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crypto: algif_aead - Do not set MAY_BACKLOG on the async path

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commit cbdad1f246dd98e6c9c32a6e5212337f542aa7e0 upstream.

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: 83094e5e9e ("crypto: af_alg - add async support to...")
Cc: <stable@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Herbert Xu
2020-07-31 17:03:50 +10:00
committed by Greg Kroah-Hartman
parent ff0ad9d345
commit f46af0e089
1 changed files with 2 additions and 2 deletions
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4
crypto/algif_aead.c
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@@ -455,7 +455,7 @@ static int aead_recvmsg_async(struct socket *sock, struct msghdr *msg,
memcpy(areq->iv, ctx->iv, crypto_aead_ivsize(tfm));
aead_request_set_tfm(req, tfm);
aead_request_set_ad(req, ctx->aead_assoclen);
aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP,
aead_async_cb, req);
used -= ctx->aead_assoclen;
@@ -925,7 +925,7 @@ static int aead_accept_parent_nokey(void *private, struct sock *sk)
ask->private = ctx;
aead_request_set_tfm(&ctx->aead_req, aead);
aead_request_set_callback(&ctx->aead_req, CRYPTO_TFM_REQ_MAY_BACKLOG,
aead_request_set_callback(&ctx->aead_req, CRYPTO_TFM_REQ_MAY_SLEEP,
af_alg_complete, &ctx->completion);
sk->sk_destruct = aead_sock_destruct;