1. 16 Nov, 2015 37 commits
  2. 30 Oct, 2015 3 commits
    • Alex Deucher's avatar
      drm/radeon: add pm sysfs files late · 6ce55eb9
      Alex Deucher authored
      commit 51a4726b upstream.
      
      They were added relatively early in the driver init process
      which meant that in some cases the driver was not finished
      initializing before external tools tried to use them which
      could result in a crash depending on the timing.
      Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      6ce55eb9
    • Shaohua Li's avatar
      workqueue: make sure delayed work run in local cpu · c7ca6b49
      Shaohua Li authored
      commit 874bbfe6 upstream.
      
      My system keeps crashing with below message. vmstat_update() schedules a delayed
      work in current cpu and expects the work runs in the cpu.
      schedule_delayed_work() is expected to make delayed work run in local cpu. The
      problem is timer can be migrated with NO_HZ. __queue_work() queues work in
      timer handler, which could run in a different cpu other than where the delayed
      work is scheduled. The end result is the delayed work runs in different cpu.
      The patch makes __queue_delayed_work records local cpu earlier. Where the timer
      runs doesn't change where the work runs with the change.
      
      [   28.010131] ------------[ cut here ]------------
      [   28.010609] kernel BUG at ../mm/vmstat.c:1392!
      [   28.011099] invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC KASAN
      [   28.011860] Modules linked in:
      [   28.012245] CPU: 0 PID: 289 Comm: kworker/0:3 Tainted: G        W4.3.0-rc3+ #634
      [   28.013065] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140709_153802- 04/01/2014
      [   28.014160] Workqueue: events vmstat_update
      [   28.014571] task: ffff880117682580 ti: ffff8800ba428000 task.ti: ffff8800ba428000
      [   28.015445] RIP: 0010:[<ffffffff8115f921>]  [<ffffffff8115f921>]vmstat_update+0x31/0x80
      [   28.016282] RSP: 0018:ffff8800ba42fd80  EFLAGS: 00010297
      [   28.016812] RAX: 0000000000000000 RBX: ffff88011a858dc0 RCX:0000000000000000
      [   28.017585] RDX: ffff880117682580 RSI: ffffffff81f14d8c RDI:ffffffff81f4df8d
      [   28.018366] RBP: ffff8800ba42fd90 R08: 0000000000000001 R09:0000000000000000
      [   28.019169] R10: 0000000000000000 R11: 0000000000000121 R12:ffff8800baa9f640
      [   28.019947] R13: ffff88011a81e340 R14: ffff88011a823700 R15:0000000000000000
      [   28.020071] FS:  0000000000000000(0000) GS:ffff88011a800000(0000)knlGS:0000000000000000
      [   28.020071] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
      [   28.020071] CR2: 00007ff6144b01d0 CR3: 00000000b8e93000 CR4:00000000000006f0
      [   28.020071] Stack:
      [   28.020071]  ffff88011a858dc0 ffff8800baa9f640 ffff8800ba42fe00ffffffff8106bd88
      [   28.020071]  ffffffff8106bd0b 0000000000000096 0000000000000000ffffffff82f9b1e8
      [   28.020071]  ffffffff829f0b10 0000000000000000 ffffffff81f18460ffff88011a81e340
      [   28.020071] Call Trace:
      [   28.020071]  [<ffffffff8106bd88>] process_one_work+0x1c8/0x540
      [   28.020071]  [<ffffffff8106bd0b>] ? process_one_work+0x14b/0x540
      [   28.020071]  [<ffffffff8106c214>] worker_thread+0x114/0x460
      [   28.020071]  [<ffffffff8106c100>] ? process_one_work+0x540/0x540
      [   28.020071]  [<ffffffff81071bf8>] kthread+0xf8/0x110
      [   28.020071]  [<ffffffff81071b00>] ?kthread_create_on_node+0x200/0x200
      [   28.020071]  [<ffffffff81a6522f>] ret_from_fork+0x3f/0x70
      [   28.020071]  [<ffffffff81071b00>] ?kthread_create_on_node+0x200/0x200
      Signed-off-by: default avatarShaohua Li <shli@fb.com>
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      c7ca6b49
    • Christoph Hellwig's avatar
      3w-9xxx: don't unmap bounce buffered commands · 9dca7991
      Christoph Hellwig authored
      commit 15e3d5a2 upstream.
      
      3w controller don't dma map small single SGL entry commands but instead
      bounce buffer them.  Add a helper to identify these commands and don't
      call scsi_dma_unmap for them.
      
      Based on an earlier patch from James Bottomley.
      
      Fixes: 118c85 ("3w-9xxx: fix command completion race")
      Reported-by: default avatarTóth Attila <atoth@atoth.sote.hu>
      Tested-by: default avatarTóth Attila <atoth@atoth.sote.hu>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Acked-by: default avatarAdam Radford <aradford@gmail.com>
      Signed-off-by: default avatarJames Bottomley <JBottomley@Odin.com>
      Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
      9dca7991