[PATCH v2 1/2] drm/v3d: cleanup BOs properly when lookup_bos fails
From: Melissa Wen
Date: Mon Dec 05 2022 - 08:56:41 EST
When v3d_lookup_bos fails to `allocate validated BO pointers`,
job->bo_count was already set to args->bo_count, but job->bo points to
NULL. In this scenario, we must verify that job->bo is not NULL before
iterating on it to proper clean up a job. Also, drm_gem_object_put
already checks that the object passed is not NULL, doing the job->bo[i]
checker redundant.
Signed-off-by: Melissa Wen <mwen@xxxxxxxxxx>
---
drivers/gpu/drm/v3d/v3d_gem.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/v3d/v3d_gem.c b/drivers/gpu/drm/v3d/v3d_gem.c
index 96af1cb5202a..31a37572c11d 100644
--- a/drivers/gpu/drm/v3d/v3d_gem.c
+++ b/drivers/gpu/drm/v3d/v3d_gem.c
@@ -363,11 +363,11 @@ v3d_job_free(struct kref *ref)
struct v3d_job *job = container_of(ref, struct v3d_job, refcount);
int i;
- for (i = 0; i < job->bo_count; i++) {
- if (job->bo[i])
+ if (job->bo) {
+ for (i = 0; i < job->bo_count; i++)
drm_gem_object_put(job->bo[i]);
+ kvfree(job->bo);
}
- kvfree(job->bo);
dma_fence_put(job->irq_fence);
dma_fence_put(job->done_fence);
--
2.35.1