linux-kernel - Re: possible deadlock in vprintk

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Message-ID: <20180608075540.GA636@jagdpanzerIV>
Date:   Fri, 8 Jun 2018 16:55:40 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:     Dmitry Vyukov <dvyukov@...gle.com>
Cc:     syzbot <syzbot+831ee52a258e90882b4d@...kaller.appspotmail.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Petr Mladek <pmladek@...e.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>
Subject: Re: possible deadlock in vprintk_emit

On (06/08/18 09:50), Dmitry Vyukov wrote:
> > Hello,
> >
> > syzbot found the following crash on:
> >
> > HEAD commit:    1c8c5a9d38f6 Merge git://git.kernel.org/pub/scm/linux/kern..
> > git tree:       upstream
> > console output: https://syzkaller.appspot.com/x/log.txt?x=131d4ddf800000
> > kernel config:  https://syzkaller.appspot.com/x/.config?x=4f1acdf888c9d4e9
> > dashboard link: https://syzkaller.appspot.com/bug?extid=831ee52a258e90882b4d
> > compiler:       gcc (GCC) 8.0.1 20180413 (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+831ee52a258e90882b4d@...kaller.appspotmail.com
> 
> 
> This is the same as that one, right?

Yes.

	-ss