffer security issues, on-disk corruption or outright crash the
           kernel. Prevent that by restricting such delegation to filesystems
           that allow FS_USERNS_MOUNT.
      
           Note, that this delegation requires a privileged process to
           actually create the superblock so either the privileged process is
           cooperaing or someone must have tricked a privileged process into
           operating on a fscontext file descriptor whose origin it doesn't
           know (a stupid idea).
      
           The bug dates back to about 5 years afaict.
      
        Misc:
      
         - Fix hostfs parsing when the mount request comes in via the legacy
           mount api.
      
           In the legacy mount api hostfs allows to specify the host directory
           mount without any key.
      
           Restore that behavior"
      
      * tag 'vfs-6.11-rc1.fixes.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
        hostfs: fix the host directory parse when mounting.
        fs: don't allow non-init s_user_ns for filesystems without FS_USERNS_MOUNT
      bc4eee85
    • Linus Torvalds's avatar
      Merge tag 'rust-6.11' of https://github.com/Rust-for-Linux/linux · 910bfc26
      Linus Torvalds authored
      Pull Rust updates from Miguel Ojeda:
       "The highlight is the establishment of a minimum version for the Rust
        toolchain, including 'rustc' (and bundled tools) and 'bindgen'.
      
        The initial minimum will be the pinned version we currently have, i.e.
        we are just widening the allowed versions. That covers three stable
        Rust releases: 1.78.0, 1.79.0, 1.80.0 (getting released tomorrow),
        plus beta, plus nightly.
      
        This should already be enough for kernel developers in distributions
        that provide recent Rust compiler versions routinely, such as Arch
        Linux, Debian Unstable (outside the freeze period), Fedora Linux,
        Gentoo Linux (especially the testing channel), Nix (unstable) and
        openSUSE Slowroll and Tumbleweed.
      
        In addition, the kernel is now being built-tested by Rust's pre-merge
        CI. That is, every change that is attempting to land into the Rust
        compiler is tested against the kernel, and it is merged only if it
        passes. Similarly, the bindgen tool has agreed to build the kernel in
        their CI too.
      
        Thus, with the pre-merge CI in place, both projects hope to avoid
        unintentional changes to Rust that break the kernel. This means that,
        in general, apart from intentional changes on their side (that we will
        need to workaround conditionally on our side), the upcoming Rust
        compiler versions should generally work.
      
        In addition, the Rust project has proposed getting the kernel into
        stable Rust (at least solving the main blockers) as one of its three
        flagship goals for 2024H2 [1].
      
        I would like to thank Niko, Sid, Emilio et al. for their help
        promoting the collaboration between Rust and the kernel.
      
        Toolchain and infrastructure:
      
         - Support several Rust toolchain versions.
      
         - Support several bindgen versions.
      
         - Remove 'cargo' requirement and simplify 'rusttest', thanks to
           'alloc' having been dropped last cycle.
      
         - Provide proper error reporting for the 'rust-analyzer' target.
      
        'kernel' crate:
      
         - Add 'uaccess' module with a safe userspace pointers abstraction.
      
         - Add 'page' module with a 'struct page' abstraction.
      
         - Support more complex generics in workqueue's 'impl_has_work!'
           macro.
      
        'macros' crate:
      
         - Add 'firmware' field support to the 'module!' macro.
      
         - Improve 'module!' macro documentation.
      
        Documentation:
      
         - Provide instructions on what packages should be installed to build
           the kernel in some popular Linux distributions.
      
         - Introduce the new kernel.org LLVM+Rust toolchains.
      
         - Explain '#[no_std]'.
      
        And a few other small bits"
      
      Link: https://rust-lang.github.io/rust-project-goals/2024h2/index.html#flagship-goals [1]
      
      * tag 'rust-6.11' of https://github.com/Rust-for-Linux/linux: (26 commits)
        docs: rust: quick-start: add section on Linux distributions
        rust: warn about `bindgen` versions 0.66.0 and 0.66.1
        rust: start supporting several `bindgen` versions
        rust: work around `bindgen` 0.69.0 issue
        rust: avoid assuming a particular `bindgen` build
        rust: start supporting several compiler versions
        rust: simplify Clippy warning flags set
        rust: relax most deny-level lints to warnings
        rust: allow `dead_code` for never constructed bindings
        rust: init: simplify from `map_err` to `inspect_err`
        rust: macros: indent list item in `paste!`'s docs
        rust: add abstraction for `struct page`
        rust: uaccess: add typed accessors for userspace pointers
        uaccess: always export _copy_[from|to]_user with CONFIG_RUST
        rust: uaccess: add userspace pointers
        kbuild: rust-analyzer: improve comment documentation
        kbuild: rust-analyzer: better error handling
        docs: rust: no_std is used
        rust: alloc: add __GFP_HIGHMEM flag
        rust: alloc: fix typo in docs for GFP_NOWAIT
        ...
      910bfc26
    • Linus Torvalds's avatar
      Merge tag 'apparmor-pr-2024-07-25' of... · ff305644
      Linus Torvalds authored
      Merge tag 'apparmor-pr-2024-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor
      
      Pull apparmor updates from John Johansen:
       "Cleanups
         - optimization: try to avoid refing the label in apparmor_file_open
         - remove useless static inline function is_deleted
         - use kvfree_sensitive to free data->data
         - fix typo in kernel doc
      
        Bug fixes:
         - unpack transition table if dfa is not present
         - test: add MODULE_DESCRIPTION()
         - take nosymfollow flag into account
         - fix possible NULL pointer dereference
         - fix null pointer deref when receiving skb during sock creation"
      
      * tag 'apparmor-pr-2024-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor:
        apparmor: unpack transition table if dfa is not present
        apparmor: try to avoid refing the label in apparmor_file_open
        apparmor: test: add MODULE_DESCRIPTION()
        apparmor: take nosymfollow flag into account
        apparmor: fix possible NULL pointer dereference
        apparmor: fix typo in kernel doc
        apparmor: remove useless static inline function is_deleted
        apparmor: use kvfree_sensitive to free data->data
        apparmor: Fix null pointer deref when receiving skb during sock creation
      ff305644
    • Linus Torvalds's avatar
      Merge tag 'landlock-6.11-rc1-houdini-fix' of... · 86b405ad
      Linus Torvalds authored
      Merge tag 'landlock-6.11-rc1-houdini-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux
      
      Pull landlock fix from Mickaël Salaün:
       "Jann Horn reported a sandbox bypass for Landlock. This includes the
        fix and new tests. This should be backported"
      
      * tag 'landlock-6.11-rc1-houdini-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux:
        selftests/landlock: Add cred_transfer test
        landlock: Don't lose track of restrictions on cred_transfer
      86b405ad
    • Linus Torvalds's avatar
      Merge tag 'gpio-fixes-for-v6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux · 8e333791
      Linus Torvalds authored
      Pull gpio fix from Bartosz Golaszewski:
      
       - don't use sprintf() with non-constant format string
      
      * tag 'gpio-fixes-for-v6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
        gpio: virtuser: avoid non-constant format string
      8e333791
    • Linus Torvalds's avatar
      Merge tag 'devicetree-fixes-for-6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux · bf80f139
      Linus Torvalds authored
      Pull more devicetree updates from Rob Herring:
       "Most of this is a treewide change to of_property_for_each_u32() which
        was small enough to do in one go before rc1 and avoids the need to
        create of_property_for_each_u32_some_new_name().
      
         - Treewide conversion of of_property_for_each_u32() to drop internal
           arguments making struct property opaque
      
         - Add binding for Amlogic A4 SoC watchdog
      
         - Fix constraints for AD7192 'single-channel' property"
      
      * tag 'devicetree-fixes-for-6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
        dt-bindings: iio: adc: ad7192: Fix 'single-channel' constraints
        of: remove internal arguments from of_property_for_each_u32()
        dt-bindings: watchdog: add support for Amlogic A4 SoCs
      bf80f139
    • Linus Torvalds's avatar
      Merge tag 'iommu-fixes-v6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux · b465ed28
      Linus Torvalds authored
      Pull iommu fixes from Will Deacon:
       "We're still resolving a regression with the handling of unexpected
        page faults on SMMUv3, but we're not quite there with a fix yet.
      
         - Fix NULL dereference when freeing domain in Unisoc SPRD driver
      
         - Separate assignment statements with semicolons in AMD page-table
           code
      
         - Fix Tegra erratum workaround when the CPU is using 16KiB pages"
      
      * tag 'iommu-fixes-v6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux:
        iommu: arm-smmu: Fix Tegra workaround for PAGE_SIZE mappings
        iommu/amd: Convert comma to semicolon
        iommu: sprd: Avoid NULL deref in sprd_iommu_hw_en
      b465ed28