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drm/v3d: Validate passed in drm syncobj handles in the performance extension

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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@igalia.com>
Fixes: bae7cb5d68 ("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+
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240711135340.84617-6-tursulin@igalia.com
(cherry picked from commit a546b7e4d7)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
This commit is contained in:
Tvrtko Ursulin 2024-07-11 14:53:34 +01:00 committed by Thomas Zimmermann
parent 023d22e8bb
commit 4ecc24a84d
1 changed files with 8 additions and 0 deletions
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8
drivers/gpu/drm/v3d/v3d_submit.c
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@ -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;