From: Dave Chinner <david@fromorbit.com>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: syzbot <syzbot+84a67953651a971809ba@syzkaller.appspotmail.com>,
"Darrick J. Wong" <darrick.wong@oracle.com>,
LKML <linux-kernel@vger.kernel.org>,
linux-xfs@vger.kernel.org,
syzkaller-bugs <syzkaller-bugs@googlegroups.com>
Subject: Re: WARNING: bad unlock balance in xfs_iunlock
Date: Wed, 2 May 2018 08:51:59 +1000 [thread overview]
Message-ID: <20180501225159.GY23861@dastard> (raw)
In-Reply-To: <CACT4Y+aQZ8KbU1C-sJ2PUKn_788SEKQpYGjoLaRDJrP9vXjs-A@mail.gmail.com>
On Mon, Apr 30, 2018 at 03:24:48PM +0200, Dmitry Vyukov wrote:
> On Thu, Apr 5, 2018 at 8:54 PM, Dmitry Vyukov <dvyukov@google.com> wrote:
> > On Tue, Apr 3, 2018 at 6:38 AM, Dave Chinner <david@fromorbit.com> wrote:
> >> On Mon, Apr 02, 2018 at 07:01:02PM -0700, syzbot wrote:
> >>> Hello,
> >>>
> >>> syzbot hit the following crash on upstream commit
> >>> 86bbbebac1933e6e95e8234c4f7d220c5ddd38bc (Mon Apr 2 18:47:07 2018 +0000)
> >>> Merge branch 'ras-core-for-linus' of
> >>> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
> >>> syzbot dashboard link:
> >>> https://syzkaller.appspot.com/bug?extid=84a67953651a971809ba
> >>>
> >>> C reproducer: https://syzkaller.appspot.com/x/repro.c?id=5719304272084992
> >>> syzkaller reproducer:
> >>> https://syzkaller.appspot.com/x/repro.syz?id=5767783983874048
> >>
> >> What a mess. A hand built, hopelessly broken filesystem image made
> >> up of hex dumps, written into a mmap()d region of memory, then
> >> copied into a tmpfs file and mounted with the loop device.
> >>
> >> Engineers that can debug broken filesystems don't grow on trees. If
> >> we are to have any hope of understanding what the hell this test is
> >> doing, the bot needs to supply us with a copy of the built
> >> filesystem image the test uses. We need to be able to point forensic
> >> tools at the image to decode all the structures into human readable
> >> format - if we are forced to do that by hand or jump through hoops
> >> to create our own filesystem image than I'm certainly not going to
> >> waste time looking at these reports...
> >
> > Hi Dave,
> >
> > Here is the image:
> > https://drive.google.com/file/d/1jzhGGe5SBJcqfsjxCLHoh4Kazke1oTfC/view
>
> Have anybody looked at the bug and the image yet?
Yes, I did that a couple of weeks ago. Couldn't reproduce on a TOT
kernel here.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
next prev parent reply other threads:[~2018-05-01 22:52 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-03 2:01 WARNING: bad unlock balance in xfs_iunlock syzbot
2018-04-03 4:38 ` Dave Chinner
2018-04-05 18:54 ` Dmitry Vyukov
2018-04-05 21:38 ` Dave Chinner
2018-04-06 16:10 ` Darrick J. Wong
2018-04-13 10:03 ` Dmitry Vyukov
2018-04-16 19:22 ` Eric Sandeen
2018-04-30 13:23 ` Dmitry Vyukov
2018-04-30 13:49 ` Eric Sandeen
2018-04-30 14:02 ` Dmitry Vyukov
2018-04-30 15:14 ` Eric Sandeen
2018-05-02 9:54 ` Jan Tulak
2018-05-08 7:52 ` Dmitry Vyukov
2018-05-09 2:48 ` Eric Sandeen
2018-05-09 8:43 ` Dmitry Vyukov
2018-05-09 23:22 ` Dave Chinner
2018-05-11 8:59 ` Dmitry Vyukov
2018-05-12 1:16 ` Dave Chinner
2018-05-08 7:54 ` Dmitry Vyukov
2018-04-30 13:24 ` Dmitry Vyukov
2018-05-01 22:51 ` Dave Chinner [this message]
2018-05-08 7:56 ` Dmitry Vyukov
2018-05-09 0:50 ` Dave Chinner
2018-05-09 2:37 ` Eric Biggers
2018-05-09 3:32 ` Eric Sandeen
2018-05-09 13:55 ` Theodore Y. Ts'o
2018-05-09 14:13 ` Dmitry Vyukov
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=20180501225159.GY23861@dastard \
--to=david@fromorbit.com \
--cc=darrick.wong@oracle.com \
--cc=dvyukov@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-xfs@vger.kernel.org \
--cc=syzbot+84a67953651a971809ba@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).