Hello, Can anyone give pointers where to start looking for more information about the problem below? My little experience so far is with nic drivers and I don't have time to start reading on usb guts, unfortunately.
----- Forwarded message from Jaakko Niemi <[EMAIL PROTECTED]> ----- From: Jaakko Niemi <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Date: Mon, 14 Jun 2004 13:39:55 +0300 Subject: Re: [Linux-usb-users] Edgeport problems On Tue, 08 Jun 2004, Jaakko Niemi wrote: > Hello, > > I have couple different problems with two different Edgeport boxes, > which are hooked into a Dell PowerEdge 1750 with ServerWorks OSB4/CSB5 > ohci usb controller, running 2.4.26 without any patches. > > First, with older Edgeport/8, if I try to access any of /dev/ttyUSBx > devices, the machine hangs hard. Not even a blip on serial console, > nor to normal console, even with debug=1 option given to the > io_edgeport driver. Now, how does one debug hangs like this? Ok, here we go. Anyone? ksymoops 2.4.9 on i686 2.4.26es. Options used -V (default) -k /proc/ksyms (default) -l /proc/modules (default) -o /lib/modules/2.4.26es/ (default) -m /boot/System.map-2.4.26es (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. NMI Watchdog detected LOCKUP on CPU1, eip f8b9cedb, registers: CPU: 1 EIP: 0060:[<f8b9cedb>] Not tainted Using defaults from ksymoops -t elf32-i386 -a i386 EFLAGS: 00000086 eax: 00000003 ebx: 00000040 ecx: f76fa000 edx: eba8a000 esi: eb6e8800 edi: 00000012 ebp: eb8b33c0 esp: c19b5e54 ds: 0068 es: 0068 ss: 0068 Process swapper (pid: 0, stackpage=c19b5000) Stack: eb3a6c00 00000282 ffffffff 37000000 00000001 00000000 00000202 00000000 c0408380 00000026 eb8b33c0 eba8a000 0000000a 00000001 eb6e8800 00000012 eb8b33c0 f8b8766d eb926880 f8ba7910 eb926880 f8bac83c f8bac855 00000003 Call Trace: [<f8b8766d>] [<f8ba7910>] [<f8bac83c>] [<f8bac855>] [<f8b994b0>] [<f8b9b91a>] [<f8b9c6bd>] [<c01097c9>] [<c01099e8>] [<c01053b0>] [<c010c358>] [<c01053b0>] [<c01053d9>] [<c0105472>] [<c011d105>] [<c011d37f>] Code: 7e f8 e9 ad c6 ff ff 80 7b 28 00 f3 90 7e f8 e9 0c cc ff ff >>EIP; f8b9cedb <[usb-ohci].text.lock.usb_ohci+6/74> <===== >>ecx; f76fa000 <_end+3730a420/38558480> >>edx; eba8a000 <_end+2b69a420/38558480> >>esi; eb6e8800 <_end+2b2f8c20/38558480> >>ebp; eb8b33c0 <_end+2b4c37e0/38558480> >>esp; c19b5e54 <_end+15c6274/38558480> Trace; f8b8766d <[usbcore]usb_submit_urb+3d/40> Trace; f8ba7910 <[io_edgeport]edge_interrupt_callback+110/340> Trace; f8bac83c <[io_edgeport].rodata.end+61/2325> Trace; f8bac855 <[io_edgeport].rodata.end+7a/2325> Trace; f8b994b0 <[usb-ohci]sohci_return_urb+f0/120> Trace; f8b9b91a <[usb-ohci]dl_done_list+ca/110> Trace; f8b9c6bd <[usb-ohci]hc_interrupt+1ad/220> Trace; c01097c9 <handle_IRQ_event+79/b0> Trace; c01099e8 <do_IRQ+98/f0> Trace; c01053b0 <default_idle+0/50> Trace; c010c358 <call_do_IRQ+5/d> Trace; c01053b0 <default_idle+0/50> Trace; c01053d9 <default_idle+29/50> Trace; c0105472 <cpu_idle+52/70> Trace; c011d105 <call_console_drivers+65/120> Trace; c011d37f <printk+14f/180> Code; f8b9cedb <[usb-ohci].text.lock.usb_ohci+6/74> 00000000 <_EIP>: Code; f8b9cedb <[usb-ohci].text.lock.usb_ohci+6/74> <===== 0: 7e f8 jle fffffffa <_EIP+0xfffffffa> <===== Code; f8b9cedd <[usb-ohci].text.lock.usb_ohci+8/74> 2: e9 ad c6 ff ff jmp ffffc6b4 <_EIP+0xffffc6b4> Code; f8b9cee2 <[usb-ohci].text.lock.usb_ohci+d/74> 7: 80 7b 28 00 cmpb $0x0,0x28(%ebx) Code; f8b9cee6 <[usb-ohci].text.lock.usb_ohci+11/74> b: f3 90 repz nop Code; f8b9cee8 <[usb-ohci].text.lock.usb_ohci+13/74> d: 7e f8 jle 7 <_EIP+0x7> Code; f8b9ceea <[usb-ohci].text.lock.usb_ohci+15/74> f: e9 0c cc ff ff jmp ffffcc20 <_EIP+0xffffcc20> 1 warning issued. Results may not be reliable. ----- End forwarded message ----- ------------------------------------------------------- This SF.Net email is sponsored by The 2004 JavaOne(SM) Conference Learn from the experts at JavaOne(SM), Sun's Worldwide Java Developer Conference, June 28 - July 1 at the Moscone Center in San Francisco, CA REGISTER AND SAVE! http://java.sun.com/javaone/sf Priority Code NWMGYKND _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel