linux-kernel - Re: [PATCH] x86: kmsan: fix boot failure due to instrumentation

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Message-ID: <20240308075823.GCZerFH9Q-vl3FgY-l@fat_crate.local>
Date: Fri, 8 Mar 2024 08:58:23 +0100
From: Borislav Petkov <bp@...en8.de>
To: Changbin Du <changbin.du@...wei.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
	Andy Lutomirski <luto@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Alexander Potapenko <glider@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, kasan-dev@...glegroups.com
Subject: Re: [PATCH] x86: kmsan: fix boot failure due to instrumentation

On Fri, Mar 08, 2024 at 02:10:54PM +0800, Changbin Du wrote:
> find_cc_blob() has instrumentation enabled and panic when accessing shadow
> memory.

Thanks, I was able to reproduce. With KMSAN enabled, a 5sec guest turns
into a 2 minute snooze fest. :-)

Oh well.

-- 
Regards/Gruss,
    Boris.

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