linux-kernel - Re: [PATCH v2] arm: kasan: clear stale stack poison

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Date: Mon, 29 Apr 2024 07:51:49 +0000
From: Boy Wu (吳勃誼) <Boy.Wu@...iatek.com>
To: "linux@...linux.org.uk" <linux@...linux.org.uk>,
	"linus.walleij@...aro.org" <linus.walleij@...aro.org>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
	"andreyknvl@...il.com" <andreyknvl@...il.com>, "dvyukov@...gle.com"
	<dvyukov@...gle.com>, "kasan-dev@...glegroups.com"
	<kasan-dev@...glegroups.com>, Iverlin Wang (王苳霖)
	<Iverlin.Wang@...iatek.com>, "mark.rutland@....com" <mark.rutland@....com>,
	Light Chen (陳昱光) <Light.Chen@...iatek.com>,
	"ryabinin.a.a@...il.com" <ryabinin.a.a@...il.com>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "glider@...gle.com"
	<glider@...gle.com>, "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
	"vincenzo.frascino@....com" <vincenzo.frascino@....com>,
	"angelogioacchino.delregno@...labora.com"
	<angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH v2] arm: kasan: clear stale stack poison

On Sun, 2024-04-28 at 15:45 +0100, Russell King (Oracle) wrote:
>  On Fri, Apr 12, 2024 at 10:37:06AM +0200, Linus Walleij wrote:
> > On Wed, Apr 10, 2024 at 9:31 AM boy.wu <boy.wu@...iatek.com> wrote:
> > 
> > > From: Boy Wu <boy.wu@...iatek.com>
> > >
> > > We found below OOB crash:
> > 
> > Thanks for digging in!
> > 
> > Pleas put this patch into Russell's patch tracker so he can apply
> it:
> > https://www.armlinux.org.uk/developer/patches/
> 
> Is this a bug fix? If so, having a Fixes: tag would be nice...
> 

This is a patch for cpuidle flow when KASAN enable, that is in ARM64
but not in ARM, so add to ARM.

The reference commits did not mention fix any commits.
[1] commit 0d97e6d8024c ("arm64: kasan: clear stale stack poison")
[2] commit d56a9ef84bd0 ("kasan, arm64: unpoison stack only with
CONFIG_KASAN_STACK")