problem in kernel module

cranium2004 · 04-14-2005, 01:33 AM

hello,
Why am i getting oops in following kernel module on RH9 linux with 2.4.20-8 kernel? want to print time in kernel

#define __KERNEL__
#define MODULE
#include <linux/module.h>
#include <linux/config.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/time.h>

static int __init tt_init(void)
{
struct timeval *mytime=NULL;

do_gettimeofday(mytime);
printk(KERN_DEBUG "sec is = %ld\n",mytime->tv_sec);
return 0;
}

static void __exit tt_exit(void)
{

printk(KERN_DEBUG "LEaving Module\n");
}

module_init(tt_init);
module_exit(tt_exit);
MODULE_LICENSE("GPL");

freegianghu · 04-14-2005, 03:10 AM

I think:

Quote:

static int __init tt_init(void)
{
struct timeval *mytime=NULL;

do_gettimeofday(mytime);
printk(KERN_DEBUG "sec is = %ld\n",mytime->tv_sec);
return 0;
}

shold be:

Code:

static int __init tt_init(void)
{
  struct timeval mytime;
  do_gettimeofday(&mytime);
  printk(KERN_DEBUG "sec is = %ld\n",mytime.tv_sec);
  return 0;
}