This one points to a bug that was fixed in commit dc4501ff2875 ("tipc: fix a
double free in tipc_enable_bearer()").
That commit was applied to 4.20, but is not present in 4.16, which caused this
dump.
To get further with this I need a dump of the actual crash in 4.20 or 5.0.
Maybe we are looking at two different problems here?
///jon
> -----Original Message-----
> From: netdev-ow...@vger.kernel.org <netdev-ow...@vger.kernel.org>
> On Behalf Of syzbot
> Sent: 19-Mar-19 18:24
> To: da...@davemloft.net; dsah...@gmail.com; Jon Maloy
> <jon.ma...@ericsson.com>; linux-kernel@vger.kernel.org;
> net...@vger.kernel.org; pa...@netfilter.org; syzkaller-
> b...@googlegroups.com; tipc-discuss...@lists.sourceforge.net;
> ying....@windriver.com
> Subject: Re: general protection fault in dst_dev_put (2)
>
> syzbot has bisected this bug to:
>
> commit 52dfae5c85a4c1078e9f1d5e8947d4a25f73dd81
> Author: Jon Maloy <jon.ma...@ericsson.com>
> Date: Thu Mar 22 19:42:52 2018 +0000
>
> tipc: obtain node identity from interface by default
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1631fc2b200000
> start commit: 52dfae5c tipc: obtain node identity from interface by defa..
> git tree: upstream
> final crash: https://syzkaller.appspot.com/x/report.txt?x=1531fc2b200000
> console output: https://syzkaller.appspot.com/x/log.txt?x=1131fc2b200000
> kernel config: https://syzkaller.appspot.com/x/.config?x=8f00801d7b7c4fe6
> dashboard link:
> https://syzkaller.appspot.com/bug?extid=9d4c12bfd45a58738d0a
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17254878c00000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=171ca5df400000
>
> Reported-by: syzbot+9d4c12bfd45a58738...@syzkaller.appspotmail.com
> Fixes: 52dfae5c ("tipc: obtain node identity from interface by default")
