In message: <41877.147.83.40.213.1240324705.squirrel_at_webmail.entel.upc.edu> "Gustavo Perez Querol" <gperez_at_entel.upc.edu> writes: : > lists : > boot panic on current(2009.04.20).it seems caused by usbus4 : > : > Root mount waiting for: usbus4 : > uhub4: 8 ports with 8 removable, self powered : > Root mount waiting for: usbus4 : > ugen4.2: <NEC> at usbus4 : > Fatal trap 12: page fault while in kernel mode : > cpuid = 0; apic id = 00 : > fault virtual address = 0x0 : > fault code = supervisor read, page not present : > instruction pointer = 0x20:0xc08ed3a3 : > stack pointer = 0x28:0xe4c38b40 : > frame pointer = 0x28:0xe4c38b44 : > code segment = base 0x0, limit 0xfffff, type 0x1b : > = DPL 0,pres 1, def32 1, gran 1 : > processor eflags = interrupt enabled, resume, IOPL = 0 : > current process = 28 (usbus4) : > trap number = 12 : > panic: page fault : > cpuid = 0 : > uptime: 5s : : I'm having the same problem with my laptop. It fails (if I remember : well) when checkig an <O2 Micro> device (probably my card reader, don't : know). When rebooting got to loader prompt, unload kernel and load : /boot/kernel.old/kernel. This arrises a few questions : : : 1.- How can I install a custom kernel under a different directory : under /boot. I did it, but I can't find how (google doesn't : help)I did it. I think there's a define when installing the : kernel. make installkernel KERNEL=fred will install the kernel into /boot/fred. Might want to look add # Debugging for use in -current options KDB # Enable kernel debugger support. options DDB # Support DDB. to the kernel so you can get a traceback... : 2.- nextboot allows me to choose a different kernel a give it : options, but is it possible to make the changes permanent ? Not sure. I don't use nextboot. : Well, now I'm csup down to current 18/04. Hope it will work :) : : Excuse me for the previous mail, that webmail I'm using is driving me : more crazy :) Web mail has been known to do that to me too.... :) WarnerReceived on Wed Apr 22 2009 - 03:51:05 UTC
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