Date: Tue, 14 May 1996 15:58:07 +0200 (MET DST) From: grog@lemis.de (Greg Lehey) To: current@freebsd.org Subject: More on the ktrace panic Message-ID: <199605141358.PAA11697@allegro.lemis.de>
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I started a set of looping ktrace processes and was able to repeat what I am pretty sure is the same panic. Here are the details, copied from the ddb output: Fatal trape 12: page fault while in kernel mode fault virtual address = 0xdeadc0de (:-) fault code = supervisor read, page not present instruction pointer = 0x8:0xf0117a54 stack pointer = 0x10:0xefbffc1c frame pointer = 0x10:0xefbffc38 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 = 19593 (ppp) interrupt mask = net tty bio kernel: type 12 trap, code=0 Stopped at _free+0x174: movl 0(%eax),%eax stack trace: _free+0x174 _allocbuf+0x1c8 _ffs_realloccg+0x3d5 _ffs_balloc+0x30e _ffs_write+0x2e5 _ktrwrite+0xcd _ktrgenio+0xa5 _write+0xf9 _syscall+0x195 And after typing all that in, I got a dump this time :-) The valued 0xdeadc0de doesn't sound that random to me. I'll follow it up, but if anybody else can give me a pointer, I'd be grateful. Greg
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