diff options
| author | Min Li <[email protected]> | 2023-03-28 17:36:27 +0800 |
|---|---|---|
| committer | Tvrtko Ursulin <[email protected]> | 2023-03-29 10:18:52 +0100 |
| commit | 49f6f6483b652108bcb73accd0204a464b922395 (patch) | |
| tree | 545ac1655b50f20d05a56f453b830a967f5cfb2a /tools/perf/scripts/python/arm-cs-trace-disasm.py | |
| parent | b7d70b8b06edf25c4b7526e20f5b3d11175cab81 (diff) | |
drm/i915: fix race condition UAF in i915_perf_add_config_ioctl
Userspace can guess the id value and try to race oa_config object creation
with config remove, resulting in a use-after-free if we dereference the
object after unlocking the metrics_lock. For that reason, unlocking the
metrics_lock must be done after we are done dereferencing the object.
Signed-off-by: Min Li <[email protected]>
Fixes: f89823c21224 ("drm/i915/perf: Implement I915_PERF_ADD/REMOVE_CONFIG interface")
Cc: <[email protected]> # v4.14+
Reviewed-by: Andi Shyti <[email protected]>
Reviewed-by: Umesh Nerlige Ramappa <[email protected]>
Signed-off-by: Tvrtko Ursulin <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
[tursulin: Manually added stable tag.]
Diffstat (limited to 'tools/perf/scripts/python/arm-cs-trace-disasm.py')
0 files changed, 0 insertions, 0 deletions