From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxx>
If userspace provides an unknown or invalid handle anywhere in the handle
array the rest of the driver will not handle that well.
Fix it by checking handle was looked up successfully or otherwise fail the
extension by jumping into the existing unwind.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxx>
Fixes: bae7cb5d6800 ("drm/v3d: Create a CPU job extension for the reset performance query job")
Cc: Maíra Canal <mcanal@xxxxxxxxxx>
Cc: Iago Toral Quiroga <itoral@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v6.8+
Reviewed-by: Maíra Canal <mcanal@xxxxxxxxxx>
---
drivers/gpu/drm/v3d/v3d_submit.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/v3d/v3d_submit.c b/drivers/gpu/drm/v3d/v3d_submit.c
index 9a3e32075ebe..4cdfabbf4964 100644
--- a/drivers/gpu/drm/v3d/v3d_submit.c
+++ b/drivers/gpu/drm/v3d/v3d_submit.c
@@ -710,6 +710,10 @@ v3d_get_cpu_reset_performance_params(struct drm_file *file_priv,
}
job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync);
+ if (!job->performance_query.queries[i].syncobj) {
+ err = -ENOENT;
+ goto error;
+ }
}
job->performance_query.count = reset.count;
job->performance_query.nperfmons = reset.nperfmons;
@@ -790,6 +794,10 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv,
}
job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync);
+ if (!job->performance_query.queries[i].syncobj) {
+ err = -ENOENT;
+ goto error;
+ }
}
job->performance_query.count = copy.count;
job->performance_query.nperfmons = copy.nperfmons;
--
2.44.0
