1. 26 Aug, 2019 1 commit
    • J. Bruce Fields's avatar
      Deprecate nfsd fault injection · 9d60d931
      J. Bruce Fields authored
      This is only useful for client testing.  I haven't really maintained it,
      and reference counting and locking are wrong at this point.  You can get
      some of the same functionality now from nfsd/clients/.
      
      It was a good idea but I think its time has passed.
      
      In the unlikely event of users, hopefully the BROKEN dependency will
      prompt them to speak up.  Otherwise I expect to remove it soon.
      Reported-by: default avatarAlex Lyakas <alex@zadara.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      9d60d931
  2. 20 Aug, 2019 1 commit
  3. 19 Aug, 2019 18 commits
  4. 16 Aug, 2019 3 commits
    • J. Bruce Fields's avatar
      nfsd: Remove unnecessary NULL checks · 10fa8acf
      J. Bruce Fields authored
      "cb" is never actually NULL in these functions.
      
      On a quick skim of the history, they seem to have been there from the
      beginning.  I'm not sure if they originally served a purpose.
      Reported-by: default avatarJia-Ju Bai <baijiaju1990@gmail.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      10fa8acf
    • J. Bruce Fields's avatar
      Merge nfsd bugfixes · 4f375483
      J. Bruce Fields authored
      These are some nfsd bugfixes that I also want in the main branch that
      will be submitted for the 5.4 merge window.
      4f375483
    • He Zhe's avatar
      nfsd4: Fix kernel crash when reading proc file reply_cache_stats · 78e70e78
      He Zhe authored
      reply_cache_stats uses wrong parameter as seq file private structure and
      thus causes the following kernel crash when users read
      /proc/fs/nfsd/reply_cache_stats
      
      BUG: kernel NULL pointer dereference, address: 00000000000001f9
      PGD 0 P4D 0
      Oops: 0000 [#3] SMP PTI
      CPU: 6 PID: 1502 Comm: cat Tainted: G      D           5.3.0-rc3+ #1
      Hardware name: Intel Corporation Broadwell Client platform/Basking Ridge, BIOS BDW-E2R1.86C.0118.R01.1503110618 03/11/2015
      RIP: 0010:nfsd_reply_cache_stats_show+0x3b/0x2d0
      Code: 41 54 49 89 f4 48 89 fe 48 c7 c7 b3 10 33 88 53 bb e8 03 00 00 e8 88 82 d1 ff bf 58 89 41 00 e8 eb c5 85 00 48 83 eb 01 75 f0 <41> 8b 94 24 f8 01 00 00 48 c7 c6 be 10 33 88 4c 89 ef bb e8 03 00
      RSP: 0018:ffffaa520106fe08 EFLAGS: 00010246
      RAX: 000000cfe1a77123 RBX: 0000000000000000 RCX: 0000000000291b46
      RDX: 000000cf00000000 RSI: 0000000000000006 RDI: 0000000000291b28
      RBP: ffffaa520106fe20 R08: 0000000000000006 R09: 000000cfe17e55dd
      R10: ffffa424e47c0000 R11: 000000000000030b R12: 0000000000000001
      R13: ffffa424e5697000 R14: 0000000000000001 R15: ffffa424e5697000
      FS:  00007f805735f580(0000) GS:ffffa424f8f80000(0000) knlGS:0000000000000000
      CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      CR2: 00000000000001f9 CR3: 00000000655ce005 CR4: 00000000003606e0
      Call Trace:
       seq_read+0x194/0x3e0
       __vfs_read+0x1b/0x40
       vfs_read+0x95/0x140
       ksys_read+0x61/0xe0
       __x64_sys_read+0x1a/0x20
       do_syscall_64+0x4d/0x120
       entry_SYSCALL_64_after_hwframe+0x44/0xa9
      RIP: 0033:0x7f805728b861
      Code: fe ff ff 50 48 8d 3d 86 b4 09 00 e8 79 e0 01 00 66 0f 1f 84 00 00 00 00 00 48 8d 05 d9 19 0d 00 8b 00 85 c0 75 13 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 57 c3 66 0f 1f 44 00 00 48 83 ec 28 48 89 54
      RSP: 002b:00007ffea1ce3c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
      RAX: ffffffffffffffda RBX: 0000000000020000 RCX: 00007f805728b861
      RDX: 0000000000020000 RSI: 00007f8057183000 RDI: 0000000000000003
      RBP: 00007f8057183000 R08: 00007f8057182010 R09: 0000000000000000
      R10: 0000000000000022 R11: 0000000000000246 R12: 0000559a60e8ff10
      R13: 0000000000000003 R14: 0000000000020000 R15: 0000000000020000
      Modules linked in:
      CR2: 00000000000001f9
      ---[ end trace 01613595153f0cba ]---
      RIP: 0010:nfsd_reply_cache_stats_show+0x3b/0x2d0
      Code: 41 54 49 89 f4 48 89 fe 48 c7 c7 b3 10 33 88 53 bb e8 03 00 00 e8 88 82 d1 ff bf 58 89 41 00 e8 eb c5 85 00 48 83 eb 01 75 f0 <41> 8b 94 24 f8 01 00 00 48 c7 c6 be 10 33 88 4c 89 ef bb e8 03 00
      RSP: 0018:ffffaa52004b3e08 EFLAGS: 00010246
      RAX: 0000002bab45a7c6 RBX: 0000000000000000 RCX: 0000000000291b4c
      RDX: 0000002b00000000 RSI: 0000000000000004 RDI: 0000000000291b28
      RBP: ffffaa52004b3e20 R08: 0000000000000004 R09: 0000002bab1c8c7a
      R10: ffffa424e5500000 R11: 00000000000002a9 R12: 0000000000000001
      R13: ffffa424e4475000 R14: 0000000000000001 R15: ffffa424e4475000
      FS:  00007f805735f580(0000) GS:ffffa424f8f80000(0000) knlGS:0000000000000000
      CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      CR2: 00000000000001f9 CR3: 00000000655ce005 CR4: 00000000003606e0
      Killed
      
      Fixes: 3ba75830 ("nfsd4: drc containerization")
      Signed-off-by: default avatarHe Zhe <zhe.he@windriver.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      78e70e78
  5. 15 Aug, 2019 3 commits
  6. 30 Jul, 2019 1 commit
    • Dave Wysochanski's avatar
      SUNRPC: Track writers of the 'channel' file to improve cache_listeners_exist · 64a38e84
      Dave Wysochanski authored
      The sunrpc cache interface is susceptible to being fooled by a rogue
      process just reading a 'channel' file.  If this happens the kernel
      may think a valid daemon exists to service the cache when it does not.
      For example, the following may fool the kernel:
      cat /proc/net/rpc/auth.unix.gid/channel
      
      Change the tracking of readers to writers when considering whether a
      listener exists as all valid daemon processes either open a channel
      file O_RDWR or O_WRONLY.  While this does not prevent a rogue process
      from "stealing" a message from the kernel, it does at least improve
      the kernels perception of whether a valid process servicing the cache
      exists.
      Signed-off-by: default avatarDave Wysochanski <dwysocha@redhat.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      64a38e84
  7. 28 Jul, 2019 13 commits
    • Linus Torvalds's avatar
      Linux 5.3-rc2 · 609488bc
      Linus Torvalds authored
      609488bc
    • Linus Torvalds's avatar
      Merge tag 'meminit-v5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux · c622fc5f
      Linus Torvalds authored
      Pull structleak fix from Kees Cook:
       "Disable gcc-based stack variable auto-init under KASAN (Arnd
        Bergmann).
      
        This fixes a bunch of build warnings under KASAN and the
        gcc-plugin-based stack auto-initialization features (which are
        arguably redundant, so better to let KASAN control this)"
      
      * tag 'meminit-v5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
        structleak: disable STRUCTLEAK_BYREF in combination with KASAN_STACK
      c622fc5f
    • Linus Torvalds's avatar
      Merge tag 'kbuild-fixes-v5.3' of... · 8e61ea11
      Linus Torvalds authored
      Merge tag 'kbuild-fixes-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
      
      Pull Kbuild fixes from Masahiro Yamada:
      
       - add compile_commands.json to .gitignore
      
       - fix false-positive warning from gen_compile_commands.py after
         allnoconfig build
      
       - remove unused code
      
      * tag 'kbuild-fixes-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
        kbuild: remove unused single-used-m
        gen_compile_commands: lower the entry count threshold
        .gitignore: Add compilation database file
        kbuild: remove unused objectify macro
      8e61ea11
    • Linus Torvalds's avatar
      Merge tag 'char-misc-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc · 04ce9318
      Linus Torvalds authored
      Pull char/misc driver fixes from Greg KH:
       "Here are some small char and misc driver fixes for 5.3-rc2 to resolve
        some reported issues.
      
        Nothing major at all, some binder bugfixes for issues found, some new
        mei device ids, firmware building warning fixes, habanalabs fixes, a
        few other build fixes, and a MAINTAINERS update.
      
        All of these have been in linux-next with no reported issues"
      
      * tag 'char-misc-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
        test_firmware: fix a memory leak bug
        hpet: Fix division by zero in hpet_time_div()
        eeprom: make older eeprom drivers select NVMEM_SYSFS
        vmw_balloon: Remove Julien from the maintainers list
        fpga-manager: altera-ps-spi: Fix build error
        mei: me: add mule creek canyon (EHL) device ids
        binder: prevent transactions to context manager from its own process.
        binder: Set end of SG buffer area properly.
        firmware: Fix missing inline
        firmware: fix build errors in paged buffer handling code
        habanalabs: don't reset device when getting VRHOT
        habanalabs: use %pad for printing a dma_addr_t
      04ce9318
    • Linus Torvalds's avatar
      Merge tag 'tty-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty · 572782b2
      Linus Torvalds authored
      Pull tty fixes from Greg KH:
       "Here are two tty/vt fixes:
      
         - delete the netx-serial driver as the arch has been removed, no need
           to keep the serial driver for it around either.
      
         - vt console_lock fix to resolve a reported noisy warning at runtime
      
        Both of these have been in linux-next with no reported issues"
      
      * tag 'tty-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
        vt: Grab console_lock around con_is_bound in show_bind
        tty: serial: netx: Delete driver
      572782b2
    • Linus Torvalds's avatar
      Merge tag 'spdx-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx · ad28fd1c
      Linus Torvalds authored
      Pull SPDX fixes from Greg KH:
       "Here are some small SPDX fixes for 5.3-rc2 for things that came in
        during the 5.3-rc1 merge window that we previously missed.
      
        Only three small patches here:
      
         - two uapi patches to resolve some SPDX tags that were not correct
      
         - fix an invalid SPDX tag in the iomap Makefile file
      
        All have been properly reviewed on the public mailing lists"
      
      * tag 'spdx-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx:
        iomap: fix Invalid License ID
        treewide: remove SPDX "WITH Linux-syscall-note" from kernel-space headers again
        treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers
      ad28fd1c
    • Linus Torvalds's avatar
      Merge tag 'usb-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · 29af915c
      Linus Torvalds authored
      Pull USB fixes from Greg KH:
       "Here are some small fixes for 5.3-rc2. All of these resolve some
        reported issues, some more than others :)
      
        Included in here is:
      
         - xhci fix for an annoying issue with odd devices
      
         - reversion of some usb251xb patches that should not have been merged
      
         - usb pci quirk additions and fixups
      
         - usb storage fix
      
         - usb host controller error test fix
      
        All of these have been in linux-next with no reported issues"
      
      * tag 'usb-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
        xhci: Fix crash if scatter gather is used with Immediate Data Transfer (IDT).
        usb: usb251xb: Reallow swap-dx-lanes to apply to the upstream port
        Revert "usb: usb251xb: Add US port lanes inversion property"
        Revert "usb: usb251xb: Add US lanes inversion dts-bindings"
        usb: wusbcore: fix unbalanced get/put cluster_id
        usb/hcd: Fix a NULL vs IS_ERR() bug in usb_hcd_setup_local_mem()
        usb-storage: Add a limitation for blk_queue_max_hw_sectors()
        usb: pci-quirks: Minor cleanup for AMD PLL quirk
        usb: pci-quirks: Correct AMD PLL quirk detection
      29af915c
    • Linus Torvalds's avatar
      Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc · 5bb575bc
      Linus Torvalds authored
      Pull ARM SoC fixes from Olof Johansson:
       "Here's the first batch of fixes for this release cycle.
      
        Main diffstat here is the re-deletion of netx. I messed up and most
        likely didn't remove the files from the index when I test-merged this
        and saw conflicts, and from there on out 'git rerere' remembered the
        mistake and I missed checking it. Here it's done again as expected.
      
        Besides that:
      
         - A defconfig refresh + enabling of new drivers for u8500
      
         - i.MX fixlets for i2c/SAI/pinmux
      
         - sleep.S build fix for Davinci
      
         - Broadcom devicetree build/warning fix"
      
      * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
        ARM: defconfig: u8500: Add new drivers
        ARM: defconfig: u8500: Refresh defconfig
        ARM: dts: bcm: bcm47094: add missing #cells for mdio-bus-mux
        ARM: davinci: fix sleep.S build error on ARMv4
        arm64: dts: imx8mq: fix SAI compatible
        arm64: dts: imx8mm: Correct SAI3 RXC/TXFS pin's mux option #1
        ARM: dts: imx6ul: fix clock frequency property name of I2C buses
        ARM: Delete netx a second time
        ARM: dts: imx7ulp: Fix usb-phy unit address format
      5bb575bc
    • Linus Torvalds's avatar
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · a9815a4f
      Linus Torvalds authored
      Pull x86 fixes from Thomas Gleixner:
       "A set of x86 fixes and functional updates:
      
         - Prevent stale huge I/O TLB mappings on 32bit. A long standing bug
           which got exposed by KPTI support for 32bit
      
         - Prevent bogus access_ok() warnings in arch_stack_walk_user()
      
         - Add display quirks for Lenovo devices which have height and width
           swapped
      
         - Add the missing CR2 fixup for 32 bit async pagefaults. Fallout of
           the CR2 bug fix series.
      
         - Unbreak handling of force enabled HPET by moving the 'is HPET
           counting' check back to the original place.
      
         - A more accurate check for running on a hypervisor platform in the
           MDS mitigation code. Not perfect, but more accurate than the
           previous one.
      
         - Update a stale and confusing comment vs. IRQ stacks"
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/speculation/mds: Apply more accurate check on hypervisor platform
        x86/hpet: Undo the early counter is counting check
        x86/entry/32: Pass cr2 to do_async_page_fault()
        x86/irq/64: Update stale comment
        x86/sysfb_efi: Add quirks for some devices with swapped width and height
        x86/stacktrace: Prevent access_ok() warnings in arch_stack_walk_user()
        mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy()
        x86/mm: Sync also unmappings in vmalloc_sync_all()
        x86/mm: Check for pfn instead of page in vmalloc_sync_one()
      a9815a4f
    • Linus Torvalds's avatar
      Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · e24ce84e
      Linus Torvalds authored
      Pull scheduler fixes from Thomas Gleixner:
       "Two fixes for the fair scheduling class:
      
         - Prevent freeing memory which is accessible by concurrent readers
      
         - Make the RCU annotations for numa groups consistent"
      
      * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        sched/fair: Use RCU accessors consistently for ->numa_group
        sched/fair: Don't free p->numa_faults with concurrent readers
      e24ce84e
    • Linus Torvalds's avatar
      Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 750991f9
      Linus Torvalds authored
      Pull perf fixes from Thomas Gleixner:
       "A pile of perf related fixes:
      
        Kernel:
         - Fix SLOTS PEBS event constraints for Icelake CPUs
      
         - Add the missing mask bit to allow counting hardware generated
           prefetches on L3 for Icelake CPUs
      
         - Make the test for hypervisor platforms more accurate (as far as
           possible)
      
         - Handle PMUs correctly which override event->cpu
      
         - Yet another missing fallthrough annotation
      
        Tools:
           perf.data:
              - Fix loading of compressed data split across adjacent records
              - Fix buffer size setting for processing CPU topology perf.data
                header.
      
           perf stat:
              - Fix segfault for event group in repeat mode
              - Always separate "stalled cycles per insn" line, it was being
                appended to the "instructions" line.
      
           perf script:
              - Fix --max-blocks man page description.
              - Improve man page description of metrics.
              - Fix off by one in brstackinsn IPC computation.
      
           perf probe:
              - Avoid calling freeing routine multiple times for same pointer.
      
           perf build:
              - Do not use -Wshadow on gcc < 4.8, avoiding too strict warnings
                treated as errors, breaking the build"
      
      * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        perf/x86/intel: Mark expected switch fall-throughs
        perf/core: Fix creating kernel counters for PMUs that override event->cpu
        perf/x86: Apply more accurate check on hypervisor platform
        perf/x86/intel: Fix invalid Bit 13 for Icelake MSR_OFFCORE_RSP_x register
        perf/x86/intel: Fix SLOTS PEBS event constraint
        perf build: Do not use -Wshadow on gcc < 4.8
        perf probe: Avoid calling freeing routine multiple times for same pointer
        perf probe: Set pev->nargs to zero after freeing pev->args entries
        perf session: Fix loading of compressed data split across adjacent records
        perf stat: Always separate stalled cycles per insn
        perf stat: Fix segfault for event group in repeat mode
        perf tools: Fix proper buffer size for feature processing
        perf script: Fix off by one in brstackinsn IPC computation
        perf script: Improve man page description of metrics
        perf script: Fix --max-blocks man page description
      750991f9
    • Linus Torvalds's avatar
      Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 431f288e
      Linus Torvalds authored
      Pull locking fixes from Thomas Gleixner:
       "A set of locking fixes:
      
         - Address the fallout of the rwsem rework. Missing ACQUIREs and a
           sanity check to prevent a use-after-free
      
         - Add missing checks for unitialized mutexes when mutex debugging is
           enabled.
      
         - Remove the bogus code in the generic SMP variant of
           arch_futex_atomic_op_inuser()
      
         - Fixup the #ifdeffery in lockdep to prevent compile warnings"
      
      * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        locking/mutex: Test for initialized mutex
        locking/lockdep: Clean up #ifdef checks
        locking/lockdep: Hide unused 'class' variable
        locking/rwsem: Add ACQUIRE comments
        tty/ldsem, locking/rwsem: Add missing ACQUIRE to read_failed sleep loop
        lcoking/rwsem: Add missing ACQUIRE to read_slowpath sleep loop
        locking/rwsem: Add missing ACQUIRE to read_slowpath exit when queue is empty
        locking/rwsem: Don't call owner_on_cpu() on read-owner
        futex: Cleanup generic SMP variant of arch_futex_atomic_op_inuser()
      431f288e
    • Linus Torvalds's avatar
      Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 13fbe991
      Linus Torvalds authored
      Pull objtool fix from Thomas Gleixner:
       "A single robustness fix for objtool to handle unbalanced CLAC
        invocations under all circumstances"
      
      * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        objtool: Improve UACCESS coverage
      13fbe991