linux-kernel - Re: 2.6.21-rc5-mm1

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: <20070329194048.GG4892@waste.org>
Date:	Thu, 29 Mar 2007 14:40:49 -0500
From:	Matt Mackall <mpm@...enic.com>
To:	Mariusz Kozłowski <m.kozlowski@...land.pl>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Adrian Bunk <bunk@...sta.de>, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	john stultz <johnstul@...ibm.com>
Subject: Re: 2.6.21-rc5-mm1

On Thu, Mar 29, 2007 at 09:02:56PM +0200, Mariusz Kozłowski wrote:
> > > > > This is verified and repeatable _every_ single time I tried. 
> > > > > Unfortunately the last thing seen on the screen before system is 
> > > > > frozen is 'eth0: link down'. So my guess is that when hunting for 
> > > > > hangs I found something else that can hang my laptop (netconsole 
> > > > > that is).
> > > > 
> > > > fix-sysfs-reclaim-crash.patch is known-bad.  Did you try reverting 
> > > > that?
> > > 
> > > Yes, just tested it. Sorry. It doesn't change anything.
> > 
> > could you try a !CONFIG_SMP kernel to make sure it's not some 
> > self-locking of netconsole that is interfering? (Is it perhaps the 
> > 'eth0: link down' message that is trigger from within netconsole?)
> 
> This is from .config:
> 
> # CONFIG_SMP is not set
> 
> Can this be that 'link down' is emitted by netconsole when the link is
> already down and kernel gets locked? Does it make any sense?

Yes, that's probably exactly the problem. But it probably involves locks.

I think a preemptible kernel can also cause the problem?

-- 
Mathematics is the supreme nostalgia of our time.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/