From mboxrd@z Thu Jan 1 00:00:00 1970 From: syzbot Subject: Re: unregister_netdevice: waiting for DEV to become free (2) Date: Sun, 19 Aug 2018 21:31:02 -0700 Message-ID: <0000000000007d22100573d66078@google.com> References: <00000000000056268e05737dcb95@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes To: ddstreet@ieee.org, dvyukov@google.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Return-path: In-Reply-To: <00000000000056268e05737dcb95@google.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org syzbot has found a reproducer for the following crash on: HEAD commit: d7857ae43dcc Add linux-next specific files for 20180817 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=13c72fce400000 kernel config: https://syzkaller.appspot.com/x/.config?x=4b10cd1ea76bb092 dashboard link: https://syzkaller.appspot.com/bug?extid=30209ea299c09d8785c9 compiler: gcc (GCC) 8.0.1 20180413 (experimental) syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=15df679a400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15242741400000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+30209ea299c09d8785c9@syzkaller.appspotmail.com IPVS: stopping master sync thread 4657 ... IPVS: stopping master sync thread 4663 ... IPVS: sync thread started: state = MASTER, mcast_ifn = syz_tun, syncid = 0, id = 0 IPVS: sync thread started: state = MASTER, mcast_ifn = syz_tun, syncid = 0, id = 0 IPVS: stopping master sync thread 4664 ... unregister_netdevice: waiting for lo to become free. Usage count = 1