https://bugs.freedesktop.org/show_bug.cgi?id=93652

--- Comment #3 from Wolfgang Frisch <wfr@roembden.net> ---
I'm not sure if this is the same issue but I get freezes with

- Radeon R9 380 (Tonga)
- MESA 11.1.2
- Linux 4.5-rc4
- amdgpu driver with powerplay enabled

The game usually runs for up to 30 minutes and then freezes unexpectedly.
To rule out hardware defects, I also tested the proprietary fglrx driver which
seems stable.

Steam doesn't print anything unusual on the console.

However after 2 minutes, the kernel reports an unresponsive Xorg process with a
backtrace:

[ 7680.137938] INFO: task Xorg:8367 blocked for more than 120 seconds.
[ 7680.137945]       Tainted: G           O    4.5.0-rc4-desktop #1
[ 7680.137948] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 7680.137952] Xorg            D ffff88043ed542c0     0  8367   8218 0x00000084
[ 7680.137959]  ffff88040d723a38 ffff8800bb922240 0000000000000000
ffffffff813d7879
[ 7680.137964]  ffff88040d724000 ffff88042c804630 ffff88042c800000
0000000000000001
[ 7680.137969]  0000000000000000 ffff8803f651d4c0 ffff88042c806178
ffffffff818ab045
[ 7680.137974] Call Trace:
[ 7680.137985]  [<ffffffff813d7879>] ? __kfifo_in+0x1d/0x25
[ 7680.137992]  [<ffffffff818ab045>] ? schedule+0x7c/0x90
[ 7680.138050]  [<ffffffffa006e9a4>] ? amd_sched_entity_push_job+0x52/0x6b
[amdgpu]
[ 7680.138056]  [<ffffffff810bd286>] ? wait_woken+0x66/0x66
[ 7680.138102]  [<ffffffffa006edd2>] ?
amdgpu_sched_ib_submit_kernel_helper+0xfd/0x170 [amdgpu]
[ 7680.138143]  [<ffffffffa001ad02>] ? amdgpu_gem_prime_export+0x3f/0x3f
[amdgpu]
[ 7680.138184]  [<ffffffffa001b386>] ? amdgpu_vm_bo_update_mapping+0x33f/0x415
[amdgpu]
[ 7680.138226]  [<ffffffffa001bcfe>] ? amdgpu_vm_bo_update+0xe2/0x172 [amdgpu]
[ 7680.138265]  [<ffffffffa0010def>] ? amdgpu_gem_va_update_vm+0x159/0x1aa
[amdgpu]
[ 7680.138306]  [<ffffffffa001c10c>] ? amdgpu_vm_bo_map+0x191/0x329 [amdgpu]
[ 7680.138344]  [<ffffffffa0011cd2>] ? amdgpu_gem_va_ioctl+0x2b2/0x338 [amdgpu]
[ 7680.138382]  [<ffffffffa0011cd2>] ? amdgpu_gem_va_ioctl+0x2b2/0x338 [amdgpu]
[ 7680.138389]  [<ffffffff8149318d>] ? drm_ioctl+0x223/0x353
[ 7680.138392]  [<ffffffff8149318d>] ? drm_ioctl+0x223/0x353
[ 7680.138431]  [<ffffffffa0011a20>] ? amdgpu_gem_metadata_ioctl+0x1ca/0x1ca
[amdgpu]
[ 7680.138436]  [<ffffffff81138c65>] ? unmap_region+0xc3/0xd2
[ 7680.138469]  [<ffffffffa0000046>] ? amdgpu_drm_ioctl+0x46/0x72 [amdgpu]
[ 7680.138474]  [<ffffffff8116ecf5>] ? vfs_ioctl+0x16/0x23
[ 7680.138478]  [<ffffffff8116f1df>] ? do_vfs_ioctl+0x46a/0x513
[ 7680.138483]  [<ffffffff810ff59d>] ? __audit_syscall_entry+0xbe/0xe2
[ 7680.138488]  [<ffffffff8116f2d6>] ? SyS_ioctl+0x4e/0x71
[ 7680.138493]  [<ffffffff818adc57>] ? entry_SYSCALL_64_fastpath+0x12/0x66


[ 7680.138528] INFO: task kworker/u12:12:2299 blocked for more than 120
seconds.
[ 7680.138531]       Tainted: G           O    4.5.0-rc4-desktop #1
[ 7680.138534] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 7680.138536] kworker/u12:12  D ffff88043ec542c0     0  2299      2 0x00000080
[ 7680.138578] Workqueue: amdgpu-pageflip-queue amdgpu_flip_work_func [amdgpu]
[ 7680.138581]  ffff8803251dfca0 ffff88042ddc82c0 000000000000000a
0000000000000490
[ 7680.138586]  ffff8803251e0000 ffff8803251dfd80 ffff88042ddc82c0
0000000000000246
[ 7680.138591]  ffff8804253fe600 ffff8803251dfd90 ffff8803251dfd60
ffffffff818ab045
[ 7680.138595] Call Trace:
[ 7680.138601]  [<ffffffff818ab045>] ? schedule+0x7c/0x90
[ 7680.138606]  [<ffffffff818acf7f>] ? schedule_timeout+0x44/0x1df
[ 7680.138612]  [<ffffffff810b818a>] ? load_balance+0x15c/0x7fe
[ 7680.138617]  [<ffffffff810b22ed>] ? sched_clock_cpu+0xc/0xb0
[ 7680.138623]  [<ffffffff81583514>] ? fence_default_wait+0x109/0x1ac
[ 7680.138628]  [<ffffffff81583514>] ? fence_default_wait+0x109/0x1ac
[ 7680.138633]  [<ffffffff8158303b>] ? fence_free+0xe/0xe
[ 7680.138670]  [<ffffffffa000ea2b>] ? amdgpu_flip_wait_fence+0x32/0xa5
[amdgpu]
[ 7680.138708]  [<ffffffffa000fae3>] ? amdgpu_flip_work_func+0x5d/0x156
[amdgpu]
[ 7680.138714]  [<ffffffff810a4351>] ? process_one_work+0x194/0x29f
[ 7680.138718]  [<ffffffff810a49a6>] ? worker_thread+0x276/0x360
[ 7680.138723]  [<ffffffff810a4730>] ? rescuer_thread+0x2ad/0x2ad
[ 7680.138727]  [<ffffffff810a85bf>] ? kthread+0xc1/0xc9
[ 7680.138731]  [<ffffffff810a84fe>] ? kthread_create_on_node+0x17c/0x17c
[ 7680.138735]  [<ffffffff818adf9f>] ? ret_from_fork+0x3f/0x70
[ 7680.138739]  [<ffffffff810a84fe>] ? kthread_create_on_node+0x17c/0x17c

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