linux-kernel - Re: [PATCH v2 1/4] mm: kmemleak: add OBJECT_PHYS flag for objects allocated with physical address

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: <YqHDQ2MOJ1RG9LLA@arm.com>
Date:   Thu, 9 Jun 2022 10:54:11 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Patrick Wang <patrick.wang.shcn@...il.com>
Cc:     akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, yee.lee@...iatek.com
Subject: Re: [PATCH v2 1/4] mm: kmemleak: add OBJECT_PHYS flag for objects
 allocated with physical address

On Tue, Jun 07, 2022 at 10:32:26PM +0800, Patrick Wang wrote:
> The leak check could be taken on physical objects. Conversion
> of block address from virtual to physical before lookup should
> make this work (this is useless currently). I think we'd better
> know about this.

Yes, we could add this, but since all the phys objects are currently
'gray', it won't make any difference, other than an extra lookup in the
phys tree.

-- 
Catalin