Am 06.12.18 um 21:55 schrieb Andrey Grodzovsky:
If CS is submitted using guilty ctx, we terminate amdgpu_cs_parser_init
before locking ctx->lock, latter in amdgpu_cs_parser_fini we still are
trying to release the lock just becase parser->ctx != NULL.
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 149b3065..1c49b82 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -125,14 +125,14 @@ static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, union drm_amdgpu_cs
goto free_chunk;
}
+ mutex_lock(&p->ctx->lock);
+
/* skip guilty context job */
if (atomic_read(&p->ctx->guilty) == 1) {
ret = -ECANCELED;
goto free_chunk;
}
- mutex_lock(&p->ctx->lock);
-
/* get chunks */
chunk_array_user = u64_to_user_ptr(cs->in.chunks);
if (copy_from_user(chunk_array, chunk_array_user,
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