https://bugzilla.kernel.org/show_bug.cgi?id=119181

Bug ID: 119181 Summary: Hang in amdgpu_vm_bo_update_mapping with powerplay enabled Product: Drivers Version: 2.5 Kernel Version: 4.5.4 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: mustrumr97@gmail.com Regression: No

Created attachment 218111 --> https://bugzilla.kernel.org/attachment.cgi?id=218111&action=edit Stack trace (sysrq-w)

This happens after a few minutes in a 3D-intensive workload (e.g. Kerbal Space Program). The game hangs, but the mouse is moving. A few seconds later the mouse stops moving.

1. The game is waiting on an ioctl (libdrm: amdgpu_fence_wait/amdgpu_cs_query_fence_status) 2. Xorg is in D state (see attached stack trace). 3. CPU load at ~0%. 4. Nothing interesting in kernel log.

The kernel has voluntary preemption enabled, the GPU is 1002:6938 (AMD Radeon 380X). It is at 56°C, quickly drops down to 51 when forced to low performance state, goes up to 56 when at auto.