https://bugs.freedesktop.org/show_bug.cgi?id=100614

Bug ID: 100614 Summary: GPU HANG: ecode 9:0:0xef9ffffd, in chrome [1777], reason: Ring hung, action: reset Product: Mesa Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: major Priority: medium Component: Drivers/DRI/i915 Assignee: dri-devel@lists.freedesktop.org Reporter: ravi4tablet@gmail.com QA Contact: dri-devel@lists.freedesktop.org

Created attachment 130752 --> https://bugs.freedesktop.org/attachment.cgi?id=130752&action=edit GPU crash dump saved to /sys/class/drm/card0/error

Encountered GPU hang on Chromebook while doing Google hangouts + video(youtube) + few (5) tabs opened simultaneously. Reproducility is nearly 20% but requires overnight to reproduce this issue.

GPU crash dump saved to /sys/class/drm/card0/error and logs are attached.

Kernel log says: 2017-03-26T15:51:27.709098-07:00 INFO kernel: [ 8104.736419] [drm] stuck on render ring 2017-03-26T15:51:27.709145-07:00 INFO kernel: [ 8104.737420] [drm] GPU HANG: ecode 9:0:0xef9ffffd, in chrome [1869], reason: Ring hung, action: reset 2017-03-26T15:51:27.709150-07:00 INFO kernel: [ 8104.737439] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.

Few more details:

From "change_card0_drm.20170406.193114.0.log" attachment, I saw it suffered GPU

command (MI_STORE_DATA_IMM) blocked in render ring and guess some batch buffers from mesa cause this issue. ... 0x01028a90: 0x7a000004: PIPE_CONTROL: no write, no depth stall, no RC write flush, no inst flush 0x01028a94: 0x00101001: destination address 0x01028a98: 0x00000080: immediate dword low 0x01028a9c: 0x00000000: immediate dword high 0x01028aa8: 0x10400002: MI_STORE_DATA_IMM <------------blocked 0x01028aac: 0x000020c0: dword 1 0x01028ab0: 0x00000000: dword 2 0x01028ab4: 0x0014d95b: dword 3 0x01028ab8: 0x01000000: MI_USER_INTERRUPT 0x01028abc: 0x00000000: MI_NOOP 0x01028ac0: 0x00000000: MI_NOOP 0x01028ac4: 0x00000000: MI_NOOP 0x01028ac8: 0x7a000004: PIPE_CONTROL: no write, no depth stall, no RC write flush, no inst flush 0x01028acc: 0x00000000: destination address 0x01028ad0: 0x00000000: immediate dword low 0x01028ad4: 0x00000000: immediate dword high

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