From: Tejun Heo <tj@kernel.org>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: torvalds@linux-foundation.org, linux-kernel@vger.kernel.org,
jiangshanlai@gmail.com, akpm@linux-foundation.org,
kernel-team@fb.com,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Subject: Re: Oops on Power8 (was Re: [PATCH v2 1/7] workqueue: make workqueue available early during boot)
Date: Mon, 10 Oct 2016 09:14:17 -0400 [thread overview]
Message-ID: <20161010131417.GC29742@mtj.duckdns.org> (raw)
In-Reply-To: <20161010130253.GB29742@mtj.duckdns.org>
On Mon, Oct 10, 2016 at 09:02:53AM -0400, Tejun Heo wrote:
> Hello, Michael.
>
> On Mon, Oct 10, 2016 at 09:22:55PM +1100, Michael Ellerman wrote:
> > This patch seems to be causing one of my Power8 boxes not to boot.
> >
> > Specifically commit 3347fa092821 ("workqueue: make workqueue available
> > early during boot") in linux-next.
> >
> > If I revert this on top of next-20161005 then the machine boots again.
> >
> > I've attached the oops below. It looks like the cfs_rq of p->se is NULL?
>
> Hah, weird that it's arch dependent, or maybe it's just different
> config options. Most likely, it's caused by workqueue_init() call
> being moved too early. Can you please try the following patch and see
> whether the problem goes away?
And if it does, can you please post the boot log with kernel boot
option "initcall_debug=1" specified?
Thanks.
--
tejun
next prev parent reply other threads:[~2016-10-10 13:14 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-15 19:30 [PATCHSET wq/for-4.9] workqueue: make workqueue available very early during boot Tejun Heo
2016-09-15 19:30 ` [PATCH 1/7] workqueue: make workqueue available " Tejun Heo
2016-09-17 17:23 ` [PATCH v2 " Tejun Heo
2016-10-10 10:22 ` Oops on Power8 (was Re: [PATCH v2 1/7] workqueue: make workqueue available early during boot) Michael Ellerman
2016-10-10 11:17 ` Balbir Singh
2016-10-10 12:53 ` Tejun Heo
2016-10-10 13:22 ` Balbir Singh
2016-10-10 13:02 ` Tejun Heo
2016-10-10 13:14 ` Tejun Heo [this message]
2016-10-11 11:22 ` Michael Ellerman
2016-10-11 12:21 ` Balbir Singh
2016-10-14 15:08 ` Tejun Heo
2016-10-15 3:43 ` Balbir Singh
2016-10-14 15:07 ` Tejun Heo
2016-10-15 1:25 ` Balbir Singh
2016-10-15 9:48 ` Michael Ellerman
2016-10-17 18:13 ` Tejun Heo
2016-10-17 12:24 ` Michael Ellerman
2016-10-17 12:51 ` Balbir Singh
2016-10-18 2:35 ` Michael Ellerman
2016-10-17 18:15 ` Tejun Heo
2016-10-17 19:30 ` Tejun Heo
2016-10-18 4:37 ` Michael Ellerman
2016-10-18 18:58 ` Tejun Heo
2016-10-19 11:16 ` Michael Ellerman
2016-10-19 16:15 ` [PATCH wq/for-4.10] workqueue: move wq_numa_init() to workqueue_init() Tejun Heo
2016-09-15 19:30 ` [PATCH 2/7] mce, workqueue: remove keventd_up() usage Tejun Heo
2016-09-17 7:56 ` Borislav Petkov
2016-09-17 17:24 ` Tejun Heo
2016-09-17 20:26 ` Borislav Petkov
2016-09-15 19:30 ` [PATCH 3/7] tty, " Tejun Heo
2016-09-15 19:30 ` [PATCH 4/7] power, " Tejun Heo
2016-09-15 23:55 ` Rafael J. Wysocki
2016-09-15 19:30 ` [PATCH 5/7] slab, " Tejun Heo
2016-09-15 19:30 ` Tejun Heo
2016-09-22 8:01 ` Joonsoo Kim
2016-09-22 8:01 ` Joonsoo Kim
2016-09-15 19:30 ` [PATCH 6/7] debugobj, " Tejun Heo
2016-09-15 21:19 ` Thomas Gleixner
2016-09-15 19:30 ` [PATCH 7/7] workqueue: remove keventd_up() Tejun Heo
2016-09-15 19:51 ` [PATCHSET wq/for-4.9] workqueue: make workqueue available very early during boot Linus Torvalds
2016-09-16 19:51 ` Tejun Heo
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