From: Jens Axboe <jens.axboe@oracle.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Dhaval Giani <dhaval@linux.vnet.ibm.com>,
Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linuxppc-dev@ozlabs.org, Ingo Molnar <mingo@elte.hu>,
Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>,
Balbir Singh <balbir@linux.vnet.ibm.com>
Subject: Re: [BUG] Linux 2.6.25-rc2 - Regression from 2.6.24-rc1-git1 softlockup while bootup on powerpc
Date: Tue, 19 Feb 2008 10:09:23 +0100 [thread overview]
Message-ID: <20080219090923.GR23197@kernel.dk> (raw)
In-Reply-To: <20080219180723.e742a582.kamezawa.hiroyu@jp.fujitsu.com>
On Tue, Feb 19 2008, KAMEZAWA Hiroyuki wrote:
> On Tue, 19 Feb 2008 09:58:38 +0100
> Jens Axboe <jens.axboe@oracle.com> wrote:
> > > when I inserted printk here
> > > ==
> > > for (i = 0; i < nr; i++)
> > > func(ioc, cics[i]);
> > > printk("%d %lx\n", nr, index);
> > > ==
> > > index was always "1" and nr was always 32.
> > >
> > > So, cics[31]->key was always NULL when index=1 is passed to
> > > radix_tree_gang_lookup().
> >
> > Hang on, it returned 32? It should not return more than 16, since that
> > is what we have room for and asked for.
> sorry. Of course, it was 16 ;(
I expected so, otherwise we would have had far more serious problems :-)
> your patch works well. thank you.
It's committed now and posted in the relevant bugzilla as well (#9948).
--
Jens Axboe
WARNING: multiple messages have this Message-ID (diff)
From: Jens Axboe <jens.axboe@oracle.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linuxppc-dev@ozlabs.org, Ingo Molnar <mingo@elte.hu>,
Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>,
Dhaval Giani <dhaval@linux.vnet.ibm.com>,
Andy Whitcroft <apw@shadowen.org>,
Balbir Singh <balbir@linux.vnet.ibm.com>
Subject: Re: [BUG] Linux 2.6.25-rc2 - Regression from 2.6.24-rc1-git1 softlockup while bootup on powerpc
Date: Tue, 19 Feb 2008 10:09:23 +0100 [thread overview]
Message-ID: <20080219090923.GR23197@kernel.dk> (raw)
In-Reply-To: <20080219180723.e742a582.kamezawa.hiroyu@jp.fujitsu.com>
On Tue, Feb 19 2008, KAMEZAWA Hiroyuki wrote:
> On Tue, 19 Feb 2008 09:58:38 +0100
> Jens Axboe <jens.axboe@oracle.com> wrote:
> > > when I inserted printk here
> > > ==
> > > for (i = 0; i < nr; i++)
> > > func(ioc, cics[i]);
> > > printk("%d %lx\n", nr, index);
> > > ==
> > > index was always "1" and nr was always 32.
> > >
> > > So, cics[31]->key was always NULL when index=1 is passed to
> > > radix_tree_gang_lookup().
> >
> > Hang on, it returned 32? It should not return more than 16, since that
> > is what we have room for and asked for.
> sorry. Of course, it was 16 ;(
I expected so, otherwise we would have had far more serious problems :-)
> your patch works well. thank you.
It's committed now and posted in the relevant bugzilla as well (#9948).
--
Jens Axboe
next prev parent reply other threads:[~2008-02-19 9:09 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-15 21:23 Linux 2.6.25-rc2 Linus Torvalds
2008-02-16 2:08 ` Rafael J. Wysocki
2008-02-16 5:44 ` [BUG] Linux 2.6.25-rc2 - Kernel Ooops while running dbench Kamalesh Babulal
2008-02-18 12:59 ` Andrew Morton
2008-02-18 12:59 ` Andrew Morton
2008-02-18 14:25 ` Jeff Garzik
2008-02-18 16:11 ` Frans Pop
2008-02-18 16:11 ` Frans Pop
2008-03-03 11:51 ` Pekka Enberg
2008-03-03 11:51 ` Pekka Enberg
2008-03-04 4:03 ` Kamalesh Babulal
2008-03-04 4:03 ` Kamalesh Babulal
2008-02-16 6:10 ` [BUG] Linux 2.6.25-rc2 - Regression from 2.6.24-rc1-git1 softlockup while bootup on powerpc Kamalesh Babulal
2008-02-16 6:10 ` Kamalesh Babulal
2008-02-17 19:29 ` Jens Axboe
2008-02-17 19:29 ` Jens Axboe
2008-02-19 8:04 ` KAMEZAWA Hiroyuki
2008-02-19 8:04 ` KAMEZAWA Hiroyuki
2008-02-19 8:36 ` Jens Axboe
2008-02-19 8:36 ` Jens Axboe
2008-02-19 8:47 ` KAMEZAWA Hiroyuki
2008-02-19 8:47 ` KAMEZAWA Hiroyuki
2008-02-19 8:58 ` Jens Axboe
2008-02-19 8:58 ` Jens Axboe
2008-02-19 9:07 ` KAMEZAWA Hiroyuki
2008-02-19 9:07 ` KAMEZAWA Hiroyuki
2008-02-19 9:09 ` Jens Axboe [this message]
2008-02-19 9:09 ` Jens Axboe
2008-02-19 9:02 ` KAMEZAWA Hiroyuki
2008-02-19 9:02 ` KAMEZAWA Hiroyuki
2008-02-19 9:01 ` Jens Axboe
2008-02-19 9:01 ` Jens Axboe
2008-02-19 13:19 ` Kamalesh Babulal
2008-02-19 13:19 ` Kamalesh Babulal
2008-02-22 7:24 ` Andrew Morton
2008-02-22 7:24 ` Andrew Morton
2008-02-22 7:40 ` Jens Axboe
2008-02-22 7:40 ` Jens Axboe
2008-02-17 20:08 ` Rafael J. Wysocki
2008-02-17 20:08 ` Rafael J. Wysocki
2008-02-16 16:52 ` Linux 2.6.25-rc2 Jan Engelhardt
2008-02-16 19:14 ` Linux 2.6.25-rc2 regression: LVM cannot find volume group Tilman Schmidt
2008-02-16 20:12 ` Alan Cox
2008-02-16 22:37 ` Jiri Slaby
2008-02-18 0:57 ` Tilman Schmidt
2008-02-18 1:22 ` Jeff Chua
2008-02-18 10:35 ` Tilman Schmidt
2008-02-19 1:53 ` Alasdair G Kergon
2008-02-19 8:56 ` Tilman Schmidt
2008-02-16 21:38 ` Linux 2.6.25-rc2 Torsten Kaiser
2008-02-17 20:25 ` Rafael J. Wysocki
2008-02-17 21:32 ` Torsten Kaiser
2008-02-18 23:54 ` Linus Torvalds
2008-02-19 6:44 ` Torsten Kaiser
2008-02-19 6:11 ` Ingo Molnar
2008-02-19 6:54 ` Torsten Kaiser
2008-02-19 7:21 ` Pekka Enberg
2008-02-19 10:27 ` Ingo Molnar
2008-02-19 10:45 ` Pekka Enberg
2008-02-19 13:02 ` Mathieu Desnoyers
2008-02-19 14:00 ` Ingo Molnar
2008-02-19 14:02 ` Mathieu Desnoyers
2008-02-19 14:21 ` Pekka Enberg
2008-02-19 14:38 ` Pekka Enberg
2008-02-19 14:55 ` Ingo Molnar
2008-02-19 14:57 ` Ingo Molnar
2008-02-19 15:54 ` Pekka Enberg
2008-02-19 15:52 ` Pekka Enberg
2008-02-20 0:36 ` Zhang, Yanmin
2008-02-20 2:08 ` Zhang, Yanmin
2008-02-20 6:53 ` Zhang, Yanmin
2008-02-20 7:10 ` Pekka Enberg
2008-02-19 16:20 ` Linus Torvalds
2008-02-19 16:45 ` Ingo Molnar
2008-02-19 16:48 ` Ingo Molnar
2008-02-19 19:27 ` Torsten Kaiser
2008-02-19 20:08 ` Mathieu Desnoyers
2008-02-27 23:32 ` Christoph Lameter
2008-02-28 1:57 ` Andrew Morton
2008-02-28 2:43 ` Christoph Lameter
2008-02-28 8:14 ` Ingo Molnar
2008-02-28 11:15 ` Alan Cox
2008-02-28 11:13 ` Jiri Kosina
2008-02-19 16:27 ` Eric Dumazet
2008-02-19 16:38 ` Linus Torvalds
2008-02-19 20:03 ` Mathieu Desnoyers
2008-02-27 23:34 ` Christoph Lameter
2008-02-28 5:55 ` [PATCH] Implement slub fastpath in terms of freebase and freeoffset Mathieu Desnoyers
2008-02-28 19:08 ` Christoph Lameter
2008-02-28 23:25 ` Mathieu Desnoyers
2008-02-29 0:57 ` Christoph Lameter
2008-02-29 1:56 ` Mathieu Desnoyers
2008-02-29 2:12 ` Christoph Lameter
2008-02-29 3:32 ` Mathieu Desnoyers
2008-02-29 5:11 ` Christoph Lameter
2008-02-29 13:03 ` Mathieu Desnoyers
2008-02-29 19:57 ` Christoph Lameter
2008-02-29 13:28 ` [PATCH] Slub Freeoffset check overflow Mathieu Desnoyers
2008-03-04 6:17 ` [PATCH] Slub Freeoffset check overflow (updated) Mathieu Desnoyers
2008-03-04 7:15 ` Christoph Lameter
2008-02-27 23:32 ` Linux 2.6.25-rc2 Christoph Lameter
2008-02-19 18:39 ` Torsten Kaiser
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