| Message ID | 1420327880-25415-1-git-send-email-khoroshilov@ispras.ru (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/gpu/drm/radeon/radeon_kfd.c b/drivers/gpu/drm/radeon/radeon_kfd.c index 242fd8b1b221..335e29dbab05 100644 --- a/drivers/gpu/drm/radeon/radeon_kfd.c +++ b/drivers/gpu/drm/radeon/radeon_kfd.c @@ -556,6 +556,7 @@ static int kgd_hqd_destroy(struct kgd_dev *kgd, uint32_t reset_type, if (timeout == 0) { pr_err("kfd: cp queue preemption time out (%dms)\n", temp); + release_queue(kgd); return -ETIME; } msleep(20);
If timeout happens, kgd_hqd_destroy() just returns -ETIME leaving queue acquired. It may cause a deadlock, so the patch proposes to release queue before return. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> --- drivers/gpu/drm/radeon/radeon_kfd.c | 1 + 1 file changed, 1 insertion(+)