Re: [PATCH 6/6] mm: hugetlb: remove VM_BUG_ON_PAGE from page_huge_active

Mike Kravetz
2021-01-05T01:52:35Z

On 1/3/21 10:58 PM, Muchun Song wrote:
> 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.
>
> Fixes: 7e1f049efb86 ("mm: hugetlb: cleanup using paeg_huge_active()")
> Signed-off-by: Muchun Song <songmuchun@bytedance.com>
> ---
> mm/hugetlb.c | 1 -
> 1 file changed, 1 deletion(-)

Thanks!

Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>

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Mike Kravetz