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drm/xe: Drop trace_xe_hw_fence_free

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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: 501c4255c4 ("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
This commit is contained in:
Matthew Brost 2024-07-08 14:10:08 -07:00
parent 74e3076800
commit caaf1f44a6
2 changed files with 0 additions and 6 deletions
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1
drivers/gpu/drm/xe/xe_hw_fence.c
View File

@ -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);
}

5
drivers/gpu/drm/xe/xe_trace.h
View File

@ -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),