Re: [syzbot] [smc?] general protection fault in __smc_diag_dump (4)

Wang Liang
2025-10-17T06:27:40Z

#syz test

diff --git a/net/smc/smc_inet.c b/net/smc/smc_inet.c
index a944e7dcb8b9..a94084b4a498 100644
--- a/net/smc/smc_inet.c
+++ b/net/smc/smc_inet.c
@@ -56,7 +56,6 @@ static struct inet_protosw smc_inet_protosw = {
.protocol = IPPROTO_SMC,
.prot = &smc_inet_prot,
.ops = &smc_inet_stream_ops,
- .flags = INET_PROTOSW_ICSK,
};

#if IS_ENABLED(CONFIG_IPV6)
@@ -104,27 +103,15 @@ static struct inet_protosw smc_inet6_protosw = {
.protocol = IPPROTO_SMC,
.prot = &smc_inet6_prot,
.ops = &smc_inet6_stream_ops,
- .flags = INET_PROTOSW_ICSK,
};
#endif /* CONFIG_IPV6 */

-static unsigned int smc_sync_mss(struct sock *sk, u32 pmtu)
-{
- /* No need pass it through to clcsock, mss can always be set by
- * sock_create_kern or smc_setsockopt.
- */
- return 0;
-}
-
static int smc_inet_init_sock(struct sock *sk)
{
struct net *net = sock_net(sk);

/* init common smc sock */
smc_sk_init(net, sk, IPPROTO_SMC);
-
- inet_csk(sk)->icsk_sync_mss = smc_sync_mss;
-
/* create clcsock */
return smc_create_clcsk(net, sk, sk->sk_family);
}
--
2.34.1