shaba/lvm2
1
0
Fork 0
mirror of git://sourceware.org/git/lvm2.git synced 2025-01-03 05:18:29 +03:00
Code Releases Activity

Fix potential null ptr deref in 'origin_from_cow'

Browse Source 
return NULL rather than segfaulting if lv->snapshot is not set
This commit is contained in:
Jonathan Earl Brassow 2011-07-19 16:23:52 +00:00
parent 9796bd4db6
commit aa6599e687
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
lib/metadata/snapshot_manip.c
View File

@ -81,7 +81,9 @@ struct lv_segment *find_cow(const struct logical_volume *lv)
/* Given a cow LV, return its origin */
struct logical_volume *origin_from_cow(const struct logical_volume *lv)
{
return lv->snapshot->origin;
if (lv->snapshot)
return lv->snapshot->origin;
return NULL;
}
void init_snapshot_seg(struct lv_segment *seg, struct logical_volume *origin,