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From: Greg KH <gregkh@linuxfoundation.org>
To: syzbot <syzbot+3dcb532381f98c86aeb1@syzkaller.appspotmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	linux-kernel@vger.kernel.org, penguin-kernel@i-love.sakura.ne.jp,
	rafael@kernel.org, syzkaller-bugs@googlegroups.com,
	tj@kernel.org, torvalds@linux-foundation.org
Subject: Re: WARNING in kernfs_get
Date: Wed, 20 Nov 2019 09:29:58 +0100	[thread overview]
Message-ID: <20191120082958.GB2862348@kroah.com> (raw)
In-Reply-To: <0000000000001da6b60597c2ce91@google.com>

On Wed, Nov 20, 2019 at 12:17:01AM -0800, syzbot wrote:
> syzbot has bisected this bug to:
> 
> commit 726e41097920a73e4c7c33385dcc0debb1281e18
> Author: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Date:   Tue Jul 10 00:29:10 2018 +0000
> 
>     drivers: core: Remove glue dirs from sysfs earlier
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17a101cee00000
> start commit:   9a568276 Merge branch 'x86-urgent-for-linus' of git://git...
> git tree:       upstream
> final crash:    https://syzkaller.appspot.com/x/report.txt?x=146101cee00000
> console output: https://syzkaller.appspot.com/x/log.txt?x=106101cee00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=8f59875069d721b6
> dashboard link: https://syzkaller.appspot.com/bug?extid=3dcb532381f98c86aeb1
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12657f0a400000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=117728ae400000
> 
> Reported-by: syzbot+3dcb532381f98c86aeb1@syzkaller.appspotmail.com
> Fixes: 726e41097920 ("drivers: core: Remove glue dirs from sysfs earlier")
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Again, I think this should be resolved with ac43432cb1f5 ("driver core:
Fix use-after-free and double free on glue directory")

Is there any way to run the reproducer on a newer tree?

thanks,

greg k-h

  reply	other threads:[~2019-11-20  8:30 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-10  7:31 WARNING in kernfs_get syzbot
2018-10-31  9:56 ` Tetsuo Handa
2019-11-20  8:17 ` syzbot
2019-11-20  8:29   ` Greg KH [this message]
2019-11-20  8:53     ` Dmitry Vyukov
2019-11-20 10:42     ` Tetsuo Handa

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