i've only used the generic 6.0 kernel
# kgdb kernel.debug /var/crash/vmcore.1
[GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so:
Undefined symbol "ps_pglobal_lookup"]
GNU gdb 6.1.1 [FreeBSD]
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This GDB was configured as "i386-marcel-freebsd".
Unread portion of the kernel message buffer:
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x10
fault code = supervisor read, page not present
instruction pointer = 0x20:0xc0a7cf08
stack pointer = 0x28:0xd56a694c
frame pointer = 0x28:0x0
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 = 29 (swi1: net)
trap number = 12
panic: page fault
Uptime: 1d23h40m51s
Dumping 511 MB (2 chunks)
chunk 0: 1MB (159 pages) ... ok
chunk 1: 511MB (130800 pages) 495 479 463 447 431 415 399 383 367 351 335
319 303 287 271 255 239 223 207 (CTRL-C to abort) (CTRL-C to abort)
(CTRL-C to abort) 191 175 159 143 127 111 95 79 63 47 31 15
#0 doadump () at pcpu.h:165
165 pcpu.h: No such file or directory.
in pcpu.h
(kgdb) where
#0 doadump () at pcpu.h:165
#1 0xc0638202 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:399
#2 0xc0638498 in panic (fmt=0xc084e5a2 "%s")
at /usr/src/sys/kern/kern_shutdown.c:555
#3 0xc0807c30 in trap_fatal (frame=0xd56a690c, eva=16)
at /usr/src/sys/i386/i386/trap.c:831
#4 0xc080799b in trap_pfault (frame=0xd56a690c, usermode=0, eva=16)
at /usr/src/sys/i386/i386/trap.c:742
#5 0xc08075d9 in trap (frame=
{tf_fs = -1038680056, tf_es = 40, tf_ds = 40, tf_edi = 0, tf_esi =
-646886620, tf_ebp = 0, tf_isp = -714446536, tf_ebx = -646862464, tf_edx =
791735, tf_ecx = -1073475471, tf_eax = 1, tf_trapno = 12, tf_err = 0, tf_eip
= -1062744312, tf_cs = 32, tf_eflags = 66050, tf_esp = 16798208, tf_ss = 0})
at /usr/src/sys/i386/i386/trap.c:432
#6 0xc07f6dca in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#7 0xc0a7cf08 in ?? ()
On 12/13/05, Peter Jeremy <[EMAIL PROTECTED]> wrote:
>
> On Tue, 2005-Dec-13 13:43:13 -0400, fredthetree wrote:
> >[/var/crash/vmcore.1]
> >----------------------------------
> >Unread portion of the kernel message buffer:
> >
> >
> >Fatal trap 12: page fault while in kernel mode
> >fault virtual address = 0x10
>
> That's a NULL pointer de-reference - it Shouldn't Happen(TM). Can you
> get a backtrace from kgdb ("where")?
>
> >[vmcore.0]
> >----------------------------------
> >Unread portion of the kernel message buffer:
> >ÃwÄ0¿Á0ÂÁ"ÀíÁÀJðÂÄüÂ3ÄÓÂÀíÁÀóÂDþÁÀóÂðCÂÀíÁ1Ä
> >ÃðÚÃÀíÁ´ÂÄBð°ÄÁÀíÁ"[EMAIL PROTECTED]@
> >----------------------------------
>
> The most likely problem is that your vmcore file doesn't match your
> kernel.
> Are you running kgdb with the same kernel as was running when the system
> crashed? (If you don't have that kernel handy, you might as well delete
> vmcore.0).
>
> --
> Peter Jeremy
>
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