From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+2eab87cf3100f45423ec@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [net?] [s390?] KASAN: slab-use-after-free Read in netdev_walk_all_lower_dev
Date: Sat, 7 Dec 2024 09:38:13 +0800 [thread overview]
Message-ID: <20241207013813.782-1-hdanton@sina.com> (raw)
In-Reply-To: <67531f5d.050a0220.2477f.0006.GAE@google.com>
On Fri, 06 Dec 2024 07:59:25 -0800
> syzbot found the following issue on:
>
> HEAD commit: 896d8946da97 Merge tag 'net-6.13-rc2' of git://git.kernel...
> git tree: net
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10de5330580000
#syz test
--- x/net/smc/smc_core.c
+++ y/net/smc/smc_core.c
@@ -1896,7 +1896,9 @@ int smc_vlan_by_tcpsk(struct socket *clc
priv.data = (void *)&ini->vlan_id;
rtnl_lock();
+ rcu_read_lock();
netdev_walk_all_lower_dev(ndev, smc_vlan_by_tcpsk_walk, &priv);
+ rcu_read_unlock();
rtnl_unlock();
out_rel:
--
next prev parent reply other threads:[~2024-12-07 1:38 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-06 15:59 [syzbot] [net?] [s390?] KASAN: slab-use-after-free Read in netdev_walk_all_lower_dev syzbot
2024-12-07 0:05 ` Hillf Danton
2024-12-07 0:34 ` syzbot
2024-12-07 1:38 ` Hillf Danton [this message]
2024-12-07 2:09 ` syzbot
2024-12-07 2:57 ` Hillf Danton
2024-12-07 3:22 ` syzbot
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