From: Milan Broz <mbroz@redhat.com>
To: device-mapper development <dm-devel@redhat.com>
Cc: "Jörn Engel" <joern@logfs.org>,
"Prasad Joshi" <prasadjoshi124@gmail.com>,
"Witold Baryluk" <baryluk@smp.if.uj.edu.pl>,
"Aniket Sane" <aniketsane@gmail.com>
Subject: Re: logfs: kernel NULL dereference
Date: Thu, 15 Sep 2011 16:27:52 +0200 [thread overview]
Message-ID: <4E720B68.80809@redhat.com> (raw)
In-Reply-To: <20110914183429.GE24351@logfs.org>
On 09/14/2011 08:34 PM, Jörn Engel wrote:
> Forwarded to dm-devel. Problem is a NULL pointer dereference in
> kcryptd_io_read, which is triggered when mounting logfs. If someone
> with device mapper knowledge could have a look, that would be useful.
>
> On Wed, 14 September 2011 20:24:25 +0200, Jörn Engel wrote:
>>
>> Ok, I can reliably reproduce the problem with the following, based on
>> your description:
>>
>> truncate -s 0 foo
>> truncate -s 1G foo
>> losetup -v -f foo
>> cryptsetup luksFormat /dev/loop0
>> cryptsetup luksOpen /dev/loop0 foo
>> pvcreate /dev/mapper/foo
>> vgcreate our_volume /dev/mapper/foo
>> lvcreate -L 128M -n logfstest our_volume
>> yes yes | mklogfs /dev/mapper/our_volume-logfstest
>> mount /dev/mapper/our_volume-logfstest /mnt/
Which kernel version are you using?
>> It is a bit annoying that cryptsetup cannot easily be scripted.
It can be easily scripted. (In quiet mode it will not ask for YES response, add -q,
or just do "echo -n $PASSWORD | cryptsetup luksFormat ...")
Milan
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next prev parent reply other threads:[~2011-09-15 14:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20110903125637.GG6092@smp.if.uj.edu.pl>
[not found] ` <20110907141527.GM32018@logfs.org>
[not found] ` <20110907210312.GA17634@smp.if.uj.edu.pl>
[not found] ` <20110907220856.GR32018@logfs.org>
[not found] ` <20110908161726.GA9104@smp.if.uj.edu.pl>
[not found] ` <20110914182425.GD24351@logfs.org>
2011-09-14 18:34 ` logfs: kernel NULL dereference Jörn Engel
2011-09-14 19:01 ` Witold Baryluk
2011-09-15 14:27 ` Milan Broz [this message]
2011-09-15 14:52 ` Jörn Engel
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