linux-kernel - Re: [RFC PATCH] UBSan: run-time undefined behavior sanity checker

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Message-ID: <1414139506040-968477.post@n7.nabble.com>
Date:	Fri, 24 Oct 2014 01:31:46 -0700 (MST)
From:	"y.gribov" <y.gribov@...sung.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH] UBSan: run-time undefined behavior sanity checker

> Unaligned accesses disabled because they are allowed on some arches (see
HAVE_EFFICIENT_UNALIGNED_ACCESS).
> Another reason is that there are to many reports. Not because there are
> lot of bugs, but because
> there are many reports for one bug. 

A side note - unaligned accesses would prevent KASan from doing it's job
well because instrumentation code relies on address alignment when
performing the check.

-Y



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