1. 02 Aug, 2019 2 commits
    • Masami Hiramatsu's avatar
      arm64: Make debug exception handlers visible from RCU · d8bb6718
      Masami Hiramatsu authored
      Make debug exceptions visible from RCU so that synchronize_rcu()
      correctly track the debug exception handler.
      
      This also introduces sanity checks for user-mode exceptions as same
      as x86's ist_enter()/ist_exit().
      
      The debug exception can interrupt in idle task. For example, it warns
      if we put a kprobe on a function called from idle task as below.
      The warning message showed that the rcu_read_lock() caused this
      problem. But actually, this means the RCU is lost the context which
      is already in NMI/IRQ.
      
        /sys/kernel/debug/tracing # echo p default_idle_call >> kprobe_events
        /sys/kernel/debug/tracing # echo 1 > events/kprobes/enable
        /sys/kernel/debug/tracing # [  135.122237]
        [  135.125035] =============================
        [  135.125310] WARNING: suspicious RCU usage
        [  135.125581] 5.2.0-08445-g9187c508bdc7 #20 Not tainted
        [  135.125904] -----------------------------
        [  135.126205] include/linux/rcupdate.h:594 rcu_read_lock() used illegally while idle!
        [  135.126839]
        [  135.126839] other info that might help us debug this:
        [  135.126839]
        [  135.127410]
        [  135.127410] RCU used illegally from idle CPU!
        [  135.127410] rcu_scheduler_active = 2, debug_locks = 1
        [  135.128114] RCU used illegally from extended quiescent state!
        [  135.128555] 1 lock held by swapper/0/0:
        [  135.128944]  #0: (____ptrval____) (rcu_read_lock){....}, at: call_break_hook+0x0/0x178
        [  135.130499]
        [  135.130499] stack backtrace:
        [  135.131192] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.2.0-08445-g9187c508bdc7 #20
        [  135.131841] Hardware name: linux,dummy-virt (DT)
        [  135.132224] Call trace:
        [  135.132491]  dump_backtrace+0x0/0x140
        [  135.132806]  show_stack+0x24/0x30
        [  135.133133]  dump_stack+0xc4/0x10c
        [  135.133726]  lockdep_rcu_suspicious+0xf8/0x108
        [  135.134171]  call_break_hook+0x170/0x178
        [  135.134486]  brk_handler+0x28/0x68
        [  135.134792]  do_debug_exception+0x90/0x150
        [  135.135051]  el1_dbg+0x18/0x8c
        [  135.135260]  default_idle_call+0x0/0x44
        [  135.135516]  cpu_startup_entry+0x2c/0x30
        [  135.135815]  rest_init+0x1b0/0x280
        [  135.136044]  arch_call_rest_init+0x14/0x1c
        [  135.136305]  start_kernel+0x4d4/0x500
        [  135.136597]
      
      So make debug exception visible to RCU can fix this warning.
      Reported-by: default avatarNaresh Kamboju <naresh.kamboju@linaro.org>
      Acked-by: default avatarPaul E. McKenney <paulmck@linux.ibm.com>
      Signed-off-by: default avatarMasami Hiramatsu <mhiramat@kernel.org>
      Signed-off-by: default avatarWill Deacon <will@kernel.org>
      d8bb6718
    • Masami Hiramatsu's avatar
      arm64: kprobes: Recover pstate.D in single-step exception handler · b3980e48
      Masami Hiramatsu authored
      kprobes manipulates the interrupted PSTATE for single step, and
      doesn't restore it. Thus, if we put a kprobe where the pstate.D
      (debug) masked, the mask will be cleared after the kprobe hits.
      
      Moreover, in the most complicated case, this can lead a kernel
      crash with below message when a nested kprobe hits.
      
      [  152.118921] Unexpected kernel single-step exception at EL1
      
      When the 1st kprobe hits, do_debug_exception() will be called.
      At this point, debug exception (= pstate.D) must be masked (=1).
      But if another kprobes hits before single-step of the first kprobe
      (e.g. inside user pre_handler), it unmask the debug exception
      (pstate.D = 0) and return.
      Then, when the 1st kprobe setting up single-step, it saves current
      DAIF, mask DAIF, enable single-step, and restore DAIF.
      However, since "D" flag in DAIF is cleared by the 2nd kprobe, the
      single-step exception happens soon after restoring DAIF.
      
      This has been introduced by commit 7419333f ("arm64: kprobe:
      Always clear pstate.D in breakpoint exception handler")
      
      To solve this issue, this stores all DAIF bits and restore it
      after single stepping.
      Reported-by: default avatarNaresh Kamboju <naresh.kamboju@linaro.org>
      Fixes: 7419333f ("arm64: kprobe: Always clear pstate.D in breakpoint exception handler")
      Reviewed-by: default avatarJames Morse <james.morse@arm.com>
      Tested-by: default avatarJames Morse <james.morse@arm.com>
      Signed-off-by: default avatarMasami Hiramatsu <mhiramat@kernel.org>
      Signed-off-by: default avatarWill Deacon <will@kernel.org>
      b3980e48
  2. 01 Aug, 2019 5 commits
  3. 31 Jul, 2019 3 commits
  4. 29 Jul, 2019 5 commits
    • Anders Roxell's avatar
      arm64: module: Mark expected switch fall-through · eca92a53
      Anders Roxell authored
      When fall-through warnings was enabled by default the following warnings
      was starting to show up:
      
      ../arch/arm64/kernel/module.c: In function ‘apply_relocate_add’:
      ../arch/arm64/kernel/module.c:316:19: warning: this statement may fall
       through [-Wimplicit-fallthrough=]
          overflow_check = false;
          ~~~~~~~~~~~~~~~^~~~~~~
      ../arch/arm64/kernel/module.c:317:3: note: here
         case R_AARCH64_MOVW_UABS_G0:
         ^~~~
      ../arch/arm64/kernel/module.c:322:19: warning: this statement may fall
       through [-Wimplicit-fallthrough=]
          overflow_check = false;
          ~~~~~~~~~~~~~~~^~~~~~~
      ../arch/arm64/kernel/module.c:323:3: note: here
         case R_AARCH64_MOVW_UABS_G1:
         ^~~~
      
      Rework so that the compiler doesn't warn about fall-through.
      
      Fixes: d93512ef0f0e ("Makefile: Globally enable fall-through warning")
      Signed-off-by: default avatarAnders Roxell <anders.roxell@linaro.org>
      Signed-off-by: default avatarWill Deacon <will@kernel.org>
      eca92a53
    • Anders Roxell's avatar
      arm64: smp: Mark expected switch fall-through · 66554739
      Anders Roxell authored
      When fall-through warnings was enabled by default the following warning
      was starting to show up:
      
      In file included from ../include/linux/kernel.h:15,
                       from ../include/linux/list.h:9,
                       from ../include/linux/kobject.h:19,
                       from ../include/linux/of.h:17,
                       from ../include/linux/irqdomain.h:35,
                       from ../include/linux/acpi.h:13,
                       from ../arch/arm64/kernel/smp.c:9:
      ../arch/arm64/kernel/smp.c: In function ‘__cpu_up’:
      ../include/linux/printk.h:302:2: warning: this statement may fall
       through [-Wimplicit-fallthrough=]
        printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ../arch/arm64/kernel/smp.c:156:4: note: in expansion of macro ‘pr_crit’
          pr_crit("CPU%u: may not have shut down cleanly\n", cpu);
          ^~~~~~~
      ../arch/arm64/kernel/smp.c:157:3: note: here
         case CPU_STUCK_IN_KERNEL:
         ^~~~
      
      Rework so that the compiler doesn't warn about fall-through.
      
      Fixes: d93512ef0f0e ("Makefile: Globally enable fall-through warning")
      Signed-off-by: default avatarAnders Roxell <anders.roxell@linaro.org>
      Signed-off-by: default avatarWill Deacon <will@kernel.org>
      66554739
    • Will Deacon's avatar
      arm64: hw_breakpoint: Fix warnings about implicit fallthrough · 75a382f1
      Will Deacon authored
      Now that -Wimplicit-fallthrough is passed to GCC by default, the kernel
      build has suddenly got noisy. Annotate the two fall-through cases in our
      hw_breakpoint implementation, since they are both intentional.
      Reported-by: default avatarAnders Roxell <anders.roxell@linaro.org>
      Signed-off-by: default avatarWill Deacon <will@kernel.org>
      75a382f1
    • Will Deacon's avatar
      drivers/perf: arm_pmu: Fix failure path in PM notifier · 0d7fd70f
      Will Deacon authored
      Handling of the CPU_PM_ENTER_FAILED transition in the Arm PMU PM
      notifier code incorrectly skips restoration of the counters. Fix the
      logic so that CPU_PM_ENTER_FAILED follows the same path as CPU_PM_EXIT.
      
      Cc: <stable@vger.kernel.org>
      Fixes: da4e4f18 ("drivers/perf: arm_pmu: implement CPU_PM notifier")
      Reported-by: default avatarAnders Roxell <anders.roxell@linaro.org>
      Acked-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
      Signed-off-by: default avatarWill Deacon <will@kernel.org>
      0d7fd70f
    • Will Deacon's avatar
      arm64: compat: Allow single-byte watchpoints on all addresses · 849adec4
      Will Deacon authored
      Commit d968d2b8 ("ARM: 7497/1: hw_breakpoint: allow single-byte
      watchpoints on all addresses") changed the validation requirements for
      hardware watchpoints on arch/arm/. Update our compat layer to implement
      the same relaxation.
      
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarWill Deacon <will@kernel.org>
      849adec4
  5. 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
  6. 27 Jul, 2019 10 commits
    • Linus Torvalds's avatar
      Merge tag 'Wimplicit-fallthrough-5.3-rc2' of... · 88c50834
      Linus Torvalds authored
      Merge tag 'Wimplicit-fallthrough-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux
      
      Pull Wimplicit-fallthrough enablement from Gustavo A. R. Silva:
       "This marks switch cases where we are expecting to fall through, and
        globally enables the -Wimplicit-fallthrough option in the main
        Makefile.
      
        Finally, some missing-break fixes that have been tagged for -stable:
      
         - drm/amdkfd: Fix missing break in switch statement
      
         - drm/amdgpu/gfx10: Fix missing break in switch statement
      
        With these changes, we completely get rid of all the fall-through
        warnings in the kernel"
      
      * tag 'Wimplicit-fallthrough-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
        Makefile: Globally enable fall-through warning
        drm/i915: Mark expected switch fall-throughs
        drm/amd/display: Mark expected switch fall-throughs
        drm/amdkfd/kfd_mqd_manager_v10: Avoid fall-through warning
        drm/amdgpu/gfx10: Fix missing break in switch statement
        drm/amdkfd: Fix missing break in switch statement
        perf/x86/intel: Mark expected switch fall-throughs
        mtd: onenand_base: Mark expected switch fall-through
        afs: fsclient: Mark expected switch fall-throughs
        afs: yfsclient: Mark expected switch fall-throughs
        can: mark expected switch fall-throughs
        firewire: mark expected switch fall-throughs
      88c50834
    • Linus Torvalds's avatar
      Merge tag 's390-5.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · 43e317c1
      Linus Torvalds authored
      Pull s390 updates from Heiko Carstens:
      
       - Add ABI to kernel image file which allows e.g. the file utility to
         figure out the kernel version.
      
       - Wire up clone3 system call.
      
       - Add support for kasan bitops instrumentation.
      
       - uapi header cleanup: use __u{16,32,64} instead of uint{16,32,64}_t.
      
       - Provide proper ARCH_ZONE_DMA_BITS so the s390 DMA zone is correctly
         defined with 2 GB instead of the default value of 1 MB.
      
       - Farhan Ali leaves the group of vfio-ccw maintainers.
      
       - Various small vfio-ccw fixes.
      
       - Add missing locking for airq_areas array in virtio code.
      
       - Minor qdio improvements.
      
      * tag 's390-5.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
        MAINTAINERS: vfio-ccw: Remove myself as the maintainer
        s390/mm: use shared variables for sysctl range check
        virtio/s390: fix race on airq_areas[]
        s390/dma: provide proper ARCH_ZONE_DMA_BITS value
        s390/kasan: add bitops instrumentation
        s390/bitops: make test functions return bool
        s390: wire up clone3 system call
        kbuild: enable arch/s390/include/uapi/asm/zcrypt.h for uapi header test
        s390: use __u{16,32,64} instead of uint{16,32,64}_t in uapi header
        s390/hypfs: fix a typo in the name of a function
        s390/qdio: restrict QAOB usage to IQD unicast queues
        s390/qdio: add sanity checks to the fast-requeue path
        s390: enable detection of kernel version from bzImage
        Documentation: fix vfio-ccw doc
        vfio-ccw: Update documentation for csch/hsch
        vfio-ccw: Don't call cp_free if we are processing a channel program
        vfio-ccw: Set pa_nr to 0 if memory allocation fails for pa_iova_pfn
        vfio-ccw: Fix memory leak and don't call cp_free in cp_init
        vfio-ccw: Fix misleading comment when setting orb.cmd.c64
      43e317c1
    • Linus Torvalds's avatar
      Merge tag 'devicetree-fixes-for-5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux · 5efbd937
      Linus Torvalds authored
      Pull Devicetree fixes from Rob Herring:
       "The nvmem changes would typically go thru Greg's tree, but they were
        missed in the merge window. [ Acked by Greg ]
      
        Summary:
      
         - Fix mismatches in $id values and actual filenames. Now checked by
           tools.
      
         - Convert nvmem binding to DT schema
      
         - Fix a typo in of_property_read_bool() kerneldoc
      
         - Remove some redundant description in al-fic interrupt-controller"
      
      * tag 'devicetree-fixes-for-5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
        dt-bindings: Fix more $id value mismatches filenames
        dt-bindings: nvmem: SID: Fix the examples node names
        dt-bindings: nvmem: Add YAML schemas for the generic NVMEM bindings
        of: Fix typo in kerneldoc
        dt-bindings: interrupt-controller: al-fic: remove redundant binding
        dt-bindings: clk: allwinner,sun4i-a10-ccu: Correct path in $id
      5efbd937
    • Linus Torvalds's avatar
      Merge tag 'libnvdimm-fixes-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm · 523634db
      Linus Torvalds authored
      Pull libnvdimm fixes from Dan Williams:
       "A collection of locking and async operations fixes for v5.3-rc2. These
        had been soaking in a branch targeting the merge window, but missed
        due to a regression hunt. This fixed up version has otherwise been in
        -next this past week with no reported issues.
      
        In order to gain confidence in the locking changes the pull also
        includes a debug / instrumentation patch to enable lockdep coverage
        for libnvdimm subsystem operations that depend on the device_lock for
        exclusion. As mentioned in the changelog it is a hack, but it works
        and documents the locking expectations of the sub-system in a way that
        others can use lockdep to verify. The driver core touches got an ack
        from Greg.
      
        Summary:
      
         - Fix duplicate device_unregister() calls (multiple threads competing
           to do unregister work when scheduling device removal from a sysfs
           attribute of the self-same device).
      
         - Fix badblocks registration order bug. Ensure region badblocks are
           initialized in advance of namespace registration.
      
         - Fix a deadlock between the bus lock and probe operations.
      
         - Export device-core infrastructure to coordinate async operations
           via the device ->dead state.
      
         - Add device-core infrastructure to validate device_lock() usage with
           lockdep"
      
      * tag 'libnvdimm-fixes-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
        driver-core, libnvdimm: Let device subsystems add local lockdep coverage
        libnvdimm/bus: Fix wait_nvdimm_bus_probe_idle() ABBA deadlock
        libnvdimm/bus: Stop holding nvdimm_bus_list_mutex over __nd_ioctl()
        libnvdimm/bus: Prepare the nd_ioctl() path to be re-entrant
        libnvdimm/region: Register badblocks before namespaces
        libnvdimm/bus: Prevent duplicate device_unregister() calls
        drivers/base: Introduce kill_device()
      523634db
    • Masahiro Yamada's avatar
      kbuild: remove unused single-used-m · b25e8a23
      Masahiro Yamada authored
      This is unused since commit 9f69a496 ("kbuild: split out *.mod out
      of {single,multi}-used-m rules").
      Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      b25e8a23
    • Masahiro Yamada's avatar
      gen_compile_commands: lower the entry count threshold · cb36955a
      Masahiro Yamada authored
      Running gen_compile_commands.py after building the kernel with
      allnoconfig gave this:
      
      $ ./scripts/gen_compile_commands.py
      WARNING: Found 449 entries. Have you compiled the kernel?
      Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      cb36955a
    • Toru Komatsu's avatar
      .gitignore: Add compilation database file · 26c4c71b
      Toru Komatsu authored
      This file is used by clangd to use language server protocol.
      It can be generated at each compile using scripts/gen_compile_commands.py.
      Therefore it is different depending on the environment and should be
      ignored.
      Signed-off-by: default avatarToru Komatsu <k0ma@utam0k.jp>
      Reviewed-by: default avatarNick Desaulniers <ndesaulniers@google.com>
      Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      26c4c71b
    • Masahiro Yamada's avatar
      kbuild: remove unused objectify macro · b2eff092
      Masahiro Yamada authored
      Commit 415008af ("docs-rst: convert lsm from DocBook to ReST")
      removed the last users of this macro.
      Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      b2eff092
    • Linus Torvalds's avatar
      Merge tag 'for-linus-20190726-2' of git://git.kernel.dk/linux-block · 5168afe6
      Linus Torvalds authored
      Pull block DMA segment fix from Jens Axboe:
       "Here's the virtual boundary segment size fix"
      
      * tag 'for-linus-20190726-2' of git://git.kernel.dk/linux-block:
        block: fix max segment size handling in blk_queue_virt_boundary
      5168afe6
    • Linus Torvalds's avatar
      Merge tag 'selinux-pr-20190726' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux · 40233e7c
      Linus Torvalds authored
      Pull selinux fix from Paul Moore:
       "One small SELinux patch to add some proper bounds/overflow checking
        when adding a new sid/secid"
      
      * tag 'selinux-pr-20190726' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
        selinux: check sidtab limit before adding a new entry
      40233e7c
  7. 26 Jul, 2019 2 commits