From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+10a41dc44eef71aa9450@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [tipc?] BUG: soft lockup in do_sock_setsockopt
Date: Sat, 23 Mar 2024 08:02:23 +0800 [thread overview]
Message-ID: <20240323000223.2660-1-hdanton@sina.com> (raw)
In-Reply-To: <000000000000bb900e061440909c@google.com>
On Fri, 22 Mar 2024 07:23:18 -0700
> syzbot found the following issue on:
>
> HEAD commit: 707081b61156 Merge branch 'for-next/core', remote-tracking..
> git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=114e4c81180000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
--- x/net/tipc/socket.c
+++ y/net/tipc/socket.c
@@ -2488,6 +2488,11 @@ void tipc_sk_rcv(struct net *net, struct
struct tipc_sock *tsk;
struct sock *sk;
struct sk_buff *skb;
+ static int reent = 0;
+
+ if (reent)
+ return;
+ reent++;
__skb_queue_head_init(&xmitq);
while (skb_queue_len(inputq)) {
@@ -2524,6 +2529,7 @@ xmit:
dnode = msg_destnode(buf_msg(skb));
tipc_node_xmit_skb(net, skb, dnode, dport);
}
+ --reent;
}
static int tipc_wait_for_connect(struct socket *sock, long *timeo_p)
--
next prev parent reply other threads:[~2024-03-23 0:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-22 14:23 [syzbot] [tipc?] BUG: soft lockup in do_sock_setsockopt syzbot
2024-03-23 0:02 ` Hillf Danton [this message]
2024-03-23 8:44 ` syzbot
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