Date: Mon, 23 Aug 1999 13:28:14 -0400 (EDT) From: Bill Paul <wpaul@skynet.ctr.columbia.edu> To: current@freebsd.org Subject: Monday strikes again Message-ID: <199908231728.NAA06165@skynet.ctr.columbia.edu>
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Must... control... fist of death... I just tried to boot the latest -current snapshot (Aug 23) on my little 486/66 machine. The kern.flp kernel panics right after saying "Probing for PnP devices:". Now, this machine has a PCI bus but it doesn't support ISA plug and play, so before any of you lot start theorizing about possible PnP BIOS problems, don't. The panic message says the kernel dies because of a page fault trying to reference memory location 0x4 (which is in page 0, which isn't mapped, which means this is a NULL pointer dereference) at PC 0xc0175b20. Running "nm kernel | grep c0175b" on the install kernel yields: c0175b68 t cnuninit c0175bc8 t sysctl_kern_consmute Running "nm kernel | grep c0175a" on the install kernel yields: c0175a50 T cninit c0175afc T cninit_finish c0175a50 t gcc2_compiled. c0175a08 t l_noclose c0175a14 T l_noread c0175a2c t l_norint c0175a38 t l_nostart c0175a20 T l_nowrite c0175a44 t l_nullioctl My money says the problem is cninit_finish(). The hardware config of this machine is as follows: 486DX2-S 66Mhz CPU 16MB RAM Diamond Speedstar ISA SVGA adapter (ET4000 chipset, 1MB RAM) IDE disk controller Maxtor LTX-200A IDE disk 3.5" floppy drive 2 serial ports, one parallel port Integrated Micro Systems PCI bridge Compaq NetFlex 3/P PCI ethernet adapter D-Link DFE-550TX PCI ethernet adapter The machine is running a -current snapshot from August 9th which works fine (or at least, it did after I fixed the PCI bridge detection breakage that screwed it up last time). It looks like the major difference is that /sys/i386/i386/cons.c was taken away and replaced with some MI console routines in /sys/kern. My gut tells me that console initialization is failing because it can't find the ISA graphics adapter for some reason. Anybody have any bright ideas where I can start looking for the problem? -Bill -- ============================================================================= -Bill Paul (212) 854-6020 | System Manager, Master of Unix-Fu Work: wpaul@ctr.columbia.edu | Center for Telecommunications Research Home: wpaul@skynet.ctr.columbia.edu | Columbia University, New York City ============================================================================= "It is not I who am crazy; it is I who am mad!" - Ren Hoek, "Space Madness" ============================================================================= To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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