linux-kernel - Re: [PATCH v4 00/12] mm/kasan: make kasan=on|off work for all three modes

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Message-ID: <aUtd6es8UC0lNf/9@MiWiFi-R3L-srv>
Date: Wed, 24 Dec 2025 11:28:41 +0800
From: Baoquan He <bhe@...hat.com>
To: Andrey Konovalov <andreyknvl@...il.com>
Cc: linux-mm@...ck.org, ryabinin.a.a@...il.com, glider@...gle.com,
	dvyukov@...gle.com, vincenzo.frascino@....com,
	akpm@...ux-foundation.org, kasan-dev@...glegroups.com,
	linux-kernel@...r.kernel.org, kexec@...ts.infradead.org,
	elver@...gle.com, sj@...nel.org, lorenzo.stoakes@...cle.com,
	snovitoll@...il.com, christophe.leroy@...roup.eu
Subject: Re: [PATCH v4 00/12] mm/kasan: make kasan=on|off work for all three
 modes

Hi Andrey,

On 12/04/25 at 05:38pm, Andrey Konovalov wrote:
> On Fri, Nov 28, 2025 at 4:33 AM Baoquan He <bhe@...hat.com> wrote:
> >
...snip...
> > Testing:
> > ========
> > - Testing on x86_64 and arm64 for generic mode passed when kasan=on or
> >   kasan=off.
> >
> > - Testing on arm64 with sw_tags mode passed when kasan=off is set. But
> >   when I tried to test sw_tags on arm64, the system bootup failed. It's
> >   not introduced by my patchset, the original code has the bug. I have
> >   reported it to upstream.
> >   - System is broken in KASAN sw_tags mode during bootup
> >     - https://lore.kernel.org/all/aSXKqJTkZPNskFop@MiWiFi-R3L-srv/T/#u
> 
> This will hopefully be fixed soon, so you'll be able to test.

Do you have the patch link of the fix on sw_tags breakage?

I am organizing patches and testing them for reposting, but still see
the sw_tags breakage during boot on arm64 system. If you have the
pointer about the fix, I can grab the possible unmature code change to
make sw_tags mode work to finish my testing.

Thanks
Baoquan