Date: Wed, 14 May 2003 20:07:16 +1000 From: Peter Jeremy <peterjeremy@optushome.com.au> To: Jonas Bulow <jonas@bulow.mine.nu> Cc: freebsd-stable <freebsd-stable@freebsd.org> Subject: Re: Kernel panic on FreeBSD 4.8-STABLE Message-ID: <20030514100716.GA4410@cirb503493.alcatel.com.au> In-Reply-To: <3EC10790.50809@bulow.mine.nu> References: <3EC10790.50809@bulow.mine.nu>
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On Tue, May 13, 2003 at 04:56:16PM +0200, Jonas Bulow wrote:
>I need some help to understand a backtrace.
>Fatal trap 9: general protection fault while in kernel mode
>instruction pointer = 0x8:0xc023ceeb
>stack pointer = 0x10:0xcf7d9ea4
>frame pointer = 0x10:0xcf7d9ec0
>code segment = base 0x0, limit 0xfffff, type 0x1b
> = DPL 0, pres 1, def32 1, gran 1
>processor eflags = resume, IOPL = 0
>current process = Idle
>interrupt mask = net tty bio cam
>trap number = 9
>panic: general protection fault
...
>#17 0xc023d6fb in trap (frame={tf_fs = 16, tf_es = 134938640, tf_ds =
>-982253552, tf_edi = -971835344, tf_esi = 32,
> tf_ebp = -813850944, tf_isp = -813850992, tf_ebx = -1070885216,
>tf_edx = -812732416, tf_ecx = -831483840,
> tf_eax = 336283586, tf_trapno = 9, tf_err = 32, tf_eip =
>-1071395093, tf_cs = 8, tf_eflags = 65670, tf_esp = -1072211888,
> tf_ss = -831471360}) at /usr/src/sys/i386/i386/trap.c:636
>#18 0xc023ceeb in sw1a ()
>#19 0xc0174ff1 in tsleep (ident=0xce70c100, priority=288,
>wmesg=0xc02530a5 "wait", timo=0) at /usr/src/sys/kern/kern_synch.c:479
#18 is the underlying problem. sw1a() is in /sys/i386/i386/swtch.s
and you might like to disassemble the code around 0xc023ceeb to see
exactly where it is dying. GPF is a catch-all category so it's
difficult to know exactly why you're getting it without knowing the
actual instruction it dies on.
Peter
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