From: Ingo Molnar <mingo@elte.hu>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Zdenek Kabelac <zdenek.kabelac@gmail.com>,
Jiri Slaby <jirislaby@gmail.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
paulmck@linux.vnet.ibm.com, David Miller <davem@davemloft.net>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-ext4@vger.kernel.org, herbert@gondor.apana.org.au,
Pekka Enberg <penberg@cs.helsinki.fi>,
Christoph Lameter <clameter@sgi.com>
Subject: Re: 2.6.25-git2: BUG: unable to handle kernel paging request at ffffffffffffffff
Date: Wed, 23 Apr 2008 19:40:06 +0200 [thread overview]
Message-ID: <20080423174006.GA2739@elte.hu> (raw)
In-Reply-To: <alpine.LFD.1.10.0804230746480.2779@woody.linux-foundation.org>
* Linus Torvalds <torvalds@linux-foundation.org> wrote:
> > CPU: L2 cache: 4096K
> > CPU: Physical Processor ID: 0
> > CPU: Processor Core ID: 1
> > x86: PAT support disabled.
> > SPIN IRQ ALREADY DISABLED
> > Pid: 0, comm: swapper Not tainted 2.6.25 #57
> >
> > Call Trace:
> > [_spin_lock_irq+126/128] _spin_lock_irq+0x7e/0x80
> > [lock_ipi_call_lock+16/32] lock_ipi_call_lock+0x10/0x20
> > CPU1: Intel(R) Core(TM)2 Duo CPU T7500 @ 2.20GHz
> > [start_secondary+68/206] start_secondary+0x44/0xce
>
> This is indeed an interesting issue: arch/x86/kernel/smpboot.c does an
> IPI call to start_secondary, and yes, it looks suspicious to have that
> lock_ipi_call_lock there (and in particular the unlock_ipi_call_lock
> that enables interrupts within it). Ingo?
hm, irqs already disabled isnt bad in itself and it happens all the
time. The irq enabling in unlock_ipi_call_lock() should be OK.
Any race with irqs there should at most result in a hung or crashed
bootup, not in any memory corruption i believe.
Ingo
next prev parent reply other threads:[~2008-04-23 17:41 UTC|newest]
Thread overview: 211+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-19 13:22 2.6.25-git1: Solid hang on HP nx6325 (64-bit) Rafael J. Wysocki
2008-04-20 19:04 ` 2.6.25-git2: BUG: unable to handle kernel paging request at ffffffffffffffff Rafael J. Wysocki
2008-04-20 19:04 ` Rafael J. Wysocki
2008-04-20 19:14 ` Rafael J. Wysocki
2008-04-20 19:14 ` Rafael J. Wysocki
2008-04-20 21:31 ` Linus Torvalds
2008-04-21 1:18 ` Herbert Xu
2008-04-21 2:08 ` Paul E. McKenney
2008-04-21 4:59 ` Paul E. McKenney
2008-04-21 5:47 ` Paul E. McKenney
2008-04-21 13:00 ` Ingo Molnar
2008-04-21 16:06 ` Linus Torvalds
2008-04-21 16:24 ` Rafael J. Wysocki
2008-04-21 15:49 ` Linus Torvalds
2008-04-21 17:05 ` Paul E. McKenney
2008-04-21 17:30 ` Linus Torvalds
2008-04-21 17:43 ` Paul E. McKenney
2008-04-22 1:03 ` Herbert Xu
2008-04-22 13:36 ` Paul E. McKenney
2008-04-21 16:12 ` Rafael J. Wysocki
2008-04-21 16:54 ` Linus Torvalds
2008-04-21 17:06 ` Jiri Slaby
2008-04-21 17:19 ` Rafael J. Wysocki
2008-04-21 17:48 ` Linus Torvalds
2008-04-21 18:22 ` Rafael J. Wysocki
2008-04-21 18:22 ` Rafael J. Wysocki
2008-04-21 19:38 ` Jiri Slaby
2008-04-21 20:39 ` David Miller
2008-04-21 21:18 ` Jiri Slaby
2008-04-21 21:58 ` Jiri Slaby
2008-04-21 22:26 ` Jiri Slaby
2008-04-21 22:54 ` Paul E. McKenney
2008-04-21 23:02 ` Jiri Slaby
2008-04-21 23:02 ` Jiri Slaby
2008-04-21 23:11 ` Zdenek Kabelac
2008-04-21 23:11 ` Zdenek Kabelac
2008-04-21 23:17 ` Jiri Slaby
2008-04-22 0:54 ` Rafael J. Wysocki
2008-04-22 1:14 ` Linus Torvalds
2008-04-22 1:30 ` Rafael J. Wysocki
2008-04-22 9:49 ` Jiri Slaby
2008-04-22 9:53 ` Ingo Molnar
2008-04-22 18:35 ` Zdenek Kabelac
2008-04-22 18:48 ` Linus Torvalds
2008-04-22 20:34 ` device_pm_add (was: Re: 2.6.25-git2: BUG: unable to handle kernel paging request at ffffffffffffffff) Rafael J. Wysocki
2008-04-22 20:57 ` Rafael J. Wysocki
2008-04-22 20:57 ` Rafael J. Wysocki
2008-04-22 22:11 ` Greg KH
2008-04-22 22:11 ` Greg KH
2008-04-22 20:58 ` Linus Torvalds
2008-04-22 20:58 ` Linus Torvalds
2008-04-22 22:12 ` Greg KH
2008-04-22 22:12 ` Greg KH
2008-04-22 22:48 ` Rafael J. Wysocki
2008-04-22 22:48 ` Rafael J. Wysocki
2008-04-23 0:50 ` Rafael J. Wysocki
2008-04-23 14:56 ` Alan Stern
2008-04-23 14:56 ` Alan Stern
2008-04-23 0:50 ` Rafael J. Wysocki
2008-04-22 20:34 ` Rafael J. Wysocki
2008-04-23 8:50 ` 2.6.25-git2: BUG: unable to handle kernel paging request at ffffffffffffffff Zdenek Kabelac
2008-04-23 8:50 ` Zdenek Kabelac
2008-04-23 15:53 ` Linus Torvalds
2008-04-23 15:53 ` Linus Torvalds
2008-04-23 16:58 ` Pekka Enberg
2008-04-23 16:58 ` Pekka Enberg
2008-04-23 17:28 ` Zdenek Kabelac
2008-04-23 17:28 ` Zdenek Kabelac
2008-04-23 17:40 ` Ingo Molnar [this message]
2008-04-23 18:52 ` Pekka Enberg
2008-04-23 19:05 ` Christoph Lameter
2008-04-23 19:19 ` Pekka J Enberg
2008-04-23 19:28 ` Christoph Lameter
2008-04-23 20:27 ` Zdenek Kabelac
2008-04-24 22:26 ` Jiri Slaby
2008-04-24 22:41 ` Linus Torvalds
2008-04-25 0:57 ` Jiri Slaby
2008-04-24 23:45 ` Linus Torvalds
2008-04-25 7:36 ` Jiri Slaby
2008-04-25 14:09 ` Pavel Machek
2008-04-25 15:30 ` Rafael J. Wysocki
2008-04-25 17:10 ` Jiri Slaby
2008-04-25 9:13 ` David Miller
2008-04-25 12:15 ` Zdenek Kabelac
2008-04-25 12:27 ` Zdenek Kabelac
2008-04-25 15:12 ` [PATCH 1/1] x86: fix text_poke Jiri Slaby
2008-04-28 0:51 ` Jiri Slaby
2008-04-25 15:03 ` Linus Torvalds
2008-04-25 15:17 ` Andi Kleen
2008-04-25 19:36 ` Christoph Lameter
2008-04-26 9:59 ` Andi Kleen
2008-04-26 11:16 ` Jiri Slaby
2008-04-26 11:34 ` Andi Kleen
2008-04-28 20:24 ` VIRTUAL_BUG_ON() Christoph Lameter
2008-05-01 19:22 ` [RFC 1/1] mm: add virt to phys debug Jiri Slaby
2008-05-01 19:22 ` Jiri Slaby
2008-05-01 19:22 ` Jiri Slaby
2008-05-01 20:18 ` Christoph Lameter
2008-05-01 20:18 ` Christoph Lameter
2008-05-06 21:54 ` Jiri Slaby
2008-05-06 21:54 ` Jiri Slaby
2008-05-07 17:30 ` Christoph Lameter
2008-05-07 17:30 ` Christoph Lameter
2008-05-13 14:38 ` Jiri Slaby
2008-05-13 14:38 ` Jiri Slaby
2008-04-25 15:19 ` [PATCH 1/1] x86: fix text_poke Ingo Molnar
2008-04-25 15:26 ` Ingo Molnar
2008-04-25 15:32 ` Ingo Molnar
2008-04-25 15:33 ` Linus Torvalds
2008-04-25 15:48 ` Andi Kleen
2008-04-25 16:06 ` Linus Torvalds
2008-04-25 16:19 ` Andi Kleen
2008-04-25 16:24 ` Linus Torvalds
2008-04-25 16:33 ` Ingo Molnar
2008-04-25 18:13 ` Jeremy Fitzhardinge
2008-05-05 2:36 ` Nick Piggin
2008-04-25 16:30 ` Mathieu Desnoyers
2008-04-25 16:42 ` H. Peter Anvin
2008-04-25 17:09 ` Mathieu Desnoyers
2008-04-25 18:37 ` Mathieu Desnoyers
2008-04-25 18:47 ` H. Peter Anvin
2008-04-25 19:19 ` H. Peter Anvin
2008-04-25 20:04 ` Mathieu Desnoyers
2008-04-25 20:09 ` H. Peter Anvin
2008-04-25 20:18 ` H. Peter Anvin
2008-04-25 20:37 ` Mathieu Desnoyers
2008-04-25 20:41 ` H. Peter Anvin
2008-04-25 20:51 ` Linus Torvalds
2008-04-25 21:12 ` Mathieu Desnoyers
2008-04-25 21:15 ` H. Peter Anvin
2008-04-25 21:47 ` Mathieu Desnoyers
2008-04-25 22:07 ` H. Peter Anvin
2008-04-25 22:30 ` Mathieu Desnoyers
2008-04-25 22:36 ` Linus Torvalds
2008-04-28 20:21 ` Ingo Molnar
2008-04-28 20:55 ` Jeremy Fitzhardinge
2008-04-28 21:01 ` H. Peter Anvin
2008-04-28 22:42 ` Mathieu Desnoyers
2008-04-28 20:43 ` Mathieu Desnoyers
2008-04-28 21:02 ` Jeremy Fitzhardinge
2008-05-04 15:03 ` Mathieu Desnoyers
2008-05-04 16:18 ` H. Peter Anvin
2008-04-25 22:38 ` H. Peter Anvin
2008-04-25 22:04 ` Linus Torvalds
2008-04-25 23:00 ` Mathieu Desnoyers
2008-04-25 23:13 ` Jeremy Fitzhardinge
2008-04-25 23:34 ` Masami Hiramatsu
2008-04-26 6:21 ` Jeremy Fitzhardinge
2008-04-26 11:56 ` Arnaldo Carvalho de Melo
2008-04-26 23:38 ` Jeremy Fitzhardinge
2008-04-26 23:38 ` Jeremy Fitzhardinge
2008-04-27 1:00 ` Arnaldo Carvalho de Melo
2008-04-26 2:12 ` Frank Ch. Eigler
2008-06-05 17:44 ` Frank Ch. Eigler
2008-04-26 6:50 ` Jeremy Fitzhardinge
2008-04-28 0:49 ` Masami Hiramatsu
2008-04-25 21:02 ` David Miller
2008-04-25 21:11 ` H. Peter Anvin
2008-04-25 16:22 ` Ingo Molnar
2008-04-25 16:37 ` Linus Torvalds
2008-04-25 16:43 ` Ingo Molnar
2008-04-25 16:43 ` Ingo Molnar
2008-04-25 16:45 ` Ingo Molnar
2008-04-25 16:51 ` Linus Torvalds
2008-04-25 17:02 ` Ingo Molnar
2008-04-25 17:13 ` Linus Torvalds
2008-04-25 17:26 ` Andi Kleen
2008-04-25 17:29 ` Linus Torvalds
2008-04-25 17:53 ` Ingo Molnar
2008-04-25 18:04 ` Ingo Molnar
2008-04-25 18:09 ` Linus Torvalds
2008-04-25 18:19 ` Ingo Molnar
2008-04-25 18:19 ` Ingo Molnar
2008-04-25 18:56 ` Ingo Molnar
2008-04-25 18:13 ` Ingo Molnar
2008-04-25 16:52 ` Ingo Molnar
2008-04-25 16:56 ` Andi Kleen
2008-04-25 15:50 ` Ingo Molnar
2008-04-25 15:57 ` H. Peter Anvin
2008-04-25 18:53 ` Pavel Machek
2008-04-25 16:11 ` Linus Torvalds
2008-04-25 15:54 ` Mathieu Desnoyers
2008-04-25 15:59 ` Ingo Molnar
2008-04-25 16:11 ` Mathieu Desnoyers
2008-04-25 15:27 ` Andi Kleen
2008-04-25 20:18 ` David Miller
2008-04-25 15:23 ` Jiri Slaby
2008-04-25 1:35 ` 2.6.25-git2: BUG: unable to handle kernel paging request at ffffffffffffffff David Miller
2008-04-25 1:48 ` Linus Torvalds
2008-04-25 1:57 ` David Miller
2008-04-25 7:41 ` Jiri Slaby
2008-04-25 7:45 ` David Miller
2008-04-25 8:02 ` Jiri Slaby
2008-04-25 8:18 ` pci commands resume order [Was: 2.6.25-git2: BUG: unable to handle kernel paging request at ffffffffffffffff] Jiri Slaby
2008-04-25 17:11 ` Jesse Barnes
2008-04-25 10:53 ` 2.6.25-git2: BUG: unable to handle kernel paging request at ffffffffffffffff Craig Schlenter
2008-04-25 7:42 ` Jiri Slaby
2008-04-25 7:49 ` David Miller
2008-04-25 7:56 ` Jiri Slaby
2008-04-25 7:58 ` David Miller
2008-04-25 8:00 ` Jiri Slaby
2008-04-25 15:47 ` Randy Dunlap
2008-04-22 21:46 ` Rafael J. Wysocki
2008-04-22 19:09 ` Ingo Molnar
2008-04-22 1:15 ` Rafael J. Wysocki
2008-04-22 1:25 ` [ProbableSpam]Re: " Paul E. McKenney
2008-04-21 21:19 ` Linus Torvalds
2008-04-21 21:54 ` David Miller
2008-04-21 13:17 ` Ingo Molnar
2008-04-21 13:35 ` Rafael J. Wysocki
2008-04-21 18:56 ` Ingo Molnar
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