From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxx>
commit 4ecc24a84d7e0254efd150ec23e0b89638386516 upstream.
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>
Signed-off-by: Maíra Canal <mcanal@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240711135340.84617-6-tursulin@xxxxxxxxxx
(cherry picked from commit a546b7e4d73c23838d7e4d2c92882b3ca902d213)
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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;
--
2.46.0
Patches currently in stable-queue which might be from tvrtko.ursulin@xxxxxxxxxx are
queue-6.10/drm-v3d-validate-passed-in-drm-syncobj-handles-in-the-performance-extension.patch
queue-6.10/drm-v3d-prevent-out-of-bounds-access-in-performance-query-extensions.patch
queue-6.10/drm-v3d-validate-passed-in-drm-syncobj-handles-in-the-timestamp-extension.patch
queue-6.10/drm-v3d-fix-potential-memory-leak-in-the-timestamp-extension.patch
queue-6.10/drm-v3d-fix-potential-memory-leak-in-the-performance-extension.patch
