Date: Mon, 21 Sep 1998 00:48:03 -0600 From: Brett Glass <brett@lariat.org> To: hackers@FreeBSD.ORG Subject: Remember those spontaneous crashes I was getting? Message-ID: <199809210650.AAA00276@lariat.lariat.org>
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Well, we still get one every day or two, at odd times. But I can ALWAYS
make them happen by piping dump through gzip to ftp to a disk on a remote
machine -- our usual backup procedure.
Anyway, when I first reported this crash, I was asked what message
appeared. Unfortunately, it flew by so fast that I couldn't tell what it
said! So, tonight, seeing that it was a slow night and no users were on, I
swapped the kernel for one with the debugger enabled and started the backup
procedure.
Sure enough, a crash. The screen said:
Fatal trap 9: general protection fault while in kernel mode
Instruction pointer = 0x8:0xf0176fb5
Stack pointer = 0x10:0xf0199000
Frame pointer = 0x10:0x0
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 =
kernel: type 9 trap, code = 0
Stopped at idle_loop_0x3d: jmp idle_loop
As I began to play with the debugger (I really didn't know the commands), I
saw:
wd0: interrupt timeout
wd0: status 50<rdy,seekdone> error 0
...which may not have meant anything, but then again....
What does all of this bode?
--Brett
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