Re: [Fwd: Re: Bug#495949: grub-common: grub-probe segfaults]

[Felix Zielcke <fzielcke@z-51.de>]

Am Freitag, den 24.07.2009, 22:37 +0200 schrieb Vladimir 'phcoder'
Serbinenko:
> On Fri, Jul 24, 2009 at 10:09 PM, Pavel Roskin<proski@gnu.org> wrote:
> > On Fri, 2009-07-24 at 20:46 +0200, Felix Zielcke wrote:
> >> And another bug forward
> >> Anyone has an idea why a dm-crypt/lvm leads to a segfault in the strcmp
> >> here:
> >>  grub_partition_iterate (dest_dev->disk, (strcmp (dest_partmap, "pc_partition_map") ?
> >>                                            find_usable_region_gpt : find_usable_region_msdos));
> >
> > dest_partmap is only assigned a value in identify_partmap.  If
> > grub_partition_iterate() doesn't find any partitions, dest_partmap
> > remains a random pointer.
> >
> > The fix would be probably to initialize dest_partmap with NULL.  If it
> > becomes "pc_partition_map", iterate with find_usable_region_msdos, if it
> > becomes "gpt_partition_map", iterate with find_usable_region_gpt.  If
> > it's NULL or another string, exit with a warning.
> Actualy I already fixed this in my patch for installing on
> partitionless devices. Since there were no oppositions I'll commit it

Thanks, it fixed the segfault for Jean-Luc.

-- 
Felix Zielcke
Proud Debian Maintainer