Date: Thu, 02 May 2002 11:16:11 -0400 (EDT) From: John Baldwin <jhb@FreeBSD.org> To: Harald Schmalzbauer <H@Schmalzbauer.de> Cc: freebsd-current@FreeBSD.org Subject: Re: CD-Boot hangs on rootmounting MD (+DP1 crashes) Message-ID: <XFMail.20020502111611.jhb@FreeBSD.org> In-Reply-To: <1020351976.4519.2.camel@hry.muc.wearix.com>
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On 02-May-2002 Harald Schmalzbauer wrote: > Am Do , 2002-05-02 um 17.44 schrieb John Baldwin: >> >> On 02-May-2002 Harald Schmalzbauer wrote: >> > Am Do , 2002-05-02 um 13.29 schrieb Harald Schmalzbauer: >> > >> > PXEbooting the -stable kernel.gz and mfsroot results in the same system >> > hang (mounting root from ufs:/dev/md0c). >> > >> > DP1 crashes with the following: >> > unknown: <PNP0303> can't assign resources (port) >> > unknown: <PNP0c03> can't assign resources (memory) >> > psmcpnp0: irq resource info is missing; assuming irq 12 >> > >> > Fatal trap12: page fault while in kernel mode >> > fault virtual address = 0x0 >> > fault code = supervisor read, page not present >> > instruction pointer = 0x8:0xc164cac1 >> > stack pointer = 0x10:0xcb931d00 >> > frame pointer = 0x10:0xcb931d1c >> > 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 = 27 (irq10: sn0) >> > trap number = 12 >> > panic: page fault >> >> Can you stick ddb in this kernel adn get a traceback? It's a NULL >> pointer dereference bug. >> >> Actually, for DP1, isn't ddb already in the kernel? > > Of course, but somebody needs to tell me what to do (I wrote the last > line of code 12 years ago in Pascal, and I've never used gdb) > > I think I can remember that there is some debuging FAQ but I can't read > it NOW (perhaps at the weekend) > > If it isn't too complicated and understanding the things I'm typing is > not needed, just tell me what to do (outside the list?) Well, when you boot dp1 you should get a 'db>' prompt after the panic. Just type 't' to get a backtrace, then mail the contents of that trace to the list. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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