[Bug 111891] [CI][SHARDS] igt at gem_mmap_gtt@basic-small-copy|igt at gem_exec_basic@gtt-rcs0| - dmesg-warn - WARNING: possible circular locking dependency detected

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Oct 3 11:16:17 UTC 2019


https://bugs.freedesktop.org/show_bug.cgi?id=111891

--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
This one is particularly nasty here due to the inclusive of the ggtt->mutex
from using the aliasing-ppgtt. That means we cannot simply break the cycle by
removing struct_mutex and then only using full-ppgtt vma for userptr.

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