crypto: engine - check if BH is disabled during completion

[ Upstream commit 4058cf08945c18a6de193f4118fd05d83d3d4285 ]

When doing iperf over ipsec with crypto hardware sun8i-ce, I hit some
spinlock recursion bug.

This is due to completion function called with enabled BH.

Add check a to detect this.

Fixes: 735d37b5424b ("crypto: engine - Introduce the block request crypto engine framework")
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Stable-dep-of: 4140aafcff16 ("crypto: engine - fix crypto_queue backlog handling")
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/crypto/crypto_engine.c b/crypto/crypto_engine.c
index cff21f4e03e3214052dfd652583f1e51ab2a1809..fecf6baaa4f7daa21f70dcb181f17cc51681ec8c 100644 (file)
--- a/crypto/crypto_engine.c
+++ b/crypto/crypto_engine.c
@@ -53,6 +53,7 @@ static void crypto_finalize_request(struct crypto_engine *engine,
                                dev_err(engine->dev, "failed to unprepare request\n");
                }
        }
+       lockdep_assert_in_softirq();
        req->complete(req, err);
 
        kthread_queue_work(engine->kworker, &engine->pump_requests);