linux-kernel - Re: [PATCH 2/2] drm/nouveau/clk: avoid usage of list iterator after loop

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] [day] [month] [year] [list]

Date:   Tue, 07 Mar 2023 17:50:30 -0500
From:   Lyude Paul <lyude@...hat.com>
To:     Jakob Koschel <jkl820.git@...il.com>,
        Ben Skeggs <bskeggs@...hat.com>,
        Karol Herbst <kherbst@...hat.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        Pietro Borrello <borrello@...g.uniroma1.it>,
        Cristiano Giuffrida <c.giuffrida@...nl>,
        "Bos, H.J." <h.j.bos@...nl>
Subject: Re: [PATCH 2/2] drm/nouveau/clk: avoid usage of list iterator after
 loop

On Wed, 2023-03-01 at 18:25 +0100, Jakob Koschel wrote:
> +		}
>  	}
>  
> +	BUG_ON(!pstate);
>  	nvkm_debug(subdev, "setting performance state %d\n", pstatei);
>  	clk->pstate = pstatei;

We should probably also replace this with

	if (WARN_ON(!pstate)
		return -EINVAL;

-- 
Cheers,
 Lyude Paul (she/her)
 Software Engineer at Red Hat