linux-kernel - Re: linux-next build error (8)

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Message-ID: <CACT4Y+a_d=5TNZth0dPov0B7tB5T9bAzWXBj1HjhXdn-=0KOOg@mail.gmail.com>
Date:   Wed, 18 Mar 2020 21:54:07 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+792dec47d693ccdc05a0@...kaller.appspotmail.com>,
        "Paul E. McKenney" <paulmck@...ux.ibm.com>,
        Josh Triplett <josh@...htriplett.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Joel Fernandes <joel@...lfernandes.org>, rcu@...r.kernel.org
Cc:     LKML <linux-kernel@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>
Subject: Re: linux-next build error (8)

On Wed, Mar 18, 2020 at 5:57 PM syzbot
<syzbot+792dec47d693ccdc05a0@...kaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:    47780d78 Add linux-next specific files for 20200318
> git tree:       linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=14228745e00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=b68b7b89ad96c62a
> dashboard link: https://syzkaller.appspot.com/bug?extid=792dec47d693ccdc05a0
> 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+792dec47d693ccdc05a0@...kaller.appspotmail.com
>
> kernel/rcu/tasks.h:1070:37: error: 'rcu_tasks_rude' undeclared (first use in this function); did you mean 'rcu_tasks_qs'?

+rcu maintainers

> ---
> This bug is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@...glegroups.com.
>
> syzbot will keep track of this bug report. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.