Kernel deadlock in amdgpu_job_submit

Marek Olšák maraeo at gmail.com
Wed Aug 17 11:22:44 UTC 2016 

Hi,

I have a kernel deadlock here. Piglit tests running at the same time:

marek    32295  0.0  0.6 472148 50100 ?        Ssl  12:53   0:00
/home/marek/dev/piglit/bin/gl-1.0-blend-func -auto -fbo
marek    32403  0.0  0.6 532528 55908 ?        Ssl  12:53   0:00
/home/marek/dev/piglit/bin/tex3d -auto
marek    32409  6.5  0.7 536616 62092 ?        Ssl  12:53   1:30
/home/marek/dev/piglit/bin/tex3d-maxsize -auto
marek    32426  0.0  0.6 467872 48920 ?        Ssl  12:53   0:00
/home/marek/dev/piglit/bin/texture-packed-formats -auto

dmesg:

The failures are sort of expected behavior. The deadlock is not:

[10757.929057] [TTM] Failed to find memory space for buffer
0xffff88020f0c5468 eviction
[10757.929061] [TTM] No space for ffff88020f0c5468 (263168 pages, 1052672K,
1028M)
[10757.929062] [TTM]   placement[0]=0x00060002 (1)
[10757.929063] [TTM]     has_type: 1
[10757.929063] [TTM]     use_type: 1
[10757.929064] [TTM]     flags: 0x0000000A
[10757.929065] [TTM]     gpu_offset: 0x80000000
[10757.929065] [TTM]     size: 524288
[10757.929066] [TTM]     available_caching: 0x00070000
[10757.929066] [TTM]     default_caching: 0x00010000
[10757.929105] [TTM] Failed to find memory space for buffer
0xffff88020f0c5468 eviction
[10757.929106] [TTM] No space for ffff88020f0c5468 (263168 pages, 1052672K,
1028M)
[10757.929107] [TTM]   placement[0]=0x00060002 (1)
[10757.929108] [TTM]     has_type: 1
[10757.929108] [TTM]     use_type: 1
[10757.929109] [TTM]     flags: 0x0000000A
[10757.929110] [TTM]     gpu_offset: 0x80000000
[10757.929110] [TTM]     size: 524288
[10757.929111] [TTM]     available_caching: 0x00070000
[10757.929111] [TTM]     default_caching: 0x00010000
[10757.929127] [TTM] Failed to find memory space for buffer
0xffff88020f0c5468 eviction
[10757.929128] [TTM] No space for ffff88020f0c5468 (263168 pages, 1052672K,
1028M)
[10757.929129] [TTM]   placement[0]=0x00060002 (1)
[10757.929130] [TTM]     has_type: 1
[10757.929131] [TTM]     use_type: 1
[10757.929132] [TTM]     flags: 0x0000000A
[10757.929132] [TTM]     gpu_offset: 0x80000000
[10757.929133] [TTM]     size: 524288
[10757.929133] [TTM]     available_caching: 0x00070000
[10757.929134] [TTM]     default_caching: 0x00010000
[10757.929136] [TTM] Failed to find memory space for buffer
0xffff88020f0c5468 eviction
[10757.929137] [TTM] No space for ffff88020f0c5468 (263168 pages, 1052672K,
1028M)
[10757.929138] [TTM]   placement[0]=0x00060002 (1)
[10757.929138] [TTM]     has_type: 1
[10757.929139] [TTM]     use_type: 1
[10757.929139] [TTM]     flags: 0x0000000A
[10757.929140] [TTM]     gpu_offset: 0x80000000
[10757.929140] [TTM]     size: 524288
[10757.929141] [TTM]     available_caching: 0x00070000
[10757.929141] [TTM]     default_caching: 0x00010000
[10757.929182] [drm:amdgpu_gem_object_create [amdgpu]] *ERROR* Failed to
allocate GEM object (1077936128, 6, 131072, -12)
[10848.046814] [drm:amdgpu_cs_ioctl [amdgpu]] *ERROR* Failed to process the
buffer list -16!
[10938.047062] [drm:amdgpu_cs_ioctl [amdgpu]] *ERROR* Failed to process the
buffer list -16!
[11160.387854] INFO: task Xorg:2636 blocked for more than 120 seconds.
[11160.387859]       Not tainted 4.7.0-si+ #1
[11160.387861] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[11160.387863] Xorg            D ffff88020f643898     0  2636   2624
0x00400004
[11160.387868]  ffff88020f643898 ffff880034ba0000 ffff88021522c740
ffff88020e9b0e40
[11160.387871]  ffff880034ba1f00 ffff88020f644000 ffff88020f6439b8
ffff880034ba1ee0
[11160.387874]  0000000000000000 ffff880034ba0000 ffff88020f6438b0
ffffffff8180f575
[11160.387877] Call Trace:
[11160.387885]  [<ffffffff8180f575>] schedule+0x35/0x80
[11160.387924]  [<ffffffffc01b1a57>] amd_sched_entity_push_job+0x77/0x110
[amdgpu]
[11160.387927]  [<ffffffff810c3490>] ? wake_atomic_t_function+0x60/0x60
[11160.387943]  [<ffffffffc01b2454>] amdgpu_job_submit+0x84/0xc0 [amdgpu]
[11160.387953]  [<ffffffffc01458aa>] amdgpu_copy_buffer+0x14a/0x1c0 [amdgpu]
[11160.387963]  [<ffffffffc01459bd>] amdgpu_move_blit+0x9d/0x140 [amdgpu]
[11160.387973]  [<ffffffffc0145e2a>] amdgpu_bo_move+0xca/0x270 [amdgpu]
[11160.387977]  [<ffffffffc00e9bc9>] ttm_bo_handle_move_mem+0x279/0x5a0
[ttm]
[11160.387979]  [<ffffffffc00ead4a>] ttm_bo_validate+0x13a/0x150 [ttm]
[11160.387990]  [<ffffffffc014d30f>] amdgpu_cs_list_validate+0xaf/0x1c0
[amdgpu]
[11160.388000]  [<ffffffffc014e4ab>] amdgpu_cs_ioctl+0xeab/0x10c0 [amdgpu]
[11160.388003]  [<ffffffff8113f300>] ? __delayacct_tsk_init+0x40/0x40
[11160.388013]  [<ffffffffc0071d7d>] drm_ioctl+0x2cd/0x490 [drm]
[11160.388023]  [<ffffffffc014d600>] ? amdgpu_cs_find_mapping+0xa0/0xa0
[amdgpu]
[11160.388031]  [<ffffffffc013304c>] amdgpu_drm_ioctl+0x4c/0x80 [amdgpu]
[11160.388034]  [<ffffffff8122de41>] do_vfs_ioctl+0xa1/0x5b0
[11160.388035]  [<ffffffff81090fd4>] ? restore_altstack+0x24/0x40
[11160.388037]  [<ffffffff8122e3c9>] SyS_ioctl+0x79/0x90
[11160.388039]  [<ffffffff818138b6>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[11280.388317] INFO: task Xorg:2636 blocked for more than 120 seconds.
[11280.388322]       Not tainted 4.7.0-si+ #1
[11280.388323] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[11280.388325] Xorg            D ffff88020f643898     0  2636   2624
0x00400004
[11280.388331]  ffff88020f643898 ffff880034ba0000 ffff88021522c740
ffff88020e9b0e40
[11280.388334]  ffff880034ba1f00 ffff88020f644000 ffff88020f6439b8
ffff880034ba1ee0
[11280.388337]  0000000000000000 ffff880034ba0000 ffff88020f6438b0
ffffffff8180f575
[11280.388340] Call Trace:
[11280.388349]  [<ffffffff8180f575>] schedule+0x35/0x80
[11280.388387]  [<ffffffffc01b1a57>] amd_sched_entity_push_job+0x77/0x110
[amdgpu]
[11280.388390]  [<ffffffff810c3490>] ? wake_atomic_t_function+0x60/0x60
[11280.388405]  [<ffffffffc01b2454>] amdgpu_job_submit+0x84/0xc0 [amdgpu]
[11280.388415]  [<ffffffffc01458aa>] amdgpu_copy_buffer+0x14a/0x1c0 [amdgpu]
[11280.388425]  [<ffffffffc01459bd>] amdgpu_move_blit+0x9d/0x140 [amdgpu]
[11280.388434]  [<ffffffffc0145e2a>] amdgpu_bo_move+0xca/0x270 [amdgpu]
[11280.388438]  [<ffffffffc00e9bc9>] ttm_bo_handle_move_mem+0x279/0x5a0
[ttm]
[11280.388441]  [<ffffffffc00ead4a>] ttm_bo_validate+0x13a/0x150 [ttm]
[11280.388452]  [<ffffffffc014d30f>] amdgpu_cs_list_validate+0xaf/0x1c0
[amdgpu]
[11280.388462]  [<ffffffffc014e4ab>] amdgpu_cs_ioctl+0xeab/0x10c0 [amdgpu]
[11280.388464]  [<ffffffff8113f300>] ? __delayacct_tsk_init+0x40/0x40
[11280.388474]  [<ffffffffc0071d7d>] drm_ioctl+0x2cd/0x490 [drm]
[11280.388484]  [<ffffffffc014d600>] ? amdgpu_cs_find_mapping+0xa0/0xa0
[amdgpu]
[11280.388493]  [<ffffffffc013304c>] amdgpu_drm_ioctl+0x4c/0x80 [amdgpu]
[11280.388495]  [<ffffffff8122de41>] do_vfs_ioctl+0xa1/0x5b0
[11280.388497]  [<ffffffff81090fd4>] ? restore_altstack+0x24/0x40
[11280.388499]  [<ffffffff8122e3c9>] SyS_ioctl+0x79/0x90
[11280.388501]  [<ffffffff818138b6>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[11400.388859] INFO: task Xorg:2636 blocked for more than 120 seconds.
[11400.388862]       Not tainted 4.7.0-si+ #1
[11400.388863] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[11400.388864] Xorg            D ffff88020f643898     0  2636   2624
0x00400004
[11400.388866]  ffff88020f643898 ffff880034ba0000 ffff88021522c740
ffff88020e9b0e40
[11400.388868]  ffff880034ba1f00 ffff88020f644000 ffff88020f6439b8
ffff880034ba1ee0
[11400.388869]  0000000000000000 ffff880034ba0000 ffff88020f6438b0
ffffffff8180f575
[11400.388870] Call Trace:
[11400.388876]  [<ffffffff8180f575>] schedule+0x35/0x80
[11400.388899]  [<ffffffffc01b1a57>] amd_sched_entity_push_job+0x77/0x110
[amdgpu]
[11400.388902]  [<ffffffff810c3490>] ? wake_atomic_t_function+0x60/0x60
[11400.388917]  [<ffffffffc01b2454>] amdgpu_job_submit+0x84/0xc0 [amdgpu]
[11400.388928]  [<ffffffffc01458aa>] amdgpu_copy_buffer+0x14a/0x1c0 [amdgpu]
[11400.388938]  [<ffffffffc01459bd>] amdgpu_move_blit+0x9d/0x140 [amdgpu]
[11400.388947]  [<ffffffffc0145e2a>] amdgpu_bo_move+0xca/0x270 [amdgpu]
[11400.388951]  [<ffffffffc00e9bc9>] ttm_bo_handle_move_mem+0x279/0x5a0
[ttm]
[11400.388953]  [<ffffffffc00ead4a>] ttm_bo_validate+0x13a/0x150 [ttm]
[11400.388964]  [<ffffffffc014d30f>] amdgpu_cs_list_validate+0xaf/0x1c0
[amdgpu]
[11400.388974]  [<ffffffffc014e4ab>] amdgpu_cs_ioctl+0xeab/0x10c0 [amdgpu]
[11400.388976]  [<ffffffff8113f300>] ? __delayacct_tsk_init+0x40/0x40
[11400.388986]  [<ffffffffc0071d7d>] drm_ioctl+0x2cd/0x490 [drm]
[11400.388996]  [<ffffffffc014d600>] ? amdgpu_cs_find_mapping+0xa0/0xa0
[amdgpu]
[11400.389005]  [<ffffffffc013304c>] amdgpu_drm_ioctl+0x4c/0x80 [amdgpu]
[11400.389007]  [<ffffffff8122de41>] do_vfs_ioctl+0xa1/0x5b0
[11400.389009]  [<ffffffff81090fd4>] ? restore_altstack+0x24/0x40
[11400.389010]  [<ffffffff8122e3c9>] SyS_ioctl+0x79/0x90
[11400.389012]  [<ffffffff818138b6>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[11520.389297] INFO: task Xorg:2636 blocked for more than 120 seconds.
[11520.389300]       Not tainted 4.7.0-si+ #1
[11520.389301] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[11520.389302] Xorg            D ffff88020f643898     0  2636   2624
0x00400004
[11520.389304]  ffff88020f643898 ffff880034ba0000 ffff88021522c740
ffff88020e9b0e40
[11520.389306]  ffff880034ba1f00 ffff88020f644000 ffff88020f6439b8
ffff880034ba1ee0
[11520.389307]  0000000000000000 ffff880034ba0000 ffff88020f6438b0
ffffffff8180f575
[11520.389309] Call Trace:
[11520.389313]  [<ffffffff8180f575>] schedule+0x35/0x80
[11520.389337]  [<ffffffffc01b1a57>] amd_sched_entity_push_job+0x77/0x110
[amdgpu]
[11520.389340]  [<ffffffff810c3490>] ? wake_atomic_t_function+0x60/0x60
[11520.389355]  [<ffffffffc01b2454>] amdgpu_job_submit+0x84/0xc0 [amdgpu]
[11520.389366]  [<ffffffffc01458aa>] amdgpu_copy_buffer+0x14a/0x1c0 [amdgpu]
[11520.389375]  [<ffffffffc01459bd>] amdgpu_move_blit+0x9d/0x140 [amdgpu]
[11520.389385]  [<ffffffffc0145e2a>] amdgpu_bo_move+0xca/0x270 [amdgpu]
[11520.389389]  [<ffffffffc00e9bc9>] ttm_bo_handle_move_mem+0x279/0x5a0
[ttm]
[11520.389391]  [<ffffffffc00ead4a>] ttm_bo_validate+0x13a/0x150 [ttm]
[11520.389402]  [<ffffffffc014d30f>] amdgpu_cs_list_validate+0xaf/0x1c0
[amdgpu]
[11520.389412]  [<ffffffffc014e4ab>] amdgpu_cs_ioctl+0xeab/0x10c0 [amdgpu]
[11520.389414]  [<ffffffff8113f300>] ? __delayacct_tsk_init+0x40/0x40
[11520.389424]  [<ffffffffc0071d7d>] drm_ioctl+0x2cd/0x490 [drm]
[11520.389434]  [<ffffffffc014d600>] ? amdgpu_cs_find_mapping+0xa0/0xa0
[amdgpu]
[11520.389443]  [<ffffffffc013304c>] amdgpu_drm_ioctl+0x4c/0x80 [amdgpu]
[11520.389445]  [<ffffffff8122de41>] do_vfs_ioctl+0xa1/0x5b0
[11520.389447]  [<ffffffff81090fd4>] ? restore_altstack+0x24/0x40
[11520.389448]  [<ffffffff8122e3c9>] SyS_ioctl+0x79/0x90
[11520.389450]  [<ffffffff818138b6>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[11640.389659] INFO: task Xorg:2636 blocked for more than 120 seconds.
[11640.389664]       Not tainted 4.7.0-si+ #1
[11640.389665] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[11640.389667] Xorg            D ffff88020f643898     0  2636   2624
0x00400004
[11640.389672]  ffff88020f643898 ffff880034ba0000 ffff88021522c740
ffff88020e9b0e40
[11640.389676]  ffff880034ba1f00 ffff88020f644000 ffff88020f6439b8
ffff880034ba1ee0
[11640.389679]  0000000000000000 ffff880034ba0000 ffff88020f6438b0
ffffffff8180f575
[11640.389682] Call Trace:
[11640.389690]  [<ffffffff8180f575>] schedule+0x35/0x80
[11640.389729]  [<ffffffffc01b1a57>] amd_sched_entity_push_job+0x77/0x110
[amdgpu]
[11640.389732]  [<ffffffff810c3490>] ? wake_atomic_t_function+0x60/0x60
[11640.389747]  [<ffffffffc01b2454>] amdgpu_job_submit+0x84/0xc0 [amdgpu]
[11640.389758]  [<ffffffffc01458aa>] amdgpu_copy_buffer+0x14a/0x1c0 [amdgpu]
[11640.389768]  [<ffffffffc01459bd>] amdgpu_move_blit+0x9d/0x140 [amdgpu]
[11640.389777]  [<ffffffffc0145e2a>] amdgpu_bo_move+0xca/0x270 [amdgpu]
[11640.389781]  [<ffffffffc00e9bc9>] ttm_bo_handle_move_mem+0x279/0x5a0
[ttm]
[11640.389784]  [<ffffffffc00ead4a>] ttm_bo_validate+0x13a/0x150 [ttm]
[11640.389795]  [<ffffffffc014d30f>] amdgpu_cs_list_validate+0xaf/0x1c0
[amdgpu]
[11640.389805]  [<ffffffffc014e4ab>] amdgpu_cs_ioctl+0xeab/0x10c0 [amdgpu]
[11640.389807]  [<ffffffff8113f300>] ? __delayacct_tsk_init+0x40/0x40
[11640.389817]  [<ffffffffc0071d7d>] drm_ioctl+0x2cd/0x490 [drm]
[11640.389828]  [<ffffffffc014d600>] ? amdgpu_cs_find_mapping+0xa0/0xa0
[amdgpu]
[11640.389837]  [<ffffffffc013304c>] amdgpu_drm_ioctl+0x4c/0x80 [amdgpu]
[11640.389839]  [<ffffffff8122de41>] do_vfs_ioctl+0xa1/0x5b0
[11640.389840]  [<ffffffff81090fd4>] ? restore_altstack+0x24/0x40
[11640.389842]  [<ffffffff8122e3c9>] SyS_ioctl+0x79/0x90
[11640.389844]  [<ffffffff818138b6>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[11760.390205] INFO: task Xorg:2636 blocked for more than 120 seconds.
[11760.390208]       Not tainted 4.7.0-si+ #1
[11760.390208] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[11760.390209] Xorg            D ffff88020f643898     0  2636   2624
0x00400004
[11760.390212]  ffff88020f643898 ffff880034ba0000 ffff88021522c740
ffff88020e9b0e40
[11760.390213]  ffff880034ba1f00 ffff88020f644000 ffff88020f6439b8
ffff880034ba1ee0
[11760.390215]  0000000000000000 ffff880034ba0000 ffff88020f6438b0
ffffffff8180f575
[11760.390216] Call Trace:
[11760.390221]  [<ffffffff8180f575>] schedule+0x35/0x80
[11760.390244]  [<ffffffffc01b1a57>] amd_sched_entity_push_job+0x77/0x110
[amdgpu]
[11760.390247]  [<ffffffff810c3490>] ? wake_atomic_t_function+0x60/0x60
[11760.390262]  [<ffffffffc01b2454>] amdgpu_job_submit+0x84/0xc0 [amdgpu]
[11760.390273]  [<ffffffffc01458aa>] amdgpu_copy_buffer+0x14a/0x1c0 [amdgpu]
[11760.390282]  [<ffffffffc01459bd>] amdgpu_move_blit+0x9d/0x140 [amdgpu]
[11760.390291]  [<ffffffffc0145e2a>] amdgpu_bo_move+0xca/0x270 [amdgpu]
[11760.390296]  [<ffffffffc00e9bc9>] ttm_bo_handle_move_mem+0x279/0x5a0
[ttm]
[11760.390298]  [<ffffffffc00ead4a>] ttm_bo_validate+0x13a/0x150 [ttm]
[11760.390309]  [<ffffffffc014d30f>] amdgpu_cs_list_validate+0xaf/0x1c0
[amdgpu]
[11760.390319]  [<ffffffffc014e4ab>] amdgpu_cs_ioctl+0xeab/0x10c0 [amdgpu]
[11760.390321]  [<ffffffff8113f300>] ? __delayacct_tsk_init+0x40/0x40
[11760.390331]  [<ffffffffc0071d7d>] drm_ioctl+0x2cd/0x490 [drm]
[11760.390341]  [<ffffffffc014d600>] ? amdgpu_cs_find_mapping+0xa0/0xa0
[amdgpu]
[11760.390350]  [<ffffffffc013304c>] amdgpu_drm_ioctl+0x4c/0x80 [amdgpu]
[11760.390352]  [<ffffffff8122de41>] do_vfs_ioctl+0xa1/0x5b0
[11760.390353]  [<ffffffff81090fd4>] ? restore_altstack+0x24/0x40
[11760.390355]  [<ffffffff8122e3c9>] SyS_ioctl+0x79/0x90
[11760.390357]  [<ffffffff818138b6>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[11880.390520] INFO: task Xorg:2636 blocked for more than 120 seconds.
[11880.390525]       Not tainted 4.7.0-si+ #1
[11880.390527] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[11880.390529] Xorg            D ffff88020f643898     0  2636   2624
0x00400004
[11880.390534]  ffff88020f643898 ffff880034ba0000 ffff88021522c740
ffff88020e9b0e40
[11880.390538]  ffff880034ba1f00 ffff88020f644000 ffff88020f6439b8
ffff880034ba1ee0
[11880.390541]  0000000000000000 ffff880034ba0000 ffff88020f6438b0
ffffffff8180f575
[11880.390544] Call Trace:
[11880.390552]  [<ffffffff8180f575>] schedule+0x35/0x80
[11880.390591]  [<ffffffffc01b1a57>] amd_sched_entity_push_job+0x77/0x110
[amdgpu]
[11880.390594]  [<ffffffff810c3490>] ? wake_atomic_t_function+0x60/0x60
[11880.390609]  [<ffffffffc01b2454>] amdgpu_job_submit+0x84/0xc0 [amdgpu]
[11880.390619]  [<ffffffffc01458aa>] amdgpu_copy_buffer+0x14a/0x1c0 [amdgpu]
[11880.390629]  [<ffffffffc01459bd>] amdgpu_move_blit+0x9d/0x140 [amdgpu]
[11880.390639]  [<ffffffffc0145e2a>] amdgpu_bo_move+0xca/0x270 [amdgpu]
[11880.390643]  [<ffffffffc00e9bc9>] ttm_bo_handle_move_mem+0x279/0x5a0
[ttm]
[11880.390646]  [<ffffffffc00ead4a>] ttm_bo_validate+0x13a/0x150 [ttm]
[11880.390657]  [<ffffffffc014d30f>] amdgpu_cs_list_validate+0xaf/0x1c0
[amdgpu]
[11880.390667]  [<ffffffffc014e4ab>] amdgpu_cs_ioctl+0xeab/0x10c0 [amdgpu]
[11880.390669]  [<ffffffff8113f300>] ? __delayacct_tsk_init+0x40/0x40
[11880.390679]  [<ffffffffc0071d7d>] drm_ioctl+0x2cd/0x490 [drm]
[11880.390690]  [<ffffffffc014d600>] ? amdgpu_cs_find_mapping+0xa0/0xa0
[amdgpu]
[11880.390699]  [<ffffffffc013304c>] amdgpu_drm_ioctl+0x4c/0x80 [amdgpu]
[11880.390701]  [<ffffffff8122de41>] do_vfs_ioctl+0xa1/0x5b0
[11880.390703]  [<ffffffff81090fd4>] ? restore_altstack+0x24/0x40
[11880.390704]  [<ffffffff8122e3c9>] SyS_ioctl+0x79/0x90
[11880.390706]  [<ffffffff818138b6>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[12000.390944] INFO: task Xorg:2636 blocked for more than 120 seconds.
[12000.390949]       Not tainted 4.7.0-si+ #1
[12000.390950] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[12000.390953] Xorg            D ffff88020f643898     0  2636   2624
0x00400004
[12000.390958]  ffff88020f643898 ffff880034ba0000 ffff88021522c740
ffff88020e9b0e40
[12000.390961]  ffff880034ba1f00 ffff88020f644000 ffff88020f6439b8
ffff880034ba1ee0
[12000.390964]  0000000000000000 ffff880034ba0000 ffff88020f6438b0
ffffffff8180f575
[12000.390967] Call Trace:
[12000.390976]  [<ffffffff8180f575>] schedule+0x35/0x80
[12000.391014]  [<ffffffffc01b1a57>] amd_sched_entity_push_job+0x77/0x110
[amdgpu]
[12000.391017]  [<ffffffff810c3490>] ? wake_atomic_t_function+0x60/0x60
[12000.391032]  [<ffffffffc01b2454>] amdgpu_job_submit+0x84/0xc0 [amdgpu]
[12000.391043]  [<ffffffffc01458aa>] amdgpu_copy_buffer+0x14a/0x1c0 [amdgpu]
[12000.391053]  [<ffffffffc01459bd>] amdgpu_move_blit+0x9d/0x140 [amdgpu]
[12000.391062]  [<ffffffffc0145e2a>] amdgpu_bo_move+0xca/0x270 [amdgpu]
[12000.391066]  [<ffffffffc00e9bc9>] ttm_bo_handle_move_mem+0x279/0x5a0
[ttm]
[12000.391069]  [<ffffffffc00ead4a>] ttm_bo_validate+0x13a/0x150 [ttm]
[12000.391080]  [<ffffffffc014d30f>] amdgpu_cs_list_validate+0xaf/0x1c0
[amdgpu]
[12000.391090]  [<ffffffffc014e4ab>] amdgpu_cs_ioctl+0xeab/0x10c0 [amdgpu]
[12000.391092]  [<ffffffff8113f300>] ? __delayacct_tsk_init+0x40/0x40
[12000.391103]  [<ffffffffc0071d7d>] drm_ioctl+0x2cd/0x490 [drm]
[12000.391113]  [<ffffffffc014d600>] ? amdgpu_cs_find_mapping+0xa0/0xa0
[amdgpu]
[12000.391122]  [<ffffffffc013304c>] amdgpu_drm_ioctl+0x4c/0x80 [amdgpu]
[12000.391124]  [<ffffffff8122de41>] do_vfs_ioctl+0xa1/0x5b0
[12000.391126]  [<ffffffff81090fd4>] ? restore_altstack+0x24/0x40
[12000.391127]  [<ffffffff8122e3c9>] SyS_ioctl+0x79/0x90
[12000.391129]  [<ffffffff818138b6>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[12120.391376] INFO: task Xorg:2636 blocked for more than 120 seconds.
[12120.391381]       Not tainted 4.7.0-si+ #1
[12120.391383] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[12120.391385] Xorg            D ffff88020f643898     0  2636   2624
0x00400004
[12120.391390]  ffff88020f643898 ffff880034ba0000 ffff88021522c740
ffff88020e9b0e40
[12120.391393]  ffff880034ba1f00 ffff88020f644000 ffff88020f6439b8
ffff880034ba1ee0
[12120.391396]  0000000000000000 ffff880034ba0000 ffff88020f6438b0
ffffffff8180f575
[12120.391399] Call Trace:
[12120.391407]  [<ffffffff8180f575>] schedule+0x35/0x80
[12120.391445]  [<ffffffffc01b1a57>] amd_sched_entity_push_job+0x77/0x110
[amdgpu]
[12120.391448]  [<ffffffff810c3490>] ? wake_atomic_t_function+0x60/0x60
[12120.391463]  [<ffffffffc01b2454>] amdgpu_job_submit+0x84/0xc0 [amdgpu]
[12120.391474]  [<ffffffffc01458aa>] amdgpu_copy_buffer+0x14a/0x1c0 [amdgpu]
[12120.391484]  [<ffffffffc01459bd>] amdgpu_move_blit+0x9d/0x140 [amdgpu]
[12120.391493]  [<ffffffffc0145e2a>] amdgpu_bo_move+0xca/0x270 [amdgpu]
[12120.391497]  [<ffffffffc00e9bc9>] ttm_bo_handle_move_mem+0x279/0x5a0
[ttm]
[12120.391500]  [<ffffffffc00ead4a>] ttm_bo_validate+0x13a/0x150 [ttm]
[12120.391511]  [<ffffffffc014d30f>] amdgpu_cs_list_validate+0xaf/0x1c0
[amdgpu]
[12120.391522]  [<ffffffffc014e4ab>] amdgpu_cs_ioctl+0xeab/0x10c0 [amdgpu]
[12120.391524]  [<ffffffff8113f300>] ? __delayacct_tsk_init+0x40/0x40
[12120.391534]  [<ffffffffc0071d7d>] drm_ioctl+0x2cd/0x490 [drm]
[12120.391544]  [<ffffffffc014d600>] ? amdgpu_cs_find_mapping+0xa0/0xa0
[amdgpu]
[12120.391553]  [<ffffffffc013304c>] amdgpu_drm_ioctl+0x4c/0x80 [amdgpu]
[12120.391555]  [<ffffffff8122de41>] do_vfs_ioctl+0xa1/0x5b0
[12120.391557]  [<ffffffff81090fd4>] ? restore_altstack+0x24/0x40
[12120.391558]  [<ffffffff8122e3c9>] SyS_ioctl+0x79/0x90
[12120.391560]  [<ffffffff818138b6>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[12120.391583] INFO: task qtcreator:712 blocked for more than 120 seconds.
[12120.391584]       Not tainted 4.7.0-si+ #1
[12120.391584] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[12120.391585] qtcreator       D ffff8800854af7c8     0   712   2661
0x00000000
[12120.391586]  ffff8800854af7c8 ffff880034ba0000 ffff88021522c740
ffff8801a0870000
[12120.391588]  ffff880034ba1f00 ffff8800854b0000 ffff8800854af8e8
ffff880034ba1ee0
[12120.391589]  0000000000000000 ffff880034ba0000 ffff8800854af7e0
ffffffff8180f575
[12120.391590] Call Trace:
[12120.391592]  [<ffffffff8180f575>] schedule+0x35/0x80
[12120.391606]  [<ffffffffc01b1a57>] amd_sched_entity_push_job+0x77/0x110
[amdgpu]
[12120.391608]  [<ffffffff810c3490>] ? wake_atomic_t_function+0x60/0x60
[12120.391621]  [<ffffffffc01b2454>] amdgpu_job_submit+0x84/0xc0 [amdgpu]
[12120.391630]  [<ffffffffc01458aa>] amdgpu_copy_buffer+0x14a/0x1c0 [amdgpu]
[12120.391640]  [<ffffffffc01459bd>] amdgpu_move_blit+0x9d/0x140 [amdgpu]
[12120.391649]  [<ffffffffc0145d24>] amdgpu_move_ram_vram+0x134/0x170
[amdgpu]
[12120.391651]  [<ffffffff811ba4e8>] ? krealloc+0x28/0xc0
[12120.391661]  [<ffffffffc0145fa1>] amdgpu_bo_move+0x241/0x270 [amdgpu]
[12120.391664]  [<ffffffffc00e9bc9>] ttm_bo_handle_move_mem+0x279/0x5a0
[ttm]
[12120.391666]  [<ffffffffc00ead4a>] ttm_bo_validate+0x13a/0x150 [ttm]
[12120.391668]  [<ffffffff811ba4e8>] ? krealloc+0x28/0xc0
[12120.391678]  [<ffffffffc014d30f>] amdgpu_cs_list_validate+0xaf/0x1c0
[amdgpu]
[12120.391688]  [<ffffffffc014e450>] amdgpu_cs_ioctl+0xe50/0x10c0 [amdgpu]
[12120.391696]  [<ffffffffc0071d7d>] drm_ioctl+0x2cd/0x490 [drm]
[12120.391705]  [<ffffffffc014d600>] ? amdgpu_cs_find_mapping+0xa0/0xa0
[amdgpu]
[12120.391707]  [<ffffffff81191f96>] ? unlock_page+0x76/0x80
[12120.391709]  [<ffffffff811c828a>] ? handle_mm_fault+0x11ea/0x1d90
[12120.391717]  [<ffffffffc013304c>] amdgpu_drm_ioctl+0x4c/0x80 [amdgpu]
[12120.391719]  [<ffffffff8122de41>] do_vfs_ioctl+0xa1/0x5b0
[12120.391721]  [<ffffffff81069515>] ? __do_page_fault+0x205/0x4d0
[12120.391722]  [<ffffffff8122e3c9>] SyS_ioctl+0x79/0x90
[12120.391724]  [<ffffffff818138b6>] entry_SYSCALL_64_fastpath+0x1e/0xa8

Marek
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