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 <[email protected]> Reported-by: Naresh Kamboju <[email protected]> Fixes: f3c802a ("crypto: algif_aead - Only wake up when...") Signed-off-by: Herbert Xu <[email protected]>
wafgo · Jul 9, 2020 · 662bb52 · 662bb52
1 parent ad6a066
commit 662bb52
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/crypto/af_alg.c b/crypto/af_alg.c
@@ -851,14 +851,14 @@ 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;
 		if (con.iv)
 			memcpy(ctx->iv, con.iv->iv, ivsize);
 
 		ctx->aead_assoclen = con.aead_assoclen;
-		ctx->init = true;
 	}
 
 	while (size) {