linux-kernel - Re: [PATCH v2 1/3] mm: memory-failure: update ttu flag inside unmap_poisoned

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

Message-ID: <7867c162-6a2e-4291-ac57-a7bb6df5c4ce@huawei.com>
Date: Mon, 20 Jan 2025 17:06:37 +0800
From: mawupeng <mawupeng1@...wei.com>
To: <linmiaohe@...wei.com>
CC: <mawupeng1@...wei.com>, <linux-mm@...ck.org>,
	<linux-kernel@...r.kernel.org>, <akpm@...ux-foundation.org>,
	<david@...hat.com>, <osalvador@...e.de>, <nao.horiguchi@...il.com>,
	<mhocko@...e.com>
Subject: Re: [PATCH v2 1/3] mm: memory-failure: update ttu flag inside
 unmap_poisoned_folio



On 2025/1/20 14:24, Miaohe Lin wrote:
> On 2025/1/16 14:16, Wupeng Ma wrote:
>> From: Ma Wupeng <mawupeng1@...wei.com>
> 
> Thanks for your patch. Some nits below.
> 
>>
>> Commit 6da6b1d4a7df ("mm/hwpoison: convert TTU_IGNORE_HWPOISON to
>> TTU_HWPOISON") introduce TTU_HWPOISON to replace TTU_IGNORE_HWPOISON
>> in order to stop send SIGBUS signal when accessing an error page after
>> a memory error on a clean folio. However during page migration, anon
>> folio must be set with TTU_HWPOISON during unmap_*(). For pagecache
>> we need some policy just like the one in hwpoison_user_mappings to
>> set this flag. So move this policy from hwpoison_user_mappings to
>> unmap_poisoned_folio to handle this waring properly.
> 
> s/waring/warning/g

Thanks for your reply.

will be fixed later.

> 
>>
>> Waring will be produced during unamp poison folio with the following log:
> 
> s/Waring/Warning/g

Thanks for your reply.

will be fixed later.