linux-kernel - Re: [syzbot] [net?] [s390?] general protection fault in smc_diag_dump

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240918160402.242505-1-aha310510@gmail.com>
Date: Thu, 19 Sep 2024 01:04:02 +0900
From: Jeongjun Park <aha310510@...il.com>
To: syzbot+f69bfae0a4eb29976e44@...kaller.appspotmail.com
Cc: syzkaller-bugs@...glegroups.com,
	linux-kernel@...r.kernel.org
Subject: Re: [syzbot] [net?] [s390?] general protection fault in smc_diag_dump_proto

#syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

---
 net/smc/smc_inet.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/net/smc/smc_inet.c b/net/smc/smc_inet.c
index a5b2041600f9..e101c8eee187 100644
--- a/net/smc/smc_inet.c
+++ b/net/smc/smc_inet.c
@@ -111,11 +111,17 @@ static struct inet_protosw smc_inet6_protosw = {
 static int smc_inet_init_sock(struct sock *sk)
 {
 	struct net *net = sock_net(sk);
+	int rc;
 
 	/* init common smc sock */
 	smc_sk_init(net, sk, IPPROTO_SMC);
 	/* create clcsock */
-	return smc_create_clcsk(net, sk, sk->sk_family);
+	rc = smc_create_clcsk(net, sk, sk->sk_family);
+
+	if (rc)
+		sk_common_release(sk);
+
+	return rc;
 }
 
 int __init smc_inet_init(void)
--