7e61615857
drm_ht_remove_item() does not handle removing an absent item and the hlist in particular is incorrectly initialised. The easy remedy is simply skip calling i915_gem_free_mmap_offset() unless we have actually created the offset and associated ht entry. This also fixes the mishandling of a partially constructed offset which leaves pointers initialized after freeing them along the i915_gem_create_mmap_offset() error paths. In particular this should fix the oops found here: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/415357/comments/8 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Eric Anholt <eric@anholt.net> Cc: stable@kernel.org |
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