From: Wei Yang richardw.yang@linux.intel.com
mainline inclusion from mainline-5.6-rc1 commit cb829624867b5ab10bc6a7036d183b1b82bfe9f8 category: bugfix bugzilla: 29957 CVE: NA
------------------------------------------------- The page could be a tail page, if this is the case, this BUG_ON will never be triggered.
Link: http://lkml.kernel.org/r/20200110032610.26499-1-richardw.yang@linux.intel.co... Fixes: e9b61f19858a ("thp: reintroduce split_huge_page()")
Signed-off-by: Wei Yang richardw.yang@linux.intel.com Acked-by: Kirill A. Shutemov kirill.shutemov@linux.intel.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org (cherry picked from commit cb829624867b5ab10bc6a7036d183b1b82bfe9f8) Signed-off-by: Kefeng Wang wangkefeng.wang@huawei.com Reviewed-by: Jing Xiangfeng jingxiangfeng@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- mm/huge_memory.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index eeb0611..1469983 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2653,7 +2653,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) unsigned long flags; pgoff_t end;
- VM_BUG_ON_PAGE(is_huge_zero_page(page), page); + VM_BUG_ON_PAGE(is_huge_zero_page(head), head); VM_BUG_ON_PAGE(!PageLocked(page), page); VM_BUG_ON_PAGE(!PageCompound(page), page);