On 7/10/24 10:41, Tvrtko Ursulin wrote:
From: Tvrtko Ursulin tvrtko.ursulin@igalia.com
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"
Missing ) at the end of Fixes.
Cc: Maíra Canal mcanal@igalia.com Cc: Iago Toral Quiroga itoral@igalia.com Cc: stable@vger.kernel.org # v6.8+
drivers/gpu/drm/v3d/v3d_drv.h | 2 ++ drivers/gpu/drm/v3d/v3d_sched.c | 22 +++++++++++++----- drivers/gpu/drm/v3d/v3d_submit.c | 40 +++++++++++++++++++++----------- 3 files changed, 44 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h index 95651c3c926f..38c80168da51 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.h +++ b/drivers/gpu/drm/v3d/v3d_drv.h @@ -565,6 +565,8 @@ void v3d_mmu_remove_ptes(struct v3d_bo *bo); /* v3d_sched.c */ void __v3d_timestamp_query_info_free(struct v3d_timestamp_query_info *qinfo, unsigned int count); +void __v3d_performance_query_info_free(struct v3d_performance_query_info *qinfo,
unsigned int count);
Same nits from the previous patch.
void v3d_job_update_stats(struct v3d_job *job, enum v3d_queue queue); int v3d_sched_init(struct v3d_dev *v3d); void v3d_sched_fini(struct v3d_dev *v3d); diff --git a/drivers/gpu/drm/v3d/v3d_sched.c b/drivers/gpu/drm/v3d/v3d_sched.c index e45d3ddc6f82..173801aa54ee 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 *qinfo, } } +void +__v3d_performance_query_info_free(struct v3d_performance_query_info *qinfo,
unsigned int count)+{
- if (qinfo->queries) {
unsigned int i;for (i = 0; i < count; i++)drm_syncobj_put(qinfo->queries[i].syncobj);kvfree(qinfo->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); } diff --git a/drivers/gpu/drm/v3d/v3d_submit.c b/drivers/gpu/drm/v3d/v3d_submit.c index 2818afdd4807..ca1b1ad0a75c 100644 --- a/drivers/gpu/drm/v3d/v3d_submit.c +++ b/drivers/gpu/drm/v3d/v3d_submit.c @@ -637,6 +637,7 @@ v3d_get_cpu_reset_performance_params(struct drm_file *file_priv, u32 __user *syncs; u64 __user *kperfmon_ids; struct drm_v3d_reset_performance_query reset;
- int err;
if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -672,32 +673,36 @@ v3d_get_cpu_reset_performance_params(struct drm_file *file_priv, u32 id; if (copy_from_user(&sync, syncs++, sizeof(sync))) {
kvfree(job->performance_query.queries);return -EFAULT;
err = -EFAULT;goto error;
job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync);- if (copy_from_user(&ids, kperfmon_ids++, sizeof(ids))) {
kvfree(job->performance_query.queries);return -EFAULT;
err = -EFAULT;goto error;ids_pointer = u64_to_user_ptr(ids); for (int j = 0; j < reset.nperfmons; j++) { if (copy_from_user(&id, ids_pointer++, sizeof(id))) {
kvfree(job->performance_query.queries);return -EFAULT;
err = -EFAULT;goto error; }job->performance_query.queries[i].kperfmon_ids[j] = id; }
job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync);return 0;
+error > + __v3d_performance_query_info_free(qinfo, i);
I miss the declaration of `qinfo`.
- return err; }
static int @@ -708,6 +713,7 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv, u32 __user *syncs; u64 __user *kperfmon_ids; struct drm_v3d_copy_performance_query copy;
- int err;
if (!job) { DRM_DEBUG("CPU job extension was attached to a GPU job.\n"); @@ -746,27 +752,29 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv, u32 id; if (copy_from_user(&sync, syncs++, sizeof(sync))) {
kvfree(job->performance_query.queries);return -EFAULT;
err = -EFAULT;goto error;job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync);
I believe this line should be deleted as it is introduced later in this patch.
if (copy_from_user(&ids, kperfmon_ids++, sizeof(ids))) {
kvfree(job->performance_query.queries);return -EFAULT;
err = -EFAULT;goto error;ids_pointer = u64_to_user_ptr(ids); for (int j = 0; j < copy.nperfmons; j++) { if (copy_from_user(&id, ids_pointer++, sizeof(id))) {
kvfree(job->performance_query.queries);return -EFAULT;
err = -EFAULT;goto error; }job->performance_query.queries[i].kperfmon_ids[j] = id; }
job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync);@@ -779,6 +787,10 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv, job->copy.stride = copy.stride; return 0;
+error:
- __v3d_performance_query_info_free(qinfo, i);
Missing declaration of `qinfo`.
Best Regards, - Maíra
- return err; }
/* Whenever userspace sets ioctl extensions, v3d_get_extensions parses data