linux-kernel - Re: [RFC PATCH v1 2/4] arm64: Mark a stack trace unreliable if an EL1 exception frame is detected

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20210401172114.GM4758@sirena.org.uk>
Date:   Thu, 1 Apr 2021 18:21:14 +0100
From:   Mark Brown <broonie@...nel.org>
To:     madvenka@...ux.microsoft.com
Cc:     mark.rutland@....com, jpoimboe@...hat.com, jthierry@...hat.com,
        catalin.marinas@....com, will@...nel.org,
        linux-arm-kernel@...ts.infradead.org,
        live-patching@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v1 2/4] arm64: Mark a stack trace unreliable if an
 EL1 exception frame is detected

On Tue, Mar 30, 2021 at 02:09:53PM -0500, madvenka@...ux.microsoft.com wrote:
> From: "Madhavan T. Venkataraman" <madvenka@...ux.microsoft.com>
> 
> EL1 exceptions can happen on any instruction including instructions in
> the frame pointer prolog or epilog. Depending on where exactly they happen,
> they could render the stack trace unreliable.

Reviewed-by: Mark Brown <broonie@...nel.org>

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)