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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Unable to cleanly unload kernel module: BUG: unable to handle kernel NULL pointer dereference at 0000000000000258 (mutex_lock)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104274#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Unable to cleanly unload kernel module: BUG: unable to handle kernel NULL pointer dereference at 0000000000000258 (mutex_lock)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104274">bug 104274</a>
from <span class="vcard"><a class="email" href="mailto:mikita.lipski@amd.com" title="mikita.lipski@amd.com <mikita.lipski@amd.com>"> <span class="fn">mikita.lipski@amd.com</span></a>
</span></b>
<pre>Encountering a deadlock in DRM while trying to force disable CRTCs.
If no displays connected - system hard hangs.
If DC is disabled (any number of displays) - system hard hangs.
Currently investigating the deadlock issue.
Thanks</pre>
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