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

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Message-ID: <1fb57ec2a830deba664379f3e0f480e08e6dec2f.camel@sipsolutions.net>
Date:   Wed, 11 Mar 2020 23:44:37 +0100
From:   Johannes Berg <johannes@...solutions.net>
To:     Patricia Alfonso <trishalfonso@...gle.com>
Cc:     Jeff Dike <jdike@...toit.com>, Richard Weinberger <richard@....at>,
        anton.ivanov@...bridgegreys.com,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Brendan Higgins <brendanhiggins@...gle.com>,
        David Gow <davidgow@...gle.com>,
        kasan-dev <kasan-dev@...glegroups.com>,
        LKML <linux-kernel@...r.kernel.org>, linux-um@...ts.infradead.org
Subject: Re: [PATCH] UML: add support for KASAN under x86_64

On Wed, 2020-03-11 at 15:32 -0700, Patricia Alfonso wrote:

> I'll need some time to investigate these all myself. Having just
> gotten my first module to run about an hour ago, any more information
> about how you got these errors would be helpful so I can try to
> reproduce them on my own.

See the other emails, I was basically just loading random modules. In my
case cfg80211, mac80211, mac80211-hwsim - those are definitely available
without any (virtio) hardware requirements, so you could use them.

Note that doing a bunch of vmalloc would likely result in similar
issues, since the module and vmalloc space is the same on UML.

johannes