linux-kernel - Re: [PATCH] ARM: module: Teach unwinder about PLTs

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <29684681-2f0f-e887-20d9-dddda4977512@gmail.com>
Date:   Wed, 6 Jul 2022 11:09:48 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Alexander A Sverdlin <alexander.sverdlin@...ia.com>,
        linux-arm-kernel@...ts.infradead.org
Cc:     Kursad Oney <kursad.oney@...adcom.com>,
        Russell King <linux@...linux.org.uk>,
        Ard Biesheuvel <ardb@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: module: Teach unwinder about PLTs

On 7/6/22 09:31, Alexander A Sverdlin wrote:
> From: Alexander Sverdlin <alexander.sverdlin@...ia.com>
> 
> "unwind: Index not found eef26358" warnings keep popping up on
> CONFIG_ARM_MODULE_PLTS-enabled systems if the PC points to a PLT veneer.
> Teach the unwinder how to deal with them, taking into account they don't
> change state of the stack or register file except loading PC.
> 
> Tested-by: Kursad Oney <kursad.oney@...adcom.com>
> Link: https://lore.kernel.org/linux-arm-kernel/20200402153845.30985-1-kursad.oney@broadcom.com/
> Signed-off-by: Alexander Sverdlin <alexander.sverdlin@...ia.com>

I would be inclined to slap a Fixes tag to this patch so we get it back 
ported where appropriate, however it is not clear to me which specific
commit(s) we should be listing here.

Thanks Alexander!
-- 
Florian