bug running amd-staging-4.12

[Dave Airlie]

I'm seeing this go past a fair bit.

Dave.

[ 3640.825412] BUG: sleeping function called from invalid context at
/home/airlied/devel/kernel/linux-2.6/kernel/locking/mutex.c:979
[ 3640.825415] in_atomic(): 1, irqs_disabled(): 0, pid: 2733, name: deqp-vk
[ 3640.825416] INFO: lockdep is turned off.
[ 3640.825419] CPU: 5 PID: 2733 Comm: deqp-vk Tainted: G        W
 4.12.0+ #225
[ 3640.825420] Hardware name: To be filled by O.E.M. To be filled by
O.E.M./M5A97 R2.0, BIOS 2603 06/26/2015
[ 3640.825422] Call Trace:
[ 3640.825428]  dump_stack+0x68/0x92
[ 3640.825430]  ___might_sleep+0x1e9/0x1fc
[ 3640.825433]  __might_sleep+0x68/0x6f
[ 3640.825435]  ww_mutex_lock+0x20/0x4e
[ 3640.825443]  ttm_bo_unref+0x252/0x43f [ttm]
[ 3640.825507]  amdgpu_bo_unref+0x22/0x34 [amdgpu]
[ 3640.825543]  amdgpu_vm_free_levels+0x26/0x59 [amdgpu]
[ 3640.825578]  amdgpu_vm_free_levels+0x57/0x59 [amdgpu]
[ 3640.825614]  amdgpu_vm_fini+0x1c6/0x212 [amdgpu]
[ 3640.825650]  ? amdgpu_vm_bo_rmv+0x21b/0x280 [amdgpu]
[ 3640.825684]  amdgpu_driver_postclose_kms+0x157/0x1d9 [amdgpu]
[ 3640.825701]  drm_release+0x28e/0x30f [drm]
[ 3640.825704]  __fput+0x100/0x1bb
[ 3640.825706]  ____fput+0x9/0xb
[ 3640.825708]  task_work_run+0x72/0x9b
[ 3640.825711]  do_exit+0x4f3/0xab1
[ 3640.825713]  ? lock_acquire+0x125/0x1b9
[ 3640.825716]  do_group_exit+0x45/0xb0
[ 3640.825718]  get_signal+0x6e1/0x77f
[ 3640.825722]  do_signal+0x23/0x546
[ 3640.825724]  ? __send_signal+0x2df/0x70c
[ 3640.825727]  ? trace_hardirqs_on+0xd/0xf
[ 3640.825729]  ? force_sig_info+0xc0/0xcf
[ 3640.825732]  exit_to_usermode_loop+0x39/0x7b
[ 3640.825734]  prepare_exit_to_usermode+0x3c/0x51
[ 3640.825736]  retint_user+0x8/0x1d
[ 3640.825738] RIP: 0033:0x7f8885f25f8f
[ 3640.825739] RSP: 002b:00007fffffffce90 EFLAGS: 00000206
[ 3640.825742] RAX: 0000000002244400 RBX: 00007fffffffd140 RCX: 00000000024e9950
[ 3640.825743] RDX: 00000000024e9800 RSI: 00000000024e9950 RDI: 0000000002244400
[ 3640.825744] RBP: 00007fffffffcf20 R08: 0000000000000001 R09: 0000000002244400
[ 3640.825745] R10: 00000000024e9940 R11: 0000000000000100 R12: 0000000000000000
[ 3640.825746] R13: 0000000002244400 R14: 0000000000000009 R15: 0000000000000001