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authorHerbert Xu <herbert@gondor.apana.org.au>2020-05-29 14:54:43 +1000
committerHerbert Xu <herbert@gondor.apana.org.au>2020-06-15 17:38:53 +1000
commit7cf81954705b7e5b057f7dc39a7ded54422ab6e1 (patch)
tree547e14b1687a3d8984e46884b6c01138648ec844
parent95459261c99f1621d90bc628c2a48e60b7cf9a88 (diff)
downloadlinux-7cf81954705b7e5b057f7dc39a7ded54422ab6e1.tar.bz2
crypto: algif_skcipher - Cap recv SG list at ctx->used
Somewhere along the line the cap on the SG list length for receive was lost. This patch restores it and removes the subsequent test which is now redundant. Fixes: 2d97591ef43d ("crypto: af_alg - consolidation of...") Cc: <stable@vger.kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Reviewed-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-rw-r--r--crypto/algif_skcipher.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
index e2c8ab408bed..4c3bdffe0c3a 100644
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -74,14 +74,10 @@ static int _skcipher_recvmsg(struct socket *sock, struct msghdr *msg,
return PTR_ERR(areq);
/* convert iovecs of output buffers into RX SGL */
- err = af_alg_get_rsgl(sk, msg, flags, areq, -1, &len);
+ err = af_alg_get_rsgl(sk, msg, flags, areq, ctx->used, &len);
if (err)
goto free;
- /* Process only as much RX buffers for which we have TX data */
- if (len > ctx->used)
- len = ctx->used;
-
/*
* If more buffers are to be expected to be processed, process only
* full block size buffers.