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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2020-07-31 17:03:50 +1000 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-08-21 14:45:27 +1000 |
| commit | cbdad1f246dd98e6c9c32a6e5212337f542aa7e0 (patch) | |
| tree | 538a0d1241b79ed6a921c5d43fa1cf45c1ba5b25 /crypto | |
| parent | 2a05b029c1ee045b886ebf9efef9985ca23450de (diff) | |
| download | lwn-cbdad1f246dd98e6c9c32a6e5212337f542aa7e0.tar.gz lwn-cbdad1f246dd98e6c9c32a6e5212337f542aa7e0.zip | |
crypto: algif_aead - Do not set MAY_BACKLOG on the async path
The async path cannot use MAY_BACKLOG because it is not meant to
block, which is what MAY_BACKLOG does. On the other hand, both
the sync and async paths can make use of MAY_SLEEP.
Fixes: 83094e5e9e49 ("crypto: af_alg - add async support to...")
Cc: <stable@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/algif_aead.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/crypto/algif_aead.c b/crypto/algif_aead.c index 54f2fb2c6535..42493b4d8ce4 100644 --- a/crypto/algif_aead.c +++ b/crypto/algif_aead.c @@ -78,7 +78,7 @@ static int crypto_aead_copy_sgl(struct crypto_sync_skcipher *null_tfm, SYNC_SKCIPHER_REQUEST_ON_STACK(skreq, null_tfm); skcipher_request_set_sync_tfm(skreq, null_tfm); - skcipher_request_set_callback(skreq, CRYPTO_TFM_REQ_MAY_BACKLOG, + skcipher_request_set_callback(skreq, CRYPTO_TFM_REQ_MAY_SLEEP, NULL, NULL); skcipher_request_set_crypt(skreq, src, dst, len, NULL); @@ -291,19 +291,20 @@ static int _aead_recvmsg(struct socket *sock, struct msghdr *msg, areq->outlen = outlen; aead_request_set_callback(&areq->cra_u.aead_req, - CRYPTO_TFM_REQ_MAY_BACKLOG, + CRYPTO_TFM_REQ_MAY_SLEEP, af_alg_async_cb, areq); err = ctx->enc ? crypto_aead_encrypt(&areq->cra_u.aead_req) : crypto_aead_decrypt(&areq->cra_u.aead_req); /* AIO operation in progress */ - if (err == -EINPROGRESS || err == -EBUSY) + if (err == -EINPROGRESS) return -EIOCBQUEUED; sock_put(sk); } else { /* Synchronous operation */ aead_request_set_callback(&areq->cra_u.aead_req, + CRYPTO_TFM_REQ_MAY_SLEEP | CRYPTO_TFM_REQ_MAY_BACKLOG, crypto_req_done, &ctx->wait); err = crypto_wait_req(ctx->enc ? |