* [PATCH] drm/msm/gem: Add missing rcu_dereference()
@ 2024-07-01 21:32 Rob Clark
0 siblings, 0 replies; only message in thread
From: Rob Clark @ 2024-07-01 21:32 UTC (permalink / raw)
To: dri-devel
Cc: freedreno, linux-arm-msm, Rob Clark, kernel test robot, Rob Clark,
Abhinav Kumar, Dmitry Baryshkov, Sean Paul, Marijn Suijten,
David Airlie, Daniel Vetter, open list
From: Rob Clark <robdclark@chromium.org>
Fixes a sparse "different address spaces" error.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202406280050.syeEwLTE-lkp@intel.com/
Signed-off-by: Rob Clark <robdclark@chromium.org>
---
drivers/gpu/drm/msm/msm_gem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index ddc6a131c041..ebc9ba66efb8 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -48,7 +48,7 @@ static void update_ctx_mem(struct drm_file *file, ssize_t size)
uint64_t ctx_mem = atomic64_add_return(size, &ctx->ctx_mem);
rcu_read_lock(); /* Locks file->pid! */
- trace_gpu_mem_total(0, pid_nr(file->pid), ctx_mem);
+ trace_gpu_mem_total(0, pid_nr(rcu_dereference(file->pid)), ctx_mem);
rcu_read_unlock();
}
--
2.45.2
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