linux-kernel - Re: [PATCH] hugetlb: fix memoryleak in hugetlb_mcopy_atomic

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Message-ID: <Ysv46rUQDluYICn7@FVFYT0MHHV2J>
Date:   Mon, 11 Jul 2022 18:18:18 +0800
From:   Muchun Song <songmuchun@...edance.com>
To:     Miaohe Lin <linmiaohe@...wei.com>
Cc:     akpm@...ux-foundation.org, mike.kravetz@...cle.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] hugetlb: fix memoryleak in hugetlb_mcopy_atomic_pte

On Sat, Jul 09, 2022 at 05:26:29PM +0800, Miaohe Lin wrote:
> 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@...wei.com>

Acked-by: Muchun Song <songmuchun@...edance.com>

Thanks.