* Can't unload uhci_hcd module with 2.6.22 -- also oops
@ 2007-07-30 20:36 A. Kalten
2007-07-30 21:20 ` Gabriel C
0 siblings, 1 reply; 6+ messages in thread
From: A. Kalten @ 2007-07-30 20:36 UTC (permalink / raw)
To: linux-kernel
Hello,
To send a fax using an external usb modem, I do the following:
modprobe uhci-hcd
modprobe cdc-acm
mount -t usbfs none /proc/bus/usb
Then I send the fax.
However, when I attempt to unload the modules by reversing
the above steps, then uhci_hcd module will not unload:
[/]# rmmod uhci-hcd
ERROR: Removing 'uhci_hcd': Device or resource busy
Using lsof to list all open files gives the following:
ksuspend_ 766 root cwd DIR 8,1 456 2 /
ksuspend_ 766 root rtd DIR 8,1 456 2 /
ksuspend_ 766 root txt unknown /proc/766/exe
khubd 769 root cwd DIR 8,1 456 2 /
khubd 769 root rtd DIR 8,1 456 2 /
khubd 769 root txt unknown /proc/769/exe
I cannot terminate these processes.
Also, the kernel log shows an oops:
kernel: usbcore: deregistering interface driver cdc_acm
kernel: uhci_hcd 0000:00:1d.3: remove, state 1
kernel: usb usb4: USB disconnect, address 1
kernel: uhci_hcd 0000:00:1d.3: USB bus 4 deregistered
kernel: ACPI: PCI interrupt for device 0000:00:1d.3 disabled
kernel: uhci_hcd 0000:00:1d.2: remove, state 1
kernel: usb usb3: USB disconnect, address 1
kernel: uhci_hcd 0000:00:1d.2: USB bus 3 deregistered
kernel: ACPI: PCI interrupt for device 0000:00:1d.2 disabled
kernel: uhci_hcd 0000:00:1d.1: remove, state 1
kernel: usb usb2: USB disconnect, address 1
kernel: usb 2-2: USB disconnect, address 2
kernel: Unable to handle kernel paging request at ffffffff88040440 RIP:
kernel: [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
kernel: PGD 203067 PUD 205063 PMD 7a6b2067 PTE 0
kernel: Oops: 0000 [1] SMP
kernel: CPU 1
kernel: Modules linked in: uhci_hcd usbcore af_packet skge bitrev crc32
kernel: Pid: 1123, comm: rmmod Not tainted 2.6.22 #3
kernel: RIP: 0010:[sysfs_get_name+46/65] [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
kernel: RSP: 0018:ffff81006edd5ce0 EFLAGS: 00010246
kernel: RAX: ffffffff88040440 RBX: ffff81006fbb68e0 RCX: 0000000000000000
kernel: RDX: 0000000000000004 RSI: ffffffff80423b38 RDI: ffff81006fbb6b88
kernel: RBP: ffff81006fbb6b88 R08: 0000000000000000 R09: 8000000000000000
kernel: R10: 0000000000000080 R11: ffffffff80330606 R12: ffff81006fbb6b90
kernel: R13: ffff81006f414c78 R14: ffffffff80423b38 R15: ffffffff8803b940
kernel: FS: 00002b93765b76f0(0000) GS:ffff810002f4d140(0000) knlGS:0000000000000000
kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
kernel: CR2: ffffffff88040440 CR3: 000000006f5e5000 CR4: 00000000000006e0
kernel: Process rmmod (pid: 1123, threadinfo ffff81006edd4000, task ffff81006e48ae40)
kernel: Stack: ffffffff8029b6dd ffff81006fbb0420 ffff81006fbb05a0 ffff8100784a9800
kernel: ffff81006fbb0510 ffff8100784a9888 ffffffff80330986 ffff81006fbb0400
kernel: ffff81006fbb0400 ffff81006fbb0420 ffffffff80330b95 ffff81006fbb0400
kernel: Call Trace:
kernel: [sysfs_hash_and_remove+104/295] sysfs_hash_and_remove+0x68/0x127
kernel: [device_remove_file+37/58] device_remove_file+0x25/0x3a
kernel: [device_del+375/704] device_del+0x177/0x2c0
kernel: [_end+129064639/2131730856] :usbcore:usb_disable_device+0x8c/0x106
kernel: [_end+129049073/2131730856] :usbcore:usb_disconnect+0x98/0xee
kernel: [_end+129049053/2131730856] :usbcore:usb_disconnect+0x84/0xee
kernel: [_end+129057037/2131730856] :usbcore:usb_remove_hcd+0x85/0xe1
kernel: [_end+129097874/2131730856] :usbcore:usb_hcd_pci_remove+0x1d/0x89
kernel: [pci_device_remove+36/77] pci_device_remove+0x24/0x4d
kernel: [__device_release_driver+130/184] __device_release_driver+0x82/0xb8
kernel: [driver_detach+252/261] driver_detach+0xfc/0x105
kernel: [bus_remove_driver+122/157] bus_remove_driver+0x7a/0x9d
kernel: [pci_unregister_driver+16/129] pci_unregister_driver+0x10/0x81
kernel: [_end+129186684/2131730856] :uhci_hcd:uhci_hcd_cleanup+0x10/0x2c
kernel: [sys_delete_module+319/444] sys_delete_module+0x13f/0x1bc
kernel: [__up_write+29/318] __up_write+0x1d/0x13e
kernel: [system_call+126/131] system_call+0x7e/0x83
kernel:
kernel:
kernel: Code: 48 8b 00 c3 83 fa 20 74 f7 31 c0 0f 1f 00 c3 0f 0b eb fe 41
kernel: RIP [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
kernel: RSP <ffff81006edd5ce0>
kernel: CR2: ffffffff88040440
My system is Intel Pentium D dual core with Asus P5WD2 motherboard.
Please CC to my personal address as I am not subscribed to the list.
Andrew Kalten
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Can't unload uhci_hcd module with 2.6.22 -- also oops
2007-07-30 20:36 Can't unload uhci_hcd module with 2.6.22 -- also oops A. Kalten
@ 2007-07-30 21:20 ` Gabriel C
2007-07-30 22:09 ` Alan Stern
2007-07-31 15:42 ` Alan Stern
0 siblings, 2 replies; 6+ messages in thread
From: Gabriel C @ 2007-07-30 21:20 UTC (permalink / raw)
To: A. Kalten; +Cc: linux-kernel, Alan Stern, linux-usb-devel
A. Kalten wrote:
[ added usb peoples to CC ]
> Hello,
>
> To send a fax using an external usb modem, I do the following:
>
> modprobe uhci-hcd
> modprobe cdc-acm
> mount -t usbfs none /proc/bus/usb
>
> Then I send the fax.
>
> However, when I attempt to unload the modules by reversing
> the above steps, then uhci_hcd module will not unload:
>
> [/]# rmmod uhci-hcd
> ERROR: Removing 'uhci_hcd': Device or resource busy
>
> Using lsof to list all open files gives the following:
>
> ksuspend_ 766 root cwd DIR 8,1 456 2 /
> ksuspend_ 766 root rtd DIR 8,1 456 2 /
> ksuspend_ 766 root txt unknown /proc/766/exe
> khubd 769 root cwd DIR 8,1 456 2 /
> khubd 769 root rtd DIR 8,1 456 2 /
> khubd 769 root txt unknown /proc/769/exe
>
> I cannot terminate these processes.
>
> Also, the kernel log shows an oops:
>
> kernel: usbcore: deregistering interface driver cdc_acm
> kernel: uhci_hcd 0000:00:1d.3: remove, state 1
> kernel: usb usb4: USB disconnect, address 1
> kernel: uhci_hcd 0000:00:1d.3: USB bus 4 deregistered
> kernel: ACPI: PCI interrupt for device 0000:00:1d.3 disabled
> kernel: uhci_hcd 0000:00:1d.2: remove, state 1
> kernel: usb usb3: USB disconnect, address 1
> kernel: uhci_hcd 0000:00:1d.2: USB bus 3 deregistered
> kernel: ACPI: PCI interrupt for device 0000:00:1d.2 disabled
> kernel: uhci_hcd 0000:00:1d.1: remove, state 1
> kernel: usb usb2: USB disconnect, address 1
> kernel: usb 2-2: USB disconnect, address 2
> kernel: Unable to handle kernel paging request at ffffffff88040440 RIP:
> kernel: [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
> kernel: PGD 203067 PUD 205063 PMD 7a6b2067 PTE 0
> kernel: Oops: 0000 [1] SMP
> kernel: CPU 1
> kernel: Modules linked in: uhci_hcd usbcore af_packet skge bitrev crc32
> kernel: Pid: 1123, comm: rmmod Not tainted 2.6.22 #3
> kernel: RIP: 0010:[sysfs_get_name+46/65] [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
> kernel: RSP: 0018:ffff81006edd5ce0 EFLAGS: 00010246
> kernel: RAX: ffffffff88040440 RBX: ffff81006fbb68e0 RCX: 0000000000000000
> kernel: RDX: 0000000000000004 RSI: ffffffff80423b38 RDI: ffff81006fbb6b88
> kernel: RBP: ffff81006fbb6b88 R08: 0000000000000000 R09: 8000000000000000
> kernel: R10: 0000000000000080 R11: ffffffff80330606 R12: ffff81006fbb6b90
> kernel: R13: ffff81006f414c78 R14: ffffffff80423b38 R15: ffffffff8803b940
> kernel: FS: 00002b93765b76f0(0000) GS:ffff810002f4d140(0000) knlGS:0000000000000000
> kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> kernel: CR2: ffffffff88040440 CR3: 000000006f5e5000 CR4: 00000000000006e0
> kernel: Process rmmod (pid: 1123, threadinfo ffff81006edd4000, task ffff81006e48ae40)
> kernel: Stack: ffffffff8029b6dd ffff81006fbb0420 ffff81006fbb05a0 ffff8100784a9800
> kernel: ffff81006fbb0510 ffff8100784a9888 ffffffff80330986 ffff81006fbb0400
> kernel: ffff81006fbb0400 ffff81006fbb0420 ffffffff80330b95 ffff81006fbb0400
> kernel: Call Trace:
> kernel: [sysfs_hash_and_remove+104/295] sysfs_hash_and_remove+0x68/0x127
> kernel: [device_remove_file+37/58] device_remove_file+0x25/0x3a
> kernel: [device_del+375/704] device_del+0x177/0x2c0
> kernel: [_end+129064639/2131730856] :usbcore:usb_disable_device+0x8c/0x106
> kernel: [_end+129049073/2131730856] :usbcore:usb_disconnect+0x98/0xee
> kernel: [_end+129049053/2131730856] :usbcore:usb_disconnect+0x84/0xee
> kernel: [_end+129057037/2131730856] :usbcore:usb_remove_hcd+0x85/0xe1
> kernel: [_end+129097874/2131730856] :usbcore:usb_hcd_pci_remove+0x1d/0x89
> kernel: [pci_device_remove+36/77] pci_device_remove+0x24/0x4d
> kernel: [__device_release_driver+130/184] __device_release_driver+0x82/0xb8
> kernel: [driver_detach+252/261] driver_detach+0xfc/0x105
> kernel: [bus_remove_driver+122/157] bus_remove_driver+0x7a/0x9d
> kernel: [pci_unregister_driver+16/129] pci_unregister_driver+0x10/0x81
> kernel: [_end+129186684/2131730856] :uhci_hcd:uhci_hcd_cleanup+0x10/0x2c
> kernel: [sys_delete_module+319/444] sys_delete_module+0x13f/0x1bc
> kernel: [__up_write+29/318] __up_write+0x1d/0x13e
> kernel: [system_call+126/131] system_call+0x7e/0x83
> kernel:
> kernel:
> kernel: Code: 48 8b 00 c3 83 fa 20 74 f7 31 c0 0f 1f 00 c3 0f 0b eb fe 41
> kernel: RIP [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
> kernel: RSP <ffff81006edd5ce0>
> kernel: CR2: ffffffff88040440
>
> My system is Intel Pentium D dual core with Asus P5WD2 motherboard.
>
> Please CC to my personal address as I am not subscribed to the list.
>
> Andrew Kalten
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Can't unload uhci_hcd module with 2.6.22 -- also oops
2007-07-30 21:20 ` Gabriel C
@ 2007-07-30 22:09 ` Alan Stern
2007-07-30 23:21 ` A. Kalten
2007-07-31 15:42 ` Alan Stern
1 sibling, 1 reply; 6+ messages in thread
From: Alan Stern @ 2007-07-30 22:09 UTC (permalink / raw)
To: A. Kalten, Gabriel C; +Cc: Kernel development list, USB development list
On Mon, 30 Jul 2007, Gabriel C wrote:
> A. Kalten wrote:
> [ added usb peoples to CC ]
> > Hello,
> >
> > To send a fax using an external usb modem, I do the following:
> >
> > modprobe uhci-hcd
> > modprobe cdc-acm
> > mount -t usbfs none /proc/bus/usb
> >
> > Then I send the fax.
> >
> > However, when I attempt to unload the modules by reversing
> > the above steps, then uhci_hcd module will not unload:
> >
> > [/]# rmmod uhci-hcd
> > ERROR: Removing 'uhci_hcd': Device or resource busy
> >
> > Using lsof to list all open files gives the following:
> >
> > ksuspend_ 766 root cwd DIR 8,1 456 2 /
> > ksuspend_ 766 root rtd DIR 8,1 456 2 /
> > ksuspend_ 766 root txt unknown /proc/766/exe
> > khubd 769 root cwd DIR 8,1 456 2 /
> > khubd 769 root rtd DIR 8,1 456 2 /
> > khubd 769 root txt unknown /proc/769/exe
> >
> > I cannot terminate these processes.
You're not supposed to be able to terminate them.
> > Also, the kernel log shows an oops:
> >
> > kernel: usbcore: deregistering interface driver cdc_acm
> > kernel: uhci_hcd 0000:00:1d.3: remove, state 1
> > kernel: usb usb4: USB disconnect, address 1
> > kernel: uhci_hcd 0000:00:1d.3: USB bus 4 deregistered
> > kernel: ACPI: PCI interrupt for device 0000:00:1d.3 disabled
> > kernel: uhci_hcd 0000:00:1d.2: remove, state 1
> > kernel: usb usb3: USB disconnect, address 1
> > kernel: uhci_hcd 0000:00:1d.2: USB bus 3 deregistered
> > kernel: ACPI: PCI interrupt for device 0000:00:1d.2 disabled
> > kernel: uhci_hcd 0000:00:1d.1: remove, state 1
> > kernel: usb usb2: USB disconnect, address 1
> > kernel: usb 2-2: USB disconnect, address 2
> > kernel: Unable to handle kernel paging request at ffffffff88040440 RIP:
> > kernel: [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
> > kernel: PGD 203067 PUD 205063 PMD 7a6b2067 PTE 0
> > kernel: Oops: 0000 [1] SMP
> > kernel: CPU 1
> > kernel: Modules linked in: uhci_hcd usbcore af_packet skge bitrev crc32
> > kernel: Pid: 1123, comm: rmmod Not tainted 2.6.22 #3
> > kernel: RIP: 0010:[sysfs_get_name+46/65] [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
> > kernel: RSP: 0018:ffff81006edd5ce0 EFLAGS: 00010246
> > kernel: RAX: ffffffff88040440 RBX: ffff81006fbb68e0 RCX: 0000000000000000
> > kernel: RDX: 0000000000000004 RSI: ffffffff80423b38 RDI: ffff81006fbb6b88
> > kernel: RBP: ffff81006fbb6b88 R08: 0000000000000000 R09: 8000000000000000
> > kernel: R10: 0000000000000080 R11: ffffffff80330606 R12: ffff81006fbb6b90
> > kernel: R13: ffff81006f414c78 R14: ffffffff80423b38 R15: ffffffff8803b940
> > kernel: FS: 00002b93765b76f0(0000) GS:ffff810002f4d140(0000) knlGS:0000000000000000
> > kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> > kernel: CR2: ffffffff88040440 CR3: 000000006f5e5000 CR4: 00000000000006e0
> > kernel: Process rmmod (pid: 1123, threadinfo ffff81006edd4000, task ffff81006e48ae40)
> > kernel: Stack: ffffffff8029b6dd ffff81006fbb0420 ffff81006fbb05a0 ffff8100784a9800
> > kernel: ffff81006fbb0510 ffff8100784a9888 ffffffff80330986 ffff81006fbb0400
> > kernel: ffff81006fbb0400 ffff81006fbb0420 ffffffff80330b95 ffff81006fbb0400
> > kernel: Call Trace:
> > kernel: [sysfs_hash_and_remove+104/295] sysfs_hash_and_remove+0x68/0x127
> > kernel: [device_remove_file+37/58] device_remove_file+0x25/0x3a
> > kernel: [device_del+375/704] device_del+0x177/0x2c0
> > kernel: [_end+129064639/2131730856] :usbcore:usb_disable_device+0x8c/0x106
> > kernel: [_end+129049073/2131730856] :usbcore:usb_disconnect+0x98/0xee
> > kernel: [_end+129049053/2131730856] :usbcore:usb_disconnect+0x84/0xee
> > kernel: [_end+129057037/2131730856] :usbcore:usb_remove_hcd+0x85/0xe1
> > kernel: [_end+129097874/2131730856] :usbcore:usb_hcd_pci_remove+0x1d/0x89
> > kernel: [pci_device_remove+36/77] pci_device_remove+0x24/0x4d
> > kernel: [__device_release_driver+130/184] __device_release_driver+0x82/0xb8
> > kernel: [driver_detach+252/261] driver_detach+0xfc/0x105
> > kernel: [bus_remove_driver+122/157] bus_remove_driver+0x7a/0x9d
> > kernel: [pci_unregister_driver+16/129] pci_unregister_driver+0x10/0x81
> > kernel: [_end+129186684/2131730856] :uhci_hcd:uhci_hcd_cleanup+0x10/0x2c
> > kernel: [sys_delete_module+319/444] sys_delete_module+0x13f/0x1bc
> > kernel: [__up_write+29/318] __up_write+0x1d/0x13e
> > kernel: [system_call+126/131] system_call+0x7e/0x83
> > kernel:
> > kernel:
> > kernel: Code: 48 8b 00 c3 83 fa 20 74 f7 31 c0 0f 1f 00 c3 0f 0b eb fe 41
> > kernel: RIP [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
> > kernel: RSP <ffff81006edd5ce0>
> > kernel: CR2: ffffffff88040440
> >
> > My system is Intel Pentium D dual core with Asus P5WD2 motherboard.
Does this patch help?
http://article.gmane.org/gmane.linux.kernel/556682/raw
Alan Stern
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Can't unload uhci_hcd module with 2.6.22 -- also oops
2007-07-30 22:09 ` Alan Stern
@ 2007-07-30 23:21 ` A. Kalten
0 siblings, 0 replies; 6+ messages in thread
From: A. Kalten @ 2007-07-30 23:21 UTC (permalink / raw)
To: Gabriel C; +Cc: Kernel development list, USB development list
On Mon, 30 Jul 2007 18:09:23 -0400 (EDT)
Alan Stern <stern@rowland.harvard.edu> wrote:
> On Mon, 30 Jul 2007, Gabriel C wrote:
>
> > A. Kalten wrote:
> > [ added usb peoples to CC ]
> > > Hello,
> > >
> > > To send a fax using an external usb modem, I do the following:
> > >
> > > modprobe uhci-hcd
> > > modprobe cdc-acm
> > > mount -t usbfs none /proc/bus/usb
> > >
> > > Then I send the fax.
> > >
> > > However, when I attempt to unload the modules by reversing
> > > the above steps, then uhci_hcd module will not unload:
> > >
> > > [/]# rmmod uhci-hcd
> > > ERROR: Removing 'uhci_hcd': Device or resource busy
> > >
> > > Using lsof to list all open files gives the following:
> > >
> > > ksuspend_ 766 root cwd DIR 8,1 456 2 /
> > > ksuspend_ 766 root rtd DIR 8,1 456 2 /
> > > ksuspend_ 766 root txt unknown /proc/766/exe
> > > khubd 769 root cwd DIR 8,1 456 2 /
> > > khubd 769 root rtd DIR 8,1 456 2 /
> > > khubd 769 root txt unknown /proc/769/exe
> > >
> > > I cannot terminate these processes.
>
> You're not supposed to be able to terminate them.
>
> > > Also, the kernel log shows an oops:
> > >
> > > kernel: usbcore: deregistering interface driver cdc_acm
> > > kernel: uhci_hcd 0000:00:1d.3: remove, state 1
> > > kernel: usb usb4: USB disconnect, address 1
> > > kernel: uhci_hcd 0000:00:1d.3: USB bus 4 deregistered
> > > kernel: ACPI: PCI interrupt for device 0000:00:1d.3 disabled
> > > kernel: uhci_hcd 0000:00:1d.2: remove, state 1
> > > kernel: usb usb3: USB disconnect, address 1
> > > kernel: uhci_hcd 0000:00:1d.2: USB bus 3 deregistered
> > > kernel: ACPI: PCI interrupt for device 0000:00:1d.2 disabled
> > > kernel: uhci_hcd 0000:00:1d.1: remove, state 1
> > > kernel: usb usb2: USB disconnect, address 1
> > > kernel: usb 2-2: USB disconnect, address 2
> > > kernel: Unable to handle kernel paging request at ffffffff88040440 RIP:
> > > kernel: [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
> > > kernel: PGD 203067 PUD 205063 PMD 7a6b2067 PTE 0
> > > kernel: Oops: 0000 [1] SMP
> > > kernel: CPU 1
> > > kernel: Modules linked in: uhci_hcd usbcore af_packet skge bitrev crc32
> > > kernel: Pid: 1123, comm: rmmod Not tainted 2.6.22 #3
> > > kernel: RIP: 0010:[sysfs_get_name+46/65] [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
> > > kernel: RSP: 0018:ffff81006edd5ce0 EFLAGS: 00010246
> > > kernel: RAX: ffffffff88040440 RBX: ffff81006fbb68e0 RCX: 0000000000000000
> > > kernel: RDX: 0000000000000004 RSI: ffffffff80423b38 RDI: ffff81006fbb6b88
> > > kernel: RBP: ffff81006fbb6b88 R08: 0000000000000000 R09: 8000000000000000
> > > kernel: R10: 0000000000000080 R11: ffffffff80330606 R12: ffff81006fbb6b90
> > > kernel: R13: ffff81006f414c78 R14: ffffffff80423b38 R15: ffffffff8803b940
> > > kernel: FS: 00002b93765b76f0(0000) GS:ffff810002f4d140(0000) knlGS:0000000000000000
> > > kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> > > kernel: CR2: ffffffff88040440 CR3: 000000006f5e5000 CR4: 00000000000006e0
> > > kernel: Process rmmod (pid: 1123, threadinfo ffff81006edd4000, task ffff81006e48ae40)
> > > kernel: Stack: ffffffff8029b6dd ffff81006fbb0420 ffff81006fbb05a0 ffff8100784a9800
> > > kernel: ffff81006fbb0510 ffff8100784a9888 ffffffff80330986 ffff81006fbb0400
> > > kernel: ffff81006fbb0400 ffff81006fbb0420 ffffffff80330b95 ffff81006fbb0400
> > > kernel: Call Trace:
> > > kernel: [sysfs_hash_and_remove+104/295] sysfs_hash_and_remove+0x68/0x127
> > > kernel: [device_remove_file+37/58] device_remove_file+0x25/0x3a
> > > kernel: [device_del+375/704] device_del+0x177/0x2c0
> > > kernel: [_end+129064639/2131730856] :usbcore:usb_disable_device+0x8c/0x106
> > > kernel: [_end+129049073/2131730856] :usbcore:usb_disconnect+0x98/0xee
> > > kernel: [_end+129049053/2131730856] :usbcore:usb_disconnect+0x84/0xee
> > > kernel: [_end+129057037/2131730856] :usbcore:usb_remove_hcd+0x85/0xe1
> > > kernel: [_end+129097874/2131730856] :usbcore:usb_hcd_pci_remove+0x1d/0x89
> > > kernel: [pci_device_remove+36/77] pci_device_remove+0x24/0x4d
> > > kernel: [__device_release_driver+130/184] __device_release_driver+0x82/0xb8
> > > kernel: [driver_detach+252/261] driver_detach+0xfc/0x105
> > > kernel: [bus_remove_driver+122/157] bus_remove_driver+0x7a/0x9d
> > > kernel: [pci_unregister_driver+16/129] pci_unregister_driver+0x10/0x81
> > > kernel: [_end+129186684/2131730856] :uhci_hcd:uhci_hcd_cleanup+0x10/0x2c
> > > kernel: [sys_delete_module+319/444] sys_delete_module+0x13f/0x1bc
> > > kernel: [__up_write+29/318] __up_write+0x1d/0x13e
> > > kernel: [system_call+126/131] system_call+0x7e/0x83
> > > kernel:
> > > kernel:
> > > kernel: Code: 48 8b 00 c3 83 fa 20 74 f7 31 c0 0f 1f 00 c3 0f 0b eb fe 41
> > > kernel: RIP [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
> > > kernel: RSP <ffff81006edd5ce0>
> > > kernel: CR2: ffffffff88040440
> > >
> > > My system is Intel Pentium D dual core with Asus P5WD2 motherboard.
>
> Does this patch help?
>
> http://article.gmane.org/gmane.linux.kernel/556682/raw
>
> Alan Stern
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Can't unload uhci_hcd module with 2.6.22 -- also oops
2007-07-30 21:20 ` Gabriel C
2007-07-30 22:09 ` Alan Stern
@ 2007-07-31 15:42 ` Alan Stern
2007-08-01 10:30 ` Tejun Heo
1 sibling, 1 reply; 6+ messages in thread
From: Alan Stern @ 2007-07-31 15:42 UTC (permalink / raw)
To: Tejun Heo; +Cc: Gabriel C, A. Kalten, Kernel development list
Tejun:
Can you look at this oops message please? It appears similar to the
sysfs bug in 2.6.23-rc1, but it occurred under 2.6.22. Is a similar
fix needed for the 2.6.22-stable series?
Thanks,
Alan Stern
On Mon, 30 Jul 2007, Gabriel C wrote:
> A. Kalten wrote:
> [ added usb peoples to CC ]
> > Hello,
> >
> > To send a fax using an external usb modem, I do the following:
> >
> > modprobe uhci-hcd
> > modprobe cdc-acm
> > mount -t usbfs none /proc/bus/usb
> >
> > Then I send the fax.
> >
> > However, when I attempt to unload the modules by reversing
> > the above steps, then uhci_hcd module will not unload:
> >
> > [/]# rmmod uhci-hcd
> > ERROR: Removing 'uhci_hcd': Device or resource busy
> >
> > Using lsof to list all open files gives the following:
> >
> > ksuspend_ 766 root cwd DIR 8,1 456 2 /
> > ksuspend_ 766 root rtd DIR 8,1 456 2 /
> > ksuspend_ 766 root txt unknown /proc/766/exe
> > khubd 769 root cwd DIR 8,1 456 2 /
> > khubd 769 root rtd DIR 8,1 456 2 /
> > khubd 769 root txt unknown /proc/769/exe
> >
> > I cannot terminate these processes.
> >
> > Also, the kernel log shows an oops:
> >
> > kernel: usbcore: deregistering interface driver cdc_acm
> > kernel: uhci_hcd 0000:00:1d.3: remove, state 1
> > kernel: usb usb4: USB disconnect, address 1
> > kernel: uhci_hcd 0000:00:1d.3: USB bus 4 deregistered
> > kernel: ACPI: PCI interrupt for device 0000:00:1d.3 disabled
> > kernel: uhci_hcd 0000:00:1d.2: remove, state 1
> > kernel: usb usb3: USB disconnect, address 1
> > kernel: uhci_hcd 0000:00:1d.2: USB bus 3 deregistered
> > kernel: ACPI: PCI interrupt for device 0000:00:1d.2 disabled
> > kernel: uhci_hcd 0000:00:1d.1: remove, state 1
> > kernel: usb usb2: USB disconnect, address 1
> > kernel: usb 2-2: USB disconnect, address 2
> > kernel: Unable to handle kernel paging request at ffffffff88040440 RIP:
> > kernel: [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
> > kernel: PGD 203067 PUD 205063 PMD 7a6b2067 PTE 0
> > kernel: Oops: 0000 [1] SMP
> > kernel: CPU 1
> > kernel: Modules linked in: uhci_hcd usbcore af_packet skge bitrev crc32
> > kernel: Pid: 1123, comm: rmmod Not tainted 2.6.22 #3
> > kernel: RIP: 0010:[sysfs_get_name+46/65] [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
> > kernel: RSP: 0018:ffff81006edd5ce0 EFLAGS: 00010246
> > kernel: RAX: ffffffff88040440 RBX: ffff81006fbb68e0 RCX: 0000000000000000
> > kernel: RDX: 0000000000000004 RSI: ffffffff80423b38 RDI: ffff81006fbb6b88
> > kernel: RBP: ffff81006fbb6b88 R08: 0000000000000000 R09: 8000000000000000
> > kernel: R10: 0000000000000080 R11: ffffffff80330606 R12: ffff81006fbb6b90
> > kernel: R13: ffff81006f414c78 R14: ffffffff80423b38 R15: ffffffff8803b940
> > kernel: FS: 00002b93765b76f0(0000) GS:ffff810002f4d140(0000) knlGS:0000000000000000
> > kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> > kernel: CR2: ffffffff88040440 CR3: 000000006f5e5000 CR4: 00000000000006e0
> > kernel: Process rmmod (pid: 1123, threadinfo ffff81006edd4000, task ffff81006e48ae40)
> > kernel: Stack: ffffffff8029b6dd ffff81006fbb0420 ffff81006fbb05a0 ffff8100784a9800
> > kernel: ffff81006fbb0510 ffff8100784a9888 ffffffff80330986 ffff81006fbb0400
> > kernel: ffff81006fbb0400 ffff81006fbb0420 ffffffff80330b95 ffff81006fbb0400
> > kernel: Call Trace:
> > kernel: [sysfs_hash_and_remove+104/295] sysfs_hash_and_remove+0x68/0x127
> > kernel: [device_remove_file+37/58] device_remove_file+0x25/0x3a
> > kernel: [device_del+375/704] device_del+0x177/0x2c0
> > kernel: [_end+129064639/2131730856] :usbcore:usb_disable_device+0x8c/0x106
> > kernel: [_end+129049073/2131730856] :usbcore:usb_disconnect+0x98/0xee
> > kernel: [_end+129049053/2131730856] :usbcore:usb_disconnect+0x84/0xee
> > kernel: [_end+129057037/2131730856] :usbcore:usb_remove_hcd+0x85/0xe1
> > kernel: [_end+129097874/2131730856] :usbcore:usb_hcd_pci_remove+0x1d/0x89
> > kernel: [pci_device_remove+36/77] pci_device_remove+0x24/0x4d
> > kernel: [__device_release_driver+130/184] __device_release_driver+0x82/0xb8
> > kernel: [driver_detach+252/261] driver_detach+0xfc/0x105
> > kernel: [bus_remove_driver+122/157] bus_remove_driver+0x7a/0x9d
> > kernel: [pci_unregister_driver+16/129] pci_unregister_driver+0x10/0x81
> > kernel: [_end+129186684/2131730856] :uhci_hcd:uhci_hcd_cleanup+0x10/0x2c
> > kernel: [sys_delete_module+319/444] sys_delete_module+0x13f/0x1bc
> > kernel: [__up_write+29/318] __up_write+0x1d/0x13e
> > kernel: [system_call+126/131] system_call+0x7e/0x83
> > kernel:
> > kernel:
> > kernel: Code: 48 8b 00 c3 83 fa 20 74 f7 31 c0 0f 1f 00 c3 0f 0b eb fe 41
> > kernel: RIP [sysfs_get_name+46/65] sysfs_get_name+0x2e/0x41
> > kernel: RSP <ffff81006edd5ce0>
> > kernel: CR2: ffffffff88040440
> >
> > My system is Intel Pentium D dual core with Asus P5WD2 motherboard.
> >
> > Please CC to my personal address as I am not subscribed to the list.
> >
> > Andrew Kalten
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Can't unload uhci_hcd module with 2.6.22 -- also oops
2007-07-31 15:42 ` Alan Stern
@ 2007-08-01 10:30 ` Tejun Heo
0 siblings, 0 replies; 6+ messages in thread
From: Tejun Heo @ 2007-08-01 10:30 UTC (permalink / raw)
To: Alan Stern; +Cc: Gabriel C, A. Kalten, Kernel development list
Hello, Alan.
Alan Stern wrote:
> Tejun:
>
> Can you look at this oops message please? It appears similar to the
> sysfs bug in 2.6.23-rc1, but it occurred under 2.6.22. Is a similar
> fix needed for the 2.6.22-stable series?
2.6.23-rc1 bug was one too many put during symlink creation failure path
leading to premature release of parent kobject on removal. The posted
log looks more like premature module unload.
For example, something like...
1. module b uses services of module a
2. module b creates some attributes with struct attribute in the module
3. module b unloads but attr created in #2 is not removed
4. module a tries to unload and tries to remove attr from #2 and oops
because struct attribute referenced by the attr is already gone.
Thanks.
--
tejun
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2007-08-01 10:30 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2007-07-30 20:36 Can't unload uhci_hcd module with 2.6.22 -- also oops A. Kalten
2007-07-30 21:20 ` Gabriel C
2007-07-30 22:09 ` Alan Stern
2007-07-30 23:21 ` A. Kalten
2007-07-31 15:42 ` Alan Stern
2007-08-01 10:30 ` Tejun Heo
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