Date: Wed, 05 Nov 2003 18:17:01 -0500 (EST) From: John Baldwin <jhb@FreeBSD.org> To: Juan Rodriguez Hervella <jrh@it.uc3m.es> Cc: freebsd-bugs@FreeBSD.org Subject: RE: FreeBSD-4.9.0-release, "page fault while in kernel mode" Message-ID: <XFMail.20031105181701.jhb@FreeBSD.org> In-Reply-To: <200311041903.11845.jrh@it.uc3m.es>
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On 04-Nov-2003 Juan Rodriguez Hervella wrote: > Hello, > > I've got this fault when my machine was rebooting. > > Fortunately I've got the "kernel.0" and "vmcore.0" > files on /var/crash. > > If you need more info please ask me, I'm not an expert > on kgdb.... > > PS: If you want more info, reply to me directly because I'm not subscribe to > the list ! > > Thanks! > > > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0x70 > fault code = supervisor read, page not present > instruction pointer = 0x8:0xc025577c > stack pointer = 0x10:0xc0461628 > frame pointer = 0x10:0xc046164c > 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 = Idle > interrupt mask = net tty bio cam > trap number = 12 > panic: page fault > > syncing disks... BTW, if you have a kernel.debug for this kernel, if you can pop into gdb and do 'l *0xc02577c' that might help figure out where it is breaking and help it get fixed. If you don't have a kernel.debug (kernel built with config -g) but this is easily reproducible, then you can build a debug kernel, reproduce it, and use the instruction pointer address for the first fault from that panic in the gdb command instead. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
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