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authorTvrtko Ursulin <tvrtko.ursulin@igalia.com>2024-07-11 14:53:32 +0100
committerMaíra Canal <mcanal@igalia.com>2024-07-13 11:00:31 -0300
commit484de39fa5f5b7bd0c5f2e2c5265167250ef7501 (patch)
tree95704fa17ac5703dcbe658bbe629ebcb7ac5159d /drivers/gpu/drm/v3d/v3d_sched.c
parent753ce4fea62182c77e1691ab4f9022008f25b62e (diff)
drm/v3d: Fix potential memory leak in the performance extension
If fetching of userspace memory fails during the main loop, all drm sync objs looked up until that point will be leaked because of the missing drm_syncobj_put. Fix it by exporting and using a common cleanup helper. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Fixes: bae7cb5d6800 ("drm/v3d: Create a CPU job extension for the reset performance query job") Cc: Maíra Canal <mcanal@igalia.com> Cc: Iago Toral Quiroga <itoral@igalia.com> Cc: stable@vger.kernel.org # v6.8+ Signed-off-by: Maíra Canal <mcanal@igalia.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240711135340.84617-4-tursulin@igalia.com
Diffstat (limited to 'drivers/gpu/drm/v3d/v3d_sched.c')
-rw-r--r--drivers/gpu/drm/v3d/v3d_sched.c22
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/gpu/drm/v3d/v3d_sched.c b/drivers/gpu/drm/v3d/v3d_sched.c
index 59dc0287dab9..5fbbee47c6b7 100644
--- a/drivers/gpu/drm/v3d/v3d_sched.c
+++ b/drivers/gpu/drm/v3d/v3d_sched.c
@@ -87,20 +87,30 @@ v3d_timestamp_query_info_free(struct v3d_timestamp_query_info *query_info,
}
}
+void
+v3d_performance_query_info_free(struct v3d_performance_query_info *query_info,
+ unsigned int count)
+{
+ if (query_info->queries) {
+ unsigned int i;
+
+ for (i = 0; i < count; i++)
+ drm_syncobj_put(query_info->queries[i].syncobj);
+
+ kvfree(query_info->queries);
+ }
+}
+
static void
v3d_cpu_job_free(struct drm_sched_job *sched_job)
{
struct v3d_cpu_job *job = to_cpu_job(sched_job);
- struct v3d_performance_query_info *performance_query = &job->performance_query;
v3d_timestamp_query_info_free(&job->timestamp_query,
job->timestamp_query.count);
- if (performance_query->queries) {
- for (int i = 0; i < performance_query->count; i++)
- drm_syncobj_put(performance_query->queries[i].syncobj);
- kvfree(performance_query->queries);
- }
+ v3d_performance_query_info_free(&job->performance_query,
+ job->performance_query.count);
v3d_job_cleanup(&job->base);
}