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| author | Matthew Brost <matthew.brost@intel.com> | 2024-07-08 14:10:08 -0700 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2024-07-11 09:54:24 -0400 |
| commit | 26d289158e491d5ae34b10eab40b093a40fab7d7 (patch) | |
| tree | 5ef45975f10fa25624b48ff5703e940c1cc5e755 /drivers/gpu | |
| parent | 63347fe031e3bd738a2a16aee8eba889376e49a8 (diff) | |
| download | lwn-26d289158e491d5ae34b10eab40b093a40fab7d7.tar.gz lwn-26d289158e491d5ae34b10eab40b093a40fab7d7.zip | |
drm/xe: Drop trace_xe_hw_fence_free
fence->ctx may be stale memory when trace_xe_hw_fence_free is called
resuling UAF bug when deriving the device name. This tracepoint is not
all that useful, so just drop it.
Fixes: 501c4255c409 ("drm/xe/trace: Print device_id in xe_trace events")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Gustavo Sousa <gustavo.sousa@intel.com>
Cc: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240708211008.956384-1-matthew.brost@intel.com
(cherry picked from commit caaf1f44a6a27bae33eee189842c4d8fc21c3b02)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_hw_fence.c | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_trace.h | 5 |
2 files changed, 0 insertions, 6 deletions
diff --git a/drivers/gpu/drm/xe/xe_hw_fence.c b/drivers/gpu/drm/xe/xe_hw_fence.c index 35c0063a831a..45a9789cf501 100644 --- a/drivers/gpu/drm/xe/xe_hw_fence.c +++ b/drivers/gpu/drm/xe/xe_hw_fence.c @@ -187,7 +187,6 @@ static void xe_hw_fence_release(struct dma_fence *dma_fence) { struct xe_hw_fence *fence = to_xe_hw_fence(dma_fence); - trace_xe_hw_fence_free(fence); XE_WARN_ON(!list_empty(&fence->irq_link)); call_rcu(&dma_fence->rcu, fence_free); } diff --git a/drivers/gpu/drm/xe/xe_trace.h b/drivers/gpu/drm/xe/xe_trace.h index 09ca1ad057b0..baba14fb1e32 100644 --- a/drivers/gpu/drm/xe/xe_trace.h +++ b/drivers/gpu/drm/xe/xe_trace.h @@ -341,11 +341,6 @@ DEFINE_EVENT(xe_hw_fence, xe_hw_fence_try_signal, TP_ARGS(fence) ); -DEFINE_EVENT(xe_hw_fence, xe_hw_fence_free, - TP_PROTO(struct xe_hw_fence *fence), - TP_ARGS(fence) -); - TRACE_EVENT(xe_reg_rw, TP_PROTO(struct xe_gt *gt, bool write, u32 reg, u64 val, int len), |