shaba/lvm2
1
0
Fork 0
mirror of git://sourceware.org/git/lvm2.git synced 2024-12-21 13:34:40 +03:00
Code Releases Activity

debug: extra validation of passed segment

Browse Source 
Always check if passed segment really is correct cache segment.
(Avoids derefernce of possibly NULL seg->pool_lv).
This commit is contained in:
Zdenek Kabelac 2015-05-07 14:04:22 +02:00
parent 29c709f591
commit cbdf514bbc
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
lib/cache_segtype/cache.c
View File

@ -282,9 +282,16 @@ static int _cache_add_target_line(struct dev_manager *dm,
struct dm_tree_node *node, uint64_t len,
uint32_t *pvmove_mirror_count __attribute__((unused)))
{
struct lv_segment *cache_pool_seg = first_seg(seg->pool_lv);
struct lv_segment *cache_pool_seg;
char *metadata_uuid, *data_uuid, *origin_uuid;
if (!seg->pool_lv || !seg_is_cache(seg)) {
log_error(INTERNAL_ERROR "Passed segment is not cache.");
return 0;
}
cache_pool_seg = first_seg(seg->pool_lv);
if (!(metadata_uuid = build_dm_uuid(mem, cache_pool_seg->metadata_lv, NULL)))
return_0;