linux-kernel - Re: Linux 3.19-rc5

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Message-ID: <CA+55aFzWGCO16v3NL7SqgBnQQrwpwCTvFZR=+3x89Hg0KzJtxg@mail.gmail.com>
Date:	Thu, 29 Jan 2015 17:12:11 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	Peter Hurley <peter@...leysoftware.com>,
	Davidlohr Bueso <dave@...olabs.net>,
	Peter Zijlstra <peterz@...radead.org>,
	Bruno Prémont <bonbons@...ux-vserver.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ilya Dryomov <ilya.dryomov@...tank.com>,
	Mike Galbraith <umgwanakikbuti@...il.com>,
	Oleg Nesterov <oleg@...hat.com>
Subject: Re: Linux 3.19-rc5

On Thu, Jan 29, 2015 at 5:22 PM, Rafael J. Wysocki <rjw@...ysocki.net> wrote:
> On Wednesday, January 21, 2015 05:54:00 PM Peter Hurley wrote:
>>
>> Yeah, but the debug check is triggering worse behavior, requiring
>> bisecting back to the debug commit.
>
> Yes, it is.
>
> So I'm wondering is anyone is working on fixing this in any way?
>
> It kind of sucks when this is happening on an otherwise perfectly usable
> old(ish) machine ...

The WARN() was already changed to a WARN_ONCE().

So that debug check doesn't cause problems any more. If somebody is
bisecting something else, and the WARN() is a problem for those
intermediate kernels, then just disabling CONFIG_DEBUG_ATOMIC_SLEEP
should get you past that point.

IOW, this really shouldn't be an issue.

Does the pccard thing still not work?

                           Linus
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