linux-kernel - Re: [ANNOUNCE] 2.6.33.5-rt23

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: <alpine.LFD.2.00.1006141534050.3026@localhost.localdomain>
Date:	Mon, 14 Jun 2010 15:34:25 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Will Schmidt <will_schmidt@...t.ibm.com>
cc:	LKML <linux-kernel@...r.kernel.org>,
	rt-users <linux-rt-users@...r.kernel.org>,
	John Stultz <johnstul@...ibm.com>,
	Nick Piggin <npiggin@...e.de>
Subject: Re: [ANNOUNCE] 2.6.33.5-rt23

On Thu, 10 Jun 2010, Will Schmidt wrote:

> On Thu, 2010-06-10 at 08:07 +0200, Thomas Gleixner wrote:
> > On Wed, 9 Jun 2010, Will Schmidt wrote:
> > 
> > > On Wed, 2010-06-09 at 18:44 +0200, Thomas Gleixner wrote:
> > > I'm still on 2.6.33.5-rt22 on powerpc, and have run into a couple
> > > "sleeping function called from invalid context..." BUGs.   The first was
> > > during system boot, second during a 'make'.
> > > 
> > > relevant code paths don't seem to have changed between -rt22 and -rt23,
> > > so I think still valid.. :-)  
> > > 
> > > This is on a POWER7 system, which may have opened up some timing
> > > windows, wrt previous runs on POWER6 systems.
> > > 
> > > 
> > > BUG: sleeping function called from invalid context at
> > > kernel/rtmutex.c:684
> > 
> > > [c000000078cf2cf0] [c000000000131a04] .irq_to_desc_alloc_node+0xdc/0x2b8
> > 
> > Grr. I thought I had the SPARSE_IRQ stuff disabled on -rt, but seems
> > it came back somehow. Can you disable that, or does you machine depend
> > on it ?
> 
> I'm not sure whether it is required by the architecture.  I do see that
> SPARSE_IRQ is disabled in arch/x86/Kconfig with a !PREEMPT_RT, but I
> don't see an equivalent 'disable' in arch/powerpc/Kconfig.  

Can you disable it ?

Thanks,

	tglx
--
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/