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cgroup: Check for ret during cgroup1_base_files cft addition

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There is no check for possible failure while populating
cgroup1_base_files cft in css_populate_dir(), like its cgroup v2 counter
parts cgroup_{base,psi}_files.  In case of failure, the cgroup might not
be set up right.  Add ret value check to return on failure.

Signed-off-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Kamalesh Babulal
2023-09-12 12:34:34 +05:30
committed by Tejun Heo
parent ce9ecca023
commit fd55c0adb4
1 changed files with 4 additions and 2 deletions
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6
kernel/cgroup/cgroup.c
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@@ -1731,8 +1731,10 @@ static int css_populate_dir(struct cgroup_subsys_state *css)
return ret;
}
} else {
cgroup_addrm_files(css, cgrp,
cgroup1_base_files, true);
ret = cgroup_addrm_files(css, cgrp,
cgroup1_base_files, true);
if (ret < 0)
return ret;
}
} else {
list_for_each_entry(cfts, &css->ss->cfts, node) {