Date: Sun, 27 Aug 1995 22:30:54 +0200 (MET DST) From: J Wunsch <j@uriah.heep.sax.de> To: hm@altona.hamburg.com Cc: freebsd-hackers@freebsd.org Subject: Re: SCSI CDROM autochanger access causes fatal trap 12 Message-ID: <199508272030.WAA07386@uriah.heep.sax.de> In-Reply-To: <m0smnAS-00000vC@ernie.altona.hamburg.com> from "Hellmuth Michaelis" at Aug 27, 95 09:14:51 pm
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As Hellmuth Michaelis wrote: > > Fatal trap 12: page fault while in kernel mode > Fault virtual address = 0x60 > Fault code = supervisor read, page not present > Instruction pointer = 0x8:0xf01250ac > Code segment = base 0x0 limit 0xfffff type 0x1b > = DPL 0, pres 1, def 321, gran 1 > Processor eflags = interrupt enabled, resume, IOPL = 0 > Current process = 470 (iozone) > Interrupt mask = bio > Kernel: type 12 trap, code = 0 > Stopped at _incore+0x48: cmpl %esi, 0x48(%ebx) > What can i do ? Is someone willing to help a bit to find the cause ? Can i convince you to use DDB? :-) If not, turn core dumps on, and try to take a post-mortem dump. The kernel-debug.FAQ might be of some help, though the section about how to prepare for core dumps is outdated in the version in 2.0.5. Simply add a `dumpon' command in your /etc/rc (after swapon has been run). -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-)
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