1. 07 Sep, 2022 1 commit
    • Pali Rohár's avatar
      gpio: mpc8xxx: Fix support for IRQ_TYPE_LEVEL_LOW flow_type in mpc85xx · 279c12df
      Pali Rohár authored
      Commit e39d5ef6 ("powerpc/5xxx: extend mpc8xxx_gpio driver to support
      mpc512x gpios") implemented support for IRQ_TYPE_LEVEL_LOW flow type in
      mpc512x via falling edge type. Do same for mpc85xx which support was added
      in commit 345e5c8a ("powerpc: Add interrupt support to mpc8xxx_gpio").
      
      Fixes probing of lm90 hwmon driver on mpc85xx based board which use level
      interrupt. Without it kernel prints error and refuse lm90 to work:
      
          [   15.258370] genirq: Setting trigger mode 8 for irq 49 failed (mpc8xxx_irq_set_type+0x0/0xf8)
          [   15.267168] lm90 0-004c: cannot request IRQ 49
          [   15.272708] lm90: probe of 0-004c failed with error -22
      
      Fixes: 345e5c8a ("powerpc: Add interrupt support to mpc8xxx_gpio")
      Signed-off-by: default avatarPali Rohár <pali@kernel.org>
      Signed-off-by: default avatarBartosz Golaszewski <brgl@bgdev.pl>
      279c12df
  2. 04 Sep, 2022 5 commits
    • Linus Torvalds's avatar
      Linux 6.0-rc4 · 7e18e42e
      Linus Torvalds authored
      7e18e42e
    • Linus Torvalds's avatar
      Merge tag 'powerpc-6.0-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · 59954972
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
      
       - Fix handling of PCI domains in /proc on 32-bit systems using the
         recently added support for numbering buses from zero for each domain.
      
       - A fix and a revert for some changes to use READ/WRITE_ONCE() which
         caused problems with KASAN enabled due to sanitisation calls being
         introduced in low-level paths that can't cope with it.
      
       - Fix build errors on 32-bit caused by the syscall table being
         misaligned sometimes.
      
       - Two fixes to get IBM Cell native machines booting again, which had
         bit-rotted while my QS22 was temporarily out of action.
      
       - Fix the papr_scm driver to not assume the order of events returned by
         the hypervisor is stable, and a related compile fix.
      
      Thanks to Aneesh Kumar K.V, Christophe Leroy, Jordan Niethe, Kajol Jain,
      Masahiro Yamada, Nathan Chancellor, Pali Rohár, Vaibhav Jain, and Zhouyi
      Zhou.
      
      * tag 'powerpc-6.0-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        powerpc/papr_scm: Ensure rc is always initialized in papr_scm_pmu_register()
        Revert "powerpc/irq: Don't open code irq_soft_mask helpers"
        powerpc: Fix hard_irq_disable() with sanitizer
        powerpc/rtas: Fix RTAS MSR[HV] handling for Cell
        Revert "powerpc: Remove unused FW_FEATURE_NATIVE references"
        powerpc: align syscall table for ppc32
        powerpc/pci: Enable PCI domains in /proc when PCI bus numbers are not unique
        powerpc/papr_scm: Fix nvdimm event mappings
      59954972
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 685ed983
      Linus Torvalds authored
      Pull kvm fixes from Paolo Bonzini:
       "s390:
      
         - PCI interpretation compile fixes
      
        RISC-V:
      
         - fix unused variable warnings in vcpu_timer.c
      
         - move extern sbi_ext declarations to a header
      
        x86:
      
         - check validity of argument to KVM_SET_MP_STATE
      
         - use guest's global_ctrl to completely disable guest PEBS
      
         - fix a memory leak on memory allocation failure
      
         - mask off unsupported and unknown bits of IA32_ARCH_CAPABILITIES
      
         - fix build failure with Clang integrated assembler
      
         - fix MSR interception
      
         - always flush TLBs when enabling dirty logging"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
        KVM: x86: check validity of argument to KVM_SET_MP_STATE
        perf/x86/core: Completely disable guest PEBS via guest's global_ctrl
        KVM: x86: fix memoryleak in kvm_arch_vcpu_create()
        KVM: x86: Mask off unsupported and unknown bits of IA32_ARCH_CAPABILITIES
        KVM: s390: pci: Hook to access KVM lowlevel from VFIO
        riscv: kvm: move extern sbi_ext declarations to a header
        riscv: kvm: vcpu_timer: fix unused variable warnings
        KVM: selftests: Fix ambiguous mov in KVM_ASM_SAFE()
        KVM: selftests: Fix KVM_EXCEPTION_MAGIC build with Clang
        KVM: VMX: Heed the 'msr' argument in msr_write_intercepted()
        kvm: x86: mmu: Always flush TLBs when enabling dirty logging
        kvm: x86: mmu: Drop the need_remote_flush() function
      685ed983
    • Nick Desaulniers's avatar
      Makefile.extrawarn: re-enable -Wformat for clang; take 2 · b0839b28
      Nick Desaulniers authored
      -Wformat was recently re-enabled for builds with clang, then quickly
      re-disabled, due to concerns stemming from the frequency of default
      argument promotion related warning instances.
      
      commit 258fafcd ("Makefile.extrawarn: re-enable -Wformat for clang")
      commit 21f9c8a1 ("Revert "Makefile.extrawarn: re-enable -Wformat for clang"")
      
      ISO WG14 has ratified N2562 to address default argument promotion
      explicitly for printf, as part of the upcoming ISO C2X standard.
      
      The behavior of clang was changed in clang-16 to not warn for the cited
      cases in all language modes.
      
      Add a version check, so that users of clang-16 now get the full effect
      of -Wformat. For older clang versions, re-enable flags under the
      -Wformat group that way users still get some useful checks related to
      format strings, without noisy default argument promotion warnings. I
      intentionally omitted -Wformat-y2k and -Wformat-security from being
      re-enabled, which are also part of -Wformat in clang-16.
      
      Link: https://github.com/ClangBuiltLinux/linux/issues/378
      Link: https://github.com/llvm/llvm-project/issues/57102
      Link: https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2562.pdfSuggested-by: default avatarJustin Stitt <jstitt007@gmail.com>
      Suggested-by: default avatarNathan Chancellor <nathan@kernel.org>
      Suggested-by: default avatarYoungmin Nam <youngmin.nam@samsung.com>
      Signed-off-by: default avatarNick Desaulniers <ndesaulniers@google.com>
      Reviewed-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
      Reviewed-by: default avatarNathan Chancellor <nathan@kernel.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      b0839b28
    • Linus Torvalds's avatar
      Merge tag 'gpio-fixes-for-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux · 7726d4c3
      Linus Torvalds authored
      Pull gpio fixes from Bartosz Golaszewski:
       "A a set of fixes from the GPIO subsystem.
      
        Most are small driver fixes except the realtek-otto driver patch which
        is pretty big but addresses a significant flaw that can cause the CPU
        to stay infinitely busy on uncleared ISR on some platforms.
      
        Summary:
         - MAINTAINERS update
         - fix resource leaks in gpio-mockup and gpio-pxa
         - add missing locking in gpio-pca953x
         - use 32-bit I/O in gpio-realtek-otto
         - make irq_chip structures immutable in four more drivers"
      
      * tag 'gpio-fixes-for-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
        gpio: ws16c48: Make irq_chip immutable
        gpio: 104-idio-16: Make irq_chip immutable
        gpio: 104-idi-48: Make irq_chip immutable
        gpio: 104-dio-48e: Make irq_chip immutable
        gpio: realtek-otto: switch to 32-bit I/O
        gpio: pca953x: Add mutex_lock for regcache sync in PM
        gpio: mockup: remove gpio debugfs when remove device
        gpio: pxa: use devres for the clock struct
        MAINTAINERS: rectify entry for XILINX GPIO DRIVER
      7726d4c3
  3. 03 Sep, 2022 19 commits
  4. 02 Sep, 2022 15 commits
    • Linus Torvalds's avatar
      Merge tag 'block-6.0-2022-09-02' of git://git.kernel.dk/linux-block · d895ec79
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
      
       - NVMe pull request via Christoph:
           - error handling fix for the new auth code (Hannes Reinecke)
           - fix unhandled tcp states in nvmet_tcp_state_change (Maurizio
             Lombardi)
           - add NVME_QUIRK_BOGUS_NID for Lexar NM610 (Shyamin Ayesh)
      
       - Add documentation for the ublk driver merged in this merge window
         (Ming)
      
      * tag 'block-6.0-2022-09-02' of git://git.kernel.dk/linux-block:
        Documentation: document ublk
        nvmet-tcp: fix unhandled tcp states in nvmet_tcp_state_change()
        nvmet-auth: add missing goto in nvmet_setup_auth()
        nvme-pci: add NVME_QUIRK_BOGUS_NID for Lexar NM610
      d895ec79
    • Linus Torvalds's avatar
      Merge tag 'io_uring-6.0-2022-09-02' of git://git.kernel.dk/linux-block · cec53f4c
      Linus Torvalds authored
      Pull io_uring fixes from Jens Axboe:
      
       - A single fix for over-eager retries for networking (Pavel)
      
       - Revert the notification slot support for zerocopy sends.
      
         It turns out that even after more than a year or development and
         testing, there's not full agreement on whether just using plain
         ordered notifications is Good Enough to avoid the complexity of using
         the notifications slots. Because of that, we decided that it's best
         left to a future final decision.
      
         We can always bring back this feature, but we can't really change it
         or remove it once we've released 6.0 with it enabled. The reverts
         leave the usual CQE notifications as the primary interface for
         knowing when data was sent, and when it was acked. (Pavel)
      
      * tag 'io_uring-6.0-2022-09-02' of git://git.kernel.dk/linux-block:
        selftests/net: return back io_uring zc send tests
        io_uring/net: simplify zerocopy send user API
        io_uring/notif: remove notif registration
        Revert "io_uring: rename IORING_OP_FILES_UPDATE"
        Revert "io_uring: add zc notification flush requests"
        selftests/net: temporarily disable io_uring zc test
        io_uring/net: fix overexcessive retries
      cec53f4c
    • Linus Torvalds's avatar
      Merge tag '6.0-rc3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6 · 1551f8f2
      Linus Torvalds authored
      Pull cifs fixes from Steve French:
       "Five fixes, all also marked for stable:
      
         - fixes for collapse range and insert range (also fixes xfstest
           generic/031)
      
         - memory leak fix"
      
      * tag '6.0-rc3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
        cifs: fix small mempool leak in SMB2_negotiate()
        smb3: use filemap_write_and_wait_range instead of filemap_write_and_wait
        smb3: fix temporary data corruption in insert range
        smb3: fix temporary data corruption in collapse range
        smb3: Move the flush out of smb2_copychunk_range() into its callers
      1551f8f2
    • Linus Torvalds's avatar
      Merge tag 'landlock-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux · 0c95f022
      Linus Torvalds authored
      Pull landlock fix from Mickaël Salaün:
       "This fixes a mis-handling of the LANDLOCK_ACCESS_FS_REFER right when
        multiple rulesets/domains are stacked.
      
        The expected behaviour was that an additional ruleset can only
        restrict the set of permitted operations, but in this particular case,
        it was potentially possible to re-gain the LANDLOCK_ACCESS_FS_REFER
        right"
      
      * tag 'landlock-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux:
        landlock: Fix file reparenting without explicit LANDLOCK_ACCESS_FS_REFER
      0c95f022
    • Linus Torvalds's avatar
      Merge tag 'mmc-v6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc · b307e704
      Linus Torvalds authored
      Pull MMC fixes from Ulf Hansson:
      
       - Fix workaround for SD UHS-I voltage switch
      
      * tag 'mmc-v6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
        mmc: core: Fix inconsistent sd3_bus_mode at UHS-I SD voltage switch failure
        mmc: core: Fix UHS-I SD 1.8V workaround branch
      b307e704
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-2022-09-02' of git://anongit.freedesktop.org/drm/drm · 1e8e515e
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "Regular fixes pull. One core dma-buf fix, then two weeks of i915
        fixes, a lot of amdgpu fixes mostly for new IP, and a bunch of msm
        fixes, mostly modesetting ones.
      
        Nothing seems too bad at this point.
      
        dma-buf/dma-resv:
         - Fence-handling fix
      
        i915:
         - GVT fixes including fix for a CommetLake regression in mmio table
           and misc doc and typo fixes
         - Fix CCS handling
         - Fix for guc requests after reset
         - Display DSI related fixes
         - Display backlight related fixes
         - Fix for a null pointer dereference
         - HDMI related quirk for ECS Liva Q2 with GLK graphics
         - Skip wm/ddb readout for disabled pipes
      
        amdgpu:
         - FRU error message fix
         - MES 11 updates
         - DCN 3.2.x fixes
         - DCN 3.1.4 fixes
         - Fix possible use after free in CS IOCTL
         - SMU 13.0.x fixes
         - Fix iolink reporting on devices with direct connections to CPU
         - GFX10 tap delay firmware fixes
      
        msm:
         - Fix for inconsistent indenting in msm_dsi_dphy_timing_calc_v3().
         - Fix to make eDP the first connector in the connected list.
         - Fix to populate intf_cfg correctly before calling reset_intf_cfg().
         - Specify the correct number of DSI regulators for SDM660.
         - Specify the correct number of DSI regulators for MSM8996.
         - Fix for removing DP_RECOVERED_CLOCK_OUT_EN bit for tps4 link training
         - Fix probe-deferral crash in gpu devfreq
         - Fix gpu debugfs deadlock"
      
      * tag 'drm-fixes-2022-09-02' of git://anongit.freedesktop.org/drm/drm: (51 commits)
        drm/amd/amdgpu: skip ucode loading if ucode_size == 0
        drm/amdgpu: only init tap_delay ucode when it's included in ucode binary
        drm/amd/display: Fix black flash when switching from ODM2to1 to ODMBypass
        drm/amd/display: Fix check for stream and plane
        drm/amd/display: Re-initialize viewport after pipe merge
        drm/amd/display: Use correct plane for CAB cursor size allocation
        drm/amdgpu: ensure no PCIe peer access for CPU XGMI iolinks
        drm/amd/pm: bump SMU 13.0.0 driver_if header version
        drm/amd/pm: use vbios carried pptable for all SMU13.0.7 SKUs
        drm/amd/pm: use vbios carried pptable for those supported SKUs
        drm/amd/display: fix wrong register access
        drm/amd/display: use actual cursor size instead of max for CAB allocation
        drm/amd/display: disable display fresh from MALL on an edge case for DCN321
        drm/amd/display: Fix CAB cursor size allocation for DCN32/321
        drm/amd/display: Missing HPO instance added
        drm/amd/display: set dig fifo read start level to 7 before dig fifo reset
        drm/amdgpu: Fix use-after-free in amdgpu_cs_ioctl
        drm/amd/display: Fix OTG H timing reset for dcn314
        drm/amd/display: Fix DCN32 DPSTREAMCLK_CNTL programming
        drm/amdgpu: Update mes_v11_api_def.h
        ...
      1e8e515e
    • Linus Torvalds's avatar
      Merge tag 'driver-core-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core · 0b3acd1c
      Linus Torvalds authored
      Pull driver core fixes from Greg KH:
       "Here are some small driver core fixes for some oft-reported problems
        in 6.0-rc1.  They include:
      
         - a bunch of reverts to handle driver_deferred_probe_check_state()
           problems that were part of the 6.0-rc1 merge.
      
         - firmware_loader bugfixes now that the code is being properly tested
           and used by others
      
         - arch_topology fix
      
         - deferred driver probe bugfix to solve a long-suffering amba bus
           problem that many people have reported.
      
        All of these have been in linux-next for a while with no reported
        problems"
      
      * tag 'driver-core-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
        firmware_loader: Fix memory leak in firmware upload
        firmware_loader: Fix use-after-free during unregister
        arch_topology: Silence early cacheinfo errors when non-existent
        driver core: Don't probe devices after bus_type.match() probe deferral
        Revert "iommu/of: Delete usage of driver_deferred_probe_check_state()"
        Revert "PM: domains: Delete usage of driver_deferred_probe_check_state()"
        Revert "net: mdio: Delete usage of driver_deferred_probe_check_state()"
        Revert "driver core: Delete driver_deferred_probe_check_state()"
      0b3acd1c
    • Linus Torvalds's avatar
      Merge tag 'char-misc-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc · ffb384c2
      Linus Torvalds authored
      Pull char/misc driver fixes from Greg KH:
       "Here are some small char/misc and other driver fixes for 6.0-rc4.
      
        Included in here are:
      
         - binder fixes for previous fixes, and a few more fixes uncovered by
           them.
      
         - iio driver fixes
      
         - soundwire driver fixes
      
         - fastrpc driver fixes for memory corruption on some hardware
      
         - peci driver fix
      
         - mhi driver fix
      
        All of these have been in linux-next with no reported problems"
      
      * tag 'char-misc-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
        binder: fix alloc->vma_vm_mm null-ptr dereference
        misc: fastrpc: increase maximum session count
        misc: fastrpc: fix memory corruption on open
        misc: fastrpc: fix memory corruption on probe
        soundwire: qcom: fix device status array range
        bus: mhi: host: Fix up null pointer access in mhi_irq_handler
        soundwire: qcom: remove duplicate reset control get
        iio: light: cm32181: make cm32181_pm_ops static
        iio: ad7292: Prevent regulator double disable
        dt-bindings: iio: gyroscope: bosch,bmg160: correct number of pins
        iio: adc: mcp3911: use correct formula for AD conversion
        iio: adc: mcp3911: correct "microchip,device-addr" property
        Revert "binder_alloc: Add missing mmap_lock calls when using the VMA"
        binder_alloc: Add missing mmap_lock calls when using the VMA
        binder: fix UAF of ref->proc caused by race condition
        iio: light: cm3605: Fix an error handling path in cm3605_probe()
        iio: adc: mcp3911: make use of the sign bit
        peci: cpu: Fix use-after-free in adev_release()
        peci: aspeed: fix error check return value of platform_get_irq()
      ffb384c2
    • Linus Torvalds's avatar
      Merge tag 'usb-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · fd59585c
      Linus Torvalds authored
      Pull USB/Thunderbolt driver fixes from Greg KH:
       "Here are a lot of small USB and Thunderbolt driver fixes for 6.0-rc4
        for reported problems. Included in here are:
      
         - new usb-serial driver ids
      
         - dwc3 driver bugfixes for reported problems with 6.0-rc1
      
         - new device quirks, and reverts of some quirks that were incorrect
      
         - gadget driver bugfixes for reported problems
      
         - USB host controller bugfixes (xhci and others)
      
         - other small USB fixes, details in the shortlog
      
         - small thunderbolt driver fixes
      
        All of these have been in linux-next with no reported issues"
      
      * tag 'usb-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (51 commits)
        Revert "usb: gadget: udc-xilinx: replace memcpy with memcpy_toio"
        usb: storage: Add ASUS <0x0b05:0x1932> to IGNORE_UAS
        USB: serial: ch341: fix disabled rx timer on older devices
        USB: serial: ch341: fix lost character on LCR updates
        USB: serial: cp210x: add Decagon UCA device id
        Revert "usb: add quirks for Lenovo OneLink+ Dock"
        usb: cdns3: fix issue with rearming ISO OUT endpoint
        usb: cdns3: fix incorrect handling TRB_SMM flag for ISOC transfer
        usb: gadget: mass_storage: Fix cdrom data transfers on MAC-OS
        media: mceusb: Use new usb_control_msg_*() routines
        USB: core: Prevent nested device-reset calls
        USB: gadget: Fix obscure lockdep violation for udc_mutex
        usb: dwc2: fix wrong order of phy_power_on and phy_init
        usb: gadget: udc-xilinx: replace memcpy with memcpy_toio
        usb: typec: Remove retimers properly
        usb: dwc3: disable USB core PHY management
        usb: add quirks for Lenovo OneLink+ Dock
        USB: serial: option: add support for Cinterion MV32-WA/WB RmNet mode
        USB: serial: ftdi_sio: add Omron CS1W-CIF31 device id
        USB: serial: option: add Quectel EM060K modem
        ...
      fd59585c
    • Linus Torvalds's avatar
      Merge tag 'platform-drivers-x86-v6.0-2' of... · 1a2f6a37
      Linus Torvalds authored
      Merge tag 'platform-drivers-x86-v6.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
      
      Pull x86 platform driver fixes from Hans de Goede:
       "Various small fixes and hardware-id additions"
      
      * tag 'platform-drivers-x86-v6.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
        platform/x86: p2sb: Fix UAF when caller uses resource name
        platform/x86: asus-wmi: Increase FAN_CURVE_BUF_LEN to 32
        platform/mellanox: Remove redundant 'NULL' check
        platform/mellanox: Remove unnecessary code
        platform/mellanox: mlxreg-lc: Fix locking issue
        platform/mellanox: mlxreg-lc: Fix coverity warning
        platform/x86: acer-wmi: Acer Aspire One AOD270/Packard Bell Dot keymap fixes
        platform/x86: thinkpad_acpi: Explicitly set to balanced mode on startup
        platform/x86: asus-wmi: Fix the name of the mic-mute LED classdev
        platform/surface: aggregator_registry: Add HID devices for sensors and UCSI client to SP8
        platform/surface: aggregator_registry: Rename HID device nodes based on new findings
        platform/surface: aggregator_registry: Rename HID device nodes based on their function
        platform/surface: aggregator_registry: Add support for Surface Laptop Go 2
        platform/x86: x86-android-tablets: Fix broken touchscreen on Chuwi Hi8 with Windows BIOS
        platform/x86: pmc_atom: Fix SLP_TYPx bitfield mask
      1a2f6a37
    • Linus Torvalds's avatar
      Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux · cf3488fa
      Linus Torvalds authored
      Pull arm64 fixes from Will Deacon:
       "It's a lot smaller than last week, with the star of the show being a
        couple of fixes to head.S addressing a boot regression introduced by
        the recent overhaul of that code in non-default configurations (i.e.
        KASLR disabled).
      
        The first of those two resolves the issue reported (and bisected) by
        Mikulus in the wait_on_bit() thread.
      
        Summary:
      
         - Fix two boot issues caused by the recent head.S rework when !KASLR
      
         - Fix calculation of crashkernel memory reservation
      
         - Fix bogus error check in PMU IRQ probing code"
      
      * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
        arm64: mm: Reserve enough pages for the initial ID map
        perf/arm_pmu_platform: fix tests for platform_get_irq() failure
        arm64: head: Ignore bogus KASLR displacement on non-relocatable kernels
        arm64/kexec: Fix missing extra range for crashkres_low.
      cf3488fa
    • Ming Lei's avatar
      Documentation: document ublk · 7a3d2225
      Ming Lei authored
      Add documentation for ublk subsystem. It was supposed to be documented when
      merging the driver, but missing at that time.
      
      Cc: Bagas Sanjaya <bagasdotme@gmail.com>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Richard W.M. Jones <rjones@redhat.com>
      Cc: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
      Reviewed-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
      Reviewed-by: default avatarZiyangZhang <ZiyangZhang@linux.alibaba.com>
      Signed-off-by: default avatarMing Lei <ming.lei@redhat.com>
      [axboe: correct MAINTAINERS addition]
      Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      7a3d2225
    • Mickaël Salaün's avatar
      landlock: Fix file reparenting without explicit LANDLOCK_ACCESS_FS_REFER · 55e55920
      Mickaël Salaün authored
      This change fixes a mis-handling of the LANDLOCK_ACCESS_FS_REFER right
      when multiple rulesets/domains are stacked. The expected behaviour was
      that an additional ruleset can only restrict the set of permitted
      operations, but in this particular case, it was potentially possible to
      re-gain the LANDLOCK_ACCESS_FS_REFER right.
      
      With the introduction of LANDLOCK_ACCESS_FS_REFER, we added the first
      globally denied-by-default access right.  Indeed, this lifted an initial
      Landlock limitation to rename and link files, which was initially always
      denied when the source or the destination were different directories.
      
      This led to an inconsistent backward compatibility behavior which was
      only taken into account if no domain layer were using the new
      LANDLOCK_ACCESS_FS_REFER right. However, when restricting a thread with
      a new ruleset handling LANDLOCK_ACCESS_FS_REFER, all inherited parent
      rulesets/layers not explicitly handling LANDLOCK_ACCESS_FS_REFER would
      behave as if they were handling this access right and with all their
      rules allowing it. This means that renaming and linking files could
      became allowed by these parent layers, but all the other required
      accesses must also be granted: all layers must allow file removal or
      creation, and renaming and linking operations cannot lead to privilege
      escalation according to the Landlock policy.  See detailed explanation
      in commit b91c3e4e ("landlock: Add support for file reparenting with
      LANDLOCK_ACCESS_FS_REFER").
      
      To say it another way, this bug may lift the renaming and linking
      limitations of the initial Landlock version, and a same ruleset can
      enforce different restrictions depending on previous or next enforced
      ruleset (i.e. inconsistent behavior). The LANDLOCK_ACCESS_FS_REFER right
      cannot give access to data not already allowed, but this doesn't follow
      the contract of the first Landlock ABI. This fix puts back the
      limitation for sandboxes that didn't opt-in for this additional right.
      
      For instance, if a first ruleset allows LANDLOCK_ACCESS_FS_MAKE_REG on
      /dst and LANDLOCK_ACCESS_FS_REMOVE_FILE on /src, renaming /src/file to
      /dst/file is denied. However, without this fix, stacking a new ruleset
      which allows LANDLOCK_ACCESS_FS_REFER on / would now permit the
      sandboxed thread to rename /src/file to /dst/file .
      
      This change fixes the (absolute) rule access rights, which now always
      forbid LANDLOCK_ACCESS_FS_REFER except when it is explicitly allowed
      when creating a rule.
      
      Making all domain handle LANDLOCK_ACCESS_FS_REFER was an initial
      approach but there is two downsides:
      * it makes the code more complex because we still want to check that a
        rule allowing LANDLOCK_ACCESS_FS_REFER is legitimate according to the
        ruleset's handled access rights (i.e. ABI v1 != ABI v2);
      * it would not allow to identify if the user created a ruleset
        explicitly handling LANDLOCK_ACCESS_FS_REFER or not, which will be an
        issue to audit Landlock.
      
      Instead, this change adds an ACCESS_INITIALLY_DENIED list of
      denied-by-default rights, which (only) contains
      LANDLOCK_ACCESS_FS_REFER.  All domains are treated as if they are also
      handling this list, but without modifying their fs_access_masks field.
      
      A side effect is that the errno code returned by rename(2) or link(2)
      *may* be changed from EXDEV to EACCES according to the enforced
      restrictions.  Indeed, we now have the mechanic to identify if an access
      is denied because of a required right (e.g. LANDLOCK_ACCESS_FS_MAKE_REG,
      LANDLOCK_ACCESS_FS_REMOVE_FILE) or if it is denied because of missing
      LANDLOCK_ACCESS_FS_REFER rights.  This may result in different errno
      codes than for the initial Landlock version, but this approach is more
      consistent and better for rename/link compatibility reasons, and it
      wasn't possible before (hence no backport to ABI v1).  The
      layout1.rename_file test reflects this change.
      
      Add 4 layout1.refer_denied_by_default* test suites to check that the
      behavior of a ruleset not handling LANDLOCK_ACCESS_FS_REFER (ABI v1) is
      unchanged even if another layer handles LANDLOCK_ACCESS_FS_REFER (i.e.
      ABI v1 precedence).  Make sure rule's absolute access rights are correct
      by testing with and without a matching path.  Add test_rename() and
      test_exchange() helpers.
      
      Extend layout1.inval tests to check that a denied-by-default access
      right is not necessarily part of a domain's handled access rights.
      
      Test coverage for security/landlock is 95.3% of 599 lines according to
      gcc/gcov-11.
      
      Fixes: b91c3e4e ("landlock: Add support for file reparenting with LANDLOCK_ACCESS_FS_REFER")
      Reviewed-by: default avatarPaul Moore <paul@paul-moore.com>
      Reviewed-by: default avatarGünther Noack <gnoack3000@gmail.com>
      Link: https://lore.kernel.org/r/20220831203840.1370732-1-mic@digikod.net
      Cc: stable@vger.kernel.org
      [mic: Constify and slightly simplify test helpers]
      Signed-off-by: default avatarMickaël Salaün <mic@digikod.net>
      55e55920
    • Dan Carpenter's avatar
      xen/grants: prevent integer overflow in gnttab_dma_alloc_pages() · e9ea0b30
      Dan Carpenter authored
      The change from kcalloc() to kvmalloc() means that arg->nr_pages
      might now be large enough that the "args->nr_pages << PAGE_SHIFT" can
      result in an integer overflow.
      
      Fixes: b3f7931f ("xen/gntdev: switch from kcalloc() to kvcalloc()")
      Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
      Reviewed-by: default avatarJuergen Gross <jgross@suse.com>
      Link: https://lore.kernel.org/r/YxDROJqu/RPvR0bi@kiliSigned-off-by: default avatarJuergen Gross <jgross@suse.com>
      e9ea0b30
    • SeongJae Park's avatar
      xen-blkfront: Cache feature_persistent value before advertisement · fe8f65b0
      SeongJae Park authored
      Xen blkfront advertises its support of the persistent grants feature
      when it first setting up and when resuming in 'talk_to_blkback()'.
      Then, blkback reads the advertised value when it connects with blkfront
      and decides if it will use the persistent grants feature or not, and
      advertises its decision to blkfront.  Blkfront reads the blkback's
      decision and it also makes the decision for the use of the feature.
      
      Commit 402c43ea ("xen-blkfront: Apply 'feature_persistent' parameter
      when connect"), however, made the blkfront's read of the parameter for
      disabling the advertisement, namely 'feature_persistent', to be done
      when it negotiate, not when advertise.  Therefore blkfront advertises
      without reading the parameter.  As the field for caching the parameter
      value is zero-initialized, it always advertises as the feature is
      disabled, so that the persistent grants feature becomes always disabled.
      
      This commit fixes the issue by making the blkfront does parmeter caching
      just before the advertisement.
      
      Fixes: 402c43ea ("xen-blkfront: Apply 'feature_persistent' parameter when connect")
      Cc: <stable@vger.kernel.org> # 5.10.x
      Reported-by: default avatarMarek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
      Signed-off-by: default avatarSeongJae Park <sj@kernel.org>
      Tested-by: default avatarMarek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
      Reviewed-by: default avatarJuergen Gross <jgross@suse.com>
      Link: https://lore.kernel.org/r/20220831165824.94815-4-sj@kernel.orgSigned-off-by: default avatarJuergen Gross <jgross@suse.com>
      fe8f65b0