1. 06 Dec, 2022 5 commits
    • Will Deacon's avatar
      Merge branch 'for-next/errata' into for-next/core · f455fb65
      Will Deacon authored
      * for-next/errata:
        arm64: errata: Workaround possible Cortex-A715 [ESR|FAR]_ELx corruption
        arm64: Add Cortex-715 CPU part definition
      f455fb65
    • Will Deacon's avatar
      Merge branch 'for-next/dynamic-scs' into for-next/core · f6ffa4c8
      Will Deacon authored
      * for-next/dynamic-scs:
        arm64: implement dynamic shadow call stack for Clang
        scs: add support for dynamic shadow call stacks
        arm64: unwind: add asynchronous unwind tables to kernel and modules
      f6ffa4c8
    • Will Deacon's avatar
      Merge branch 'for-next/cpufeature' into for-next/core · 9f930478
      Will Deacon authored
      * for-next/cpufeature:
        kselftest/arm64: Add SVE 2.1 to hwcap test
        arm64/hwcap: Add support for SVE 2.1
        kselftest/arm64: Add FEAT_RPRFM to the hwcap test
        arm64/hwcap: Add support for FEAT_RPRFM
        kselftest/arm64: Add FEAT_CSSC to the hwcap selftest
        arm64/hwcap: Add support for FEAT_CSSC
        arm64: Enable data independent timing (DIT) in the kernel
      9f930478
    • Will Deacon's avatar
      Merge branch 'for-next/asm-const' into for-next/core · d49d7c2e
      Will Deacon authored
      * for-next/asm-const:
        arm64: alternative: constify alternative_has_feature_* argument
        arm64: jump_label: mark arguments as const to satisfy asm constraints
      d49d7c2e
    • Will Deacon's avatar
      Merge branch 'for-next/acpi' into for-next/core · c46ae1fc
      Will Deacon authored
      * for-next/acpi:
        ACPI: APMT: Fix kerneldoc and indentation
        ACPI: Enable FPDT on arm64
        arm_pmu: acpi: handle allocation failure
        arm_pmu: rework ACPI probing
        arm_pmu: factor out PMU matching
        arm_pmu: acpi: factor out PMU<->CPU association
        ACPI/IORT: Update SMMUv3 DeviceID support
        ACPI: ARM Performance Monitoring Unit Table (APMT) initial support
      c46ae1fc
  2. 18 Nov, 2022 2 commits
  3. 15 Nov, 2022 1 commit
  4. 14 Nov, 2022 1 commit
  5. 09 Nov, 2022 9 commits
  6. 08 Nov, 2022 2 commits
    • Ard Biesheuvel's avatar
      arm64: Enable data independent timing (DIT) in the kernel · 01ab991f
      Ard Biesheuvel authored
      The ARM architecture revision v8.4 introduces a data independent timing
      control (DIT) which can be set at any exception level, and instructs the
      CPU to avoid optimizations that may result in a correlation between the
      execution time of certain instructions and the value of the data they
      operate on.
      
      The DIT bit is part of PSTATE, and is therefore context switched as
      usual, given that it becomes part of the saved program state (SPSR) when
      taking an exception. We have also defined a hwcap for DIT, and so user
      space can discover already whether or nor DIT is available. This means
      that, as far as user space is concerned, DIT is wired up and fully
      functional.
      
      In the kernel, however, we never bothered with DIT: we disable at it
      boot (i.e., INIT_PSTATE_EL1 has DIT cleared) and ignore the fact that we
      might run with DIT enabled if user space happened to set it.
      
      Currently, we have no idea whether or not running privileged code with
      DIT disabled on a CPU that implements support for it may result in a
      side channel that exposes privileged data to unprivileged user space
      processes, so let's be cautious and just enable DIT while running in the
      kernel if supported by all CPUs.
      
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Will Deacon <will@kernel.org>
      Cc: Mark Rutland <mark.rutland@arm.com>
      Cc: Marc Zyngier <maz@kernel.org>
      Cc: Eric Biggers <ebiggers@kernel.org>
      Cc: Jason A. Donenfeld <Jason@zx2c4.com>
      Cc: Kees Cook <keescook@chromium.org>
      Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
      Cc: Adam Langley <agl@google.com>
      Link: https://lore.kernel.org/all/YwgCrqutxmX0W72r@gmail.com/Signed-off-by: default avatarArd Biesheuvel <ardb@kernel.org>
      Acked-by: default avatarMark Rutland <mark.rutland@arm.com>
      Link: https://lore.kernel.org/r/20221107172400.1851434-1-ardb@kernel.org
      [will: Removed cpu_has_dit() as per Mark's suggestion on the list]
      Signed-off-by: default avatarWill Deacon <will@kernel.org>
      01ab991f
    • Mark Rutland's avatar
      arm_pmu: acpi: handle allocation failure · a8731264
      Mark Rutland authored
      One of the failure paths in the arm_pmu ACPI code is missing an early
      return, permitting a NULL pointer dereference upon a memory allocation
      failure.
      
      Add the missing return.
      
      Fixes: fe40ffdb ("arm_pmu: rework ACPI probing")
      Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
      Reported-by: default avatarWill Deacon <will@kernel.org>
      Link: https://lore.kernel.org/r/20221108093725.1239563-1-mark.rutland@arm.comSigned-off-by: default avatarWill Deacon <will@kernel.org>
      a8731264
  7. 07 Nov, 2022 7 commits
  8. 06 Nov, 2022 13 commits
    • Linus Torvalds's avatar
      Linux 6.1-rc4 · f0c4d9fc
      Linus Torvalds authored
      f0c4d9fc
    • Linus Torvalds's avatar
      Merge tag 'cxl-fixes-for-6.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl · 16c7a368
      Linus Torvalds authored
      Pull cxl fixes from Dan Williams:
       "Several fixes for CXL region creation crashes, leaks and failures.
      
        This is mainly fallout from the original implementation of dynamic CXL
        region creation (instantiate new physical memory pools) that arrived
        in v6.0-rc1.
      
        Given the theme of "failures in the presence of pass-through decoders"
        this also includes new regression test infrastructure for that case.
      
        Summary:
      
         - Fix region creation crash with pass-through decoders
      
         - Fix region creation crash when no decoder allocation fails
      
         - Fix region creation crash when scanning regions to enforce the
           increasing physical address order constraint that CXL mandates
      
         - Fix a memory leak for cxl_pmem_region objects, track 1:N instead of
           1:1 memory-device-to-region associations.
      
         - Fix a memory leak for cxl_region objects when regions with active
           targets are deleted
      
         - Fix assignment of NUMA nodes to CXL regions by CFMWS (CXL Window)
           emulated proximity domains.
      
         - Fix region creation failure for switch attached devices downstream
           of a single-port host-bridge
      
         - Fix false positive memory leak of cxl_region objects by recycling
           recently used region ids rather than freeing them
      
         - Add regression test infrastructure for a pass-through decoder
           configuration
      
         - Fix some mailbox payload handling corner cases"
      
      * tag 'cxl-fixes-for-6.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
        cxl/region: Recycle region ids
        cxl/region: Fix 'distance' calculation with passthrough ports
        tools/testing/cxl: Add a single-port host-bridge regression config
        tools/testing/cxl: Fix some error exits
        cxl/pmem: Fix cxl_pmem_region and cxl_memdev leak
        cxl/region: Fix cxl_region leak, cleanup targets at region delete
        cxl/region: Fix region HPA ordering validation
        cxl/pmem: Use size_add() against integer overflow
        cxl/region: Fix decoder allocation crash
        ACPI: NUMA: Add CXL CFMWS 'nodes' to the possible nodes set
        cxl/pmem: Fix failure to account for 8 byte header for writes to the device LSA.
        cxl/region: Fix null pointer dereference due to pass through decoder commit
        cxl/mbox: Add a check on input payload size
      16c7a368
    • Linus Torvalds's avatar
      Merge tag 'hwmon-for-v6.1-rc4' of... · aa529949
      Linus Torvalds authored
      Merge tag 'hwmon-for-v6.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
      
      Pull hwmon fixes from Guenter Roeck:
       "Fix two regressions:
      
         - Commit 54cc3dbf ("hwmon: (pmbus) Add regulator supply into
           macro") resulted in regulator undercount when disabling regulators.
           Revert it.
      
         - The thermal subsystem rework caused the scmi driver to no longer
           register with the thermal subsystem because index values no longer
           match. To fix the problem, the scmi driver now directly registers
           with the thermal subsystem, no longer through the hwmon core"
      
      * tag 'hwmon-for-v6.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
        Revert "hwmon: (pmbus) Add regulator supply into macro"
        hwmon: (scmi) Register explicitly with Thermal Framework
      aa529949
    • Linus Torvalds's avatar
      Merge tag 'perf_urgent_for_v6.1_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 727ea09e
      Linus Torvalds authored
      Pull perf fixes from Borislav Petkov:
      
       - Add Cooper Lake's stepping to the PEBS guest/host events isolation
         fixed microcode revisions checking quirk
      
       - Update Icelake and Sapphire Rapids events constraints
      
       - Use the standard energy unit for Sapphire Rapids in RAPL
      
       - Fix the hw_breakpoint test to fail more graciously on !SMP configs
      
      * tag 'perf_urgent_for_v6.1_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        perf/x86/intel: Add Cooper Lake stepping to isolation_ucodes[]
        perf/x86/intel: Fix pebs event constraints for SPR
        perf/x86/intel: Fix pebs event constraints for ICL
        perf/x86/rapl: Use standard Energy Unit for SPR Dram RAPL domain
        perf/hw_breakpoint: test: Skip the test if dependencies unmet
      727ea09e
    • Linus Torvalds's avatar
      Merge tag 'x86_urgent_for_v6.1_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · f6f52047
      Linus Torvalds authored
      Pull x86 fixes from Borislav Petkov:
      
       - Add new Intel CPU models
      
       - Enforce that TDX guests are successfully loaded only on TDX hardware
         where virtualization exception (#VE) delivery on kernel memory is
         disabled because handling those in all possible cases is "essentially
         impossible"
      
       - Add the proper include to the syscall wrappers so that BTF can see
         the real pt_regs definition and not only the forward declaration
      
      * tag 'x86_urgent_for_v6.1_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/cpu: Add several Intel server CPU model numbers
        x86/tdx: Panic on bad configs that #VE on "private" memory access
        x86/tdx: Prepare for using "INFO" call for a second purpose
        x86/syscall: Include asm/ptrace.h in syscall_wrapper header
      f6f52047
    • Linus Torvalds's avatar
      Merge tag 'kbuild-fixes-v6.1-2' of... · 35697d81
      Linus Torvalds authored
      Merge tag 'kbuild-fixes-v6.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
      
      Pull Kbuild fixes from Masahiro Yamada:
      
       - Use POSIX-compatible grep options
      
       - Document git-related tips for reproducible builds
      
       - Fix a typo in the modpost rule
      
       - Suppress SIGPIPE error message from gcc-ar and llvm-ar
      
       - Fix segmentation fault in the menuconfig search
      
      * tag 'kbuild-fixes-v6.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
        kconfig: fix segmentation fault in menuconfig search
        kbuild: fix SIGPIPE error message for AR=gcc-ar and AR=llvm-ar
        kbuild: fix typo in modpost
        Documentation: kbuild: Add description of git for reproducible builds
        kbuild: use POSIX-compatible grep option
      35697d81
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 089d1c31
      Linus Torvalds authored
      Pull kvm fixes from Paolo Bonzini:
      "ARM:
      
         - Fix the pKVM stage-1 walker erronously using the stage-2 accessor
      
         - Correctly convert vcpu->kvm to a hyp pointer when generating an
           exception in a nVHE+MTE configuration
      
         - Check that KVM_CAP_DIRTY_LOG_* are valid before enabling them
      
         - Fix SMPRI_EL1/TPIDR2_EL0 trapping on VHE
      
         - Document the boot requirements for FGT when entering the kernel at
           EL1
      
        x86:
      
         - Use SRCU to protect zap in __kvm_set_or_clear_apicv_inhibit()
      
         - Make argument order consistent for kvcalloc()
      
         - Userspace API fixes for DEBUGCTL and LBRs"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
        KVM: x86: Fix a typo about the usage of kvcalloc()
        KVM: x86: Use SRCU to protect zap in __kvm_set_or_clear_apicv_inhibit()
        KVM: VMX: Ignore guest CPUID for host userspace writes to DEBUGCTL
        KVM: VMX: Fold vmx_supported_debugctl() into vcpu_supported_debugctl()
        KVM: VMX: Advertise PMU LBRs if and only if perf supports LBRs
        arm64: booting: Document our requirements for fine grained traps with SME
        KVM: arm64: Fix SMPRI_EL1/TPIDR2_EL0 trapping on VHE
        KVM: Check KVM_CAP_DIRTY_LOG_{RING, RING_ACQ_REL} prior to enabling them
        KVM: arm64: Fix bad dereference on MTE-enabled systems
        KVM: arm64: Use correct accessor to parse stage-1 PTEs
      089d1c31
    • Linus Torvalds's avatar
      Merge tag 'for-linus-6.1-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip · 6e8c78d3
      Linus Torvalds authored
      Pull xen fixes from Juergen Gross:
       "One fix for silencing a smatch warning, and a small cleanup patch"
      
      * tag 'for-linus-6.1-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
        x86/xen: simplify sysenter and syscall setup
        x86/xen: silence smatch warning in pmu_msr_chk_emulated()
      6e8c78d3
    • Linus Torvalds's avatar
      Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 · 9761070d
      Linus Torvalds authored
      Pull ext4 fixes from Ted Ts'o:
       "Fix a number of bugs, including some regressions, the most serious of
        which was one which would cause online resizes to fail with file
        systems with metadata checksums enabled.
      
        Also fix a warning caused by the newly added fortify string checker,
        plus some bugs that were found using fuzzed file systems"
      
      * tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
        ext4: fix fortify warning in fs/ext4/fast_commit.c:1551
        ext4: fix wrong return err in ext4_load_and_init_journal()
        ext4: fix warning in 'ext4_da_release_space'
        ext4: fix BUG_ON() when directory entry has invalid rec_len
        ext4: update the backup superblock's at the end of the online resize
      9761070d
    • Linus Torvalds's avatar
      Merge tag '6.1-rc4-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6 · 90153f92
      Linus Torvalds authored
      Pull cifs fixes from Steve French:
       "One symlink handling fix and two fixes foir multichannel issues with
        iterating channels, including for oplock breaks when leases are
        disabled"
      
      * tag '6.1-rc4-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
        cifs: fix use-after-free on the link name
        cifs: avoid unnecessary iteration of tcp sessions
        cifs: always iterate smb sessions using primary channel
      90153f92
    • Linus Torvalds's avatar
      Merge tag 'trace-v6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace · 8391aa4b
      Linus Torvalds authored
      Pull `lTracing fixes for 6.1-rc3:
      
       - Fixed NULL pointer dereference in the ring buffer wait-waiters code
         for machines that have less CPUs than what nr_cpu_ids returns.
      
         The buffer array is of size nr_cpu_ids, but only the online CPUs get
         initialized.
      
       - Fixed use after free call in ftrace_shutdown.
      
       - Fix accounting of if a kprobe is enabled
      
       - Fix NULL pointer dereference on error path of fprobe rethook_alloc().
      
       - Fix unregistering of fprobe_kprobe_handler
      
       - Fix memory leak in kprobe test module
      
      * tag 'trace-v6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
        tracing: kprobe: Fix memory leak in test_gen_kprobe/kretprobe_cmd()
        tracing/fprobe: Fix to check whether fprobe is registered correctly
        fprobe: Check rethook_alloc() return in rethook initialization
        kprobe: reverse kp->flags when arm_kprobe failed
        ftrace: Fix use-after-free for dynamic ftrace_ops
        ring-buffer: Check for NULL cpu_buffer in ring_buffer_wake_waiters()
      8391aa4b
    • Paolo Bonzini's avatar
      Merge tag 'kvmarm-fixes-6.1-3' of... · f4298cac
      Paolo Bonzini authored
      Merge tag 'kvmarm-fixes-6.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
      
      * Fix the pKVM stage-1 walker erronously using the stage-2 accessor
      
      * Correctly convert vcpu->kvm to a hyp pointer when generating
        an exception in a nVHE+MTE configuration
      
      * Check that KVM_CAP_DIRTY_LOG_* are valid before enabling them
      
      * Fix SMPRI_EL1/TPIDR2_EL0 trapping on VHE
      
      * Document the boot requirements for FGT when entering the kernel
        at EL1
      f4298cac
    • Paolo Bonzini's avatar
      Merge branch 'kvm-master' into HEAD · 14620149
      Paolo Bonzini authored
      x86:
      * Use SRCU to protect zap in __kvm_set_or_clear_apicv_inhibit()
      
      * Make argument order consistent for kvcalloc()
      
      * Userspace API fixes for DEBUGCTL and LBRs
      14620149