From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+6cf5652d3df49fae2e3f@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [pm?] KASAN: use-after-free Read in netdev_unregister_kobject
Date: Wed, 24 Apr 2024 05:31:31 +0800 [thread overview]
Message-ID: <20240423213131.3040-1-hdanton@sina.com> (raw)
In-Reply-To: <000000000000afab690616b12f99@google.com>
On Mon, 22 Apr 2024 08:35:25 -0700
> syzbot found the following issue on:
>
> HEAD commit: 3cdb45594619 Merge tag 's390-6.9-4' of git://git.kernel.or..
> git tree: upstream
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=144067cb180000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 3cdb45594619
--- x/net/bluetooth/bnep/core.c
+++ y/net/bluetooth/bnep/core.c
@@ -540,16 +540,6 @@ static int bnep_session(void *arg)
return 0;
}
-static struct device *bnep_get_device(struct bnep_session *session)
-{
- struct l2cap_conn *conn = l2cap_pi(session->sock->sk)->chan->conn;
-
- if (!conn || !conn->hcon)
- return NULL;
-
- return &conn->hcon->dev;
-}
-
static const struct device_type bnep_type = {
.name = "bluetooth",
};
@@ -618,7 +608,6 @@ int bnep_add_connection(struct bnep_conn
bnep_set_default_proto_filter(s);
#endif
- SET_NETDEV_DEV(dev, bnep_get_device(s));
SET_NETDEV_DEVTYPE(dev, &bnep_type);
err = register_netdev(dev);
--
next prev parent reply other threads:[~2024-04-23 21:31 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-22 15:35 [syzbot] [pm?] KASAN: use-after-free Read in netdev_unregister_kobject syzbot
2024-04-22 23:16 ` Hillf Danton
2024-04-23 3:12 ` syzbot
2024-04-23 10:42 ` Hillf Danton
2024-04-23 13:25 ` syzbot
2024-04-23 21:31 ` Hillf Danton [this message]
2024-04-23 22:06 ` syzbot
2024-10-24 14:13 ` [syzbot] " syzbot
2024-10-24 14:14 ` syzbot
2024-11-01 11:57 ` syzbot
2024-11-01 11:59 ` syzbot
2024-11-01 15:01 ` [syzbot] Re: [PATCH v2] Bluetooth: fix use-after-free in device_for_each_child() syzbot
2024-11-01 19:30 ` syzbot
[not found] <411d4343-0a1f-4629-9c81-56f7c2e363da@yandex.ru>
2024-10-24 18:30 ` [syzbot] [pm?] KASAN: use-after-free Read in netdev_unregister_kobject syzbot
[not found] <17634403-3bc8-41c8-80a9-1cc10041b1ce@yandex.ru>
2024-10-24 18:30 ` syzbot
[not found] <20241101115715.e3eQ9%dmantipov@yandex.ru>
2024-11-01 12:23 ` syzbot
[not found] <20241101115926.vYGxC%dmantipov@yandex.ru>
2024-11-01 12:52 ` syzbot
[not found] <CABBYNZK=H9JtzaQudQ1b7TGU5VaJ_qX_bbSJhKSwWKh+5_1uUQ@mail.gmail.com>
2024-11-01 16:57 ` syzbot
[not found] <CABBYNZK3cVQ1nZbRDW2-VRTwOsJOW7hoRQEV26Qeh2juDjnMvA@mail.gmail.com>
2024-11-01 19:54 ` syzbot
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