[Pkg-gnupg-maint] Bug#776611: Bug#776611: [dirmngr] segfaults

[Florian Reitmeir]

Hi,


> stat /var/cache/dirmngr/crls.d/DIR.txt
device  65024
inode   330320
mode    33184
nlink   1
uid     126
gid     133
rdev    0
size    0
atime   1424002234
mtime   1351168424
ctime   1422569978
blksize 4096
blocks  0
link

> ls -l /var/cache/dirmngr/crls.d/DIR.txt
-rw-r----- 1 dirmngr dirmngr 0 Oct 25  2012
/var/cache/dirmngr/crls.d/DIR.txt

yes its empty.

And no i don't know how it got in that state. Its a notebook i daily
use, i use XFS which is known to behave not always nice if the power is
cut. And i never cared about dirmngr, even now i don't know why its
running.

so it looks like, it broken for a long time..

greetings, and thanks for the fix


On 02/17/2015 12:24 AM, Daniel Kahn Gillmor wrote:
> Control: tags 776611 - moreinfo unreproducible
> 
> Hi Florian--
> 
> Sorry for taking a little while to get to this...
> 
> On Thu 2015-02-05 02:59:28 -0500, Florian Reitmeir wrote:
>>  cat /var/log/dirmngr/dirmngr.log
>> 2015-02-02 06:36:34 dirmngr[3324.0] permanently loaded certificates: 0
>> 2015-02-02 06:36:34 dirmngr[3324.0]     runtime cached certificates: 0
>> 2015-02-02 16:02:48 dirmngr[2517.0] permanently loaded certificates: 0
>> 2015-02-02 16:02:48 dirmngr[2517.0]     runtime cached certificates: 0
>> 2015-02-03 22:48:20 dirmngr[2384.0] permanently loaded certificates: 0
>> 2015-02-03 22:48:20 dirmngr[2384.0]     runtime cached certificates: 0
>  [...]
>> attached is a stack trace, ..
> 
> Thanks for this information!  It looks to me like the errors are related
> to loading the CRL cache. (in particular, in open_dir() in
> src/crlcache.c).  I think i'm now able to reproduce this.
> 
> I suspect you have a zero-length file in
> /var/cache/dirmngr/crls.d/DIR.txt, is that correct?  can you show me the
> output of:
> 
>    stat /var/cache/dirmngr/crls.d/DIR.txt
> 
> If you move that file out of the way, can you start dirmngr without
> it crashing?
> 
>    mv /var/cache/dirmngr/crls.d/DIR.txt  /var/cache/dirmngr/crls.d/DIR.txt.bak
> 
> If this works, do you have any idea how dirmngr's crlcache got into this
> state?  I'm working on a patch now.
> 
>         --dkg
> 


-- 
Dipl.-Inf. Univ. Florian Reitmeir
E-Mail: net at multi24.com
Tel: +43 650 2661660
Fax: +43 650 2661660

HP: http://net.multi24.com
Amraserstr 23
6020 Innsbruck / Austria