Date: Mon, 21 May 2001 18:03:11 +0800 From: =?gb2312?B?WWluZy5zdW4gW4xP+pdd?= <Ying.sun@mic.com.tw> To: "'questions@FreeBSD.org'" <questions@FreeBSD.org> Subject: about kld Message-ID: <7B59A702921AD411A50A00D0B72029E40441F4@MRSPDC>
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hi:
i copy a module file as fallow:
#include <sys/types.h>
#include <sys/module.h>
#include <sys/systm.h> /* uprintf */
#include <sys/errno.h>
#include <sys/param.h> /* defines used in kernel.h */
#include <sys/kernel.h> /* types used in module initialization */
/*
* Load handler that deals with the loading and unloading of a KLD.
*/
static int
skel_loader(struct module *m, int what, void *arg)
{
int err = 0;
switch (what) {
case MOD_LOAD: /* kldload */
uprintf("Skeleton KLD loaded.\n");
break;
case MOD_UNLOAD:
uprintf("Skeleton KLD unloaded.\n");
break;
default:
err = EINVAL;
break;
}
return(err);
}
/* Declare this module to the rest of the kernel */
DECLARE_MODULE(skeleton, skel_loader, SI_SUB_KLD, SI_ORDER_ANY);
Makefile as fallow:
SRCS=skeleton.c
KMOD=skeleton
.include <bsd.kmod.mk>
but when i exeute : kldload -v ./skeleton.ko
it is error,the error message as fallow:
Fatal trap 12:page fault while in kernel mode
fault virtual address =0x83e58955
fault code = suppervisor read,page not present
instruction pointer = 0x8:0xc02b8af8
stack pointer = 0x10:0xc95b6e98
frame pointer = 0x1:0xc95b6e98
code segment = base 0x0 limit 0xfffff ,type 0x1b
= DPL 0 ,pres 1,def32 1,gran 1
process eflags = interrupt enabled ,resume,IOPL = 0
current process = 8346(kldload)
interrupt mask = none
trap number = 12
panic :page default
please tell why ,and how resolve it
by the way the version of the freebsd is 4.3
the best regard
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