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

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Message-ID: <CACRpkdbpnT3G4EY_cgQ0dj93F6E6Kr5hW4yKD0vOpS7Zb8fUxA@mail.gmail.com>
Date:   Fri, 16 Sep 2022 13:15:50 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Alexander A Sverdlin <alexander.sverdlin@...ia.com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        florian.fainelli@...adcom.com,
        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 Wed, Jul 6, 2022 at 6:33 PM Alexander A Sverdlin
<alexander.sverdlin@...ia.com> 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>

This looks correct to me.
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Please add this to Russell's patch tracker.

Yours,
Linus Walleij