linux-kernel - Re: [PATCH] bus: simple-pm-bus: fix forced runtime PM use

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: <Z69ExkCLfv_xLLUm@hovoldconsulting.com>
Date: Fri, 14 Feb 2025 14:27:34 +0100
From: Johan Hovold <johan@...nel.org>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: Ulf Hansson <ulf.hansson@...aro.org>,
	Johan Hovold <johan+linaro@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org, Liu Ying <victor.liu@....com>
Subject: Re: [PATCH] bus: simple-pm-bus: fix forced runtime PM use

On Fri, Feb 14, 2025 at 02:16:14PM +0100, Geert Uytterhoeven wrote:
> On Fri, 14 Feb 2025 at 13:53, Johan Hovold <johan@...nel.org> wrote:

> > I didn't add a CC stable tag since this currently works, but I still
> > consider it a bug to call these helpers unconditionally when not using
> > runtime PM.
> 
> Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
> 
> > [ And during rc1 these callbacks were suddenly called and triggered a
> > NULL-pointer dereference as you know. [1] ]

> > [1] https://lore.kernel.org/lkml/Z6YcjFBWAVVVANf2@hovoldconsulting.com/
> 
> Thanks, that was the context I needed to raise review priority ;)
> 
> Perhaps Reported-by: and Closes:?

The glitch was only temporary this time and the immediate issue was
addressed by Rafael's partial revert in rc2:

	https://lore.kernel.org/lkml/6137505.lOV4Wx5bFT@rjwysocki.net/

(and which has these tags).

Johan