This patch add one return value check for lssubsys
Signed-off-by: Ivana Hutarova Varekova <[email protected]>
---
src/tools/lssubsys.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/src/tools/lssubsys.c b/src/tools/lssubsys.c
index 306d4e0..89d0229 100644
--- a/src/tools/lssubsys.c
+++ b/src/tools/lssubsys.c
@@ -60,6 +60,11 @@ static int print_controller(cont_name_t cont_name, int flags)
int output = 0;
ret = cgroup_get_controller_begin(&handle, &controller);
+ if (ret != 0) {
+ fprintf(stderr, "cannot read controller data: %s\n",
+ cgroup_strerror(ret));
+ return ret;
+ }
path[0] = '\0';
name[0] = '\0';
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