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Date: Tue, 29 Dec 2020 17:52:56 -0800 From: Cong Wang <xiyou.wangcong@...il.com> To: Jakub Kicinski <kuba@...nel.org> Cc: syzbot <syzbot+eaaf6c4a6a8cb1869d86@...kaller.appspotmail.com>, David Miller <davem@...emloft.net>, Greg KH <gregkh@...uxfoundation.org>, Kees Cook <keescook@...omium.org>, Kirill Tkhai <ktkhai@...tuozzo.com>, Alexey Kuznetsov <kuznet@....inr.ac.ru>, LKML <linux-kernel@...r.kernel.org>, Linux Kernel Network Developers <netdev@...r.kernel.org>, Philippe Ombredanne <pombredanne@...b.com>, Stephen Hemminger <stephen@...workplumber.org>, syzkaller-bugs <syzkaller-bugs@...glegroups.com>, Tom Herbert <tom@...bertland.com>, Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org> Subject: Re: inconsistent lock state in ila_xlat_nl_cmd_add_mapping On Tue, Dec 29, 2020 at 5:39 PM Jakub Kicinski <kuba@...nel.org> wrote: > > On Mon, 13 Aug 2018 21:40:03 -0700 syzbot wrote: > > Hello, > > > > syzbot found the following crash on: > > > > HEAD commit: 78cbac647e61 Merge branch 'ip-faster-in-order-IP-fragments' > > git tree: net-next > > console output: https://syzkaller.appspot.com/x/log.txt?x=14df4828400000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=9100338df26ab75 > > dashboard link: https://syzkaller.appspot.com/bug?extid=eaaf6c4a6a8cb1869d86 > > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > > syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=13069ad2400000 > > > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > > Reported-by: syzbot+eaaf6c4a6a8cb1869d86@...kaller.appspotmail.com > > #syz invalid > > Hard to track down what fixed this, but the lockdep splat is mixing up > locks from two different hashtables, so there was never a real issue > here. This one is probably fixed by: commit ff93bca769925a2d8fd7f910cdf543d992e17f07 Author: Cong Wang <xiyou.wangcong@...il.com> Date: Tue Aug 14 15:21:31 2018 -0700 ila: make lockdep happy again given the time of last reproducing... Thanks.
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