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authorHerbert Xu <herbert@gondor.apana.org.au>2020-07-02 13:32:21 +1000
committerHerbert Xu <herbert@gondor.apana.org.au>2020-07-09 18:25:22 +1000
commit662bb52f50bca16a74fe92b487a14d7dccb85e1a (patch)
tree6ffd6265d927924b7bd9cb7be1e9e1cdfe21d76e
parentad6a0664c29c698bfe5c46c49f627af6f5bb172b (diff)
downloadlinux-662bb52f50bca16a74fe92b487a14d7dccb85e1a.tar.bz2
crypto: af_alg - Fix regression on empty requests
Some user-space programs rely on crypto requests that have no control metadata. This broke when a check was added to require the presence of control metadata with the ctx->init flag. This patch fixes the regression by setting ctx->init as long as one sendmsg(2) has been made, with or without a control message. Reported-by: Sachin Sant <sachinp@linux.vnet.ibm.com> Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Fixes: f3c802a1f300 ("crypto: algif_aead - Only wake up when...") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-rw-r--r--crypto/af_alg.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 9fcb91ea10c4..5882ed46f1ad 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -851,6 +851,7 @@ int af_alg_sendmsg(struct socket *sock, struct msghdr *msg, size_t size,
err = -EINVAL;
goto unlock;
}
+ ctx->init = true;
if (init) {
ctx->enc = enc;
@@ -858,7 +859,6 @@ int af_alg_sendmsg(struct socket *sock, struct msghdr *msg, size_t size,
memcpy(ctx->iv, con.iv->iv, ivsize);
ctx->aead_assoclen = con.aead_assoclen;
- ctx->init = true;
}
while (size) {