El Thursday 22 May 2008 06:22:02 Pavel Roskin escribió: > On Wed, 2008-05-21 at 20:20 -0430, Isaac M. Marcos wrote: > > Today, I bump on this problem again on updating kernel. Because of this > > fault, update-initramfs reports a failure. It can't find "/". > > > > grub-probe -t device / --> segfault!! > > This patch should help. It checks for the buffer overrun. I still feel > uneasy about applying it because it hides a bigger problem.
I *completely* agree with you.
> diff --git a/disk/lvm.c b/disk/lvm.c
> index 1d898ff..997d15c 100644
> --- a/disk/lvm.c
> +++ b/disk/lvm.c
> @@ -302,9 +302,12 @@ grub_lvm_scan_device (const char *name)
> rlocn = mdah->raw_locns;
> p = q = metadatabuf + grub_le_to_cpu64 (rlocn->offset);
>
> - while (*q != ' ')
> + while (*q != ' ' && q < metadatabuf + mda_size)
> q++;
>
> + if (q == metadatabuf + mda_size)
> + goto fail2;
> +
> vgname_len = q - p;
> vgname = grub_malloc (vgname_len + 1);
> if (!vgname)
Sorry for the delay, other problems had higher priority :-)
Fine, to the problem at hand:
Patch applied, compiled, and working OK:
$ sudo grub-probe -t device /
/dev/sda2
Would this change be committed to cvs?
--
Isaac M. Marcos
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