1. 18 May, 2020 1 commit
    • Douglas Anderson's avatar
      arm64: Call debug_traps_init() from trap_init() to help early kgdb · b322c65f
      Douglas Anderson authored
      A new kgdb feature will soon land (kgdb_earlycon) that lets us run
      kgdb much earlier.  In order for everything to work properly it's
      important that the break hook is setup by the time we process
      "kgdbwait".
      
      Right now the break hook is setup in debug_traps_init() and that's
      called from arch_initcall().  That's a bit too late since
      kgdb_earlycon really needs things to be setup by the time the system
      calls dbg_late_init().
      
      We could fix this by adding call_break_hook() into early_brk64() and
      that works fine.  However, it's a little ugly.  Instead, let's just
      add a call to debug_traps_init() straight from trap_init().  There's
      already a documented dependency between trap_init() and
      debug_traps_init() and this makes the dependency more obvious rather
      than just relying on a comment.
      
      NOTE: this solution isn't early enough to let us select the
      "ARCH_HAS_EARLY_DEBUG" KConfig option that is introduced by the
      kgdb_earlycon patch series.  That would only be set if we could do
      breakpoints when early params are parsed.  This patch only enables
      "late early" breakpoints, AKA breakpoints when dbg_late_init() is
      called.  It's expected that this should be fine for most people.
      
      It should also be noted that if you crash you can still end up in kgdb
      earlier than debug_traps_init().  Since you don't need breakpoints to
      debug a crash that's fine.
      Suggested-by: default avatarWill Deacon <will@kernel.org>
      Signed-off-by: default avatarDouglas Anderson <dianders@chromium.org>
      Acked-by: default avatarWill Deacon <will@kernel.org>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Will Deacon <will@kernel.org>
      Link: https://lore.kernel.org/r/20200513160501.1.I0b5edf030cc6ebef6ab4829f8867cdaea42485d8@changeidSigned-off-by: default avatarWill Deacon <will@kernel.org>
      b322c65f
  2. 05 May, 2020 1 commit
    • Daniel Thompson's avatar
      arm64: cacheflush: Fix KGDB trap detection · ab8ad279
      Daniel Thompson authored
      flush_icache_range() contains a bodge to avoid issuing IPIs when the kgdb
      trap handler is running because issuing IPIs is unsafe (and not needed)
      in this execution context. However the current test, based on
      kgdb_connected is flawed: it both over-matches and under-matches.
      
      The over match occurs because kgdb_connected is set when gdb attaches
      to the stub and remains set during normal running. This is relatively
      harmelss because in almost all cases irq_disabled() will be false.
      
      The under match is more serious. When kdb is used instead of kgdb to access
      the debugger then kgdb_connected is not set in all the places that the
      debug core updates sw breakpoints (and hence flushes the icache). This
      can lead to deadlock.
      
      Fix by replacing the ad-hoc check with the proper kgdb macro. This also
      allows us to drop the #ifdef wrapper.
      
      Fixes: 3b8c9f1c ("arm64: IPI each CPU after invalidating the I-cache for kernel mappings")
      Signed-off-by: default avatarDaniel Thompson <daniel.thompson@linaro.org>
      Reviewed-by: default avatarDouglas Anderson <dianders@chromium.org>
      Link: https://lore.kernel.org/r/20200504170518.2959478-1-daniel.thompson@linaro.orgSigned-off-by: default avatarWill Deacon <will@kernel.org>
      ab8ad279
  3. 04 May, 2020 1 commit
  4. 30 Apr, 2020 2 commits
  5. 29 Apr, 2020 1 commit
  6. 28 Apr, 2020 12 commits
  7. 26 Apr, 2020 11 commits
    • Linus Torvalds's avatar
      Linux 5.7-rc3 · 6a8b55ed
      Linus Torvalds authored
      6a8b55ed
    • Linus Torvalds's avatar
      Merge tag '5.7-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6 · d4fb4bfb
      Linus Torvalds authored
      Pull cifs fixes from Steve French:
       "Five cifs/smb3 fixes:two for DFS reconnect failover, one lease fix for
        stable and the others to fix a missing spinlock during reconnect"
      
      * tag '5.7-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
        cifs: fix uninitialised lease_key in open_shroot()
        cifs: ensure correct super block for DFS reconnect
        cifs: do not share tcons with DFS
        cifs: minor update to comments around the cifs_tcp_ses_lock mutex
        cifs: protect updating server->dstaddr with a spinlock
      d4fb4bfb
    • Linus Torvalds's avatar
      Merge tag 'usb-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · e9a61afb
      Linus Torvalds authored
      Pull USB fixes from Greg KH:
       "Here are a number of USB driver fixes for 5.7-rc3.
      
        Nothing huge, just the usual collection of:
      
         - xhci fixes
      
         - gadget driver fixes
      
         - syzkaller fuzzing fixes
      
         - new device ids and DT bindings
      
         - new quirks added for broken devices
      
        A few of the gadget driver fixes show up twice here as they were
        applied to my branch, and also by Felipe to his branch which I then
        pulled in as we got out of sync a bit.
      
        All of these have been in linux-next with no reported issues"
      
      * tag 'usb-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (33 commits)
        USB: sisusbvga: Change port variable from signed to unsigned
        usb-storage: Add unusual_devs entry for JMicron JMS566
        USB: hub: Revert commit bd0e6c96 ("usb: hub: try old enumeration scheme first for high speed devices")
        USB: hub: Fix handling of connect changes during sleep
        usb: typec: altmode: Fix typec_altmode_get_partner sometimes returning an invalid pointer
        xhci: Don't clear hub TT buffer on ep0 protocol stall
        xhci: prevent bus suspend if a roothub port detected a over-current condition
        xhci: Fix handling halted endpoint even if endpoint ring appears empty
        usb: raw-gadget: Fix copy_to/from_user() checks
        usb: raw-gadget: fix raw_event_queue_fetch locking
        usb: gadget: udc: atmel: Fix vbus disconnect handling
        usb: dwc3: gadget: Fix request completion check
        USB: Add USB_QUIRK_DELAY_CTRL_MSG and USB_QUIRK_DELAY_INIT for Corsair K70 RGB RAPIDFIRE
        phy: tegra: Select USB_COMMON for usb_get_maximum_speed()
        usb: typec: tcpm: Ignore CC and vbus changes in PORT_RESET change
        usb: f_fs: Clear OS Extended descriptor counts to zero in ffs_data_reset()
        cdc-acm: introduce a cool down
        cdc-acm: close race betrween suspend() and acm_softint
        UAS: fix deadlock in error handling and PM flushing work
        UAS: no use logging any details in case of ENODEV
        ...
      e9a61afb
    • Linus Torvalds's avatar
      Merge tag 'tty-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty · c5f33785
      Linus Torvalds authored
      Pull tty/serial fixes from Greg KH:
       "Here are some tty and serial driver fixes for 5.7-rc3.
      
        The "largest" in here are a number of reverts for previous changes to
        the uartps serial driver that turned out to not be a good idea at all.
      
        The others are just small fixes found by people and tools. Included in
        here is a much-reported symbol export needed by previous changes that
        happened in 5.7-rc1. All of these have been in linux-next for a while
        with no reported issues"
      
      * tag 'tty-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
        tty: hvc: fix buffer overflow during hvc_alloc().
        tty: rocket, avoid OOB access
        tty: serial: bcm63xx: fix missing clk_put() in bcm63xx_uart
        vt: don't hardcode the mem allocation upper bound
        tty: serial: owl: add "much needed" clk_prepare_enable()
        vt: don't use kmalloc() for the unicode screen buffer
        tty/sysrq: Export sysrq_mask(), sysrq_toggle_support()
        serial: sh-sci: Make sure status register SCxSR is read in correct sequence
        serial: sunhv: Initialize lock for non-registered console
        Revert "serial: uartps: Register own uart console and driver structures"
        Revert "serial: uartps: Move Port ID to device data structure"
        Revert "serial: uartps: Change uart ID port allocation"
        Revert "serial: uartps: Do not allow use aliases >= MAX_UART_INSTANCES"
        Revert "serial: uartps: Fix error path when alloc failed"
        Revert "serial: uartps: Use the same dynamic major number for all ports"
        Revert "serial: uartps: Fix uartps_major handling"
      c5f33785
    • Linus Torvalds's avatar
      Merge tag 'char-misc-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc · f6da8bd1
      Linus Torvalds authored
      Pull char/misc driver fixes from Greg KH:
       "Here are 4 small misc driver fixes for 5.7-rc3:
      
         - mei driver fix
      
         - interconnect driver fix
      
         - two fpga driver fixes
      
        All have been in linux-next with no reported issues"
      
      * tag 'char-misc-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
        interconnect: qcom: Fix uninitialized tcs_cmd::wait
        mei: me: fix irq number stored in hw struct
        fpga: dfl: pci: fix return value of cci_pci_sriov_configure
        fpga: zynq: Remove clk_get error message for probe defer
      f6da8bd1
    • Linus Torvalds's avatar
      Merge tag 'staging-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging · edf17b28
      Linus Torvalds authored
      Pull staging/IIO driver fixes from Greg KH:
       "Here are some small staging and IIO driver fixes for 5.7-rc3
      
        Lots of tiny things for reported issues in staging and IIO drivers,
        including a counter driver fix as well (the iio drivers seem to be
        tied to those). Full details of the fixes are in the shortlog.
      
        All of these have been in linux-next for a while with no reported
        issues"
      
      * tag 'staging-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (27 commits)
        staging: vt6656: Fix calling conditions of vnt_set_bss_mode
        staging: comedi: Fix comedi_device refcnt leak in comedi_open
        staging: vt6656: Fix pairwise key entry save.
        staging: vt6656: Fix drivers TBTT timing counter.
        staging: vt6656: Don't set RCR_MULTICAST or RCR_BROADCAST by default.
        MAINTAINERS: remove Stefan Popa's email
        iio: adc: ad7192: fix null pointer de-reference crash during probe
        iio: core: remove extra semi-colon from devm_iio_device_register() macro
        iio: adc: ti-ads8344: properly byte swap value
        iio: imu: inv_mpu6050: fix suspend/resume with runtime power
        iio: st_sensors: rely on odr mask to know if odr can be set
        iio: xilinx-xadc: Make sure not exceed maximum samplerate
        iio: xilinx-xadc: Fix sequencer configuration for aux channels in simultaneous mode
        iio: xilinx-xadc: Fix clearing interrupt when enabling trigger
        iio: xilinx-xadc: Fix ADC-B powerdown
        iio: dac: ad5770r: fix off-by-one check on maximum number of channels
        iio: imu: st_lsm6dsx: flush hw FIFO before resetting the device
        iio: core: Fix handling of 'dB'
        dt-bindings: iio: adc: stm32-adc: fix id relative path
        counter: 104-quad-8: Add lock guards - generic interface
        ...
      edf17b28
    • Linus Torvalds's avatar
      Merge tag 'driver-core-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core · a8a0e2a9
      Linus Torvalds authored
      Pull driver core fixes from Greg KH:
       "Here are some small firmware/driver core/debugfs fixes for 5.7-rc3.
      
        The debugfs change is now possible as now the last users of
        debugfs_create_u32() have been fixed up in the different trees that
        got merged into 5.7-rc1, and I don't want it creeping back in.
      
        The firmware changes did cause a regression in linux-next, so the
        final patch here reverts part of that, re-exporting the symbol to
        resolve that issue. All of these patches, with the exception of the
        final one, have been in linux-next with only that one reported issue"
      
      * tag 'driver-core-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
        firmware_loader: revert removal of the fw_fallback_config export
        debugfs: remove return value of debugfs_create_u32()
        firmware_loader: remove unused exports
        firmware: imx: fix compile-testing
      a8a0e2a9
    • Linus Torvalds's avatar
      Merge tag 's390-5.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · 749f0461
      Linus Torvalds authored
      Pull s390 fixes from Vasily Gorbik:
      
       - Add a few notrace annotations to avoid potential crashes when
         switching ftrace tracers.
      
       - Avoid setting affinity for floating irqs in pci code.
      
       - Fix build issue found by kbuild test robot.
      
      * tag 's390-5.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
        s390/protvirt: fix compilation issue
        s390/pci: do not set affinity for floating irqs
        s390/ftrace: fix potential crashes when switching tracers
      749f0461
    • Linus Torvalds's avatar
      Merge tag 'powerpc-5.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · 670bcd79
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
      
       - One important fix for a bug in the way we find the cache-line size
         from the device tree, which was leading to the wrong size being
         reported to userspace on some platforms.
      
       - A fix for 8xx STRICT_KERNEL_RWX which was leaving TLB entries around
         leading to a window at boot when the strict mapping wasn't enforced.
      
       - A fix to enable our KUAP (kernel user access prevention) debugging on
         PPC32.
      
       - A build fix for clang in lib/mpi.
      
      Thanks to: Chris Packham, Christophe Leroy, Nathan Chancellor, Qian Cai.
      
      * tag 'powerpc-5.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        lib/mpi: Fix building for powerpc with clang
        powerpc/mm: Fix CONFIG_PPC_KUAP_DEBUG on PPC32
        powerpc/8xx: Fix STRICT_KERNEL_RWX startup test failure
        powerpc/setup_64: Set cache-line-size based on cache-block-size
      670bcd79
    • Linus Torvalds's avatar
      Merge tag 'devicetree-fixes-for-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux · 58792882
      Linus Torvalds authored
      Pull more Devicetree fixes from Rob Herring:
       "A couple of schema and kbuild fixes"
      
      * tag 'devicetree-fixes-for-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
        dt-bindings: phy: qcom-qusb2: Fix defaults
        dt-bindings: Fix erroneous 'additionalProperties'
        dt-bindings: Fix command line length limit calling dt-mk-schema
        dt-bindings: Re-enable core schemas for dtbs_check
      58792882
    • Luis Chamberlain's avatar
      firmware_loader: revert removal of the fw_fallback_config export · 5a357703
      Luis Chamberlain authored
      Christoph's patch removed two unsused exported symbols, however, one
      symbol is used by the firmware_loader itself.  If CONFIG_FW_LOADER=m so
      the firmware_loader is modular but CONFIG_FW_LOADER_USER_HELPER=y we fail
      the build at mostpost.
      
      ERROR: modpost: "fw_fallback_config" [drivers/base/firmware_loader/firmware_class.ko] undefined!
      
      This happens because the variable fw_fallback_config is built into the
      kernel if CONFIG_FW_LOADER_USER_HELPER=y always, so we need to grant
      access to the firmware loader module by exporting it.
      
      Revert only one hunk from his patch.
      
      Fixes: 73960473 ("firmware_loader: remove unused exports")
      Reported-by: default avatarRandy Dunlap <rdunlap@infradead.org>
      Signed-off-by: default avatarLuis Chamberlain <mcgrof@kernel.org>
      Link: https://lore.kernel.org/r/20200424184916.22843-1-mcgrof@kernel.orgSigned-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      5a357703
  8. 25 Apr, 2020 11 commits