From: Herbert Xu herbert@gondor.apana.org.au
commit b257b48cd5830c5b1d0c347eb281f9c28056f881 upstream.
When we perform a walk in the completion function, we need to ensure that it is atomic.
Fixes: ac3c8f36c31d ("crypto: lrw - Do not use auxiliary buffer") Cc: stable@vger.kernel.org Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Acked-by: Ondrej Mosnacek omosnace@redhat.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- crypto/lrw.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
--- a/crypto/lrw.c +++ b/crypto/lrw.c @@ -212,8 +212,12 @@ static void crypt_done(struct crypto_asy { struct skcipher_request *req = areq->data;
- if (!err) + if (!err) { + struct rctx *rctx = skcipher_request_ctx(req); + + rctx->subreq.base.flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; err = xor_tweak_post(req); + }
skcipher_request_complete(req, err); }