[libvirt] [PATCH] util: Fix possible NULL dereference
Commit 1a80b97d, which added the virCgroupHasEmptyTasks() function
forgot that the parameter @cgroup may be NULL and did not check that.
Signed-off-by: Martin Kletzander <mkletzan(a)redhat.com>
---
src/util/vircgroup.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
index 4857ef3..64bc647 100644
--- a/src/util/vircgroup.c
+++ b/src/util/vircgroup.c
@@ -3932,6 +3932,9 @@ virCgroupHasEmptyTasks(virCgroupPtr cgroup, int controller)
int ret = -1;
char *content = NULL;
+ if (!cgroup)
+ return -1;
+
ret = virCgroupGetValueStr(cgroup, controller, "tasks", &content);
if (ret == 0 && content[0] == '\0')
--
2.2.1