linux-kernel - Re: [PATCH 1/2] Revert "drm/fb-helper: Reduce READ_ONCE(master) to lockless

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: <1470981903.26902.9.camel@sipsolutions.net>
Date:	Fri, 12 Aug 2016 08:05:03 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	paulmck@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
	Daniel Vetter <daniel.vetter@...el.com>,
	Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH 1/2] Revert "drm/fb-helper: Reduce READ_ONCE(master) to
 lockless_dereference"


> Initial testing says that the change below must precede the change
> to the definition of lockless_dereference(), so the two should go
> together.

Indeed.

> If my upcoming testing of the two changes together pans out, I will
> give you a Tested-by -- I am guessing that you don't want to wait
> until the next merge window for these changes.

I don't mind hugely since I have a fix now, but this one actually
causes >1K warnings (including some "too many warnings!") for my build
(net/wireless and net/mac80211 only!) and drowns out the real ones...
I'm sure other parts of the tree are similarly affected.

johannes