From: Thorsten Blum <thorsten.blum@linux.dev>
Date: Sun, 5 Apr 2026 19:49:41 +0000 (+0200)
Subject: crypto: af_alg - use sock_kmemdup in alg_setkey_by_key_serial
X-Git-Tag: v7.1-rc1~145^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=8879a3c110cb8ca5a69c937643f226697aa551d9;p=thirdparty%2Fkernel%2Flinux.git

crypto: af_alg - use sock_kmemdup in alg_setkey_by_key_serial

Replace sock_kmalloc() followed by memcpy() with sock_kmemdup() to
simplify alg_setkey_by_key_serial().

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 0bb609fbec7d9..b491e5477c700 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -324,15 +324,13 @@ static int alg_setkey_by_key_serial(struct alg_sock *ask, sockptr_t optval,
 		return PTR_ERR(ret);
 	}
 
-	key_data = sock_kmalloc(&ask->sk, key_datalen, GFP_KERNEL);
+	key_data = sock_kmemdup(&ask->sk, ret, key_datalen, GFP_KERNEL);
 	if (!key_data) {
 		up_read(&key->sem);
 		key_put(key);
 		return -ENOMEM;
 	}
 
-	memcpy(key_data, ret, key_datalen);
-
 	up_read(&key->sem);
 	key_put(key);