On Wed, 13 Sep 2023 16:12:43 -0400 Zi Yan <zi.yan@xxxxxxxx> wrote:
> On SPARSEMEM without VMEMMAP, struct page is not guaranteed to be
> contiguous, since each memory section's memmap might be allocated
> independently. hugetlb pages can go beyond a memory section size, thus
> direct struct page manipulation on hugetlb pages/subpages might give
> wrong struct page. Kernel provides nth_page() to do the manipulation
> properly. Use that whenever code can see hugetlb pages.
for (each patch) {
Can we please explain why -stable backporting is recommended?
Such an explanation will, as always, include a description of the
user-visible effects of the bug.
Some of the Fixes: targets are very old: 5 years. Has something
changed to bring these flaws to light? Or is it from code inspection?
}
Thanks.
