linux-kernel - Re: [PATCH v2 1/2] kasan/hw-tags: introduce kasan.store

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: <aJ9IdVsSxppYh2QC@e129823.arm.com>
Date: Fri, 15 Aug 2025 15:47:17 +0100
From: Yeoreum Yun <yeoreum.yun@....com>
To: Catalin Marinas <catalin.marinas@....com>
Cc: ryabinin.a.a@...il.com, glider@...gle.com, andreyknvl@...il.com,
	dvyukov@...gle.com, vincenzo.frascino@....com, corbet@....net,
	will@...nel.org, akpm@...ux-foundation.org,
	scott@...amperecomputing.com, jhubbard@...dia.com,
	pankaj.gupta@....com, leitao@...ian.org, kaleshsingh@...gle.com,
	maz@...nel.org, broonie@...nel.org, oliver.upton@...ux.dev,
	james.morse@....com, ardb@...nel.org,
	hardevsinh.palaniya@...iconsignals.io, david@...hat.com,
	yang@...amperecomputing.com, kasan-dev@...glegroups.com,
	workflows@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-mm@...ck.org
Subject: Re: [PATCH v2 1/2] kasan/hw-tags: introduce kasan.store_only option

[...]

> If we do something like mte_enable_kernel_asymm(), that one doesn't
> return any error, just fall back to the default mode.

But, in case of mte_enable_kernel_asymm() need return to
change kasan_flag_write_only = false when it doesn't support which
used in KASAN Kunit test.

If we don't return anything, when user set the write_only but HW doesn't
support it, KUNIT test get failure since kasan_write_only_enabled()
return true thou HW doesn't support it.

[...]

Thanks.
--
Sincerely,
Yeoreum Yun