1. 23 Jun, 2020 6 commits
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 26e122e9
      Linus Torvalds authored
      Pull kvm fixes from Paolo Bonzini:
       "All bugfixes except for a couple cleanup patches"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
        KVM: VMX: Remove vcpu_vmx's defunct copy of host_pkru
        KVM: x86: allow TSC to differ by NTP correction bounds without TSC scaling
        KVM: X86: Fix MSR range of APIC registers in X2APIC mode
        KVM: VMX: Stop context switching MSR_IA32_UMWAIT_CONTROL
        KVM: nVMX: Plumb L2 GPA through to PML emulation
        KVM: x86/mmu: Avoid mixing gpa_t with gfn_t in walk_addr_generic()
        KVM: LAPIC: ensure APIC map is up to date on concurrent update requests
        kvm: lapic: fix broken vcpu hotplug
        Revert "KVM: VMX: Micro-optimize vmexit time when not exposing PMU"
        KVM: VMX: Add helpers to identify interrupt type from intr_info
        kvm/svm: disable KCSAN for svm_vcpu_run()
        KVM: MIPS: Fix a build error for !CPU_LOONGSON64
      26e122e9
    • Linus Torvalds's avatar
      Merge tag 'for-5.8-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux · 3e08a952
      Linus Torvalds authored
      Pull btrfs fixes from David Sterba:
       "A number of fixes, located in two areas, one performance fix and one
        fixup for better integration with another patchset.
      
         - bug fixes in nowait aio:
             - fix snapshot creation hang after nowait-aio was used
             - fix failure to write to prealloc extent past EOF
             - don't block when extent range is locked
      
         - block group fixes:
             - relocation failure when scrub runs in parallel
             - refcount fix when removing fails
             - fix race between removal and creation
             - space accounting fixes
      
         - reinstante fast path check for log tree at unlink time, fixes
           performance drop up to 30% in REAIM
      
         - kzfree/kfree fixup to ease treewide patchset renaming kzfree"
      
      * tag 'for-5.8-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
        btrfs: use kfree() in btrfs_ioctl_get_subvol_info()
        btrfs: fix RWF_NOWAIT writes blocking on extent ...
      3e08a952
    • Sean Christopherson's avatar
      KVM: VMX: Remove vcpu_vmx's defunct copy of host_pkru · e4553b49
      Sean Christopherson authored
      Remove vcpu_vmx.host_pkru, which got left behind when PKRU support was
      moved to common x86 code.
      
      No functional change intended.
      
      Fixes: 37486135
      
       ("KVM: x86: Fix pkru save/restore when guest CR4.PKE=0, move it to x86.c")
      Signed-off-by: default avatarSean Christopherson <sean.j.christopherson@intel.com>
      Message-Id: <20200617034123.25647-1-sean.j.christopherson@intel.com>
      Reviewed-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
      Reviewed-by: default avatarJim Mattson <jmattson@google.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      e4553b49
    • Marcelo Tosatti's avatar
      KVM: x86: allow TSC to differ by NTP correction bounds without TSC scaling · 26769f96
      Marcelo Tosatti authored
      
      
      The Linux TSC calibration procedure is subject to small variations
      (its common to see +-1 kHz difference between reboots on a given CPU, for example).
      
      So migrating a guest between two hosts with identical processor can fail, in case
      of a small variation in calibrated TSC between them.
      
      Without TSC scaling, the current kernel interface will either return an error
      (if user_tsc_khz <= tsc_khz) or enable TSC catchup mode.
      
      This change enables the following TSC tolerance check to
      accept KVM_SET_TSC_KHZ within tsc_tolerance_ppm (which is 250ppm by default).
      
              /*
               * Compute the variation in TSC rate which is acceptable
               * within the range of tolerance and decide if the
               * rate being applied is within that bounds of the hardware
               * rate.  If so, no scaling or compensation need be done.
               */
              thresh_lo = adjust_tsc_khz(tsc_khz, -tsc_tolerance_ppm);
              thresh_hi = adjust_tsc_khz(tsc_khz, tsc_tolerance_ppm);
              if (user_tsc_khz < thresh_lo || user_tsc_khz > thresh_hi) {
                      pr_debug("kvm: requested TSC rate %u falls outside tolerance [%u,%u]\n", user_tsc_khz, thresh_lo, thresh_hi);
                      use_scaling = 1;
              }
      
      NTP daemon in the guest can correct this difference (NTP can correct upto 500ppm).
      Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
      
      Message-Id: <20200616114741.GA298183@fuller.cnet>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      26769f96
    • Xiaoyao Li's avatar
      KVM: X86: Fix MSR range of APIC registers in X2APIC mode · bf10bd0b
      Xiaoyao Li authored
      Only MSR address range 0x800 through 0x8ff is architecturally reserved
      and dedicated for accessing APIC registers in x2APIC mode.
      
      Fixes: 0105d1a5
      
       ("KVM: x2apic interface to lapic")
      Signed-off-by: default avatarXiaoyao Li <xiaoyao.li@intel.com>
      Message-Id: <20200616073307.16440-1-xiaoyao.li@intel.com>
      Cc: stable@vger.kernel.org
      Reviewed-by: default avatarSean Christopherson <sean.j.christopherson@intel.com>
      Reviewed-by: default avatarJim Mattson <jmattson@google.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      bf10bd0b
    • Sean Christopherson's avatar
      KVM: VMX: Stop context switching MSR_IA32_UMWAIT_CONTROL · bf09fb6c
      Sean Christopherson authored
      Remove support for context switching between the guest's and host's
      desired UMWAIT_CONTROL.  Propagating the guest's value to hardware isn't
      required for correct functionality, e.g. KVM intercepts reads and writes
      to the MSR, and the latency effects of the settings controlled by the
      MSR are not architecturally visible.
      
      As a general rule, KVM should not allow the guest to control power
      management settings unless explicitly enabled by userspace, e.g. see
      KVM_CAP_X86_DISABLE_EXITS.  E.g. Intel's SDM explicitly states that C0.2
      can improve the performance of SMT siblings.  A devious guest could
      disable C0.2 so as to improve the performance of their workloads at the
      detriment to workloads running in the host or on other VMs.
      
      Wholesale removal of UMWAIT_CONTROL context switching also fixes a race
      condition where updates from the host may cause KVM to enter the guest
      with the incorrect value.  Because updates are are propagated to all
      CPUs via IPI (SMP function callback), the value in hardware may be
      stale with respect to the cached value and KVM could enter the guest
      with the wrong value in hardware.  As above, the guest can't observe the
      bad value, but it's a weird and confusing wart in the implementation.
      
      Removal also fixes the unnecessary usage of VMX's atomic load/store MSR
      lists.  Using the lists is only necessary for MSRs that are required for
      correct functionality immediately upon VM-Enter/VM-Exit, e.g. EFER on
      old hardware, or for MSRs that need to-the-uop precision, e.g. perf
      related MSRs.  For UMWAIT_CONTROL, the effects are only visible in the
      kernel via TPAUSE/delay(), and KVM doesn't do any form of delay in
      vcpu_vmx_run().  Using the atomic lists is undesirable as they are more
      expensive than direct RDMSR/WRMSR.
      
      Furthermore, even if giving the guest control of the MSR is legitimate,
      e.g. in pass-through scenarios, it's not clear that the benefits would
      outweigh the overhead.  E.g. saving and restoring an MSR across a VMX
      roundtrip costs ~250 cycles, and if the guest diverged from the host
      that cost would be paid on every run of the guest.  In other words, if
      there is a legitimate use case then it should be enabled by a new
      per-VM capability.
      
      Note, KVM still needs to emulate MSR_IA32_UMWAIT_CONTROL so that it can
      correctly expose other WAITPKG features to the guest, e.g. TPAUSE,
      UMWAIT and UMONITOR.
      
      Fixes: 6e3ba4ab
      
       ("KVM: vmx: Emulate MSR IA32_UMWAIT_CONTROL")
      Cc: stable@vger.kernel.org
      Cc: Jingqi Liu <jingqi.liu@intel.com>
      Cc: Tao Xu <tao3.xu@intel.com>
      Signed-off-by: default avatarSean Christopherson <sean.j.christopherson@intel.com>
      Message-Id: <20200623005135.10414-1-sean.j.christopherson@intel.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      bf09fb6c
  2. 22 Jun, 2020 8 commits
    • Sean Christopherson's avatar
      KVM: nVMX: Plumb L2 GPA through to PML emulation · 2dbebf7a
      Sean Christopherson authored
      Explicitly pass the L2 GPA to kvm_arch_write_log_dirty(), which for all
      intents and purposes is vmx_write_pml_buffer(), instead of having the
      latter pull the GPA from vmcs.GUEST_PHYSICAL_ADDRESS.  If the dirty bit
      update is the result of KVM emulation (rare for L2), then the GPA in the
      VMCS may be stale and/or hold a completely unrelated GPA.
      
      Fixes: c5f983f6
      
       ("nVMX: Implement emulated Page Modification Logging")
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarSean Christopherson <sean.j.christopherson@intel.com>
      Message-Id: <20200622215832.22090-2-sean.j.christopherson@intel.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      2dbebf7a
    • Vitaly Kuznetsov's avatar
      KVM: x86/mmu: Avoid mixing gpa_t with gfn_t in walk_addr_generic() · 312d16c7
      Vitaly Kuznetsov authored
      
      
      translate_gpa() returns a GPA, assigning it to 'real_gfn' seems obviously
      wrong. There is no real issue because both 'gpa_t' and 'gfn_t' are u64 and
      we don't use the value in 'real_gfn' as a GFN, we do
      
       real_gfn = gpa_to_gfn(real_gfn);
      
      instead. 'If you see a "buffalo" sign on an elephant's cage, do not trust
      your eyes', but let's fix it for good.
      
      No functional change intended.
      Signed-off-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
      Message-Id: <20200622151435.752560-1-vkuznets@redhat.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      312d16c7
    • Paolo Bonzini's avatar
      KVM: LAPIC: ensure APIC map is up to date on concurrent update requests · 44d52717
      Paolo Bonzini authored
      
      
      The following race can cause lost map update events:
      
               cpu1                            cpu2
      
                                      apic_map_dirty = true
        ------------------------------------------------------------
                                      kvm_recalculate_apic_map:
                                           pass check
                                               mutex_lock(&kvm->arch.apic_map_lock);
                                               if (!kvm->arch.apic_map_dirty)
                                           and in process of updating map
        -------------------------------------------------------------
          other calls to
             apic_map_dirty = true         might be too late for affected cpu
        -------------------------------------------------------------
                                           apic_map_dirty = false
        -------------------------------------------------------------
          kvm_recalculate_apic_map:
          bail out on
            if (!kvm->arch.apic_map_dirty)
      
      To fix it, record the beginning of an update of the APIC map in
      apic_map_dirty.  If another APIC map change switches apic_map_dirty
      back to DIRTY during the update, kvm_recalculate_apic_map should not
      make it CLEAN, and the other caller will go through the slow path.
      Reported-by: default avatarIgor Mammedov <imammedo@redhat.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      44d52717
    • Linus Torvalds's avatar
      Merge tag 'spi-fix-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi · dd0d7181
      Linus Torvalds authored
      Pull spi fixes from Mark Brown:
       "Quite a lot of fixes here for no single reason.
      
        There's a collection of the usual sort of device specific fixes and
        also a bunch of people have been working on spidev and the userspace
        test program spidev_test so they've got an unusually large collection
        of small fixes"
      
      * tag 'spi-fix-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
        spi: spidev: fix a potential use-after-free in spidev_release()
        spi: spidev: fix a race between spidev_release and spidev_remove
        spi: stm32-qspi: Fix error path in case of -EPROBE_DEFER
        spi: uapi: spidev: Use TABs for alignment
        spi: spi-fsl-dspi: Free DMA memory with matching function
        spi: tools: Add macro definitions to fix build errors
        spi: tools: Make default_tx/rx and input_tx static
        spi: dt-bindings: amlogic, meson-gx-spicc: Fix schema for meson-g12a
        spi: rspi: Use requested instead of maximum bit ra...
      dd0d7181
    • Igor Mammedov's avatar
      kvm: lapic: fix broken vcpu hotplug · af28dfac
      Igor Mammedov authored
      Guest fails to online hotplugged CPU with error
        smpboot: do_boot_cpu failed(-1) to wakeup CPU#4
      
      It's caused by the fact that kvm_apic_set_state(), which used to call
      recalculate_apic_map() unconditionally and pulled hotplugged CPU into
      apic map, is updating map conditionally on state changes.  In this case
      the APIC map is not considered dirty and the is not updated.
      
      Fix the issue by forcing unconditional update from kvm_apic_set_state(),
      like it used to be.
      
      Fixes: 4abaffce
      
       ("KVM: LAPIC: Recalculate apic map in batch")
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarIgor Mammedov <imammedo@redhat.com>
      Message-Id: <20200622160830.426022-1-imammedo@redhat.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      af28dfac
    • Linus Torvalds's avatar
      Merge tag 'regulator-fix-v5.8-rc2' of... · 75164578
      Linus Torvalds authored
      Merge tag 'regulator-fix-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
      
      Pull regulator fixes from Mark Brown:
       "This has a fix for the refactoring out of the pickable ranges
        functionality, plus the removal of a BROKEN dependency on mt6358 now
        that the dependencies were merged in -rc1 and a couple of device
        specific fixes"
      
      * tag 'regulator-fix-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
        regulator: mt6358: Remove BROKEN dependency
        regualtor: pfuze100: correct sw1a/sw2 on pfuze3000
        regulator: Fix pickable ranges mapping
        regulator: da9063: fix LDO9 suspend and warning.
      75164578
    • Linus Torvalds's avatar
      Merge tag 'regmap-fix-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap · 2a000870
      Linus Torvalds authored
      Pull regmap fixes from Mark Brown:
       "A few small fixes, none of which are likely to have any substantial
        impact here - the most substantial one is a fix for a long standing
        memory leak on devices that use register patching which will only have
        an impact if the device is removed and re-added"
      
      * tag 'regmap-fix-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
        regmap: Fix memory leak from regmap_register_patch
        regmap: fix the kerneldoc for regmap_test_bits()
        regmap: fix alignment issue
      2a000870
    • Jason A. Donenfeld's avatar
      Revert "kernel/printk: add kmsg SEEK_CUR handling" · 625d3449
      Jason A. Donenfeld authored
      This reverts commit 8ece3b3e.
      
      This commit broke userspace. Bash uses ESPIPE to determine whether or
      not the file should be read using "unbuffered I/O", which means reading
      1 byte at a time instead of 128 bytes at a time. I used to use bash to
      read through kmsg in a really quite nasty way:
      
          while read -t 0.1 -r line 2>/dev/null || [[ $? -ne 142 ]]; do
             echo "SARU $line"
          done < /dev/kmsg
      
      This will show all lines that can fit into the 128 byte buffer, and skip
      lines that don't. That's pretty awful, but at least it worked.
      
      With this change, bash now tries to do 1-byte reads, which means it
      skips all the lines, which is worse than before.
      
      Now, I don't really care very much about this, and I'm already look for
      a workaround. But I did just spend an hour trying to figure out why my
      scripts were broken. Either way, it makes no difference to me personally
      whether this is reverted, but it might be something to consid...
      625d3449
  3. 21 Jun, 2020 10 commits
    • Linus Torvalds's avatar
      Linux 5.8-rc2 · 48778464
      Linus Torvalds authored
      48778464
    • Linus Torvalds's avatar
      Merge tag 'selinux-pr-20200621' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux · 817d914d
      Linus Torvalds authored
      Pull SELinux fixes from Paul Moore:
       "Three small patches to fix problems in the SELinux code, all found via
        clang.
      
        Two patches fix potential double-free conditions and one fixes an
        undefined return value"
      
      * tag 'selinux-pr-20200621' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
        selinux: fix undefined return of cond_evaluate_expr
        selinux: fix a double free in cond_read_node()/cond_read_list()
        selinux: fix double free
      817d914d
    • Linus Torvalds's avatar
      Merge tag 'pinctrl-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl · 16f4aa9b
      Linus Torvalds authored
      Pull pin control fixes from Linus Walleij:
       "Some early fixes collected during the first week after the merge
        window, all pretty self-evident, with the details below. The revert is
        the crucial thing.
      
         - Fix a warning on the Qualcomm SPMI GPIO chip being instatiated
           twice without a unique irqchip struct
      
         - Use the noirq variants of the suspend and resume callbacks in the
           Tegra driver
      
         - Clean up the errorpath on the MCP23s08 driver
      
         - Revert the use of devm_of_iomap() in the Freescale driver as it was
           regressing the platform
      
         - Add some missing pins in the Qualcomm IPQ6018 driver
      
         - Fix a simple documentation bug in the pinctrl-single driver"
      
      * tag 'pinctrl-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
        pinctrl: single: fix function name in documentation
        pinctrl: qcom: ipq6018 Add missing pins in qpic pin group
        Revert "pinctrl: freescale: imx: Use 'devm_of_iomap()' to avoid a resource leak in case of error in 'imx_pinctrl_probe()'"
        pinctrl: mcp23s08: Split to three parts: fix ptr_ret.cocci warnings
        pinctrl: tegra: Use noirq suspend/resume callbacks
        pinctrl: qcom: spmi-gpio: fix warning about irq chip reusage
      16f4aa9b
    • Linus Torvalds's avatar
      Merge tag 'kbuild-fixes-v5.8' of... · be9160a9
      Linus Torvalds authored
      Merge tag 'kbuild-fixes-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
      
      Pull Kbuild fixes from Masahiro Yamada:
      
       - fix -gz=zlib compiler option test for CONFIG_DEBUG_INFO_COMPRESSED
      
       - improve cc-option in scripts/Kbuild.include to clean up temp files
      
       - improve cc-option in scripts/Kconfig.include for more reliable
         compile option test
      
       - do not copy modules.builtin by 'make install' because it would break
         existing systems
      
       - use 'userprogs' syntax for watch_queue sample
      
      * tag 'kbuild-fixes-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
        samples: watch_queue: build sample program for target architecture
        Revert "Makefile: install modules.builtin even if CONFIG_MODULES=n"
        scripts: Fix typo in headers_install.sh
        kconfig: unify cc-option and as-option
        kbuild: improve cc-option to clean up all temporary files
        Makefile: Improve compressed debug info support detection
      be9160a9
    • Linus Torvalds's avatar
      Merge tag 'powerpc-5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · 75613939
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
      
       - One fix for the interrupt rework we did last release which broke
         KVM-PR
      
       - Three commits fixing some fallout from the READ_ONCE() changes
         interacting badly with our 8xx 16K pages support, which uses a pte_t
         that is a structure of 4 actual PTEs
      
       - A cleanup of the 8xx pte_update() to use the newly added pmd_off()
      
       - A fix for a crash when handling an oops if CONFIG_DEBUG_VIRTUAL is
         enabled
      
       - A minor fix for the SPU syscall generation
      
      Thanks to Aneesh Kumar K.V, Christian Zigotzky, Christophe Leroy, Mike
      Rapoport, Nicholas Piggin.
      
      * tag 'powerpc-5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        powerpc/8xx: Provide ptep_get() with 16k pages
        mm: Allow arches to provide ptep_get()
        mm/gup: Use huge_ptep_get() in gup_hugepte()
        powerpc/syscalls: Use the number when building SPU syscall table
        powerpc/8xx: use pmd_off() to access a ...
      75613939
    • Linus Torvalds's avatar
      Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 · 93bbca27
      Linus Torvalds authored
      Pull crypto fixes from Herbert Xu:
      
       - NULL dereference in octeontx
      
       - PM reference imbalance in ks-sa
      
       - deadlock in crypto manager
      
       - memory leak in drbg
      
       - missing socket limit check on receive SG list size in algif_skcipher
      
       - typos in caam
      
       - warnings in ccp and hisilicon
      
      * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
        crypto: drbg - always try to free Jitter RNG instance
        crypto: marvell/octeontx - Fix a potential NULL dereference
        crypto: algboss - don't wait during notifier callback
        crypto: caam - fix typos
        crypto: ccp - Fix sparse warnings in sev-dev
        crypto: hisilicon - Cap block size at 2^31
        crypto: algif_skcipher - Cap recv SG list at ctx->used
        hwrng: ks-sa - Fix runtime PM imbalance on error
      93bbca27
    • Masahiro Yamada's avatar
      samples: watch_queue: build sample program for target architecture · 214377e9
      Masahiro Yamada authored
      
      
      This userspace program includes UAPI headers exported to usr/include/.
      'make headers' always works for the target architecture (i.e. the same
      architecture as the kernel), so the sample program should be built for
      the target as well. Kbuild now supports 'userprogs' for that.
      
      I also guarded the CONFIG option by 'depends on CC_CAN_LINK' because
      $(CC) may not provide libc.
      Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
      214377e9
    • Masahiro Yamada's avatar
      Revert "Makefile: install modules.builtin even if CONFIG_MODULES=n" · 2c6d9636
      Masahiro Yamada authored
      This reverts commit e0b250b5
      
      ,
      which broke build systems that need to install files to a certain
      path, but do not set INSTALL_MOD_PATH when invoking 'make install'.
      
        $ make INSTALL_PATH=/tmp/destdir install
        mkdir: cannot create directory ‘/lib/modules/5.8.0-rc1+/’: Permission denied
        Makefile:1342: recipe for target '_builtin_inst_' failed
        make: *** [_builtin_inst_] Error 1
      
      While modules.builtin is useful also for CONFIG_MODULES=n, this change
      in the behavior is quite unexpected. Maybe "make modules_install"
      can install modules.builtin irrespective of CONFIG_MODULES as Jonas
      originally suggested.
      
      Anyway, that commit should be reverted ASAP.
      Reported-by: default avatarDouglas Anderson <dianders@chromium.org>
      Reported-by: default avatarGuenter Roeck <linux@roeck-us.net>
      Cc: Jonas Karlman <jonas@kwiboo.se>
      Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
      Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
      Tested-by: default avatarGuenter Roeck <linux@roeck-us.net>
      2c6d9636
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · 64677779
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "One minor fix and two patches reworking the ata dma drain for the
        !CONFIG_LIBATA case. The latter is a 5.7 regression fix"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        scsi: Wire up ata_scsi_dma_need_drain for SAS HBA drivers
        scsi: libata: Provide an ata_scsi_dma_need_drain stub for !CONFIG_ATA
        scsi: ufs-bsg: Fix runtime PM imbalance on error
      64677779
    • Linus Torvalds's avatar
      Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux · a5c6a1f0
      Linus Torvalds authored
      Pull i2c fixes from Wolfram Sang:
      
       - a small collection of remaining API conversion patches (all acked)
         which allow to finally remove the deprecated API
      
       - some documentation fixes and a MAINTAINERS addition
      
      * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
        MAINTAINERS: Add robert and myself as qcom i2c cci maintainers
        i2c: smbus: Fix spelling mistake in the comments
        Documentation/i2c: SMBus start signal is S not A
        i2c: remove deprecated i2c_new_device API
        Documentation: media: convert to use i2c_new_client_device()
        video: backlight: tosa_lcd: convert to use i2c_new_client_device()
        x86/platform/intel-mid: convert to use i2c_new_client_device()
        drm: encoder_slave: use new I2C API
        drm: encoder_slave: fix refcouting error for modules
      a5c6a1f0
  4. 20 Jun, 2020 13 commits
    • Drew Fustini's avatar
      pinctrl: single: fix function name in documentation · 25fae752
      Drew Fustini authored
      
      
      Use the correct the function name in the documentation for
      "pcs_parse_one_pinctrl_entry()".
      
      "smux_parse_one_pinctrl_entry()" appears to be an artifact from the
      development of a prior patch series ("simple pinmux driver") which
      transformed into pinctrl-single.
      Signed-off-by: default avatarDrew Fustini <drew@beagleboard.org>
      Link: https://lore.kernel.org/r/20200612112758.GA3407886@x1
      
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      25fae752
    • Linus Torvalds's avatar
      Merge tag 'trace-v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace · 8b6ddd10
      Linus Torvalds authored
      Pull tracing fixes from Steven Rostedt:
      
       - Have recordmcount work with > 64K sections (to support LTO)
      
       - kprobe RCU fixes
      
       - Correct a kprobe critical section with missing mutex
      
       - Remove redundant arch_disarm_kprobe() call
      
       - Fix lockup when kretprobe triggers within kprobe_flush_task()
      
       - Fix memory leak in fetch_op_data operations
      
       - Fix sleep in atomic in ftrace trace array sample code
      
       - Free up memory on failure in sample trace array code
      
       - Fix incorrect reporting of function_graph fields in format file
      
       - Fix quote within quote parsing in bootconfig
      
       - Fix return value of bootconfig tool
      
       - Add testcases for bootconfig tool
      
       - Fix maybe uninitialized warning in ftrace pid file code
      
       - Remove unused variable in tracing_iter_reset()
      
       - Fix some typos
      
      * tag 'trace-v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
        ftrace: Fix maybe-uninitialized compiler warning
        tools/bootconfig: Add testcase for show-command and quotes test
        tools/bootconfig: Fix to return 0 if succeeded to show the bootconfig
        tools/bootconfig: Fix to use correct quotes for value
        proc/bootconfig: Fix to use correct quotes for value
        tracing: Remove unused event variable in tracing_iter_reset
        tracing/probe: Fix memleak in fetch_op_data operations
        trace: Fix typo in allocate_ftrace_ops()'s comment
        tracing: Make ftrace packed events have align of 1
        sample-trace-array: Remove trace_array 'sample-instance'
        sample-trace-array: Fix sleeping function called from invalid context
        kretprobe: Prevent triggering kretprobe from within kprobe_flush_task
        kprobes: Remove redundant arch_disarm_kprobe() call
        kprobes: Fix to protect kick_kprobe_optimizer() by kprobe_mutex
        kprobes: Use non RCU traversal APIs on kprobe_tables if possible
        kprobes: Suppress the suspicious RCU warning on kprobes
        recordmcount: support >64k sections
      8b6ddd10
    • Linus Torvalds's avatar
      Merge tag 'libnvdimm-for-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm · eede2b9b
      Linus Torvalds authored
      Pull libnvdimm updates from Dan Williams:
       "A feature (papr_scm health retrieval) and a fix (sysfs attribute
        visibility) for v5.8.
      
        Vaibhav explains in the merge commit below why missing v5.8 would be
        painful and I agreed to try a -rc2 pull because only cosmetics kept
        this out of -rc1 and his initial versions were posted in more than
        enough time for v5.8 consideration:
      
         'These patches are tied to specific features that were committed to
          customers in upcoming distros releases (RHEL and SLES) whose
          time-lines are tied to 5.8 kernel release.
      
          Being able to track the health of an nvdimm is critical for our
          customers that are running workloads leveraging papr-scm nvdimms.
          Missing the 5.8 kernel would mean missing the distro timelines and
          shifting forward the availability of this feature in distro kernels
          by at least 6 months'
      
        Summary:
      
         - Fix the visibility of the region 'align' attribute.
      
           The new unit tests for region alignment handling caught a corner
           case where the alignment cannot be specified if the region is
           converted from static to dynamic provisioning at runtime.
      
         - Add support for device health retrieval for the persistent memory
           supported by the papr_scm driver.
      
           This includes both the standard sysfs "health flags" that the nfit
           persistent memory driver publishes and a mechanism for the ndctl
           tool to retrieve a health-command payload"
      
      * tag 'libnvdimm-for-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
        nvdimm/region: always show the 'align' attribute
        powerpc/papr_scm: Implement support for PAPR_PDSM_HEALTH
        ndctl/papr_scm,uapi: Add support for PAPR nvdimm specific methods
        powerpc/papr_scm: Improve error logging and handling papr_scm_ndctl()
        powerpc/papr_scm: Fetch nvdimm health information from PHYP
        seq_buf: Export seq_buf_printf
        powerpc: Document details on H_SCM_HEALTH hcall
      eede2b9b
    • Sivaprakash Murugesan's avatar
      pinctrl: qcom: ipq6018 Add missing pins in qpic pin group · 7f5f4de8
      Sivaprakash Murugesan authored
      The patch adds missing qpic data pins to qpic pingroup. These pins are
      necessary for the qpic nand to work.
      
      Fixes: ef1ea54e
      
       ("pinctrl: qcom: Add ipq6018 pinctrl driver")
      Signed-off-by: default avatarSivaprakash Murugesan <sivaprak@codeaurora.org>
      Link: https://lore.kernel.org/r/1592541089-17700-1-git-send-email-sivaprak@codeaurora.org
      
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      7f5f4de8
    • Haibo Chen's avatar
      Revert "pinctrl: freescale: imx: Use 'devm_of_iomap()' to avoid a resource... · 13f2d25b
      Haibo Chen authored
      Revert "pinctrl: freescale: imx: Use 'devm_of_iomap()' to avoid a resource leak in case of error in 'imx_pinctrl_probe()'"
      
      This reverts commit ba403242.
      
      After commit 26d8cde5 ("pinctrl: freescale: imx: add shared
      input select reg support"). i.MX7D has two iomux controllers
      iomuxc and iomuxc-lpsr which share select_input register for
      daisy chain settings.
      If use 'devm_of_iomap()', when probe the iomuxc-lpsr, will call
      devm_request_mem_region() for the region <0x30330000-0x3033ffff>
      for the first time. Then, next time when probe the iomuxc, API
      devm_platform_ioremap_resource() will also use the API
      devm_request_mem_region() for the share region <0x30330000-0x3033ffff>
      again, then cause issue, log like below:
      
      [    0.179561] imx7d-pinctrl 302c0000.iomuxc-lpsr: initialized IMX pinctrl driver
      [    0.191742] imx7d-pinctrl 30330000.pinctrl: can't request region for resource [mem 0x30330000-0x3033ffff]
      [    0.191842] imx7d-pinctrl: probe of 30330000.pinctrl failed with error -16
      
      Fixes: ba403242
      
       ("pinctrl: freescale: imx: Use 'devm_of_iomap()' to avoid a resource leak in case of error in 'imx_pinctrl_probe()'")
      Signed-off-by: default avatarHaibo Chen <haibo.chen@nxp.com>
      Reviewed-by: default avatarDong Aisheng <aisheng.dong@nxp.com>
      Link: https://lore.kernel.org/r/1591673223-1680-1-git-send-email-haibo.chen@nxp.com
      
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      13f2d25b
    • Linus Torvalds's avatar
      Merge tag 's390-5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · 1566feea
      Linus Torvalds authored
      Pull s390 fixes from Vasily Gorbik:
      
       - a few ptrace fixes mostly for strace and seccomp_bpf kernel tests
         findings
      
       - cleanup unused pm callbacks in virtio ccw
      
       - replace kmalloc + memset with kzalloc in crypto
      
       - use $(LD) for vDSO linkage to make clang happy
      
       - fix vDSO clock_getres() to preserve the same behaviour as
         posix_get_hrtimer_res()
      
       - fix workqueue cpumask warning when NUMA=n and nr_node_ids=2
      
       - reduce SLSB writes during input processing, improve warnings and
         cleanup qdio_data usage in qdio
      
       - a few fixes to use scnprintf() instead of snprintf()
      
      * tag 's390-5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
        s390: fix syscall_get_error for compat processes
        s390/qdio: warn about unexpected SLSB states
        s390/qdio: clean up usage of qdio_data
        s390/numa: let NODES_SHIFT depend on NEED_MULTIPLE_NODES
        s390/vdso: fix vDSO clock_getres()
        s390/vdso: Use $(LD) instead of $(CC) to link vDSO
        s390/protvirt: use scnprintf() instead of snprintf()
        s390: use scnprintf() in sys_##_prefix##_##_name##_show
        s390/crypto: use scnprintf() instead of snprintf()
        s390/zcrypt: use kzalloc
        s390/virtio: remove unused pm callbacks
        s390/qdio: reduce SLSB writes during Input Queue processing
        selftests/seccomp: s390 shares the syscall and return value register
        s390/ptrace: fix setting syscall number
        s390/ptrace: pass invalid syscall numbers to tracing
        s390/ptrace: return -ENOSYS when invalid syscall is supplied
        s390/seccomp: pass syscall arguments via seccomp_data
        s390/qdio: fine-tune SLSB update
      1566feea
    • Linus Torvalds's avatar
      Merge tag 'riscv-for-linus-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux · 7fdfbe08
      Linus Torvalds authored
      Pull RISC-V fixes from Palmer Dabbelt:
      
       - a workaround for a compiler surprise related to the "r" inline
         assembly that allows LLVM to boot.
      
       - a fix to avoid WX-only mappings, which the ISA does not allow. While
         this probably manifests in many ways, the bug was found in stress-ng.
      
       - a missing lock in set_direct_map_*(), which due to a recent lockdep
         change started asserting.
      
      * tag 'riscv-for-linus-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
        RISC-V: Acquire mmap lock before invoking walk_page_range
        RISC-V: Don't allow write+exec only page mapping request in mmap
        riscv/atomic: Fix sign extension for RV64I
      7fdfbe08
    • Linus Torvalds's avatar
      Merge tag 'linux-kselftest-5.8-rc2' of... · 27c27605
      Linus Torvalds authored
      Merge tag 'linux-kselftest-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
      
      Pull kselftest cleanups from Shuah Khan:
      
       - ftrace "requires:" list for simplifying and unifying requirement
         checks for each test case, adding "requires:" line instead of
         checking required ftrace interfaces in each test case.
      
       - a minor spelling correction patch
      
      * tag 'linux-kselftest-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
        selftests/ftrace: Support ":README" suffix for requires
        selftests/ftrace: Support ":tracer" suffix for requires
        selftests/ftrace: Convert check_filter_file() with requires list
        selftests/ftrace: Convert required interface checks into requires list
        selftests/ftrace: Add "requires:" list support
        selftests/ftrace: Return unsupported for the unconfigured features
        selftests/ftrace: Allow ":" in description
        tools: testing: ftrace: trigger: fix spelling mistake
      27c27605
    • David Howells's avatar
      afs: Fix hang on rmmod due to outstanding timer · 5481fc6e
      David Howells authored
      The fileserver probe timer, net->fs_probe_timer, isn't cancelled when
      the kafs module is being removed and so the count it holds on
      net->servers_outstanding doesn't get dropped..
      
      This causes rmmod to wait forever.  The hung process shows a stack like:
      
      	afs_purge_servers+0x1b5/0x23c [kafs]
      	afs_net_exit+0x44/0x6e [kafs]
      	ops_exit_list+0x72/0x93
      	unregister_pernet_operations+0x14c/0x1ba
      	unregister_pernet_subsys+0x1d/0x2a
      	afs_exit+0x29/0x6f [kafs]
      	__do_sys_delete_module.isra.0+0x1a2/0x24b
      	do_syscall_64+0x51/0x95
      	entry_SYSCALL_64_after_hwframe+0x44/0xa9
      
      Fix this by:
      
       (1) Attempting to cancel the probe timer and, if successful, drop the
           count that the timer was holding.
      
       (2) Make the timer function just drop the count and not schedule the
           prober if the afs portion of net namespace is being destroyed.
      
      Also, whilst we're at it, make the following changes:
      
       (3) Initialise net->servers_outstanding to 1 and decrement it before
           waiting on it so that it doesn't generate wake up events by being
           decremented to 0 until we're cleaning up.
      
       (4) Switch the atomic_dec() on ->servers_outstanding for ->fs_timer in
           afs_purge_servers() to use the helper function for that.
      
      Fixes: f6cbb368
      
       ("afs: Actively poll fileservers to maintain NAT or firewall openings")
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      5481fc6e
    • David Howells's avatar
      afs: Fix afs_do_lookup() to call correct fetch-status op variant · f8ea5c7b
      David Howells authored
      Fix afs_do_lookup()'s fallback case for when FS.InlineBulkStatus isn't
      supported by the server.
      
      In the fallback, it calls FS.FetchStatus for the specific vnode it's
      meant to be looking up.  Commit b6489a49 broke this by renaming one
      of the two identically-named afs_fetch_status_operation descriptors to
      something else so that one of them could be made non-static.  The site
      that used the renamed one, however, wasn't renamed and didn't produce
      any warning because the other was declared in a header.
      
      Fix this by making afs_do_lookup() use the renamed variant.
      
      Note that there are two variants of the success method because one is
      called from ->lookup() where we may or may not have an inode, but can't
      call iget until after we've talked to the server - whereas the other is
      called from within iget where we have an inode, but it may or may not be
      initialised.
      
      The latter variant expects there to be an inode, but because it's being
      called from there former case, there might not be - resulting in an oops
      like the following:
      
        BUG: kernel NULL pointer dereference, address: 00000000000000b0
        ...
        RIP: 0010:afs_fetch_status_success+0x27/0x7e
        ...
        Call Trace:
          afs_wait_for_operation+0xda/0x234
          afs_do_lookup+0x2fe/0x3c1
          afs_lookup+0x3c5/0x4bd
          __lookup_slow+0xcd/0x10f
          walk_component+0xa2/0x10c
          path_lookupat.isra.0+0x80/0x110
          filename_lookup+0x81/0x104
          vfs_statx+0x76/0x109
          __do_sys_newlstat+0x39/0x6b
          do_syscall_64+0x4c/0x78
          entry_SYSCALL_64_after_hwframe+0x44/0xa9
      
      Fixes: b6489a49
      
       ("afs: Fix silly rename")
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      f8ea5c7b
    • Christophe Leroy's avatar
      powerpc/8xx: Provide ptep_get() with 16k pages · c0e1c8c2
      Christophe Leroy authored
      READ_ONCE() now enforces atomic read, which leads to:
      
        CC      mm/gup.o
      In file included from ./include/linux/kernel.h:11:0,
                       from mm/gup.c:2:
      In function 'gup_hugepte.constprop',
          inlined from 'gup_huge_pd.isra.79' at mm/gup.c:2465:8:
      ./include/linux/compiler.h:392:38: error: call to '__compiletime_assert_222' declared with attribute error: Unsupported access size for {READ,WRITE}_ONCE().
        _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                                            ^
      ./include/linux/compiler.h:373:4: note: in definition of macro '__compiletime_assert'
          prefix ## suffix();    \
          ^
      ./include/linux/compiler.h:392:2: note: in expansion of macro '_compiletime_assert'
        _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
        ^
      ./include/linux/compiler.h:405:2: note: in expansion of macro 'compiletime_assert'
        compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
        ^
      ./include/linux/compiler.h:291:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
        compiletime_assert_rwonce_type(x);    \
        ^
      mm/gup.c:2428:8: note: in expansion of macro 'READ_ONCE'
        pte = READ_ONCE(*ptep);
              ^
      In function 'gup_get_pte',
          inlined from 'gup_pte_range' at mm/gup.c:2228:9,
          inlined from 'gup_pmd_range' at mm/gup.c:2613:15,
          inlined from 'gup_pud_range' at mm/gup.c:2641:15,
          inlined from 'gup_p4d_range' at mm/gup.c:2666:15,
          inlined from 'gup_pgd_range' at mm/gup.c:2694:15,
          inlined from 'internal_get_user_pages_fast' at mm/gup.c:2795:3:
      ./include/linux/compiler.h:392:38: error: call to '__compiletime_assert_219' declared with attribute error: Unsupported access size for {READ,WRITE}_ONCE().
        _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                                            ^
      ./include/linux/compiler.h:373:4: note: in definition of macro '__compiletime_assert'
          prefix ## suffix();    \
          ^
      ./include/linux/compiler.h:392:2: note: in expansion of macro '_compiletime_assert'
        _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
        ^
      ./include/linux/compiler.h:405:2: note: in expansion of macro 'compiletime_assert'
        compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
        ^
      ./include/linux/compiler.h:291:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
        compiletime_assert_rwonce_type(x);    \
        ^
      mm/gup.c:2199:9: note: in expansion of macro 'READ_ONCE'
        return READ_ONCE(*ptep);
               ^
      make[2]: *** [mm/gup.o] Error 1
      
      Define ptep_get() on 8xx when using 16k pages.
      
      Fixes: 9e343b46
      
       ("READ_ONCE: Enforce atomicity for {READ,WRITE}_ONCE() memory accesses")
      Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
      Acked-by: default avatarWill Deacon <will@kernel.org>
      Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      Link: https://lore.kernel.org/r/341688399c1b102756046d19ea6ce39db1ae4742.1592225558.git.christophe.leroy@csgroup.eu
      c0e1c8c2
    • Christophe Leroy's avatar
      mm: Allow arches to provide ptep_get() · 481e980a
      Christophe Leroy authored
      Since commit 9e343b46 ("READ_ONCE: Enforce atomicity for
      {READ,WRITE}_ONCE() memory accesses") it is not possible anymore to
      use READ_ONCE() to access complex page table entries like the one
      defined for powerpc 8xx with 16k size pages.
      
      Define a ptep_get() helper that architectures can override instead
      of performing a READ_ONCE() on the page table entry pointer.
      
      Fixes: 9e343b46
      
       ("READ_ONCE: Enforce atomicity for {READ,WRITE}_ONCE() memory accesses")
      Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
      Acked-by: default avatarWill Deacon <will@kernel.org>
      Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      Link: https://lore.kernel.org/r/087fa12b6e920e32315136b998aa834f99242695.1592225558.git.christophe.leroy@csgroup.eu
      481e980a
    • Christophe Leroy's avatar
      mm/gup: Use huge_ptep_get() in gup_hugepte() · 55ca2263
      Christophe Leroy authored
      gup_hugepte() reads hugepage table entries, it can't read
      them directly, huge_ptep_get() must be used.
      
      Fixes: 9e343b46
      
       ("READ_ONCE: Enforce atomicity for {READ,WRITE}_ONCE() memory accesses")
      Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
      Acked-by: default avatarWill Deacon <will@kernel.org>
      Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      Link: https://lore.kernel.org/r/ffc3714334c3bfaca6f13788ad039e8759ae413f.1592225558.git.christophe.leroy@csgroup.eu
      55ca2263
  5. 19 Jun, 2020 3 commits
    • Dan Williams's avatar
      Merge branch 'for-5.8/papr_scm' into libnvdimm-for-next · 9df24eae
      Dan Williams authored
      Include the papr_scm health retrieval feature for v5.8-rc2. The
      functionality was initially posted well in advance of the merge window,
      but review comments and a late build-bot warning kept them out of the
      v5.8-rc1 libnvdimm pull request.
      
      Vaibhav notes:
      These patches are tied to specific features that were committed to
      customers in upcoming distros releases (RHEL and SLES) whose time-lines
      are tied to 5.8 kernel release.
      
      Being able to track the health of an nvdimm is critical for our
      customers that are running workloads leveraging papr-scm nvdimms.
      Missing the 5.8 kernel would mean missing the distro timelines and
      shifting forward the availability of this feature in distro kernels by
      at least 6 months.
      9df24eae
    • Linus Torvalds's avatar
      Merge tag 'io_uring-5.8-2020-06-19' of git://git.kernel.dk/linux-block · 4333a9b0
      Linus Torvalds authored
      Pull io_uring fixes from Jens Axboe:
      
       - Catch a case where io_sq_thread() didn't do proper mm acquire
      
       - Ensure poll completions are reaped on shutdown
      
       - Async cancelation and run fixes (Pavel)
      
       - io-poll race fixes (Xiaoguang)
      
       - Request cleanup race fix (Xiaoguang)
      
      * tag 'io_uring-5.8-2020-06-19' of git://git.kernel.dk/linux-block:
        io_uring: fix possible race condition against REQ_F_NEED_CLEANUP
        io_uring: reap poll completions while waiting for refs to drop on exit
        io_uring: acquire 'mm' for task_work for SQPOLL
        io_uring: add memory barrier to synchronize io_kiocb's result and iopoll_completed
        io_uring: don't fail links for EAGAIN error in IOPOLL mode
        io_uring: cancel by ->task not pid
        io_uring: lazy get task
        io_uring: batch cancel in io_uring_cancel_files()
        io_uring: cancel all task's requests on exit
        io-wq: add an option to cancel all matched reqs
        io-wq: reorder cancellation pending -> running
        io_uring: fix lazy work init
      4333a9b0
    • Linus Torvalds's avatar
      Merge tag 'block-5.8-2020-06-19' of git://git.kernel.dk/linux-block · d2b1c81f
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
      
       - Use import_uuid() where appropriate (Andy)
      
       - bcache fixes (Coly, Mauricio, Zhiqiang)
      
       - blktrace sparse warnings fix (Jan)
      
       - blktrace concurrent setup fix (Luis)
      
       - blkdev_get use-after-free fix (Jason)
      
       - Ensure all blk-mq maps are updated (Weiping)
      
       - Loop invalidate bdev fix (Zheng)
      
      * tag 'block-5.8-2020-06-19' of git://git.kernel.dk/linux-block:
        block: make function 'kill_bdev' static
        loop: replace kill_bdev with invalidate_bdev
        partitions/ldm: Replace uuid_copy() with import_uuid() where it makes sense
        block: update hctx map when use multiple maps
        blktrace: Avoid sparse warnings when assigning q->blk_trace
        blktrace: break out of blktrace setup on concurrent calls
        block: Fix use-after-free in blkdev_get()
        trace/events/block.h: drop kernel-doc for dropped function parameter
        blk-mq: Remove redundant 'return' statement
        bcache: pr_info() format clean up in bcache_device_in...
      d2b1c81f