linux-kernel - Re: INFO: rcu detected stall in sctp_generate_heartbeat

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Date:   Tue, 8 May 2018 09:06:43 -0300
From:   Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:     syzbot <syzbot+e4a5bbd54260c93014f9@...kaller.appspotmail.com>
Cc:     davem@...emloft.net, linux-kernel@...r.kernel.org,
        linux-sctp@...r.kernel.org, netdev@...r.kernel.org,
        nhorman@...driver.com, syzkaller-bugs@...glegroups.com,
        vyasevich@...il.com
Subject: Re: INFO: rcu detected stall in sctp_generate_heartbeat_event

On Tue, May 08, 2018 at 12:35:02AM -0700, syzbot wrote:
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:    90278871d4b0 Merge git://git.kernel.org/pub/scm/linux/kern..
> git tree:       net-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=119a7237800000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=aea320d3af5ef99d
> dashboard link: https://syzkaller.appspot.com/bug?extid=e4a5bbd54260c93014f9
> compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
>
> Unfortunately, I don't have any reproducer for this crash yet.

A reproducer will be welcomed. With just these traces, I don't think
we have enough information.

  Marcelo