linux-kernel - Re: [PATCH] mm/hugetlb: __get_user_pages ignores certain follow_hugetlb

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <d8abb8b3-2b0e-9d15-9315-7ed7250165f0@oracle.com>
Date:   Fri, 21 Jul 2017 20:05:02 -0400
From:   Daniel Jordan <daniel.m.jordan@...cle.com>
To:     Punit Agrawal <punit.agrawal@....com>
Cc:     linux-mm@...ck.org, aarcange@...hat.com, akpm@...ux-foundation.org,
        aneesh.kumar@...ux.vnet.ibm.com, gerald.schaefer@...ibm.com,
        james.morse@....com, kirill.shutemov@...ux.intel.com,
        mhocko@...e.com, mike.kravetz@...cle.com,
        n-horiguchi@...jp.nec.com, zhongjiang@...wei.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/hugetlb: __get_user_pages ignores certain
 follow_hugetlb_page errors

Hi Punit,

On 07/21/2017 05:20 AM, Punit Agrawal wrote:
> The change makes sense.
> FWIW,
>
> Acked-by: Punit Agrawal <punit.agrawal@....com>

Thanks, I appreciate that.

> I was wondering how you hit the issue. Is there a test case that could
> have spotted this earlier?

This was actually just by inspection.

I checked selftests/vm, but there's nothing in there that would have 
come close to spotting this, so unfortunately there's no existing test case.

Thanks,
Daniel