cgroup/cpuset: Fix a memory leak in update_exclusive_cpumask()

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Fix a possible memory leak in update_exclusive_cpumask() by moving the
alloc_cpumasks() down after the validate_change() check which can fail
and still before the temporary cpumasks are needed.

Fixes: e2ffe502ba ("cgroup/cpuset: Add cpuset.cpus.exclusive for v2")
Reported-and-tested-by: Mirsad Todorovac <mirsad.todorovac@alu.hr>
Closes: https://lore.kernel.org/lkml/14915689-27a3-4cd8-80d2-9c30d0c768b6@alu.unizg.hr
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org # v6.7+

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Waiman Long 2024-02-27 19:58:01 -05:00 • committed by Tejun Heo

parent e326df53af

commit 66f40b926d

1 changed files with 3 additions and 3 deletions

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kernel/cgroup/cpuset.c

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