[Bug 198883] New: amdgpu: carrizo: Screen stalls after starting X

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=198883

            Bug ID: 198883
           Summary: amdgpu: carrizo: Screen stalls after starting X
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.15.0
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: ricardo.ribalda at gmail.com
        Regression: No

The screen freezes completely and does not even respond to commands like
Alt+Ctrl+F1.

I can still ssh the device.

Seems to happen more often when the system is cold :S.

Similar (maybe same as #151341)

Relevant dmesg:

[  246.751055] INFO: task amdgpu_cs:0:530 blocked for more than 120 seconds.
[  246.751067]       Tainted: G           O     4.15.0-qtec-standard #3
[  246.751070] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[  246.751074] amdgpu_cs:0     D    0   530    518 0x00080000
[  246.751079] Call Trace:
[  246.751107]  ? __schedule+0x25c/0x860
[  246.751113]  ? dma_fence_default_wait+0x10b/0x280
[  246.751115]  ? dma_fence_default_wait+0x1c7/0x280
[  246.751118]  schedule+0x2f/0x90
[  246.751122]  schedule_timeout+0x1e0/0x430
[  246.751237]  ? amdgpu_vm_update_directories+0x2d/0x5d0 [amdgpu]
[  246.751241]  ? dma_fence_default_wait+0x10b/0x280
[  246.751243]  ? dma_fence_default_wait+0x1c7/0x280
[  246.751246]  dma_fence_default_wait+0x1f3/0x280
[  246.751251]  ? __kfifo_in+0x2e/0x40
[  246.751254]  ? dma_fence_default_wait+0x280/0x280
[  246.751256]  dma_fence_wait_timeout+0x2e/0x100
[  246.751319]  amdgpu_ctx_wait_prev_fence+0x49/0x80 [amdgpu]
[  246.751378]  amdgpu_cs_ioctl+0x26e/0x1a90 [amdgpu]
[  246.751403]  ? radix_tree_node_alloc.constprop.13+0x3d/0xc0
[  246.751461]  ? amdgpu_cs_find_mapping+0xc0/0xc0 [amdgpu]
[  246.751493]  drm_ioctl_kernel+0x59/0xb0 [drm]
[  246.751514]  drm_ioctl+0x29f/0x340 [drm]
[  246.751572]  ? amdgpu_cs_find_mapping+0xc0/0xc0 [amdgpu]
[  246.751620]  amdgpu_drm_ioctl+0x49/0x80 [amdgpu]
[  246.751626]  do_vfs_ioctl+0x8e/0x680
[  246.751632]  ? SyS_futex+0x11d/0x150
[  246.751635]  SyS_ioctl+0x74/0x80
[  246.751638]  ? get_vtime_delta+0xe/0x40
[  246.751642]  do_syscall_64+0x6f/0x1c0
[  246.751645]  entry_SYSCALL64_slow_path+0x25/0x25
[  246.751649] RIP: 0033:0x3c768e57e7
[  246.751651] RSP: 002b:00007fd1220d0ba8 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[  246.751655] RAX: ffffffffffffffda RBX: 00007fd1220d0c88 RCX:
0000003c768e57e7
[  246.751656] RDX: 00007fd1220d0c10 RSI: 00000000c0186444 RDI:
000000000000000c
[  246.751658] RBP: 00007fd1220d0c10 R08: 00007fd1220d0cb0 R09:
00007fd1220d0c88
[  246.751659] R10: 00007fd1220d0cb0 R11: 0000000000000246 R12:
00000000c0186444
[  246.751661] R13: 000000000000000c R14: 0000000000000008 R15:
0000000000000000

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