[Bug 110913] [CI][SHARDS] Igt@* - dmesg-warn - WARNING: possible circular locking dependency detected

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Jun 26 14:44:36 UTC 2019


https://bugs.freedesktop.org/show_bug.cgi?id=110913

--- Comment #7 from Jani Nikula <jani.nikula at intel.com> ---
IRC discussion on this:

 16:12            j4ni   ickle: so 33df8a7697a0 ("drm/i915: Prevent lock-cycles
between GPU waits and GPU resets") adds extra lockdep annotation, which
uncovers an actual existing bug?
 16:12           ickle   yes
 16:12            j4ni   and in that sense, the lockdep splat is expected
 16:12           ickle   it's a valid but unlikely warning
 16:16            j4ni   looking at
https://bugs.freedesktop.org/show_bug.cgi?id=110913 and a random sample of the
referenced logs, I can't find a lockdep splat that does *not* contain 
                         "i915.reset"
 16:17            j4ni   i.e. where are the other bugs?
 16:18           ickle   danvet is worried that CI might be misattributing bugs
in pre-merge
 16:18            j4ni   right, so that hasn't actually happened yet
 16:19            j4ni   but alas it's bound to happen

We need to adjust the CI Bug Log filter to not conflate all lockdep warnings
into one, and instead identify just the new warning added by the commit
referenced above.

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