[2.6.6] [usb] bad: scheduling while atomic!

[2.6.6] [usb] bad: scheduling while atomic!

[Pawel Dziekonski]

Hi,

vanilla 2.6.6, i'm trying to rmmod my adsl usb modem module.
rmmod hangs. I can Control-C it, but is does not end - it takes 
100% of cpu.

logs:

kernel: usbcore: deregistering driver eagle-usb
kernel: bad: scheduling while atomic!
kernel: Call Trace:
kernel:  [schedule+1423/1440] <6>[eagle-usb] eu_irq : URB canceled by user.
kernel: schedule+0x58f/0x5a0
kernel:  [__pagevec_free+28/48] __pagevec_free+0x1c/0x30
kernel:  [release_pages+119/368] release_pages+0x77/0x170
kernel:  [wait_for_completion+120/208] wait_for_completion+0x78/0xd0
kernel:  [default_wake_function+0/32] default_wake_function+0x0/0x20
kernel:  [pg0+541813763/1070043136] ed_deschedule+0x33/0xf0 [ohci_hcd]
kernel:  [default_wake_function+0/32] default_wake_function+0x0/0x20
kernel:  [pg0+541943833/1070043136] hcd_unlink_urb+0x199/0x280 [usbcore]
kernel:  [pg0+541812484/1070043136] ed_free+0x24/0x30 [ohci_hcd]
kernel:  [pg0+542588608/1070043136] eu_irq+0x0/0x200 [eagle_usb]
kernel:  [pg0+541945986/1070043136] usb_unlink_urb+0x32/0x70 [usbcore]
kernel:  [pg0+542588542/1070043136] eu_disconnect_postfirm+0x29e/0x2e0 [eagle_usb]
kernel:  [pg0+541949572/1070043136] usb_disable_endpoint+0x74/0x80 [usbcore]
kernel:  [pg0+542587707/1070043136] eu_disconnect+0x10b/0x1b0 [eagle_usb]
kernel:  [pg0+541925626/1070043136] usb_unbind_interface+0x7a/0x80 [usbcore]
kernel:  [device_release_driver+100/112] device_release_driver+0x64/0x70
kernel:  [driver_detach+32/48] driver_detach+0x20/0x30
kernel:  [bus_remove_driver+61/128] bus_remove_driver+0x3d/0x80
kernel:  [driver_unregister+19/40] driver_unregister+0x13/0x28
kernel:  [pg0+541925842/1070043136] usb_deregister+0x32/0x40 [usbcore]
kernel:  [pg0+542624920/1070043136] eu_exit+0x18/0x71 [eagle_usb]
kernel:  [sys_delete_module+321/384] sys_delete_module+0x141/0x180
kernel:  [generic_file_direct_IO+18/160] generic_file_direct_IO+0x12/0xa0
kernel:  [syscall_call+7/11] syscall_call+0x7/0xb
kernel: 
kernel: [eagle-usb] ADSL device remove

any idea?

thanks in advance, Pawel
-- 
Pawel Dziekonski <pawel.dziekonski|@|pwr.wroc.pl>, KDM WCSS avatar:0:0:
Wroclaw Networking & Supercomputing Center, HPC Department
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Re: [2.6.6] [usb] bad: scheduling while atomic!

[Greg KH]

On Sat, May 22, 2004 at 12:45:31AM +0200, Pawel Dziekonski wrote:
> Hi,
> 
> vanilla 2.6.6, i'm trying to rmmod my adsl usb modem module.
> rmmod hangs. I can Control-C it, but is does not end - it takes 
> 100% of cpu.

That's not "vanilla" as that kernel does not have a eagle-usb driver in
it, right?  Try talking with the authors of that driver please about
fixing this problem.

thanks,

greg k-h

Re: [2.6.6] [usb] bad: scheduling while atomic!

[Pawel Dziekonski]

On pią, 21 maj 2004 at 04:52:29  -0700, Greg KH wrote:
> On Sat, May 22, 2004 at 12:45:31AM +0200, Pawel Dziekonski wrote:
> > Hi,
> > 
> > vanilla 2.6.6, I'm trying to rmmod my adsl usb modem module.
> > rmmod hangs. I can Control-C it, but is does not end - it takes 
> > 100% of cpu.
> 
> That's not "vanilla" as that kernel does not have a eagle-usb driver in
> it, right?  Try talking with the authors of that driver please about
> fixing this problem.

yes, you are right, this is an external driver.
I have written to linux kernel, because I had massive problems with this
modem with many kernel versions, including 2.4. for example, load of
sound modules was  freezing network connection. 2.6.6 changed this to
more stable situation and now the only problem is what I have described.
that's why I think it's rather kernel problem.
this is nforce2 based system.

regards, Pawel

-- 
Pawel Dziekonski <pawel.dziekonski|@|pwr.wroc.pl>, KDM WCSS avatar:0:0:
Wroclaw Networking & Supercomputing Center, HPC Department
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[solved] Re: [2.6.6] [usb] bad: scheduling while atomic!

[Pawel Dziekonski]

ok, driver bug, solved by its devel team.
thanks greg!
-- 
Pawel Dziekonski <pawel.dziekonski|@|pwr.wroc.pl>, KDM WCSS avatar:0:0:
Wroclaw Networking & Supercomputing Center, HPC Department
-> See message headers for privacy policy and S/MIME info.