[Bug 97543] New: ChromeOS locks up, never recovers gracefully.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97543

            Bug ID: 97543
           Summary: ChromeOS locks up, never recovers gracefully.
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: other
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: paul.kasper at logicsupply.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 126121
  --> https://bugs.freedesktop.org/attachment.cgi?id=126121&action=edit
Error from /sys/class/drm/card0/error

ChromeOS on an Acer Chromebase 24 (2016) will lock up while video conferencing
on a  Jitsi Meet session.  The screen usually goes black, and does not recover
gracefully.  

Moving into Developer Mode and recreating the issue, we can find the message
logs attached as well as the error log from /sys/class/drm/card0/error.  

This is reproducible on two Chromebases, but does not occur on a third of the
same model (purchased in a different country).  All are on the latest ChromeOS
version as of 08-30-2016.


2016-08-30T13:48:30.243258-04:00 INFO kernel: [  981.120682] [drm] stuck on bsd
ring
2016-08-30T13:48:30.243278-04:00 INFO kernel: [  981.120698] [drm] GPU crash
dump saved to /sys/class/drm/card0/error
2016-08-30T13:48:30.243284-04:00 INFO kernel: [  981.120709] [drm] GPU hangs
can indicate a bug anywhere in the entire gfx stack, including userspace.
2016-08-30T13:48:30.243288-04:00 INFO kernel: [  981.120723] [drm] Please file
a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
2016-08-30T13:48:30.243292-04:00 INFO kernel: [  981.120737] [drm] drm/i915
developers can then reassign to the right component if it's not a kernel issue.
2016-08-30T13:48:30.243295-04:00 INFO kernel: [  981.120751] [drm] The gpu
crash dump is required to analyze gpu hangs, so please always attach it.
2016-08-30T13:48:30.281906-04:00 INFO crash_reporter[18077]: Consent given -
collect udev crash info.
2016-08-30T13:48:32.242320-04:00 INFO kernel: [  983.121897] [drm] RC6 on
2016-08-30T13:48:35.209770-04:00 INFO crash_reporter[18077]: Log command " 
echo "===i915/parameters===";   grep '' /sys/module/i915/parameters/* |     sed
-e 's!^/sys/module/i915/parameters/!!';   for dri in /sys/kernel/debug/dri/*;
do 
    echo "===$dri/i915_error_state===";     cat $dri/i915_error_state;     echo
"===$dri/i915_capabilities===";     cat $dri/i915_capabilities;     echo
"===$dri/i915_wa_registers===";     cat $dri/i915_wa_registers;   done" exited
with 
1
2016-08-30T13:48:35.209791-04:00 ERR crash_reporter[18077]: Error reading udev
log info crash_reporter-udev-collection-change-card0-drm
2016-08-30T13:48:36.242810-04:00 INFO kernel: [  987.123183] [drm] stuck on
render ring
2016-08-30T13:48:36.263945-04:00 INFO crash_reporter[18101]: Consent given -
collect udev crash info.


2016-08-30T13:49:09.282118-04:00 INFO kernel: [ 1020.176626] Watchdog[2489]:
segfault at 0 ip 00007fb896f4fbe3 sp 00007fb892b1e6e0 error 6 in
chrome[7fb895a8d000+6585000]
2016-08-30T13:49:09.299459-04:00 WARNING crash_reporter[18223]: [user] Received
crash notification for chrome[2436] sig 11, user 1000 (ignoring call by kernel
- chrome crash; waiting for chrome to call us directly)
2016-08-30T13:49:09.310131-04:00 WARNING crash_reporter[18225]: Received crash
notification for chrome[2436] user 1000 (called directly)

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