linux-kernel - Re: WARNING: at kernel/workqueue.c [was: mmotm 2011-01-06-15-41 uploaded]

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Date:	Tue, 11 Jan 2011 01:31:25 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	Jiri Slaby <jirislaby@...il.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	mm-commits@...r.kernel.org, Tejun Heo <tj@...nel.org>
Subject: Re: WARNING: at kernel/workqueue.c [was: mmotm 2011-01-06-15-41 uploaded]

2011/1/10 Jiri Slaby <jirislaby@...il.com>:
> On 01/07/2011 12:41 AM, akpm@...ux-foundation.org wrote:
>> The mm-of-the-moment snapshot 2011-01-06-15-41 has been uploaded to
>
> Hello, I get this during boot:
> NMI watchdog enabled, takes one hw-pmu counter.
> Booting Node   0, Processors  #1
> CPU1: Thermal LVT vector (0xfa) already installed
> NMI watchdog enabled, takes one hw-pmu counter.
> Brought up 2 CPUs
> Total of 2 processors activated (11970.26 BogoMIPS).
> devtmpfs: initialized
> ------------[ cut here ]------------
> WARNING: at kernel/workqueue.c:1202 worker_enter_idle+0xd0/0x140()
> Hardware name: To Be Filled By O.E.M.
> Modules linked in:
> Pid: 5, comm: kworker/u:0 Not tainted 2.6.37-mm1_64+ #1343
> Call Trace:
>  [<ffffffff8106ad2a>] ? warn_slowpath_common+0x7a/0xb0
>  [<ffffffff8106ad75>] ? warn_slowpath_null+0x15/0x20
>  [<ffffffff8107f690>] ? worker_enter_idle+0xd0/0x140
>  [<ffffffff81081e28>] ? worker_thread+0x208/0x320
>  [<ffffffff81081c20>] ? worker_thread+0x0/0x320
>  [<ffffffff81086436>] ? kthread+0x96/0xa0
>  [<ffffffff81030b14>] ? kernel_thread_helper+0x4/0x10
>  [<ffffffff810863a0>] ? kthread+0x0/0xa0
>  [<ffffffff81030b10>] ? kernel_thread_helper+0x0/0x10
> ---[ end trace 4eaa2a86a8e2da22 ]---
>
> Probably a result of the workqueue rewrite...

Here it is, too.
mmotm-01-06

[    0.735057] input: Power Button as
/devices/LNXSYSTM:00/LNXPWRBN:00/input/input1
[    0.735106] ACPI: Power Button [PWRF]
[    0.735380] ACPI: acpi_idle registered with cpuidle
[    0.737261] ------------[ cut here ]------------
[    0.737270] isapnp: Scanning for PnP cards...
[    0.737341] WARNING: at kernel/workqueue.c:1202
worker_enter_idle+0xc7/0x130()
[    0.737388] Hardware name: 965P-DS3
[    0.737425] Modules linked in:
[    0.737488] Pid: 5, comm: kworker/u:0 Not tainted 2.6.37-mm1+ #2
[    0.737527] Call Trace:
[    0.737567]  [<c014a412>] ? warn_slowpath_common+0x72/0xa0
[    0.737607]  [<c01611c7>] ? worker_enter_idle+0xc7/0x130
[    0.737648]  [<c01611c7>] ? worker_enter_idle+0xc7/0x130
[    0.737688]  [<c014a462>] ? warn_slowpath_null+0x22/0x30
[    0.737728]  [<c01611c7>] ? worker_enter_idle+0xc7/0x130
[    0.737769]  [<c0163e47>] ? worker_thread+0x1d7/0x3a0
[    0.737809]  [<c0163c70>] ? worker_thread+0x0/0x3a0
[    0.737848]  [<c01678c4>] ? kthread+0x74/0x80
[    0.737887]  [<c0167850>] ? kthread+0x0/0x80
[    0.737926]  [<c0103686>] ? kernel_thread_helper+0x6/0x10
[    0.737970] ---[ end trace e93713a9d40cd06c ]---
[    1.090221] isapnp: No Plug & Play device found
[    1.090392] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    1.110781] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[    1.372584] 00:06: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[    1.437762] brd: module loaded






-- 
Kind regards,
Minchan Kim
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