linux-kernel - Re: [syzbot] [bpf?] [net?] WARNING in sock_map

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Message-Id: <20240824074305.1131-1-hdanton@sina.com>
Date: Sat, 24 Aug 2024 15:43:05 +0800
From: Hillf Danton <hdanton@...a.com>
To: syzbot <syzbot+8dbe3133b840c470da0e@...kaller.appspotmail.com>
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [bpf?] [net?] WARNING in sock_map_close (2)

On Thu, 22 Aug 2024 06:19:27 -0700
> syzbot found the following issue on:
> 
> HEAD commit:    d785ed945de6 net: wwan: t7xx: PCIe reset rescan
> git tree:       net-next
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12378c33980000

#syz test net-next  d785ed945de6

--- x/net/core/sock_map.c
+++ y/net/core/sock_map.c
@@ -209,7 +209,7 @@ static struct sk_psock *sock_map_psock_g
 	rcu_read_lock();
 	psock = sk_psock(sk);
 	if (psock) {
-		if (sk->sk_prot->close != sock_map_close) {
+		if (sk->sk_prot->close == sock_map_close) {
 			psock = ERR_PTR(-EBUSY);
 			goto out;
 		}
--