BUG? g_printer oops on module onload

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Hello, 

g_printer module seems to have a problem when unloaded. 
i can reproduce this with 2.6.37-rc7

i think this is not expected behaviour !?

regards
roland

modprobe g_printer
modprobe -r g_printerKilled   
Dec 29 21:29:12 ubuntu kernel: [ 160.714195] dummy_hcd dummy_hcd: USB Host+Gadget Emulator, driver 02 May 2005Dec 29 21:29:12 ubuntu kernel: [ 160.714418] dummy_hcd dummy_hcd: Dummy host controllerDec 29 21:29:12 ubuntu kernel: [ 160.715347] dummy_hcd dummy_hcd: new USB bus registered, assigned bus number 3Dec 29 21:29:12 ubuntu kernel: [ 160.733118] hub 3-0:1.0: USB hub foundDec 29 21:29:12 ubuntu kernel: [ 160.733702] hub 3-0:1.0: 1 port detectedDec 29 21:29:12 ubuntu kernel: [ 160.790890] Printer Gadget: Printer Gadget, version: 2007 OCT 06Dec 29 21:29:12 ubuntu kernel: [ 160.790918] Printer Gadget: using dummy_udc, OUT ep-b IN ep-aDec 29 21:29:12 ubuntu kernel: [ 161.045647] usb 3-1: new high speed USB device using dummy_hcd and address 2Dec 29 21:29:12 ubuntu kernel: [ 161.217955] Printer Gadget: high speed config #1: 2 mA, Printer GadgetDec 29 21:29:12 ubuntu kernel: [ 161.276752] Printer Gadget: Using interface 0Dec 29 21:29:12 ubuntu kernel: [ 161.283080] usblp0: USB Bidirectional printer dev 2 if 0 alt 0 proto 2 vid 0x0525 pid 0xA4A8Dec 29 21:29:12 ubuntu kernel: [ 161.288866] usbcore: registered new interface driver usblpDec 29 21:29:22 ubuntu kernel: [ 170.997443] *pde = 00000000Dec 29 21:29:22 ubuntu kernel: [ 170.998225] Modules linked in: usblp g_printer(-) dummy_hcd snd_ens1371 gameport snd_rawmidi snd_seq_device snd_ac97_codec ac97_bus snd_pcm snd_timer psmouse snd ppdev intel_agp vmw_balloon intel_gtt soundcore lp serio_raw parport_pc snd_page_alloc shpchp agpgart parport i2c_piix4 mptspi mptscsih mptbase pcnet32 scsi_transport_spi floppy miiDec 29 21:29:22 ubuntu kernel: [ 170.999574]Dec 29 21:29:22 ubuntu kernel: [ 170.999783] Pid: 934, comm: modprobe Not tainted 2.6.37-rc7 #3 440BX Desktop Reference Platform/VMware Virtual PlatformDec 29 21:29:22 ubuntu kernel: [ 171.000049] EIP: 0060:[ ] EFLAGS: 00010286 CPU: 0Dec 29 21:29:22 ubuntu kernel: [ 171.000049] EIP is at sysfs_delete_link+0x30/0x70Dec 29 21:29:22 ubuntu kernel: [ 171.000049] EAX: d97d86c0 EBX: de69848c ECX: d97d3240 EDX: 00000000De
c 29 21:29:22 ubuntu kernel: [ 171.000049] ESI: de686808 EDI: d97d3240 EBP: d9009ec0 ESP: d9009eb4Dec 29 21:29:22 ubuntu kernel: [ 171.000049] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068Dec 29 21:29:22 ubuntu kernel: [ 171.000049] de686808 de686800 00000000 d9009ed0 c0406d6a de686800 de7a3b40 d9009ee4Dec 29 21:29:22 ubuntu kernel: [ 171.000049] c0407027 de686800 e0a4ce80 d977958c d9009ef0 c0407150 de686800 d9009f04Dec 29 21:29:22 ubuntu kernel: [ 171.000049] c0407192 c04062e0 0fb00000 e0a4d620 d9009f1c e0a4b5ad d97795a8 d9779104Dec 29 21:29:22 ubuntu kernel: [ 171.000049] [ ] ? device_remove_class_symlinks+0x5a/0x70Dec 29 21:29:22 ubuntu kernel: [ 171.000049] [ ] ? device_del+0x67/0x180Dec 29 21:29:22 ubuntu kernel: [ 171.000049] [ ] ? device_unregister+0x10/0x20Dec 29 21:29:22 ubuntu kernel: [ 171.000049] [ ] ? device_destroy+0x32/0x40Dec 29 21:29:22 ubuntu kernel: [ 171.000049] [ ] ? __match_devt+0x0/0x20Dec 29 21:29:22 ubuntu kernel: [ 171.000049] [ ] ? printer_unbind+0x2d/0x160 [g_printer]Dec 29 21:29:22 ubuntu kernel: [ 171.000049] [ ] ? usb_gadget_unregister_driver+0x85/0xd0 [dummy_hcd]Dec 29 21:29:22 ubuntu kernel: [ 171.000049] [ ] ? cleanup+0x38/0x60 [g_printer]Dec 29 21:29:22 ubuntu kernel: [ 171.000049] [ ] ? sys_delete_module+0x13d/0x200Dec 29 21:29:22 ubuntu kernel: [ 171.000049] [ ] ? do_munmap+0x212/0x300Dec 29 21:29:22 ubuntu kernel: [ 171.000049] [ ] ? sysenter_do_call+0x12/0x28Dec 29 21:29:22 ubuntu kernel: [ 171.023458] ---[ end trace 89b9a43c50cc3200 ]---
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