From 662bb52f50bca16a74fe92b487a14d7dccb85e1a Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 2 Jul 2020 13:32:21 +1000 Subject: [PATCH] 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 Reported-by: Naresh Kamboju Fixes: f3c802a1f300 ("crypto: algif_aead - Only wake up when...") Signed-off-by: Herbert Xu --- crypto/af_alg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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) {