* Fwd: BUG: scheduling while atomic: chcpu/6197/0x00000002
[not found] ` <4FEAF165.9090008@med.uni-frankfurt.de>
@ 2012-06-27 12:26 ` richard -rw- weinberger
2012-06-27 12:37 ` Steven Rostedt
0 siblings, 1 reply; 5+ messages in thread
From: richard -rw- weinberger @ 2012-06-27 12:26 UTC (permalink / raw)
To: sattler; +Cc: Thomas Gleixner, Steven Rostedt, rt-users
CC'ing the right guys...
---------- Forwarded message ----------
From: Thomas Sattler <sattler@med.uni-frankfurt.de>
Date: Wed, Jun 27, 2012 at 1:41 PM
Subject: Re: BUG: scheduling while atomic: chcpu/6197/0x00000002
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>, Thomas Gleixner <tglx@linutronix.de>
Linux dragon 3.4.4-rt13 #2 SMP PREEMPT Tue Jun 26 12:22:23 CEST 2012
i686 Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz GenuineIntel GNU/Linux
still BUG message in dmesg:
[ 105.585086] BUG: scheduling while atomic: chcpu/2817/0x00000002
[ 105.585090] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd ehci_hcd 3c59x usbcore e1000e mii usb_common sg
[ 105.585109] Pid: 2817, comm: chcpu Not tainted 3.4.4-rt13 #2
[ 105.585111] Call Trace:
[ 105.585119] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 105.585124] [<c1355474>] __schedule+0x68/0x571
[ 105.585130] [<c1045840>] ? enqueue_entity+0x313/0x3d8
[ 105.585134] [<c1355a22>] schedule+0x60/0x70
[ 105.585138] [<c1354a42>] schedule_timeout+0x17/0x160
[ 105.585142] [<c103ed57>] ? check_preempt_curr+0x29/0x64
[ 105.585146] [<c135532d>] wait_for_common+0xa3/0xff
[ 105.585150] [<c10412e2>] ? try_to_wake_up+0x391/0x391
[ 105.585154] [<c135540a>] wait_for_completion+0x12/0x14
[ 105.585158] [<c103781c>] kthread_create_on_node+0x71/0xb5
[ 105.585162] [<c102542c>] ? put_online_cpus+0x44/0x44
[ 105.585167] [<c1350101>] ? init_amd+0x42f/0x64f
[ 105.585172] [<c134727f>] _cpu_down+0x106/0x2b4
[ 105.585176] [<c102542c>] ? put_online_cpus+0x44/0x44
[ 105.585180] [<c1347452>] cpu_down+0x25/0x34
[ 105.585183] [<c1348a96>] store_online+0x29/0x70
[ 105.585187] [<c1348a6d>] ? acpi_processor_start+0xf7/0xf7
[ 105.585192] [<c127b0ef>] dev_attr_store+0x1b/0x23
[ 105.585197] [<c10eb73e>] sysfs_write_file+0xae/0xe7
[ 105.585201] [<c10ab9b6>] vfs_write+0x8c/0x122
[ 105.585205] [<c10eb690>] ? sysfs_poll+0x77/0x77
[ 105.585209] [<c10abc07>] sys_write+0x3b/0x60
[ 105.585214] [<c1357963>] sysenter_do_call+0x12/0x2c
[ 105.585242] BUG: scheduling while atomic: chcpu/2817/0x00000002
[ 105.585244] Modules linked in: loop rfcomm bnep btusb hid_microsoft
usbhid hid uhci_hcd ehci_hcd 3c59x usbcore e1000e mii usb_common sg
[ 105.585260] Pid: 2817, comm: chcpu Not tainted 3.4.4-rt13 #2
[ 105.585262] Call Trace:
[ 105.585266] [<c103df4d>] __schedule_bug+0x3d/0x42
[ 105.585270] [<c1355474>] __schedule+0x68/0x571
[ 105.585275] [<c1356ba1>] ? _raw_spin_unlock_irqrestore+0x1a/0x2f
[ 105.585279] [<c103a992>] ? __hrtimer_start_range_ns+0x2cf/0x2f6
[ 105.585283] [<c1355a22>] schedule+0x60/0x70
[ 105.585287] [<c1354f2a>] schedule_hrtimeout_range_clock+0xc5/0xec
[ 105.585291] [<c103a202>] ? update_rmtp+0x68/0x68
[ 105.585295] [<c1354f5b>] schedule_hrtimeout_range+0xa/0xc
[ 105.585299] [<c1354f69>] schedule_hrtimeout+0xc/0xe
[ 105.585303] [<c103f197>] wait_task_inactive+0xc5/0xd6
[ 105.585307] [<c1037773>] kthread_bind+0x13/0x4b
[ 105.585312] [<c134729a>] _cpu_down+0x121/0x2b4
[ 105.585316] [<c1347452>] cpu_down+0x25/0x34
[ 105.585319] [<c1348a96>] store_online+0x29/0x70
[ 105.585323] [<c1348a6d>] ? acpi_processor_start+0xf7/0xf7
[ 105.585327] [<c127b0ef>] dev_attr_store+0x1b/0x23
[ 105.585331] [<c10eb73e>] sysfs_write_file+0xae/0xe7
[ 105.585335] [<c10ab9b6>] vfs_write+0x8c/0x122
[ 105.585339] [<c10eb690>] ? sysfs_poll+0x77/0x77
[ 105.585342] [<c10abc07>] sys_write+0x3b/0x60
[ 105.585347] [<c1357963>] sysenter_do_call+0x12/0x2c
[...]
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--
Thanks,
//richard
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Fwd: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-27 12:26 ` Fwd: BUG: scheduling while atomic: chcpu/6197/0x00000002 richard -rw- weinberger
@ 2012-06-27 12:37 ` Steven Rostedt
2012-06-27 13:32 ` Thomas Sattler
0 siblings, 1 reply; 5+ messages in thread
From: Steven Rostedt @ 2012-06-27 12:37 UTC (permalink / raw)
To: richard -rw- weinberger; +Cc: sattler, Thomas Gleixner, rt-users
On Wed, 2012-06-27 at 14:26 +0200, richard -rw- weinberger wrote:
> [ 105.585086] BUG: scheduling while atomic: chcpu/2817/0x00000002
> [ 105.585090] Modules linked in: loop rfcomm bnep btusb hid_microsoft
> usbhid hid uhci_hcd ehci_hcd 3c59x usbcore e1000e mii usb_common sg
> [ 105.585109] Pid: 2817, comm: chcpu Not tainted 3.4.4-rt13 #2
> [ 105.585111] Call Trace:
> [ 105.585119] [<c103df4d>] __schedule_bug+0x3d/0x42
> [ 105.585124] [<c1355474>] __schedule+0x68/0x571
> [ 105.585130] [<c1045840>] ? enqueue_entity+0x313/0x3d8
> [ 105.585134] [<c1355a22>] schedule+0x60/0x70
> [ 105.585138] [<c1354a42>] schedule_timeout+0x17/0x160
> [ 105.585142] [<c103ed57>] ? check_preempt_curr+0x29/0x64
> [ 105.585146] [<c135532d>] wait_for_common+0xa3/0xff
> [ 105.585150] [<c10412e2>] ? try_to_wake_up+0x391/0x391
> [ 105.585154] [<c135540a>] wait_for_completion+0x12/0x14
> [ 105.585158] [<c103781c>] kthread_create_on_node+0x71/0xb5
> [ 105.585162] [<c102542c>] ? put_online_cpus+0x44/0x44
> [ 105.585167] [<c1350101>] ? init_amd+0x42f/0x64f
> [ 105.585172] [<c134727f>] _cpu_down+0x106/0x2b4
I believe CPU hotplug is still an issue with -rt, and this is a known
problem.
-- Steve
> [ 105.585176] [<c102542c>] ? put_online_cpus+0x44/0x44
> [ 105.585180] [<c1347452>] cpu_down+0x25/0x34
> [ 105.585183] [<c1348a96>] store_online+0x29/0x70
> [ 105.585187] [<c1348a6d>] ? acpi_processor_start+0xf7/0xf7
> [ 105.585192] [<c127b0ef>] dev_attr_store+0x1b/0x23
> [ 105.585197] [<c10eb73e>] sysfs_write_file+0xae/0xe7
> [ 105.585201] [<c10ab9b6>] vfs_write+0x8c/0x122
> [ 105.585205] [<c10eb690>] ? sysfs_poll+0x77/0x77
> [ 105.585209] [<c10abc07>] sys_write+0x3b/0x60
> [ 105.585214] [<c1357963>] sysenter_do_call+0x12/0x2c
> [ 105.585242] BUG: scheduling while atomic: chcpu/2817/0x00000002
> [ 105.585244] Modules linked in: loop rfcomm bnep btusb hid_microsoft
> usbhid hid uhci_hcd ehci_hcd 3c59x usbcore e1000e mii usb_common sg
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Fwd: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-27 12:37 ` Steven Rostedt
@ 2012-06-27 13:32 ` Thomas Sattler
2012-06-27 14:01 ` Tim Sally
0 siblings, 1 reply; 5+ messages in thread
From: Thomas Sattler @ 2012-06-27 13:32 UTC (permalink / raw)
To: Steven Rostedt; +Cc: richard -rw- weinberger, Thomas Gleixner, rt-users
> I believe CPU hotplug is still an issue with -rt, and
> this is a known problem.
Is there an (un-)official list of known problems? I'd
like to help by reporting issues without repeating
already known issues over and over again. :-)
Thomas
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Fwd: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-27 13:32 ` Thomas Sattler
@ 2012-06-27 14:01 ` Tim Sally
2012-06-27 14:21 ` Steven Rostedt
0 siblings, 1 reply; 5+ messages in thread
From: Tim Sally @ 2012-06-27 14:01 UTC (permalink / raw)
To: Thomas Sattler
Cc: Steven Rostedt, richard -rw- weinberger, Thomas Gleixner,
rt-users
I'm interested in this as well. -Tim
On Wed, Jun 27, 2012 at 03:32:06PM +0200, Thomas Sattler wrote:
> > I believe CPU hotplug is still an issue with -rt, and
> > this is a known problem.
>
> Is there an (un-)official list of known problems? I'd
> like to help by reporting issues without repeating
> already known issues over and over again. :-)
>
> Thomas
> --
> To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Fwd: BUG: scheduling while atomic: chcpu/6197/0x00000002
2012-06-27 14:01 ` Tim Sally
@ 2012-06-27 14:21 ` Steven Rostedt
0 siblings, 0 replies; 5+ messages in thread
From: Steven Rostedt @ 2012-06-27 14:21 UTC (permalink / raw)
To: Tim Sally
Cc: Thomas Sattler, richard -rw- weinberger, Thomas Gleixner,
rt-users
On Wed, 2012-06-27 at 10:01 -0400, Tim Sally wrote:
> I'm interested in this as well. -Tim
>
> On Wed, Jun 27, 2012 at 03:32:06PM +0200, Thomas Sattler wrote:
> > > I believe CPU hotplug is still an issue with -rt, and
> > > this is a known problem.
> >
> > Is there an (un-)official list of known problems? I'd
> > like to help by reporting issues without repeating
> > already known issues over and over again. :-)
Unfortunately, I do not believe such a list exists. Perhaps one should
be created ;-)
-- Steve
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2012-06-27 14:21 UTC | newest]
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[not found] ` <4FEAF165.9090008@med.uni-frankfurt.de>
2012-06-27 12:26 ` Fwd: BUG: scheduling while atomic: chcpu/6197/0x00000002 richard -rw- weinberger
2012-06-27 12:37 ` Steven Rostedt
2012-06-27 13:32 ` Thomas Sattler
2012-06-27 14:01 ` Tim Sally
2012-06-27 14:21 ` Steven Rostedt
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