PSA: PVE kernel 7.0.14-24 has a bug on hugepage release

snullp

New Member
Jul 8, 2026
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I did not test if any previous kernel versions are free from this bug.

If vm.hugetlb_optimize_vmemmap=1 is set, then don't try to shrink hugepage pool at runtime. The pages will be gone until reboot and you'll see a kernel error.
PVE might shrink the hugepages pool at VM stop under certain condition. Use keephugepages: 1 to disable that.