From: Florian Westphal <fw@strlen.de>
To: syzbot <syzbot+ffec3741d41140477097@syzkaller.appspotmail.com>
Cc: davem@davemloft.net, kuba@kernel.org,
linux-kernel@vger.kernel.org, mathew.j.martineau@linux.intel.com,
matthieu.baerts@tessares.net, mptcp@lists.01.org,
netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: WARNING: bad unlock balance in mptcp_listen
Date: Sun, 12 Apr 2020 10:32:01 +0200 [thread overview]
Message-ID: <20200412083201.GB5795@breakpoint.cc> (raw)
In-Reply-To: <000000000000d754eb05a312bd8f@google.com>
syzbot <syzbot+ffec3741d41140477097@syzkaller.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@syzkaller.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
prev parent reply other threads:[~2020-04-12 8:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-12 7:16 WARNING: bad unlock balance in mptcp_listen syzbot
2020-04-12 8:32 ` Florian Westphal [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200412083201.GB5795@breakpoint.cc \
--to=fw@strlen.de \
--cc=davem@davemloft.net \
--cc=kuba@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mathew.j.martineau@linux.intel.com \
--cc=matthieu.baerts@tessares.net \
--cc=mptcp@lists.01.org \
--cc=netdev@vger.kernel.org \
--cc=syzbot+ffec3741d41140477097@syzkaller.appspotmail.com \
--cc=syzkaller-bugs@googlegroups.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).