From: Tejun Heo <tj@xxxxxxxxxx> commit b09c2baa56347ae65795350dfcc633dedb1c2970 upstream. 0644 is an odd perm to create a cgroup which is a directory. Use the regular 0755 instead. This is necessary for euid switching test case. Reviewed-by: Michal Koutný <mkoutny@xxxxxxxx> Signed-off-by: Tejun Heo <tj@xxxxxxxxxx> [OP: backport to 4.19: adjust context] Signed-off-by: Ovidiu Panait <ovidiu.panait@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- tools/testing/selftests/cgroup/cgroup_util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/tools/testing/selftests/cgroup/cgroup_util.c +++ b/tools/testing/selftests/cgroup/cgroup_util.c @@ -192,7 +192,7 @@ int cg_find_unified_root(char *root, siz int cg_create(const char *cgroup) { - return mkdir(cgroup, 0644); + return mkdir(cgroup, 0755); } static int cg_killall(const char *cgroup)