1. 24 9月, 2016 7 次提交
  2. 23 9月, 2016 3 次提交
    • A
      arm64: kgdb: handle read-only text / modules · 67787b68
      AKASHI Takahiro 提交于
      Handle read-only cases when CONFIG_DEBUG_RODATA (4.0) or
      CONFIG_DEBUG_SET_MODULE_RONX (3.18) are enabled by using
      aarch64_insn_write() instead of probe_kernel_write() as introduced by
      commit 2f896d58 ("arm64: use fixmap for text patching") in 4.0.
      
      Fixes: 11d91a77 ("arm64: Add CONFIG_DEBUG_SET_MODULE_RONX support")
      Signed-off-by: NAKASHI Takahiro <takahiro.akashi@linaro.org>
      Reviewed-by: NMark Rutland <mark.rutland@arm.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Cc: Jason Wessel <jason.wessel@windriver.com>
      Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
      67787b68
    • D
      arm64: Call numa_store_cpu_info() earlier. · c18df0ad
      David Daney 提交于
      The wq_numa_init() function makes a private CPU to node map by calling
      cpu_to_node() early in the boot process, before the non-boot CPUs are
      brought online.  Since the default implementation of cpu_to_node()
      returns zero for CPUs that have never been brought online, the
      workqueue system's view is that *all* CPUs are on node zero.
      
      When the unbound workqueue for a non-zero node is created, the
      tsk_cpus_allowed() for the worker threads is the empty set because
      there are, in the view of the workqueue system, no CPUs on non-zero
      nodes.  The code in try_to_wake_up() using this empty cpumask ends up
      using the cpumask empty set value of NR_CPUS as an index into the
      per-CPU area pointer array, and gets garbage as it is one past the end
      of the array.  This results in:
      
      [    0.881970] Unable to handle kernel paging request at virtual address fffffb1008b926a4
      [    1.970095] pgd = fffffc00094b0000
      [    1.973530] [fffffb1008b926a4] *pgd=0000000000000000, *pud=0000000000000000, *pmd=0000000000000000
      [    1.982610] Internal error: Oops: 96000004 [#1] SMP
      [    1.987541] Modules linked in:
      [    1.990631] CPU: 48 PID: 295 Comm: cpuhp/48 Tainted: G        W       4.8.0-rc6-preempt-vol+ #9
      [    1.999435] Hardware name: Cavium ThunderX CN88XX board (DT)
      [    2.005159] task: fffffe0fe89cc300 task.stack: fffffe0fe8b8c000
      [    2.011158] PC is at try_to_wake_up+0x194/0x34c
      [    2.015737] LR is at try_to_wake_up+0x150/0x34c
      [    2.020318] pc : [<fffffc00080e7468>] lr : [<fffffc00080e7424>] pstate: 600000c5
      [    2.027803] sp : fffffe0fe8b8fb10
      [    2.031149] x29: fffffe0fe8b8fb10 x28: 0000000000000000
      [    2.036522] x27: fffffc0008c63bc8 x26: 0000000000001000
      [    2.041896] x25: fffffc0008c63c80 x24: fffffc0008bfb200
      [    2.047270] x23: 00000000000000c0 x22: 0000000000000004
      [    2.052642] x21: fffffe0fe89d25bc x20: 0000000000001000
      [    2.058014] x19: fffffe0fe89d1d00 x18: 0000000000000000
      [    2.063386] x17: 0000000000000000 x16: 0000000000000000
      [    2.068760] x15: 0000000000000018 x14: 0000000000000000
      [    2.074133] x13: 0000000000000000 x12: 0000000000000000
      [    2.079505] x11: 0000000000000000 x10: 0000000000000000
      [    2.084879] x9 : 0000000000000000 x8 : 0000000000000000
      [    2.090251] x7 : 0000000000000040 x6 : 0000000000000000
      [    2.095621] x5 : ffffffffffffffff x4 : 0000000000000000
      [    2.100991] x3 : 0000000000000000 x2 : 0000000000000000
      [    2.106364] x1 : fffffc0008be4c24 x0 : ffffff0ffffada80
      [    2.111737]
      [    2.113236] Process cpuhp/48 (pid: 295, stack limit = 0xfffffe0fe8b8c020)
      [    2.120102] Stack: (0xfffffe0fe8b8fb10 to 0xfffffe0fe8b90000)
      [    2.125914] fb00:                                   fffffe0fe8b8fb80 fffffc00080e7648
      .
      .
      .
      [    2.442859] Call trace:
      [    2.445327] Exception stack(0xfffffe0fe8b8f940 to 0xfffffe0fe8b8fa70)
      [    2.451843] f940: fffffe0fe89d1d00 0000040000000000 fffffe0fe8b8fb10 fffffc00080e7468
      [    2.459767] f960: fffffe0fe8b8f980 fffffc00080e4958 ffffff0ff91ab200 fffffc00080e4b64
      [    2.467690] f980: fffffe0fe8b8f9d0 fffffc00080e515c fffffe0fe8b8fa80 0000000000000000
      [    2.475614] f9a0: fffffe0fe8b8f9d0 fffffc00080e58e4 fffffe0fe8b8fa80 0000000000000000
      [    2.483540] f9c0: fffffe0fe8d10000 0000000000000040 fffffe0fe8b8fa50 fffffc00080e5ac4
      [    2.491465] f9e0: ffffff0ffffada80 fffffc0008be4c24 0000000000000000 0000000000000000
      [    2.499387] fa00: 0000000000000000 ffffffffffffffff 0000000000000000 0000000000000040
      [    2.507309] fa20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
      [    2.515233] fa40: 0000000000000000 0000000000000000 0000000000000000 0000000000000018
      [    2.523156] fa60: 0000000000000000 0000000000000000
      [    2.528089] [<fffffc00080e7468>] try_to_wake_up+0x194/0x34c
      [    2.533723] [<fffffc00080e7648>] wake_up_process+0x28/0x34
      [    2.539275] [<fffffc00080d3764>] create_worker+0x110/0x19c
      [    2.544824] [<fffffc00080d69dc>] alloc_unbound_pwq+0x3cc/0x4b0
      [    2.550724] [<fffffc00080d6bcc>] wq_update_unbound_numa+0x10c/0x1e4
      [    2.557066] [<fffffc00080d7d78>] workqueue_online_cpu+0x220/0x28c
      [    2.563234] [<fffffc00080bd288>] cpuhp_invoke_callback+0x6c/0x168
      [    2.569398] [<fffffc00080bdf74>] cpuhp_up_callbacks+0x44/0xe4
      [    2.575210] [<fffffc00080be194>] cpuhp_thread_fun+0x13c/0x148
      [    2.581027] [<fffffc00080dfbac>] smpboot_thread_fn+0x19c/0x1a8
      [    2.586929] [<fffffc00080dbd64>] kthread+0xdc/0xf0
      [    2.591776] [<fffffc0008083380>] ret_from_fork+0x10/0x50
      [    2.597147] Code: b00057e1 91304021 91005021 b8626822 (b8606821)
      [    2.603464] ---[ end trace 58c0cd36b88802bc ]---
      [    2.608138] Kernel panic - not syncing: Fatal exception
      
      Fix by moving call to numa_store_cpu_info() for all CPUs into
      smp_prepare_cpus(), which happens before wq_numa_init().  Since
      smp_store_cpu_info() now contains only a single function call,
      simplify by removing the function and out-lining its contents.
      Suggested-by: NRobert Richter <rric@kernel.org>
      Fixes: 1a2db300 ("arm64, numa: Add NUMA support for arm64 platforms.")
      Cc: <stable@vger.kernel.org> # 4.7.x-
      Signed-off-by: NDavid Daney <david.daney@cavium.com>
      Reviewed-by: NRobert Richter <rrichter@cavium.com>
      Tested-by: NYisheng Xie <xieyisheng1@huawei.com>
      Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
      c18df0ad
    • L
      Merge tag 'media/v4.8-7' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media · b1f2beb8
      Linus Torvalds 提交于
      Pull media fixes from Mauro Carvalho Chehab:
      
       - several fixes for new drivers added for Kernel 4.8 addition (cec
         core, pulse8 cec driver and Mediatek vcodec)
      
       - a regression fix for cx23885 and saa7134 drivers
      
       - an important fix for rcar-fcp, making rcar_fcp_enable() return 0 on
         success
      
      * tag 'media/v4.8-7' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (25 commits)
        [media] cx23885/saa7134: assign q->dev to the PCI device
        [media] rcar-fcp: Make sure rcar_fcp_enable() returns 0 on success
        [media] cec: fix ioctl return code when not registered
        [media] cec: don't Feature Abort broadcast msgs when unregistered
        [media] vcodec:mediatek: Refine VP8 encoder driver
        [media] vcodec:mediatek: Refine H264 encoder driver
        [media] vcodec:mediatek: change H264 profile default to profile high
        [media] vcodec:mediatek: Add timestamp and timecode copy for V4L2 Encoder
        [media] vcodec:mediatek: Fix visible_height larger than coded_height issue in s_fmt_out
        [media] vcodec:mediatek: Fix fops_vcodec_release flow for V4L2 Encoder
        [media] vcodec:mediatek:code refine for v4l2 Encoder driver
        [media] cec-funcs.h: add missing vendor-specific messages
        [media] cec-edid: check for IEEE identifier
        [media] pulse8-cec: fix error handling
        [media] pulse8-cec: set correct Signal Free Time
        [media] mtk-vcodec: add HAS_DMA dependency
        [media] cec: ignore messages when log_addr_mask == 0
        [media] cec: add item to TODO
        [media] cec: set unclaimed addresses to CEC_LOG_ADDR_INVALID
        [media] cec: add CEC_LOG_ADDRS_FL_ALLOW_UNREG_FALLBACK flag
        ...
      b1f2beb8
  3. 22 9月, 2016 15 次提交
  4. 21 9月, 2016 15 次提交