lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:   Sun, 12 Apr 2020 10:32:01 +0200
From:   Florian Westphal <fw@...len.de>
To:     syzbot <syzbot+ffec3741d41140477097@...kaller.appspotmail.com>
Cc:     davem@...emloft.net, kuba@...nel.org, linux-kernel@...r.kernel.org,
        mathew.j.martineau@...ux.intel.com, matthieu.baerts@...sares.net,
        mptcp@...ts.01.org, netdev@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: WARNING: bad unlock balance in mptcp_listen

syzbot <syzbot+ffec3741d41140477097@...kaller.appspotmail.com> wrote:
> syzbot found the following crash on:
> 
> HEAD commit:    5b8b9d0c Merge branch 'akpm' (patches from Andrew)
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=1712bdb3e00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=23c5a352e32a1944
> dashboard link: https://syzkaller.appspot.com/bug?extid=ffec3741d41140477097
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> 
> Unfortunately, I don't have any reproducer for this crash yet.
> 
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+ffec3741d41140477097@...kaller.appspotmail.com
> 
> =====================================
> WARNING: bad unlock balance detected!
> 5.6.0-syzkaller #0 Not tainted
> -------------------------------------
> syz-executor.0/25417 is trying to release lock (sk_lock-AF_INET6) at:
> [<ffffffff87c65063>] mptcp_listen+0x1c3/0x2e0 net/mptcp/protocol.c:1783
> but there are no more locks to release!

#syz dup: WARNING: bad unlock balance in mptcp_poll

Powered by blists - more mailing lists