when boot Linux 2.2.19 with a Digianswer Bluetooth Sniffer plugged into the USB I get the following oops ... I know the device isn't supported but I'd like to be able to leave it plugged in without oopsen between Linux/Windows.. Regards, Dave. ksymoops 0.7c on i686 2.2.19. Options used -V (default) -k /proc/ksyms (default) -l /proc/modules (default) -o /lib/modules/2.2.19/ (default) -m /usr/src/linux/System.map (default) Warning: You did not tell me where to find symbol information. I will assume that the log matches the kernel and modules that are running right now and I'll use the default options above for symbol resolution. If the current kernel and/or modules do not match the log, you can get more accurate output by telling me the kernel version and where to find map, modules, ksyms etc. ksymoops -h explains the options. Unable to handle kernel NULL pointer dereference at virtual address 00000000 current->tss.cr3 = 00101000, %cr3 = 00101000 *pde = 00000000 Oops: 0002 CPU: 0 EIP: 0010:[<c0120825>] Using defaults from ksymoops -t elf32-i386 -a i386 EFLAGS: 00010202 eax: 00000039 ebx: c40fc080 ecx: c01a2c68 edx: cf422000 esi: c1f69120 edi: 00000202 ebp: 00000000 esp: c6f95f1c ds: 0018 es: 0018 ss: 0018 Process khubd (pid: 1646, process nr: 100, stackpage=c6f95000) Stack: 00000000 00000000 c1f6915c c01bed26 d09695ea c1f69120 ce79c600 00000010 00000000 00000000 cf73d25c d0976b8d 00000000 ce79c600 d0968ad0 ce79c600 ce79c600 00000000 d096993e ce79c600 ce79c600 00000000 00000000 00000001 Call Trace: [<d09695ea>] [<d0976b8d>] [<d0968ad0>] [<d096993e>] [<d096b659>] [<d096b719>] [<d09710e7>] [<d0970001>] [<d097253c>] [<d096b8bd>] [<d0968050>] [<c0107b8b>] [<d0968000>] Code: c7 05 00 00 00 00 00 00 00 00 eb 1b 8d 76 00 56 68 22 b0 18 >>EIP; c0120825 <kfree+179/1a8> <===== Trace; d09695ea <[usbcore]usb_destroy_configuration+66/1a8> Trace; d0976b8d <[usb-uhci]uhci_free_dev+29/30> Trace; d0968ad0 <[usbcore]usb_free_dev+24/30> Trace; d096993e <[usbcore]usb_disconnect+ea/f4> Trace; d096b659 <[usbcore]usb_hub_port_connect_change+2f9/324> Trace; d096b719 <[usbcore]usb_hub_events+95/1f0> Trace; d09710e7 <[usbcore]usb_bandwidth_option+18a7/20b4> Trace; d0970001 <[usbcore]usb_bandwidth_option+7c1/20b4> Trace; d097253c <[usbcore]__ksymtab_usb_inc_dev_use+4/8> Trace; d096b8bd <[usbcore]usb_hub_thread+49/6c> Trace; d0968050 <[usbcore].text.start+4/8c> Trace; c0107b8b <kernel_thread+23/30> Trace; d0968000 <[serial].bss.end+778d/77d9> Code; c0120825 <kfree+179/1a8> 00000000 <_EIP>: Code; c0120825 <kfree+179/1a8> <===== 0: c7 05 00 00 00 00 00 movl $0x0,0x0 <===== Code; c012082c <kfree+180/1a8> 7: 00 00 00 Code; c012082f <kfree+183/1a8> a: eb 1b jmp 27 <_EIP+0x27> c012084c <kfree+1a0/1a8> Code; c0120831 <kfree+185/1a8> c: 8d 76 00 lea 0x0(%esi),%esi Code; c0120834 <kfree+188/1a8> f: 56 push %esi Code; c0120835 <kfree+189/1a8> 10: 68 22 b0 18 00 push $0x18b022 1 warning issued. Results may not be reliable. -- David Airlie, Software Engineer http://www.skynet.ie/~airlied / [EMAIL PROTECTED] pam_smb / Linux DecStation / Linux VAX / ILUG person - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/