From: syzbot <syzbot+827ae2bfb3a3529333e9@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [syzbot] Re: [syzbot] [rdma?] [s390?] [net?] KASAN: null-ptr-deref Read in smc_tcp_syn_recv_sock
Date: Sat, 05 Apr 2025 03:08:05 -0700 [thread overview]
Message-ID: <67f10105.050a0220.0a13.0233.GAE@google.com> (raw)
In-Reply-To: <67eaf9b8.050a0220.3c3d88.004a.GAE@google.com>
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***
Subject: Re: [syzbot] [rdma?] [s390?] [net?] KASAN: null-ptr-deref Read in smc_tcp_syn_recv_sock
Author: richard120310@gmail.com
#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 850925a8133c
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 3e6cb35baf25..41f8dcd734a6 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -127,6 +127,8 @@ static struct sock *smc_tcp_syn_recv_sock(const struct sock *sk,
struct sock *child;
smc = smc_clcsock_user_data(sk);
+ if (!smc)
+ goto drop;
if (READ_ONCE(sk->sk_ack_backlog) + atomic_read(&smc->queued_smc_hs) >
sk->sk_max_ack_backlog)
next prev parent reply other threads:[~2025-04-05 10:08 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-31 20:23 syzbot
2025-04-05 10:08 ` syzbot [this message]
2025-06-29 13:29 ` syztest Arnaud Lecomte
2025-06-29 13:52 ` [syzbot] [smc?] KASAN: null-ptr-deref Read in smc_tcp_syn_recv_sock syzbot
2025-06-30 6:51 ` syztest Paolo Abeni
2025-06-29 14:47 ` syztest Arnaud Lecomte
2025-06-29 15:07 ` [syzbot] [smc?] KASAN: null-ptr-deref Read in smc_tcp_syn_recv_sock syzbot
2025-06-29 15:10 ` syztest Arnaud Lecomte
2025-06-29 16:00 ` [syzbot] [smc?] KASAN: null-ptr-deref Read in smc_tcp_syn_recv_sock syzbot
2025-06-30 0:27 ` [syzbot] [rdma?] [s390?] [net?] " Hillf Danton
2025-06-30 0:58 ` [syzbot] [smc?] " syzbot
2025-11-15 16:31 ` syzbot
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