wireguard: allowedips: initialize list head in selftest

stable inclusion
from stable-5.10.43
commit 42a667715b1e118f725de85ac748983ced2ecb5e
bugzilla: 109284
CVE: NA

--------------------------------

commit 46cfe8ee upstream.

The randomized trie tests weren't initializing the dummy peer list head,
resulting in a NULL pointer dereference when used. Fix this by
initializing it in the randomized trie test, just like we do for the
static unit test.

While we're at it, all of the other strings like this have the word
"self-test", so add it to the missing place here.

Fixes: e7096c13 ("net: WireGuard secure network tunnel")
Cc: stable@vger.kernel.org
Signed-off-by: NJason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/net/wireguard/selftest/allowedips.c

@@ -296,6 +296,7 @@ static __init bool randomized_test(void)
 			goto free;
 		}
 		kref_init(&peers[i]->refcount);
+		INIT_LIST_HEAD(&peers[i]->allowedips_list);
 	}
 
 	mutex_lock(&mutex);
@@ -333,7 +334,7 @@ static __init bool randomized_test(void)
 			if (wg_allowedips_insert_v4(&t,
 						    (struct in_addr *)mutated,
 						    cidr, peer, &mutex) < 0) {
-				pr_err("allowedips random malloc: FAIL\n");
+				pr_err("allowedips random self-test malloc: FAIL\n");
 				goto free_locked;
 			}
 			if (horrible_allowedips_insert_v4(&h,