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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [GM45 regression] GPU hang during disk io"
href="https://bugs.freedesktop.org/show_bug.cgi?id=57136#c42">Comment # 42</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [GM45 regression] GPU hang during disk io"
href="https://bugs.freedesktop.org/show_bug.cgi?id=57136">bug 57136</a>
from <span class="vcard"><a class="email" href="mailto:selinux@gmail.com" title="Tom London <selinux@gmail.com>"> <span class="fn">Tom London</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=72801" name="attach_72801" title="tar.gz included 'dmesg', i915_error_state, etc.">attachment 72801</a> <a href="attachment.cgi?id=72801&action=edit" title="tar.gz included 'dmesg', i915_error_state, etc.">[details]</a></span>
tar.gz included 'dmesg', i915_error_state, etc.
kernel with just the one patch (remove-MI_FLUSH) hangs/crashes under my "cat
big-files >/dev/null" test.
Here is the dmesg spew:
[ 178.704031] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU
hung
[ 178.704039] [drm] capturing error event; look for more information in
/debug/dri/0/i915_error_state
[ 188.704040] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU
hung
[ 188.757040] [drm:init_ring_common] *ERROR* render ring initialization failed
ctl 0001f001 head 00003000 tail 00000000 start 00003000
[ 190.704040] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU
hung
[ 190.704160] [drm:i915_reset] *ERROR* GPU hanging too fast, declaring wedged!
[ 190.704163] [drm:i915_reset] *ERROR* Failed to reset chip.
[ 201.972860] gnome-shell[1927]: segfault at 230 ip 00007fbcbf78989f sp
00007fff8ae7ac00 error 4 in i965_dri.so[7fbcbf737000+b3000]
Here are the first few lines from i915_error_state:
Time: 1357847009 s 606144 us
PCI ID: 0x2a42
EIR: 0x00000000
IER: 0x02028c53
PGTBL_ER: 0x00000000
CCID: 0x00000000
fence[0] = 00000000
fence[1] = 00000000
fence[2] = 00000000
Hope this helps....</pre>
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