netdev - Re: [PATCH] wifi: rsi: Do not configure WoWlan in shutdown hook if not enabled

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]

Date: Tue, 30 May 2023 09:37:39 +0200
From: Simon Horman <simon.horman@...igine.com>
To: Marek Vasut <marex@...x.de>
Cc: linux-wireless@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Jilin Yuan <yuanjilin@...rlc.com>,
	Kalle Valo <kvalo@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org
Subject: Re: [PATCH] wifi: rsi: Do not configure WoWlan in shutdown hook if
 not enabled

On Tue, May 30, 2023 at 09:36:36AM +0200, Simon Horman wrote:
> On Sun, May 28, 2023 at 12:28:33AM +0200, Marek Vasut wrote:
> > In case WoWlan was never configured during the operation of the system,
> > the hw->wiphy->wowlan_config will be NULL. rsi_config_wowlan() checks
> > whether wowlan_config is non-NULL and if it is not, then WARNs about it.
> > The warning is valid, as during normal operation the rsi_config_wowlan()
> > should only ever be called with non-NULL wowlan_config. In shutdown this
> > rsi_config_wowlan() should only ever be called if WoWlan was configured
> > before by the user.
> > 
> > Add checks for non-NULL wowlan_config into the shutdown hook. While at it,
> > check whether the wiphy is also non-NULL before accessing wowlan_config .
> > Drop the single-use wowlan_config variable, just inline it into function
> > call.
> > 
> > Fixes: 16bbc3eb8372 ("rsi: fix null pointer dereference during rsi_shutdown()")
> 
> nit: no blank line here

Sigh, there was no blank line here.
Sorry for the noise.

> > Signed-off-by: Marek Vasut <marex@...x.de>
> 
> Reviewed-by: Simon Horman <simon.horman@...igine.com>