| commit | eca84ebef17f1564f2f25201f5c7ac173d54e32d | [log] [tgz] |
|---|---|---|
| author | Muchun Song <[email protected]> | Thu Feb 04 18:32:13 2021 -0800 |
| committer | Greg Kroah-Hartman <[email protected]> | Wed Feb 10 09:29:21 2021 +0100 |
| tree | cdc616d2520b79d16fd1b1ab8bf87f4c27819427 | |
| parent | 5b9631cb6f3493408c26fcbbf8b90bf49f31bfed [diff] |
mm: hugetlb: remove VM_BUG_ON_PAGE from page_huge_active commit ecbf4724e6061b4b01be20f6d797d64d462b2bc8 upstream. The page_huge_active() can be called from scan_movable_pages() which do not hold a reference count to the HugeTLB page. So when we call page_huge_active() from scan_movable_pages(), the HugeTLB page can be freed parallel. Then we will trigger a BUG_ON which is in the page_huge_active() when CONFIG_DEBUG_VM is enabled. Just remove the VM_BUG_ON_PAGE. Link: https://lkml.kernel.org/r/[email protected] Fixes: 7e1f049efb86 ("mm: hugetlb: cleanup using paeg_huge_active()") Signed-off-by: Muchun Song <[email protected]> Reviewed-by: Mike Kravetz <[email protected]> Acked-by: Michal Hocko <[email protected]> Reviewed-by: Oscar Salvador <[email protected]> Cc: David Hildenbrand <[email protected]> Cc: Yang Shi <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>