[Trac #992] kernel oops during rmmod usb8xxx in kernel-2.6.21-20070305.1

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#992: kernel oops during rmmod usb8xxx in kernel-2.6.21-20070305.1
--------------------+-------------------------------------------------------
 Reporter:  andrey  |       Owner:  blizzard 
     Type:  defect  |      Status:  new      
 Priority:  normal  |   Milestone:  Untriaged
Component:  distro  |    Keywords:           
--------------------+-------------------------------------------------------
 Hi.  There is a kernel oops when trying to reload the usb8xxx module.  To
 reproduce, just:

 {{{
 rmmod usb8xxx
 }}}

 and then the following kernel oops happens:

 {{{
 Message from syslogd at localhost at Tue Mar  6 01:35:50 2007 ...
 localhost kernel: [ 4705.214886] Oops: 0000 [#1]

 Message from syslogd at localhost at Tue Mar  6 01:35:50 2007 ...
 localhost kernel: [ 4705.217959] PREEMPT

 Message from syslogd at localhost at Tue Mar  6 01:35:50 2007 ...
 localhost kernel: [ 4705.256754] CPU:    0

 Message from syslogd at localhost at Tue Mar  6 01:35:50 2007 ...
 localhost kernel: [ 4705.256768] EIP:    0060:[<c890cf69>]    Not tainted
 VLI

 Message from syslogd at localhost at Tue Mar  6 01:35:50 2007 ...
 localhost kernel: [ 4705.256792] EFLAGS: 00010296
 (2.6.21-20070305.2.olpc.fb4edc7fa9b1ce8 #1)
 /
 Message from syslogd at localhost at Tue Mar  6 01:35:51 2007 ...
 localhost kernel: [ 4705.272646] EIP is at 0xc890cf69

 Message from syslogd at localhost at Tue Mar  6 01:35:51 2007 ...
 localhost kernel: [ 4705.276220] eax: 00000000   ebx: c740b3e0   ecx:
 c114c000   edx: 00000000

 Message from syslogd at localhost at Tue Mar  6 01:35:51 2007 ...
 localhost kernel: [ 4705.283682] esi: c6804000   edi: c6804944   ebp:
 c742e000   esp: c114ce84

 Message from syslogd at localhost at Tue Mar  6 01:35:51 2007 ...
 localhost kernel: [ 4705.305350] Stack: c114cea0 c040b587 00000000
 c740b000 00000282 c11bb2f0 c05b8679 00000246

 Message from syslogd at localhost at Tue Mar  6 01:35:51 2007 ...
 localhost kernel: [ 4705.314864]        c05b6891 c11e1e74 c70bb540
 c11e1e00 c8935300 c11bb2f0 c89241d0 c11e1e00

 Message from syslogd at localhost at Tue Mar  6 01:35:51 2007 ...
 localhost kernel: [ 4705.297534] Process khubd (pid: 36, ti=c114c000
 task=c114a050 task.ti=c114c000)

 Message from syslogd at localhost at Tue Mar  6 01:35:51 2007 ...
 localhost kernel: [ 4705.291109] ds: 007b   es: 007b   fs: 00d8  gs: 0000
 ss: 0068

 Message from syslogd at localhost at Tue Mar  6 01:35:51 2007 ...
 localhost kernel: [ 4705.324306]        c11e1e18 c11e1e00 c11e1e18
 c05300fe c11e1e18 c893533c c11d2058 c051001c

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.333809] Call Trace:

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.336760]  [<c040b587>] complete+0x39/0x48

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.341553]  [<c05b8679>]
 _spin_unlock_irqrestore+0x14/0x2a

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.347794]  [<c05b6891>] klist_release+0x13/0x1c

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.353070]  [<c05300fe>]
 usb_unbind_interface+0x2d/0x5f

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.358972]  [<c051001c>]
 __device_release_driver+0x71/0x8e

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.365143]  [<c051045a>]
 device_release_driver+0x2c/0x41

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.371161]  [<c050fa56>] bus_remove_device+0x5e/0x6c

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.376781]  [<c050e477>] device_del+0x11c/0x177

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.387710]  [<c052ae9b>] usb_disconnect+0x91/0x10c

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.393172]  [<c052bb43>] hub_thread+0x311/0x9db

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.398300]  [<c040ba56>] __activate_task+0x1c/0x29

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.403707]  [<c05b8679>]
 _spin_unlock_irqrestore+0x14/0x2a

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.409929]  [<c040b183>] __wake_up_common+0x32/0x55

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.415465]  [<c041e729>]
 autoremove_wake_function+0x0/0x35

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.421686]  [<c052b832>] hub_thread+0x0/0x9db

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.381934]  [<c052df94>]
 usb_disable_device+0x5c/0xbb

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.426629]  [<c041e670>] kthread+0xa0/0xc8

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.431290]  [<c041e5d0>] kthread+0x0/0xc8

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.435860]  [<c040404b>]
 kernel_thread_helper+0x7/0x10

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.441674]  =======================

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.445628] Code:  Bad EIP value.

 Message from syslogd at localhost at Tue Mar  6 01:35:52 2007 ...
 localhost kernel: [ 4705.449376] EIP: [<c890cf69>] 0xc890cf69 SS:ESP
 0068:c114ce84

 }}}

-- 
Ticket URL: <http://dev.laptop.org/ticket/992>
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