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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - System randomly freezes or crashes to the login screen, glitches until rebooted"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100306#c37">Comment # 37</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - System randomly freezes or crashes to the login screen, glitches until rebooted"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100306">bug 100306</a>
from <span class="vcard"><a class="email" href="mailto:sonichedgehog_hyperblast00@yahoo.com" title="MirceaKitsune <sonichedgehog_hyperblast00@yahoo.com>"> <span class="fn">MirceaKitsune</span></a>
</span></b>
<pre>I briefly discussed the above log (output of "dmesg -w") on IRC with someone
who seemed to have an understanding of the issue. They pointed out something
important which I thought to highlight:
The problem appears to start from 'radeon_vm_bo_invalidate' and is most likely
a GPU locking bug. Looking at the stack trace I can see it, alongside explicit
mentions of spin lock / CPU soft lockup / stall on CPU. I've also noticed a
potentially important message, which although marked as a warning seems to
point to a line of source code from the radeon driver:
[58857.640890] WARNING: CPU: 3 PID: 2549 at
../drivers/gpu/drm/radeon/radeon_object.c:84 radeon_ttm_bo_destroy+0xec/0xf0
[radeon]</pre>
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