Messages in this thread Patch in this message | | | From | Miaohe Lin <> | Subject | [PATCH] hugetlb: fix memoryleak in hugetlb_mcopy_atomic_pte | Date | Sat, 9 Jul 2022 17:26:29 +0800 |
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When alloc_huge_page fails, *pagep is set to NULL without put_page first. So the hugepage indicated by *pagep is leaked.
Fixes: 8cc5fcbb5be8 ("mm, hugetlb: fix racy resv_huge_pages underflow on UFFDIO_COPY") Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> --- mm/hugetlb.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 06c2d86b1ba3..598c37279fee 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -5962,6 +5962,7 @@ int hugetlb_mcopy_atomic_pte(struct mm_struct *dst_mm, page = alloc_huge_page(dst_vma, dst_addr, 0); if (IS_ERR(page)) { + put_page(*pagep); ret = -ENOMEM; *pagep = NULL; goto out; -- 2.23.0
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