Re: [PATCH] drm/sched: Fix a use-after-free when tracing the scheduler.

Am 03.12.18 um 21:14 schrieb Eric Anholt: > With DEBUG_SLAB (poisoning on free) enabled, I could quickly produce > an oops when tracing V3D. Good catch, but the solution is a clear NAK. drm_sched_entity_add_dependency_cb() can result in setting entity->dependency to NULL. That in turn can lead t

[PATCH] drm/sched: Fix a use-after-free when tracing the scheduler.

With DEBUG_SLAB (poisoning on free) enabled, I could quickly produce an oops when tracing V3D. Signed-off-by: Eric Anholt --- I think this patch is correct (though maybe a bigger refactor could avoid the extra get/put?), but I've still got this with "vblank_mode=0 perf record -a -e v3d:.\* -e gp