linux-kernel - Re: [PATCH v2 2/2] UML: add support for KASAN under x86

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Message-ID: <b65bd540eae2e593f6d9eb21b6c7d9a06a2809fb.camel@sipsolutions.net>
Date:   Sun, 29 May 2022 19:55:57 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     David Gow <davidgow@...gle.com>,
        Vincent Whitchurch <vincent.whitchurch@...s.com>,
        Patricia Alfonso <trishalfonso@...gle.com>,
        Jeff Dike <jdike@...toit.com>,
        Richard Weinberger <richard@....at>,
        anton.ivanov@...bridgegreys.com,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Brendan Higgins <brendanhiggins@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Andrey Ryabinin <ryabinin.a.a@...il.com>
Cc:     kasan-dev <kasan-dev@...glegroups.com>,
        linux-um@...ts.infradead.org, LKML <linux-kernel@...r.kernel.org>,
        Daniel Latypov <dlatypov@...gle.com>, linux-mm@...ck.org
Subject: Re: [PATCH v2 2/2] UML: add support for KASAN under x86_64

On Fri, 2022-05-27 at 22:14 +0200, Johannes Berg wrote:
> On Fri, 2022-05-27 at 11:56 -0700, David Gow wrote:
> > 
> > This is v2 of the KASAN/UML port. It should be ready to go.
> 
> Nice, thanks a lot! :)
> 
> > It does benefit significantly from the following patches:
> > - Bugfix for memory corruption, needed for KASAN_STACK support:
> > https://lore.kernel.org/lkml/20220523140403.2361040-1-vincent.whitchurch@axis.com/
> 
> Btw, oddly enough, I don't seem to actually see this (tried gcc 10.3 and
> 11.3 so far) - is there anything you know about compiler versions
> related to this perhaps? Or clang only?
> 

I do see it on gcc (Debian 10.2.1-6) 10.2.1 20210110, but that was a
different .config too ... strange.

johannes