On Fri, Dec 10, 2010 at 1:49 PM, Giriprasad Deviprasad <g_pr21@xxxxxxxx> wrote:
>
> Hi,
>
> The following program hangs the kernel, when the insmod on it, is run. Can any one provide ideas why :
>
> #include <linux/module.h> // for init_module()
> #include <linux/proc_fs.h> // for create_proc_info_entry()
> #include <asm/io.h> // for inb(), outb()
>
> int my_func( char *buf, char **start, off_t off, int count, int *eof, void *data )
> {
> return 0;
> }
>
> char modname[] = "cmos";
> static int __init my_init( void )
> {
>
> struct proc_dir_entry *pde, *tmp;
> tmp = kmalloc(sizeof(struct proc_dir_entry), GFP_KERNEL);
Add here a check for tmp.
> pde= create_proc_entry(modname, S_IFDIR | S_IRUGO | S_IXUGO , tmp);
Move here the check for (pde).
>
> pde->nlink = 1;
> pde->read_proc = my_func;
> if(pde)
> printk("proc_create sucessfull name = %s\n", pde->name);
> else
> printk("proc_create not so sucessfull. Exiting........... \n");
> return 0;
Let us know what happens after you make this changes.
thanks,
Daniel.
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