Messages in this thread | | | Date | Mon, 18 Apr 2022 21:03:52 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH v4] hugetlb: Fix wrong use of nr_online_nodes |
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On Sat, 16 Apr 2022 10:35:26 +0000 Peng Liu <liupeng256@huawei.com> wrote:
> Certain systems are designed to have sparse/discontiguous nodes. In > this case, nr_online_nodes can not be used to walk through numa node. > Also, a valid node may be greater than nr_online_nodes. > > However, in hugetlb, it is assumed that nodes are contiguous. Recheck > all the places that use nr_online_nodes, and repair them one by one.
oops.
What are the user-visible runtime effects of this flaw?
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