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Kamalesh Babulal d9f400dc3e cgroup/cpuset: Fix retval in update_cpumask()

commit 25125a4762 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>

2024-04-03 15:28:40 +02:00

cgroup-internal.h

cgroup: make cgroup_is_threaded() and cgroup_is_thread_root() static

2023-06-05 10:31:41 -10:00

cgroup-v1.c

cgroup: Remove duplicates in cgroup v1 tasks file

2023-10-09 06:42:05 -10:00

cgroup.c

sched: psi: fix unprivileged polling against cgroups

2023-11-28 17:19:56 +00:00

cpuset.c

cgroup/cpuset: Fix retval in update_cpumask()