diff options
Diffstat (limited to 'include/linux/cgroup.h')
| -rw-r--r-- | include/linux/cgroup.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 984f73b719a9..5a9abdee43fe 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -541,7 +541,12 @@ static inline int cgroup_name(struct cgroup *cgrp, char *buf, size_t buflen) static inline char * __must_check cgroup_path(struct cgroup *cgrp, char *buf, size_t buflen) { - return kernfs_path(cgrp->kn, buf, buflen); + int ret; + + ret = kernfs_path(cgrp->kn, buf, buflen); + if (ret < 0 || ret >= buflen) + return NULL; + return buf; } static inline void pr_cont_cgroup_name(struct cgroup *cgrp) |