[lvm-devel] main - cov: check pointer before dereferencing
Zdenek Kabelac
zkabelac at sourceware.org
Fri Oct 15 21:42:25 UTC 2021
Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=882141eb8c1a9718652cd903e411b6876aff54ef
Commit: 882141eb8c1a9718652cd903e411b6876aff54ef
Parent: 65ba4964df27d2d3f308d2f378e814290ba6d7bb
Author: Zdenek Kabelac <zkabelac at redhat.com>
AuthorDate: Fri Oct 15 14:48:48 2021 +0200
Committer: Zdenek Kabelac <zkabelac at redhat.com>
CommitterDate: Fri Oct 15 23:40:56 2021 +0200
cov: check pointer before dereferencing
Check pv2 is non-null before trying to deref its tags.
---
lib/metadata/lv_manip.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/metadata/lv_manip.c b/lib/metadata/lv_manip.c
index 1a4e613a7..003748d6f 100644
--- a/lib/metadata/lv_manip.c
+++ b/lib/metadata/lv_manip.c
@@ -2354,7 +2354,7 @@ static int _match_pv_tags(const struct dm_config_node *cling_tag_list_cn,
const struct dm_config_value *cv;
const char *str;
const char *tag_matched;
- struct dm_list *tags_to_match = mem ? NULL : pv_tags ? : &pv2->tags;
+ struct dm_list *tags_to_match = mem ? NULL : pv_tags ? : ((pv2) ? &pv2->tags : NULL);
struct dm_str_list *sl;
unsigned first_tag = 1;
@@ -2409,7 +2409,7 @@ static int _match_pv_tags(const struct dm_config_node *cling_tag_list_cn,
continue;
}
- if (!str_list_match_list(&pv1->tags, tags_to_match, &tag_matched))
+ if (tags_to_match && !str_list_match_list(&pv1->tags, tags_to_match, &tag_matched))
continue;
if (!pv_tags) {
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