Attachment 951411 Details for Bug 1155825 – log from deadlock

log from deadlock

deadlock.log (text/plain), 21.83 KB, created by Thomas Hellström on 2014-10-28 14:48:57 UTC

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Creator: Thomas Hellström

Created: 2014-10-28 14:48:57 UTC

Size: 21.83 KB

patch

obsolete

>[   21.762282] 
>[   21.763262] ======================================================
>[   21.766527] [ INFO: possible circular locking dependency detected ]
>[   21.770135] 3.18.0-rc2 #1 Not tainted
>[   21.772022] -------------------------------------------------------
>[   21.775999] Xorg/1276 is trying to acquire lock:
>[   21.778451]  (&dev->mode_config.mutex){+.+.+.}, at: [<ffffffffa01b76a4>] __drm_modeset_lock_all+0x114/0x120 [drm]
>[   21.784823] 
>[   21.784823] but task is already holding lock:
>[   21.787918]  (crtc_ww_class_acquire){+.+.+.}, at: [<ffffffffa01b7721>] drm_modeset_lock_crtc+0x41/0xb0 [drm]
>[   21.794907] 
>[   21.794907] which lock already depends on the new lock.
>[   21.794907] 
>[   21.800317] 
>[   21.800317] the existing dependency chain (in reverse order) is:
>[   21.805858] 
>-> #1 (crtc_ww_class_acquire){+.+.+.}:
>[   21.809739]        [<ffffffff810c1b4b>] lock_acquire+0xbb/0x150
>[   21.814232]        [<ffffffffa01b6eed>] drm_modeset_acquire_init+0xed/0x160 [drm]
>[   21.819195]        [<ffffffffa01b75ed>] __drm_modeset_lock_all+0x5d/0x120 [drm]
>[   21.824668]        [<ffffffffa01b76c0>] drm_modeset_lock_all+0x10/0x30 [drm]
>[   21.829412]        [<ffffffffa01aab00>] drm_mode_config_init+0x160/0x240 [drm]
>[   21.833914]        [<ffffffffa029d54e>] vmw_kms_init+0x1e/0x70 [vmwgfx]
>[   21.837358]        [<ffffffffa029f651>] vmw_driver_load+0x811/0xd60 [vmwgfx]
>[   21.841339]        [<ffffffffa01a1705>] drm_dev_register+0xb5/0x110 [drm]
>[   21.845215]        [<ffffffffa01a476f>] drm_get_pci_dev+0x8f/0x200 [drm]
>[   21.848578]        [<ffffffffa029e515>] vmw_probe+0x15/0x20 [vmwgfx]
>[   21.852269]        [<ffffffff813ed125>] local_pci_probe+0x45/0xa0
>[   21.856108]        [<ffffffff813ee509>] pci_device_probe+0xd9/0x130
>[   21.859814]        [<ffffffff814e14fd>] driver_probe_device+0x12d/0x3e0
>[   21.863171]        [<ffffffff814e1893>] __driver_attach+0xa3/0xb0
>[   21.867164]        [<ffffffff814df2fb>] bus_for_each_dev+0x6b/0xb0
>[   21.870400]        [<ffffffff814e0ebe>] driver_attach+0x1e/0x20
>[   21.873581]        [<ffffffff814e0a98>] bus_add_driver+0x188/0x260
>[   21.877332]        [<ffffffff814e2124>] driver_register+0x64/0xf0
>[   21.880738]        [<ffffffff813eca64>] __pci_register_driver+0x64/0x70
>[   21.884828]        [<ffffffffa01a49da>] drm_pci_init+0xfa/0x130 [drm]
>[   21.888059]        [<ffffffffa02c6019>] 0xffffffffa02c6019
>[   21.891184]        [<ffffffff8100212c>] do_one_initcall+0xbc/0x200
>[   21.895094]        [<ffffffff81100e25>] load_module+0x1db5/0x2840
>[   21.898257]        [<ffffffff81101977>] SyS_init_module+0xc7/0x110
>[   21.902994]        [<ffffffff8178357d>] tracesys_phase2+0xd8/0xdd
>[   21.906840] 
>-> #0 (&dev->mode_config.mutex){+.+.+.}:
>[   21.911989]        [<ffffffff810c10ad>] __lock_acquire+0x187d/0x1b80
>[   21.921687]        [<ffffffff810c1b4b>] lock_acquire+0xbb/0x150
>[   21.930909]        [<ffffffff8177ecd7>] mutex_lock_nested+0x67/0x4d0
>[   21.940501]        [<ffffffffa01b76a4>] __drm_modeset_lock_all+0x114/0x120 [drm]
>[   21.951150]        [<ffffffffa01b76c0>] drm_modeset_lock_all+0x10/0x30 [drm]
>[   21.962468]        [<ffffffffa029ca0b>] vmw_du_crtc_cursor_move+0x5b/0xc0 [vmwgfx]
>[   21.973816]        [<ffffffffa01a8f23>] drm_mode_cursor_common+0x263/0x360 [drm]
>[   21.985099]        [<ffffffffa01ac801>] drm_mode_cursor_ioctl+0x41/0x50 [drm]
>[   21.995810]        [<ffffffffa019dc26>] drm_ioctl+0x1a6/0x640 [drm]
>[   22.005252]        [<ffffffffa029e699>] vmw_generic_ioctl+0x179/0x280 [vmwgfx]
>[   22.016457]        [<ffffffffa029e7d5>] vmw_unlocked_ioctl+0x15/0x20 [vmwgfx]
>[   22.027520]        [<ffffffff81208a90>] do_vfs_ioctl+0x300/0x520
>[   22.036665]        [<ffffffff81208d31>] SyS_ioctl+0x81/0xa0
>[   22.045607]        [<ffffffff8178357d>] tracesys_phase2+0xd8/0xdd
>[   22.055112] 
>[   22.055112] other info that might help us debug this:
>[   22.055112] 
>[   22.066878]  Possible unsafe locking scenario:
>[   22.066878] 
>[   22.075944]        CPU0                    CPU1
>[   22.083102]        ----                    ----
>[   22.089403]   lock(crtc_ww_class_acquire);
>[   22.096490]                                lock(&dev->mode_config.mutex);
>[   22.107427]                                lock(crtc_ww_class_acquire);
>[   22.117381]   lock(&dev->mode_config.mutex);
>[   22.124686] 
>[   22.124686]  *** DEADLOCK ***
>[   22.124686] 
>[   22.133774] 1 lock held by Xorg/1276:
>[   22.139215]  #0:  (crtc_ww_class_acquire){+.+.+.}, at: [<ffffffffa01b7721>] drm_modeset_lock_crtc+0x41/0xb0 [drm]
>[   22.154833] 
>[   22.154833] stack backtrace:
>[   22.161838] CPU: 0 PID: 1276 Comm: Xorg Not tainted 3.18.0-rc2 #1
>[   22.171086] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 10/01/2014
>[   22.187270]  ffffffff82688100 ffff880067a079b8 ffffffff817790b4 0000000000000000
>[   22.198960]  ffffffff82688100 ffff880067a07a08 ffffffff817747e9 ffff880077dbccf0
>[   22.210798]  ffff880067a07a68 0000000000000000 ffff880077dbccf0 0000000000000000
>[   22.223472] Call Trace:
>[   22.227289]  [<ffffffff817790b4>] dump_stack+0x4e/0x68
>[   22.234944]  [<ffffffff817747e9>] print_circular_bug+0x1fb/0x20c
>[   22.243914]  [<ffffffff810c10ad>] __lock_acquire+0x187d/0x1b80
>[   22.252939]  [<ffffffff810c1b4b>] lock_acquire+0xbb/0x150
>[   22.260886]  [<ffffffffa01b76a4>] ? __drm_modeset_lock_all+0x114/0x120 [drm]
>[   22.271721]  [<ffffffff8177ecd7>] mutex_lock_nested+0x67/0x4d0
>[   22.280782]  [<ffffffffa01b76a4>] ? __drm_modeset_lock_all+0x114/0x120 [drm]
>[   22.290918]  [<ffffffff811d743b>] ? kmem_cache_alloc_trace+0x18b/0x190
>[   22.301517]  [<ffffffffa01b768e>] ? __drm_modeset_lock_all+0xfe/0x120 [drm]
>[   22.311466]  [<ffffffffa01b76a4>] __drm_modeset_lock_all+0x114/0x120 [drm]
>[   22.322208]  [<ffffffffa01b76c0>] drm_modeset_lock_all+0x10/0x30 [drm]
>[   22.331975]  [<ffffffffa029ca0b>] vmw_du_crtc_cursor_move+0x5b/0xc0 [vmwgfx]
>[   22.342740]  [<ffffffffa01a8f23>] drm_mode_cursor_common+0x263/0x360 [drm]
>[   22.352491]  [<ffffffff810c1c80>] ? lock_release_non_nested+0xa0/0x300
>[   22.362960]  [<ffffffff811a940f>] ? might_fault+0x5f/0xb0
>[   22.370821]  [<ffffffffa01ac801>] drm_mode_cursor_ioctl+0x41/0x50 [drm]
>[   22.380566]  [<ffffffffa019dc26>] drm_ioctl+0x1a6/0x640 [drm]
>[   22.389520]  [<ffffffff810bb775>] ? cpuacct_account_field+0x5/0xc0
>[   22.398855]  [<ffffffffa019da80>] ? drm_getmap+0xf0/0xf0 [drm]
>[   22.407839]  [<ffffffffa029e699>] vmw_generic_ioctl+0x179/0x280 [vmwgfx]
>[   22.417570]  [<ffffffffa029e7d5>] vmw_unlocked_ioctl+0x15/0x20 [vmwgfx]
>[   22.428119]  [<ffffffff81208a90>] do_vfs_ioctl+0x300/0x520
>[   22.436011]  [<ffffffff810bf37d>] ? trace_hardirqs_on_caller+0xfd/0x1c0
>[   22.445708]  [<ffffffff810bf44d>] ? trace_hardirqs_on+0xd/0x10
>[   22.454703]  [<ffffffff810247f7>] ? syscall_trace_enter_phase2+0xa7/0x200
>[   22.465424]  [<ffffffff81208d31>] SyS_ioctl+0x81/0xa0
>[   22.472971]  [<ffffffff8178357d>] tracesys_phase2+0xd8/0xdd
>[   25.163233] audit_printk_skb: 162 callbacks suppressed
>[   25.165337] audit: type=1400 audit(1414489507.231:66): apparmor="DENIED" operation="capable" profile="/usr/sbin/cupsd" pid=1687 comm="serial" capability=21  capname="sys_admin"
>[  240.522840] INFO: task Xorg:1276 blocked for more than 120 seconds.
>[  240.528260]       Not tainted 3.18.0-rc2 #1
>[  240.530078] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
>[  240.533546] Xorg            D ffff880037662220     0  1276   1228 0x00400004
>[  240.536307]  ffff880067a07b18 0000000000000002 ffff880077dbc440 ffff880067a07fd8
>[  240.539312]  0000000000015200 0000000000015200 ffff880037662220 ffff880077dbc440
>[  240.542251]  0000000000000000 ffff88007b1d7080 ffff8800684cb020 ffff8800684cb028
>[  240.545262] Call Trace:
>[  240.546240]  [<ffffffff8177cb11>] schedule_preempt_disabled+0x31/0x80
>[  240.548547]  [<ffffffff8177f855>] __ww_mutex_lock+0x195/0x870
>[  240.550798]  [<ffffffffa01b7431>] ? drm_modeset_lock+0x41/0x130 [drm]
>[  240.553107]  [<ffffffffa01b7431>] ? drm_modeset_lock+0x41/0x130 [drm]
>[  240.555464]  [<ffffffffa01b7431>] drm_modeset_lock+0x41/0x130 [drm]
>[  240.557748]  [<ffffffffa01b6eed>] ? drm_modeset_acquire_init+0xed/0x160 [drm]
>[  240.560288]  [<ffffffffa01b7721>] ? drm_modeset_lock_crtc+0x41/0xb0 [drm]
>[  240.562772]  [<ffffffffa01b7742>] drm_modeset_lock_crtc+0x62/0xb0 [drm]
>[  240.565139]  [<ffffffffa01a8d30>] drm_mode_cursor_common+0x70/0x360 [drm]
>[  240.567623]  [<ffffffff811a940f>] ? might_fault+0x5f/0xb0
>[  240.569596]  [<ffffffffa01ac801>] drm_mode_cursor_ioctl+0x41/0x50 [drm]
>[  240.571974]  [<ffffffffa019dc26>] drm_ioctl+0x1a6/0x640 [drm]
>[  240.574093]  [<ffffffff810bb775>] ? cpuacct_account_field+0x5/0xc0
>[  240.576315]  [<ffffffffa019da80>] ? drm_getmap+0xf0/0xf0 [drm]
>[  240.578462]  [<ffffffffa029e699>] vmw_generic_ioctl+0x179/0x280 [vmwgfx]
>[  240.581057]  [<ffffffffa029e7d5>] vmw_unlocked_ioctl+0x15/0x20 [vmwgfx]
>[  240.583474]  [<ffffffff81208a90>] do_vfs_ioctl+0x300/0x520
>[  240.585533]  [<ffffffff8117d60b>] ? context_tracking_user_exit+0xbb/0x120
>[  240.587962]  [<ffffffff810bf44d>] ? trace_hardirqs_on+0xd/0x10
>[  240.590111]  [<ffffffff810247f7>] ? syscall_trace_enter_phase2+0xa7/0x200
>[  240.592534]  [<ffffffff81208d31>] SyS_ioctl+0x81/0xa0
>[  240.594404]  [<ffffffff8178357d>] tracesys_phase2+0xd8/0xdd
>[  240.596408] INFO: lockdep is turned off.
>[  256.071774] init: lightdm main process (1228) killed by KILL signal
>[  360.560453] INFO: task Xorg:1276 blocked for more than 120 seconds.
>[  360.562871]       Not tainted 3.18.0-rc2 #1
>[  360.564476] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
>[  360.567298] Xorg            D ffff880037662220     0  1276      1 0x00400004
>[  360.569955]  ffff880067a07b18 0000000000000002 ffff880077dbc440 ffff880067a07fd8
>[  360.572874]  0000000000015200 0000000000015200 ffff880037662220 ffff880077dbc440
>[  360.575759]  0000000000000000 ffff88007b1d7080 ffff8800684cb020 ffff8800684cb028
>[  360.578559] Call Trace:
>[  360.579608]  [<ffffffff8177cb11>] schedule_preempt_disabled+0x31/0x80
>[  360.581914]  [<ffffffff8177f855>] __ww_mutex_lock+0x195/0x870
>[  360.584094]  [<ffffffffa01b7431>] ? drm_modeset_lock+0x41/0x130 [drm]
>[  360.586397]  [<ffffffffa01b7431>] ? drm_modeset_lock+0x41/0x130 [drm]
>[  360.588718]  [<ffffffffa01b7431>] drm_modeset_lock+0x41/0x130 [drm]
>[  360.590957]  [<ffffffffa01b6eed>] ? drm_modeset_acquire_init+0xed/0x160 [drm]
>[  360.593507]  [<ffffffffa01b7721>] ? drm_modeset_lock_crtc+0x41/0xb0 [drm]
>[  360.595945]  [<ffffffffa01b7742>] drm_modeset_lock_crtc+0x62/0xb0 [drm]
>[  360.598291]  [<ffffffffa01a8d30>] drm_mode_cursor_common+0x70/0x360 [drm]
>[  360.600756]  [<ffffffff811a940f>] ? might_fault+0x5f/0xb0
>[  360.602690]  [<ffffffffa01ac801>] drm_mode_cursor_ioctl+0x41/0x50 [drm]
>[  360.605061]  [<ffffffffa019dc26>] drm_ioctl+0x1a6/0x640 [drm]
>[  360.607142]  [<ffffffff810bb775>] ? cpuacct_account_field+0x5/0xc0
>[  360.609335]  [<ffffffffa019da80>] ? drm_getmap+0xf0/0xf0 [drm]
>[  360.611454]  [<ffffffffa029e699>] vmw_generic_ioctl+0x179/0x280 [vmwgfx]
>[  360.613812]  [<ffffffffa029e7d5>] vmw_unlocked_ioctl+0x15/0x20 [vmwgfx]
>[  360.616189]  [<ffffffff81208a90>] do_vfs_ioctl+0x300/0x520
>[  360.618174]  [<ffffffff8117d60b>] ? context_tracking_user_exit+0xbb/0x120
>[  360.620616]  [<ffffffff810bf44d>] ? trace_hardirqs_on+0xd/0x10
>[  360.622699]  [<ffffffff810247f7>] ? syscall_trace_enter_phase2+0xa7/0x200
>[  360.625130]  [<ffffffff81208d31>] SyS_ioctl+0x81/0xa0
>[  360.626944]  [<ffffffff8178357d>] tracesys_phase2+0xd8/0xdd
>[  360.628944] INFO: lockdep is turned off.
>[  480.590299] INFO: task Xorg:1276 blocked for more than 120 seconds.
>[  480.593824]       Not tainted 3.18.0-rc2 #1
>[  480.595400] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
>[  480.598308] Xorg            D ffff880037662220     0  1276      1 0x00400004
>[  480.600968]  ffff880067a07b18 0000000000000002 ffff880077dbc440 ffff880067a07fd8
>[  480.603831]  0000000000015200 0000000000015200 ffff880037662220 ffff880077dbc440
>[  480.606766]  0000000000000000 ffff88007b1d7080 ffff8800684cb020 ffff8800684cb028
>[  480.609678] Call Trace:
>[  480.610632]  [<ffffffff8177cb11>] schedule_preempt_disabled+0x31/0x80
>[  480.612980]  [<ffffffff8177f855>] __ww_mutex_lock+0x195/0x870
>[  480.615191]  [<ffffffffa01b7431>] ? drm_modeset_lock+0x41/0x130 [drm]
>[  480.617571]  [<ffffffffa01b7431>] ? drm_modeset_lock+0x41/0x130 [drm]
>[  480.619956]  [<ffffffffa01b7431>] drm_modeset_lock+0x41/0x130 [drm]
>[  480.622280]  [<ffffffffa01b6eed>] ? drm_modeset_acquire_init+0xed/0x160 [drm]
>[  480.624844]  [<ffffffffa01b7721>] ? drm_modeset_lock_crtc+0x41/0xb0 [drm]
>[  480.627305]  [<ffffffffa01b7742>] drm_modeset_lock_crtc+0x62/0xb0 [drm]
>[  480.629750]  [<ffffffffa01a8d30>] drm_mode_cursor_common+0x70/0x360 [drm]
>[  480.632224]  [<ffffffff811a940f>] ? might_fault+0x5f/0xb0
>[  480.634235]  [<ffffffffa01ac801>] drm_mode_cursor_ioctl+0x41/0x50 [drm]
>[  480.636644]  [<ffffffffa019dc26>] drm_ioctl+0x1a6/0x640 [drm]
>[  480.638762]  [<ffffffff810bb775>] ? cpuacct_account_field+0x5/0xc0
>[  480.641006]  [<ffffffffa019da80>] ? drm_getmap+0xf0/0xf0 [drm]
>[  480.643166]  [<ffffffffa029e699>] vmw_generic_ioctl+0x179/0x280 [vmwgfx]
>[  480.645629]  [<ffffffffa029e7d5>] vmw_unlocked_ioctl+0x15/0x20 [vmwgfx]
>[  480.648012]  [<ffffffff81208a90>] do_vfs_ioctl+0x300/0x520
>[  480.650054]  [<ffffffff8117d60b>] ? context_tracking_user_exit+0xbb/0x120
>[  480.652502]  [<ffffffff810bf44d>] ? trace_hardirqs_on+0xd/0x10
>[  480.654650]  [<ffffffff810247f7>] ? syscall_trace_enter_phase2+0xa7/0x200
>[  480.657121]  [<ffffffff81208d31>] SyS_ioctl+0x81/0xa0
>[  480.658940]  [<ffffffff8178357d>] tracesys_phase2+0xd8/0xdd
>[  480.660961] INFO: lockdep is turned off.
>[  600.624027] INFO: task Xorg:1276 blocked for more than 120 seconds.
>[  600.626465]       Not tainted 3.18.0-rc2 #1
>[  600.628116] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
>[  600.630974] Xorg            D ffff880037662220     0  1276      1 0x00400004
>[  600.633621]  ffff880067a07b18 0000000000000002 ffff880077dbc440 ffff880067a07fd8
>[  600.636610]  0000000000015200 0000000000015200 ffff880037662220 ffff880077dbc440
>[  600.639508]  0000000000000000 ffff88007b1d7080 ffff8800684cb020 ffff8800684cb028
>[  600.642394] Call Trace:
>[  600.643388]  [<ffffffff8177cb11>] schedule_preempt_disabled+0x31/0x80
>[  600.645694]  [<ffffffff8177f855>] __ww_mutex_lock+0x195/0x870
>[  600.647930]  [<ffffffffa01b7431>] ? drm_modeset_lock+0x41/0x130 [drm]
>[  600.650262]  [<ffffffffa01b7431>] ? drm_modeset_lock+0x41/0x130 [drm]
>[  600.652632]  [<ffffffffa01b7431>] drm_modeset_lock+0x41/0x130 [drm]
>[  600.654947]  [<ffffffffa01b6eed>] ? drm_modeset_acquire_init+0xed/0x160 [drm]
>[  600.657528]  [<ffffffffa01b7721>] ? drm_modeset_lock_crtc+0x41/0xb0 [drm]
>[  600.660020]  [<ffffffffa01b7742>] drm_modeset_lock_crtc+0x62/0xb0 [drm]
>[  600.662408]  [<ffffffffa01a8d30>] drm_mode_cursor_common+0x70/0x360 [drm]
>[  600.664909]  [<ffffffff811a940f>] ? might_fault+0x5f/0xb0
>[  600.666894]  [<ffffffffa01ac801>] drm_mode_cursor_ioctl+0x41/0x50 [drm]
>[  600.669271]  [<ffffffffa019dc26>] drm_ioctl+0x1a6/0x640 [drm]
>[  600.671418]  [<ffffffff810bb775>] ? cpuacct_account_field+0x5/0xc0
>[  600.673668]  [<ffffffffa019da80>] ? drm_getmap+0xf0/0xf0 [drm]
>[  600.675857]  [<ffffffffa029e699>] vmw_generic_ioctl+0x179/0x280 [vmwgfx]
>[  600.678271]  [<ffffffffa029e7d5>] vmw_unlocked_ioctl+0x15/0x20 [vmwgfx]
>[  600.680699]  [<ffffffff81208a90>] do_vfs_ioctl+0x300/0x520
>[  600.682742]  [<ffffffff8117d60b>] ? context_tracking_user_exit+0xbb/0x120
>[  600.685182]  [<ffffffff810bf44d>] ? trace_hardirqs_on+0xd/0x10
>[  600.687357]  [<ffffffff810247f7>] ? syscall_trace_enter_phase2+0xa7/0x200
>[  600.689790]  [<ffffffff81208d31>] SyS_ioctl+0x81/0xa0
>[  600.691651]  [<ffffffff8178357d>] tracesys_phase2+0xd8/0xdd
>[  600.693658] INFO: lockdep is turned off.
>[  720.658053] INFO: task Xorg:1276 blocked for more than 120 seconds.
>[  720.663358]       Not tainted 3.18.0-rc2 #1
>[  720.666239] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
>[  720.669060] Xorg            D ffff880037662220     0  1276      1 0x00400004
>[  720.671704]  ffff880067a07b18 0000000000000002 ffff880077dbc440 ffff880067a07fd8
>[  720.674638]  0000000000015200 0000000000015200 ffff880037662220 ffff880077dbc440
>[  720.677620]  0000000000000000 ffff88007b1d7080 ffff8800684cb020 ffff8800684cb028
>[  720.680521] Call Trace:
>[  720.681492]  [<ffffffff8177cb11>] schedule_preempt_disabled+0x31/0x80
>[  720.683810]  [<ffffffff8177f855>] __ww_mutex_lock+0x195/0x870
>[  720.686050]  [<ffffffffa01b7431>] ? drm_modeset_lock+0x41/0x130 [drm]
>[  720.688431]  [<ffffffffa01b7431>] ? drm_modeset_lock+0x41/0x130 [drm]
>[  720.690775]  [<ffffffffa01b7431>] drm_modeset_lock+0x41/0x130 [drm]
>[  720.693062]  [<ffffffffa01b6eed>] ? drm_modeset_acquire_init+0xed/0x160 [drm]
>[  720.695644]  [<ffffffffa01b7721>] ? drm_modeset_lock_crtc+0x41/0xb0 [drm]
>[  720.698120]  [<ffffffffa01b7742>] drm_modeset_lock_crtc+0x62/0xb0 [drm]
>[  720.700518]  [<ffffffffa01a8d30>] drm_mode_cursor_common+0x70/0x360 [drm]
>[  720.702968]  [<ffffffff811a940f>] ? might_fault+0x5f/0xb0
>[  720.704956]  [<ffffffffa01ac801>] drm_mode_cursor_ioctl+0x41/0x50 [drm]
>[  720.707350]  [<ffffffffa019dc26>] drm_ioctl+0x1a6/0x640 [drm]
>[  720.709481]  [<ffffffff810bb775>] ? cpuacct_account_field+0x5/0xc0
>[  720.711711]  [<ffffffffa019da80>] ? drm_getmap+0xf0/0xf0 [drm]
>[  720.713978]  [<ffffffffa029e699>] vmw_generic_ioctl+0x179/0x280 [vmwgfx]
>[  720.716396]  [<ffffffffa029e7d5>] vmw_unlocked_ioctl+0x15/0x20 [vmwgfx]
>[  720.718815]  [<ffffffff81208a90>] do_vfs_ioctl+0x300/0x520
>[  720.720830]  [<ffffffff8117d60b>] ? context_tracking_user_exit+0xbb/0x120
>[  720.723253]  [<ffffffff810bf44d>] ? trace_hardirqs_on+0xd/0x10
>[  720.725400]  [<ffffffff810247f7>] ? syscall_trace_enter_phase2+0xa7/0x200
>[  720.727839]  [<ffffffff81208d31>] SyS_ioctl+0x81/0xa0
>[  720.729715]  [<ffffffff8178357d>] tracesys_phase2+0xd8/0xdd
>[  720.731774] INFO: lockdep is turned off.
>[  840.695892] INFO: task Xorg:1276 blocked for more than 120 seconds.
>[  840.699245]       Not tainted 3.18.0-rc2 #1
>[  840.701293] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
>[  840.704177] Xorg            D ffff880037662220     0  1276      1 0x00400004
>[  840.706868]  ffff880067a07b18 0000000000000002 ffff880077dbc440 ffff880067a07fd8
>[  840.709749]  0000000000015200 0000000000015200 ffff880037662220 ffff880077dbc440
>[  840.712650]  0000000000000000 ffff88007b1d7080 ffff8800684cb020 ffff8800684cb028
>[  840.715579] Call Trace:
>[  840.716528]  [<ffffffff8177cb11>] schedule_preempt_disabled+0x31/0x80
>[  840.718891]  [<ffffffff8177f855>] __ww_mutex_lock+0x195/0x870
>[  840.721075]  [<ffffffffa01b7431>] ? drm_modeset_lock+0x41/0x130 [drm]
>[  840.723442]  [<ffffffffa01b7431>] ? drm_modeset_lock+0x41/0x130 [drm]
>[  840.725766]  [<ffffffffa01b7431>] drm_modeset_lock+0x41/0x130 [drm]
>[  840.728066]  [<ffffffffa01b6eed>] ? drm_modeset_acquire_init+0xed/0x160 [drm]
>[  840.730710]  [<ffffffffa01b7721>] ? drm_modeset_lock_crtc+0x41/0xb0 [drm]
>[  840.733154]  [<ffffffffa01b7742>] drm_modeset_lock_crtc+0x62/0xb0 [drm]
>[  840.735585]  [<ffffffffa01a8d30>] drm_mode_cursor_common+0x70/0x360 [drm]
>[  840.738052]  [<ffffffff811a940f>] ? might_fault+0x5f/0xb0
>[  840.740044]  [<ffffffffa01ac801>] drm_mode_cursor_ioctl+0x41/0x50 [drm]
>[  840.742466]  [<ffffffffa019dc26>] drm_ioctl+0x1a6/0x640 [drm]
>[  840.744552]  [<ffffffff810bb775>] ? cpuacct_account_field+0x5/0xc0
>[  840.746821]  [<ffffffffa019da80>] ? drm_getmap+0xf0/0xf0 [drm]
>[  840.748939]  [<ffffffffa029e699>] vmw_generic_ioctl+0x179/0x280 [vmwgfx]
>[  840.751400]  [<ffffffffa029e7d5>] vmw_unlocked_ioctl+0x15/0x20 [vmwgfx]
>[  840.753779]  [<ffffffff81208a90>] do_vfs_ioctl+0x300/0x520
>[  840.755840]  [<ffffffff8117d60b>] ? context_tracking_user_exit+0xbb/0x120
>[  840.758312]  [<ffffffff810bf44d>] ? trace_hardirqs_on+0xd/0x10
>[  840.760449]  [<ffffffff810247f7>] ? syscall_trace_enter_phase2+0xa7/0x200
>[  840.762911]  [<ffffffff81208d31>] SyS_ioctl+0x81/0xa0
>[  840.764734]  [<ffffffff8178357d>] tracesys_phase2+0xd8/0xdd
>[  840.766762] INFO: lockdep is turned off.
>[  960.729262] INFO: task Xorg:1276 blocked for more than 120 seconds.
>[  960.734717]       Not tainted 3.18.0-rc2 #1
>[  960.738244] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
>[  960.741686] Xorg            D ffff880037662220     0  1276      1 0x00400004
>[  960.744408]  ffff880067a07b18 0000000000000002 ffff880077dbc440 ffff880067a07fd8
>[  960.747310]  0000000000015200 0000000000015200 ffff880037662220 ffff880077dbc440
>[  960.750219]  0000000000000000 ffff88007b1d7080 ffff8800684cb020 ffff8800684cb028
>[  960.753141] Call Trace:
>[  960.754093]  [<ffffffff8177cb11>] schedule_preempt_disabled+0x31/0x80
>[  960.756464]  [<ffffffff8177f855>] __ww_mutex_lock+0x195/0x870
>[  960.758735]  [<ffffffffa01b7431>] ? drm_modeset_lock+0x41/0x130 [drm]
>[  960.761135]  [<ffffffffa01b7431>] ? drm_modeset_lock+0x41/0x130 [drm]
>[  960.763544]  [<ffffffffa01b7431>] drm_modeset_lock+0x41/0x130 [drm]
>[  960.765859]  [<ffffffffa01b6eed>] ? drm_modeset_acquire_init+0xed/0x160 [drm]
>[  960.768453]  [<ffffffffa01b7721>] ? drm_modeset_lock_crtc+0x41/0xb0 [drm]
>[  960.770915]  [<ffffffffa01b7742>] drm_modeset_lock_crtc+0x62/0xb0 [drm]
>[  960.773382]  [<ffffffffa01a8d30>] drm_mode_cursor_common+0x70/0x360 [drm]
>[  960.775839]  [<ffffffff811a940f>] ? might_fault+0x5f/0xb0
>[  960.777827]  [<ffffffffa01ac801>] drm_mode_cursor_ioctl+0x41/0x50 [drm]
>[  960.780257]  [<ffffffffa019dc26>] drm_ioctl+0x1a6/0x640 [drm]
>[  960.782352]  [<ffffffff810bb775>] ? cpuacct_account_field+0x5/0xc0
>[  960.784635]  [<ffffffffa019da80>] ? drm_getmap+0xf0/0xf0 [drm]
>[  960.786758]  [<ffffffffa029e699>] vmw_generic_ioctl+0x179/0x280 [vmwgfx]
>[  960.789224]  [<ffffffffa029e7d5>] vmw_unlocked_ioctl+0x15/0x20 [vmwgfx]
>[  960.791607]  [<ffffffff81208a90>] do_vfs_ioctl+0x300/0x520
>[  960.793635]  [<ffffffff8117d60b>] ? context_tracking_user_exit+0xbb/0x120
>[  960.796083]  [<ffffffff810bf44d>] ? trace_hardirqs_on+0xd/0x10
>[  960.798238]  [<ffffffff810247f7>] ? syscall_trace_enter_phase2+0xa7/0x200
>[  960.800696]  [<ffffffff81208d31>] SyS_ioctl+0x81/0xa0
>[  960.802509]  [<ffffffff8178357d>] tracesys_phase2+0xd8/0xdd

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Attachments on bug 1155825: 951411 | 952292