Messages in this thread | ![/](/images/icornerl.gif) | | Date | Thu, 20 Mar 2003 23:49:04 -0800 | From | "Martin J. Bligh" <> | Subject | [Bug 479] New: visor module oops |
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http://bugme.osdl.org/show_bug.cgi?id=479
Summary: visor module oops Kernel Version: 2.5.65 Status: NEW Severity: normal Owner: greg@kroah.com Submitter: fabrice@fma.homelinux.com
Distribution: Mandrake Cooker Hardware Environment: Hitachi laptop, Intel USB controller/PIIX4 chipset Software Environment: pilot-link/kpilot,nodevfs, nohotplug running Problem Description: oops when unloading visor module
Steps to reproduce: Plug in your palm (I use a clie T615C). Press the hotsync button. Then modprobe visor module. Press cancel on the palm. rmmod visor and it rmmod segfault. On the other hand, if I modprobe visor first, then press the button, then run kpilot, then it works perfectly.
dmesg gives: Unable to handle kernel NULL pointer dereference at virtual address 00000004 printing eip: c01f577b *pde = 00000000 Oops: 0002 CPU: 0 EIP: 0060:[<c01f577b>] Not tainted EFLAGS: 00010246 EIP is at devclass_remove_driver+0x4b/0x90 eax: d0915c04 ebx: c03605c4 ecx: 00000000 edx: 00000000 esi: c0360580 edi: d0915bbc ebp: c42d7f14 esp: c42d7f00 ds: 007b es: 007b ss: 0068 Process rmmod (pid: 20800, threadinfo=c42d6000 task=c74bd2e0) Stack: c030c1ff 00000042 d090fa80 d090fa40 d0915bbc c42d7f30 c01f4fbf d0915bbc 00000042 d0915bc8 d0915bbc d0915d60 c42d7f48 c01f53fa d0915bbc c0358ab8 c0358ab8 00000880 c42d7f54 d09137ce d0915bbc c42d7fbc c012df1e c030c008 Call Trace: [<d090fa80>] usb_serial_bus_type+0x40/0xe0 [usbserial] [<d090fa40>] usb_serial_bus_type+0x0/0xe0 [usbserial] [<d0915bbc>] handspring_device+0x1c/0xe0 [visor] [<c01f4fbf>] bus_remove_driver+0x5f/0xa0 [<d0915bbc>] handspring_device+0x1c/0xe0 [visor] [<d0915bc8>] handspring_device+0x28/0xe0 [visor] [<d0915bbc>] handspring_device+0x1c/0xe0 [visor] [<d0915d60>] +0x0/0x100 [visor] [<c01f53fa>] driver_unregister+0x1a/0x44 [<d0915bbc>] handspring_device+0x1c/0xe0 [visor] [<d09137ce>] +0x1e/0x30 [visor] [<d0915bbc>] handspring_device+0x1c/0xe0 [visor] [<c012df1e>] sys_delete_module+0x1de/0x240 [<c0142317>] sys_munmap+0x57/0x80 [<c010948b>] syscall_call+0x7/0xb Code: 89 4a 04 89 11 89 40 04 89 47 48 89 3c 24 e8 42 fe ff ff 89 I use a vanilla 2.5.65, modules-init-tools 0.9.9.
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