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cgroup/cpuset: Fix retval in update_cpumask()

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commit 25125a4762835d62ba1e540c1351d447fc1f6c7c upstream.

The update_cpumask(), checks for newly requested cpumask by calling
validate_change(), which returns an error on passing an invalid set
of cpu(s). Independent of the error returned, update_cpumask() always
returns zero, suppressing the error and returning success to the user
on writing an invalid cpu range for a cpuset. Fix it by returning
retval instead, which is returned by validate_change().

Fixes: 99fe36ba6f ("cgroup/cpuset: Improve temporary cpumasks handling")
Signed-off-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Reviewed-by: Waiman Long <longman@redhat.com>
Cc: stable@vger.kernel.org # v6.6+
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kamalesh Babulal
2024-02-29 15:41:14 +05:30
committed by Greg Kroah-Hartman
parent 0f952b1bb0
commit d9f400dc3e
1 changed files with 1 additions and 1 deletions
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2
kernel/cgroup/cpuset.c
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@@ -1948,7 +1948,7 @@ static int update_cpumask(struct cpuset *cs, struct cpuset *trialcs,
}
out_free:
free_cpumasks(NULL, &tmp);
return 0;
return retval;
}
/*