linux-kernel - Re: [RFC PATCH v4 2/2] arm64: Create a list of SYM_CODE functions, blacklist them in the unwinder

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Message-ID: <20210519192730.GI4224@sirena.org.uk>
Date:   Wed, 19 May 2021 20:27:30 +0100
From:   Mark Brown <broonie@...nel.org>
To:     madvenka@...ux.microsoft.com
Cc:     mark.rutland@....com, jpoimboe@...hat.com, ardb@...nel.org,
        jthierry@...hat.com, catalin.marinas@....com, will@...nel.org,
        jmorris@...ei.org, pasha.tatashin@...een.com,
        linux-arm-kernel@...ts.infradead.org,
        live-patching@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v4 2/2] arm64: Create a list of SYM_CODE functions,
 blacklist them in the unwinder

On Sat, May 15, 2021 at 11:00:18PM -0500, madvenka@...ux.microsoft.com wrote:
> From: "Madhavan T. Venkataraman" <madvenka@...ux.microsoft.com>
> 
> The unwinder should check if the return PC falls in any function that
> is considered unreliable from an unwinding perspective. If it does,
> mark the stack trace unreliable.

Other than the naming issue this makes sense to me, I'll try to go
through the first patch properly in the next few days.

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