linux-kernel - Re: [PATCH v3 33/35] codetag: debug: mark codetags for reserved pages as empty

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: <202402121445.B6EDB95@keescook>
Date: Mon, 12 Feb 2024 14:45:40 -0800
From: Kees Cook <keescook@...omium.org>
To: Suren Baghdasaryan <surenb@...gle.com>
Cc: akpm@...ux-foundation.org, kent.overstreet@...ux.dev, mhocko@...e.com,
	vbabka@...e.cz, hannes@...xchg.org, roman.gushchin@...ux.dev,
	mgorman@...e.de, dave@...olabs.net, willy@...radead.org,
	liam.howlett@...cle.com, corbet@....net, void@...ifault.com,
	peterz@...radead.org, juri.lelli@...hat.com,
	catalin.marinas@....com, will@...nel.org, arnd@...db.de,
	tglx@...utronix.de, mingo@...hat.com, dave.hansen@...ux.intel.com,
	x86@...nel.org, peterx@...hat.com, david@...hat.com,
	axboe@...nel.dk, mcgrof@...nel.org, masahiroy@...nel.org,
	nathan@...nel.org, dennis@...nel.org, tj@...nel.org,
	muchun.song@...ux.dev, rppt@...nel.org, paulmck@...nel.org,
	pasha.tatashin@...een.com, yosryahmed@...gle.com, yuzhao@...gle.com,
	dhowells@...hat.com, hughd@...gle.com, andreyknvl@...il.com,
	ndesaulniers@...gle.com, vvvvvv@...gle.com,
	gregkh@...uxfoundation.org, ebiggers@...gle.com, ytcoode@...il.com,
	vincent.guittot@...aro.org, dietmar.eggemann@....com,
	rostedt@...dmis.org, bsegall@...gle.com, bristot@...hat.com,
	vschneid@...hat.com, cl@...ux.com, penberg@...nel.org,
	iamjoonsoo.kim@....com, 42.hyeyoo@...il.com, glider@...gle.com,
	elver@...gle.com, dvyukov@...gle.com, shakeelb@...gle.com,
	songmuchun@...edance.com, jbaron@...mai.com, rientjes@...gle.com,
	minchan@...gle.com, kaleshsingh@...gle.com, kernel-team@...roid.com,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	iommu@...ts.linux.dev, linux-arch@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
	linux-modules@...r.kernel.org, kasan-dev@...glegroups.com,
	cgroups@...r.kernel.org
Subject: Re: [PATCH v3 33/35] codetag: debug: mark codetags for reserved
 pages as empty

On Mon, Feb 12, 2024 at 01:39:19PM -0800, Suren Baghdasaryan wrote:
> To avoid debug warnings while freeing reserved pages which were not
> allocated with usual allocators, mark their codetags as empty before
> freeing.

How do these get their codetags to begin with? Regardless:

Reviewed-by: Kees Cook <keescook@...omium.org>

-- 
Kees Cook