Quoting Matthew Auld (2020-03-23 11:38:09) > The subtest shrink_boom was added as a regression test for some missing > refcounting on the paging structures, however since the binding is > potentially async, setting the vm->fault_attr might apply to the purge > vma, and not the intended explode vma. Also it looks like it might also > be possible to hit some weird shrinker deadlock where the unbinding of > one vma allocates memory by flushing and waiting for its > still-pending-bind operation while holding vm->mutex, which will always > lands back in the shrinker since we set vm->fault_attr for the selftest. > > References: https://gitlab.freedesktop.org/drm/intel/issues/1493 Ah, you picked the wrong deadlock -- that's the gtt eviction recursion. :( -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
