From: "Richard W.M. Jones" <rjones@redhat.com>
To: Chris Mason <clm@fb.com>
Cc: Linux FS Devel <linux-fsdevel@vger.kernel.org>,
axboe@fb.com, kmo@daterainc.com, neilb@suse.de
Subject: Re: Latest kernel NULL pointer deref when running mke2fs
Date: Sun, 9 Feb 2014 18:47:32 +0000 [thread overview]
Message-ID: <20140209184732.GB7373@redhat.com> (raw)
In-Reply-To: <20140205122120.GW1346@redhat.com>
On Wed, Feb 05, 2014 at 12:21:20PM +0000, Richard W.M. Jones wrote:
> On Tue 04 Feb 2014 12:31:56 PM EST, Richard W.M. Jones wrote:
> >https://lkml.org/lkml/2014/2/4/107
>
> Sorry about the delay. I ran into a different kernel bug which
> needed fixing first.
>
> The patch above *does not* fix this issue.
To follow up here, it's actually an MD problem. The following
userspace commands are enough to trigger the NULL pointer deref:
mdadm --create --run test --level raid1 --raid-devices 2 /dev/sda1 /dev/sdb1
wipefs -a --force /dev/md/test
mke2fs -t ext4 -F /dev/md/test
There's a full log attached to this comment:
https://bugzilla.redhat.com/show_bug.cgi?id=1061339#c8
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming blog: http://rwmj.wordpress.com
Fedora now supports 80 OCaml packages (the OPEN alternative to F#)
next prev parent reply other threads:[~2014-02-09 18:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-04 16:09 Latest kernel NULL pointer deref when running mke2fs Richard W.M. Jones
2014-02-04 17:04 ` Chris Mason
2014-02-04 17:16 ` Richard W.M. Jones
2014-02-04 17:31 ` Richard W.M. Jones
2014-02-04 17:49 ` Chris Mason
2014-02-05 12:21 ` Richard W.M. Jones
2014-02-09 18:47 ` Richard W.M. Jones [this message]
2014-02-10 23:08 ` Kent Overstreet
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