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ParseList treated its size argument as an allocation hint. Cgroup cpuset writes therefore expanded user-supplied ranges before checking whether their indices exceeded the available CPUs or memory nodes. A range ending at the maximum uint32 value could also wrap the iteration counter. Make the size an exclusive bit limit and reject each range before adding its bits. All callers already pass their available CPU or node counts. Remove their late maximum checks, which also accepted an index equal to the count. Assisted-by: OpenAI Codex
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ParseList treated its size argument as an allocation hint. Cgroup cpuset
writes therefore expanded user-supplied ranges before checking whether
their indices exceeded the available CPUs or memory nodes. A range
ending at the maximum uint32 value could also wrap the iteration
counter.
Make the size an exclusive bit limit and reject each range before adding
its bits. All callers already pass their available CPU or node counts.
Remove their late maximum checks, which also accepted an index equal to
the count.
Assisted-by: OpenAI Codex