1. 08 Jul, 2021 21 commits
  2. 13 Jun, 2021 4 commits
    • Linus Torvalds's avatar
      Linux 5.13-rc6 · 009c9aa5
      Linus Torvalds authored
      009c9aa5
    • Linus Torvalds's avatar
      Merge tag 'perf-tools-fixes-for-v5.13-2021-06-13' of... · e4e45343
      Linus Torvalds authored
      Merge tag 'perf-tools-fixes-for-v5.13-2021-06-13' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
      
      Pull perf tools fixes from Arnaldo Carvalho de Melo:
      
       - Correct buffer copying when peeking events
      
       - Sync cpufeatures/disabled-features.h header with the kernel sources
      
      * tag 'perf-tools-fixes-for-v5.13-2021-06-13' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
        tools headers cpufeatures: Sync with the kernel sources
        perf session: Correct buffer copying when peeking events
      e4e45343
    • Linus Torvalds's avatar
      Merge tag 'nfs-for-5.13-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs · 960f0716
      Linus Torvalds authored
      Pull NFS client bugfixes from Trond Myklebust:
       "Highlights include:
      
        Stable fixes:
      
         - Fix use-after-free in nfs4_init_client()
      
        Bugfixes:
      
         - Fix deadlock between nfs4_evict_inode() and nfs4_opendata_get_inode()
      
         - Fix second deadlock in nfs4_evict_inode()
      
         - nfs4_proc_set_acl should not change the value of NFS_CAP_UIDGID_NOMAP
      
         - Fix setting of the NFS_CAP_SECURITY_LABEL capability"
      
      * tag 'nfs-for-5.13-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
        NFSv4: Fix second deadlock in nfs4_evict_inode()
        NFSv4: Fix deadlock between nfs4_evict_inode() and nfs4_opendata_get_inode()
        NFS: FMODE_READ and friends are C macros, not enum types
        NFS: Fix a potential NULL dereference in nfs_get_client()
        NFS: Fix use-after-free in nfs4_init_client()
        NFS: Ensure the NFS_CAP_SECURITY_LABEL capability is set when appropriate
        NFSv4: nfs4_proc_set_acl needs to restore NFS_CAP_UIDGID_NOMAP on error.
      960f0716
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · 331a6edb
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "Four reasonably small fixes to the core for scsi host allocation
        failure paths.
      
        The root problem is that we're not freeing the memory allocated by
        dev_set_name(), which involves a rejig of may of the free on error
        paths to do put_device() instead of kfree which, in turn, has several
        other knock on ramifications and inspection turned up a few other
        lurking bugs"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        scsi: core: Only put parent device if host state differs from SHOST_CREATED
        scsi: core: Put .shost_dev in failure path if host state changes to RUNNING
        scsi: core: Fix failure handling of scsi_add_host_with_dma()
        scsi: core: Fix error handling of scsi_host_alloc()
      331a6edb
  3. 12 Jun, 2021 15 commits
    • Linus Torvalds's avatar
      Merge tag 'riscv-for-linus-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux · 8ecfa36c
      Linus Torvalds authored
      Pull RISC-V fixes from Palmer Dabbelt:
      
       - A pair of XIP fixes: one to fix alternatives, and one to turn off the
         rest of the features that require code modification
      
       - A fix to a type that was causing some alternatives to break
      
       - A build fix for BUILTIN_DTB
      
      * tag 'riscv-for-linus-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
        riscv: Fix BUILTIN_DTB for sifive and microchip soc
        riscv: alternative: fix typo in macro name
        riscv: code patching only works on !XIP_KERNEL
        riscv: xip: support runtime trap patching
      8ecfa36c
    • Feng Tang's avatar
      mm: relocate 'write_protect_seq' in struct mm_struct · 2e302543
      Feng Tang authored
      0day robot reported a 9.2% regression for will-it-scale mmap1 test
      case[1], caused by commit 57efa1fe ("mm/gup: prevent gup_fast from
      racing with COW during fork").
      
      Further debug shows the regression is due to that commit changes the
      offset of hot fields 'mmap_lock' inside structure 'mm_struct', thus some
      cache alignment changes.
      
      From the perf data, the contention for 'mmap_lock' is very severe and
      takes around 95% cpu cycles, and it is a rw_semaphore
      
              struct rw_semaphore {
                      atomic_long_t count;	/* 8 bytes */
                      atomic_long_t owner;	/* 8 bytes */
                      struct optimistic_spin_queue osq; /* spinner MCS lock */
                      ...
      
      Before commit 57efa1fe adds the 'write_protect_seq', it happens to
      have a very optimal cache alignment layout, as Linus explained:
      
       "and before the addition of the 'write_protect_seq' field, the
        mmap_sem was at offset 120 in 'struct mm_struct'.
      
        Which meant that count and owner were in two different cachelines,
        and then when you have contention and spend time in
        rwsem_down_write_slowpath(), this is probably *exactly* the kind
        of layout you want.
      
        Because first the rwsem_write_trylock() will do a cmpxchg on the
        first cacheline (for the optimistic fast-path), and then in the
        case of contention, rwsem_down_write_slowpath() will just access
        the second cacheline.
      
        Which is probably just optimal for a load that spends a lot of
        time contended - new waiters touch that first cacheline, and then
        they queue themselves up on the second cacheline."
      
      After the commit, the rw_semaphore is at offset 128, which means the
      'count' and 'owner' fields are now in the same cacheline, and causes
      more cache bouncing.
      
      Currently there are 3 "#ifdef CONFIG_XXX" before 'mmap_lock' which will
      affect its offset:
      
        CONFIG_MMU
        CONFIG_MEMBARRIER
        CONFIG_HAVE_ARCH_COMPAT_MMAP_BASES
      
      The layout above is on 64 bits system with 0day's default kernel config
      (similar to RHEL-8.3's config), in which all these 3 options are 'y'.
      And the layout can vary with different kernel configs.
      
      Relayouting a structure is usually a double-edged sword, as sometimes it
      can helps one case, but hurt other cases.  For this case, one solution
      is, as the newly added 'write_protect_seq' is a 4 bytes long seqcount_t
      (when CONFIG_DEBUG_LOCK_ALLOC=n), placing it into an existing 4 bytes
      hole in 'mm_struct' will not change other fields' alignment, while
      restoring the regression.
      
      Link: https://lore.kernel.org/lkml/20210525031636.GB7744@xsang-OptiPlex-9020/ [1]
      Reported-by: default avatarkernel test robot <oliver.sang@intel.com>
      Signed-off-by: default avatarFeng Tang <feng.tang@intel.com>
      Reviewed-by: default avatarJohn Hubbard <jhubbard@nvidia.com>
      Reviewed-by: default avatarJason Gunthorpe <jgg@nvidia.com>
      Cc: Peter Xu <peterx@redhat.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      2e302543
    • Linus Torvalds's avatar
      Merge tag 'usb-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · 43cb5d49
      Linus Torvalds authored
      Pull USB fixes from Greg KH:
       "Here are a number of tiny USB fixes for 5.13-rc6.
      
        There are more than I would normally like, but there's been a bunch of
        people banging on the gadget and dwc3 and typec code recently for I
        think an Android release, which has resulted in a number of small
        fixes. It's nice to see companies send fixes upstream for this type of
        work, a notable change from years ago.
      
        Anyway, fixes in here are:
      
         - usb-serial device id updates
      
         - usb-serial cp210x driver fixes for broken firmware versions
      
         - typec fixes for crazy charging devices and other reported problems
      
         - dwc3 fixes for reported problems found
      
         - gadget fixes for reported problems
      
         - tiny xhci fixes
      
         - other small fixes for reported issues.
      
         - revert of a problem fix found by linux-next testing
      
        All of these have passed 0-day and linux-next testing with no reported
        problems (the revert for the found linux-next build problem included)"
      
      * tag 'usb-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (44 commits)
        Revert "usb: gadget: fsl: Re-enable driver for ARM SoCs"
        usb: typec: mux: Fix copy-paste mistake in typec_mux_match
        usb: typec: ucsi: Clear PPM capability data in ucsi_init() error path
        usb: gadget: fsl: Re-enable driver for ARM SoCs
        usb: typec: wcove: Use LE to CPU conversion when accessing msg->header
        USB: serial: cp210x: fix CP2102N-A01 modem control
        USB: serial: cp210x: fix alternate function for CP2102N QFN20
        usb: misc: brcmstb-usb-pinmap: check return value after calling platform_get_resource()
        usb: dwc3: ep0: fix NULL pointer exception
        usb: gadget: eem: fix wrong eem header operation
        usb: typec: intel_pmc_mux: Put ACPI device using acpi_dev_put()
        usb: typec: intel_pmc_mux: Add missed error check for devm_ioremap_resource()
        usb: typec: intel_pmc_mux: Put fwnode in error case during ->probe()
        usb: typec: tcpm: Do not finish VDM AMS for retrying Responses
        usb: fix various gadget panics on 10gbps cabling
        usb: fix various gadgets null ptr deref on 10gbps cabling.
        usb: pci-quirks: disable D3cold on xhci suspend for s2idle on AMD Renoir
        usb: f_ncm: only first packet of aggregate needs to start timer
        USB: f_ncm: ncm_bitrate (speed) is unsigned
        MAINTAINERS: usb: add entry for isp1760
        ...
      43cb5d49
    • Linus Torvalds's avatar
      Merge tag 'tty-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty · c46fe4aa
      Linus Torvalds authored
      Pull serial driver fix from Greg KH:
       "A single 8250_exar serial driver fix for a reported problem with a
        change that happened in 5.13-rc1.
      
        It has been in linux-next with no reported problems"
      
      * tag 'tty-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
        serial: 8250_exar: Avoid NULL pointer dereference at ->exit()
      c46fe4aa
    • Linus Torvalds's avatar
      Merge tag 'staging-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging · 0d506588
      Linus Torvalds authored
      Pull staging driver fixes from Greg KH:
       "Two tiny staging driver fixes:
      
         - ralink-gdma driver authorship information fixed up
      
         - rtl8723bs driver fix for reported regression
      
        Both have been in linux-next for a while with no reported problems"
      
      * tag 'staging-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
        staging: ralink-gdma: Remove incorrect author information
        staging: rtl8723bs: Fix uninitialized variables
      0d506588
    • Linus Torvalds's avatar
      Merge tag 'driver-core-5.13-rc6' of... · 87a7f736
      Linus Torvalds authored
      Merge tag 'driver-core-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
      
      Pull driver core fix from Greg KH:
       "A single debugfs fix for 5.13-rc6, fixing a bug in
        debugfs_read_file_str() that showed up in 5.13-rc1.
      
        It has been in linux-next for a full week with no
        reported problems"
      
      * tag 'driver-core-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
        debugfs: Fix debugfs_read_file_str()
      87a7f736
    • Linus Torvalds's avatar
      Merge tag 'char-misc-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc · 1dfa2e77
      Linus Torvalds authored
      Pull char/misc driver fixes from Greg KH:
       "Here are some small misc driver fixes for 5.13-rc6 that fix some
        reported problems:
      
         - Tiny phy driver fixes for reported issues
      
         - rtsx regression for when the device suspended
      
         - mhi driver fix for a use-after-free
      
        All of these have been in linux-next for a few days with no reported
        issues"
      
      * tag 'char-misc-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
        misc: rtsx: separate aspm mode into MODE_REG and MODE_CFG
        bus: mhi: pci-generic: Fix hibernation
        bus: mhi: pci_generic: Fix possible use-after-free in mhi_pci_remove()
        bus: mhi: pci_generic: T99W175: update channel name from AT to DUN
        phy: Sparx5 Eth SerDes: check return value after calling platform_get_resource()
        phy: ralink: phy-mt7621-pci: drop 'of_match_ptr' to fix -Wunused-const-variable
        phy: ti: Fix an error code in wiz_probe()
        phy: phy-mtk-tphy: Fix some resource leaks in mtk_phy_init()
        phy: cadence: Sierra: Fix error return code in cdns_sierra_phy_probe()
        phy: usb: Fix misuse of IS_ENABLED
      1dfa2e77
    • Linus Torvalds's avatar
      Merge tag 'pinctrl-v5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl · 141415d7
      Linus Torvalds authored
      Pull pin control fixes from Linus Walleij:
      
       - Fix some documentation warnings for Allwinner
      
       - Fix duplicated GPIO groups on Qualcomm SDX55
      
       - Fix a double enablement bug in the Ralink driver
      
       - Fix the Qualcomm SC8180x Kconfig so the driver can be selected.
      
      * tag 'pinctrl-v5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
        pinctrl: qcom: Make it possible to select SC8180x TLMM
        pinctrl: ralink: rt2880: avoid to error in calls is pin is already enabled
        pinctrl: qcom: Fix duplication in gpio_groups
        pinctrl: aspeed: Fix minor documentation error
      141415d7
    • Linus Torvalds's avatar
      Merge tag 'block-5.13-2021-06-12' of git://git.kernel.dk/linux-block · efc1fd60
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "A few fixes that should go into 5.13:
      
         - Fix a regression deadlock introduced in this release between open
           and remove of a bdev (Christoph)
      
         - Fix an async_xor md regression in this release (Xiao)
      
         - Fix bcache oversized read issue (Coly)"
      
      * tag 'block-5.13-2021-06-12' of git://git.kernel.dk/linux-block:
        block: loop: fix deadlock between open and remove
        async_xor: check src_offs is not NULL before updating it
        bcache: avoid oversized read request in cache missing code path
        bcache: remove bcache device self-defined readahead
      efc1fd60
    • Linus Torvalds's avatar
      Merge tag 'io_uring-5.13-2021-06-12' of git://git.kernel.dk/linux-block · b2568eeb
      Linus Torvalds authored
      Pull io_uring fixes from Jens Axboe:
       "Just an API change for the registration changes that went into this
        release. Better to get it sorted out now than before it's too late"
      
      * tag 'io_uring-5.13-2021-06-12' of git://git.kernel.dk/linux-block:
        io_uring: add feature flag for rsrc tags
        io_uring: change registration/upd/rsrc tagging ABI
      b2568eeb
    • Linus Torvalds's avatar
      Merge tag 'sched-urgent-2021-06-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 99f92594
      Linus Torvalds authored
      Pull scheduler fixes from Ingo Molnar:
       "Misc fixes:
      
         - Fix performance regression caused by lack of intended batching of
           RCU callbacks by over-eager NOHZ-full code.
      
         - Fix cgroups related corruption of load_avg and load_sum metrics.
      
         - Three fixes to fix blocked load, util_sum/runnable_sum and util_est
           tracking bugs"
      
      * tag 'sched-urgent-2021-06-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        sched/fair: Fix util_est UTIL_AVG_UNCHANGED handling
        sched/pelt: Ensure that *_sum is always synced with *_avg
        tick/nohz: Only check for RCU deferred wakeup on user/guest entry when needed
        sched/fair: Make sure to update tg contrib for blocked load
        sched/fair: Keep load_avg and load_sum synced
      99f92594
    • Linus Torvalds's avatar
      Merge tag 'perf-urgent-2021-06-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 191aaf6c
      Linus Torvalds authored
      Pull perf fixes from Ingo Molnar:
       "Misc fixes:
      
         - Fix the NMI watchdog on ancient Intel CPUs
      
         - Remove a misguided, NMI-unsafe KASAN callback from the NMI-safe
           irq_work path used by perf.
      
         - Fix uncore events on Ice Lake servers.
      
         - Someone booted maxcpus=1 on an SNB-EP, and the uncore driver
           emitted warnings and was probably buggy. Fix it.
      
         - KCSAN found a genuine data race in the core perf code. Somewhat
           ironically the bug was introduced through a recent race fix. :-/
           In our defense, the new race window was much more narrow. Fix it"
      
      * tag 'perf-urgent-2021-06-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/nmi_watchdog: Fix old-style NMI watchdog regression on old Intel CPUs
        irq_work: Make irq_work_queue() NMI-safe again
        perf/x86/intel/uncore: Fix M2M event umask for Ice Lake server
        perf/x86/intel/uncore: Fix a kernel WARNING triggered by maxcpus=1
        perf: Fix data race between pin_count increment/decrement
      191aaf6c
    • Linus Torvalds's avatar
      Merge tag 'objtool-urgent-2021-06-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 768895fb
      Linus Torvalds authored
      Pull objtool fixes from Ingo Molnar:
       "Two objtool fixes:
      
         - fix a bug that corrupts the code by mistakenly rewriting
           conditional jumps
      
         - fix another bug generating an incorrect ELF symbol table
           during retpoline rewriting"
      
      * tag 'objtool-urgent-2021-06-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        objtool: Only rewrite unconditional retpoline thunk calls
        objtool: Fix .symtab_shndx handling for elf_create_undef_symbol()
      768895fb
    • Alexandre Ghiti's avatar
      riscv: Fix BUILTIN_DTB for sifive and microchip soc · 0ddd7eaf
      Alexandre Ghiti authored
      Fix BUILTIN_DTB config which resulted in a dtb that was actually not
      built into the Linux image: in the same manner as Canaan soc does,
      create an object file from the dtb file that will get linked into the
      Linux image.
      Signed-off-by: default avatarAlexandre Ghiti <alex@ghiti.fr>
      Signed-off-by: default avatarPalmer Dabbelt <palmerdabbelt@google.com>
      0ddd7eaf
    • Linus Torvalds's avatar
      Merge tag 'trace-v5.13-rc5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace · ad347abe
      Linus Torvalds authored
      Pull tracing fixes from Steven Rostedt:
      
       - Fix the length check in the temp buffer filter
      
       - Fix build failure in bootconfig tools for "fallthrough" macro
      
       - Fix error return of bootconfig apply_xbc() routine
      
      * tag 'trace-v5.13-rc5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
        tracing: Correct the length check which causes memory corruption
        ftrace: Do not blindly read the ip address in ftrace_bug()
        tools/bootconfig: Fix a build error accroding to undefined fallthrough
        tools/bootconfig: Fix error return code in apply_xbc()
      ad347abe