Author: mav
Date: Thu Mar 7 18:55:37 2013
New Revision: 247918
URL: http://svnweb.freebsd.org/changeset/base/247918
Log:
Fix panic when Secondary_Element_Count == 1 and Secondary_Element_Seq
is not set (255).
Reported by: sbruno
MFC after: 1 week
Modified:
head/sys/geom/raid/md_ddf.c
Modified: head/sys/geom/raid/md_ddf.c
==============================================================================
--- head/sys/geom/raid/md_ddf.c Thu Mar 7 16:50:07 2013 (r247917)
+++ head/sys/geom/raid/md_ddf.c Thu Mar 7 18:55:37 2013 (r247918)
@@ -881,7 +881,10 @@ ddf_vol_meta_update(struct ddf_vol_meta
hdr = src->hdr;
vde = &src->vdr->entry[ddf_meta_find_vd(src, GUID)];
vdc = ddf_meta_find_vdc(src, GUID);
- bvd = GET8D(src, vdc->Secondary_Element_Seq);
+ if (GET8D(src, vdc->Secondary_Element_Count) == 1)
+ bvd = 0;
+ else
+ bvd = GET8D(src, vdc->Secondary_Element_Seq);
size = GET16(src, hdr->Configuration_Record_Length) * src->sectorsize;
if (dst->vdc == NULL ||
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