From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxx> When we had to quickly deal with a tree build issue via merging 792d16b5375d ("drm/v3d: Move perfmon init completely into own unit"), we promised to follow up with a nicer solution. As in the process of eliminating the hardcoded defines we have discovered a few issues in handling of corner cases and userspace input validation, the fix has turned into a larger series, but hopefully the end result is a justifiable cleanup. v2: * Re-order the patches so fixes come first while last three are optional cleanups. Tvrtko Ursulin (12): drm/v3d: Prevent out of bounds access in performance query extensions drm/v3d: Fix potential memory leak in the timestamp extension drm/v3d: Fix potential memory leak in the performance extension drm/v3d: Validate passed in drm syncobj handles in the timestamp extension drm/v3d: Validate passed in drm syncobj handles in the performance extension drm/v3d: Move part of copying of reset/copy performance extension to a helper drm/v3d: Size the kperfmon_ids array at runtime drm/v3d: Do not use intermediate storage when copying performance query results drm/v3d: Move perfmon init completely into own unit drm/v3d: Align data types of internal and uapi counts drm/v3d: Add some local variables in queries/extensions drm/v3d: Prefer get_user for scalar types drivers/gpu/drm/v3d/v3d_drv.c | 9 +- drivers/gpu/drm/v3d/v3d_drv.h | 16 +- drivers/gpu/drm/v3d/v3d_perfmon.c | 44 +-- .../gpu/drm/v3d/v3d_performance_counters.h | 16 +- drivers/gpu/drm/v3d/v3d_sched.c | 106 ++++--- drivers/gpu/drm/v3d/v3d_submit.c | 285 ++++++++++-------- 6 files changed, 281 insertions(+), 195 deletions(-) -- 2.44.0