Code problem

[Heap Ho Tan <heaphotan@xxxxxxxxx>]

Hi,
I have the following piece of code for some reason it
kept crashing the kernel.

struct eventDest
{
  //Single lock for the whole data-structure
  spinlock_t eventLock;
  int eventID;
  //declare a task list
  int nb_process;
  wait_queue_head_t queue;
  struct list_head event_list;
};

static spinlock_t event_lock;

int event_counter;

static LIST_HEAD(event_head);

int myeventopen()
{
  struct eventDest *event;
  struct eventDest tmp;
  spin_lock_irq(&event_lock);
  event_counter=event_counter+1;
  spin_unlock_irq(&event_lock);

  //printk("Ok up to here\n");
  event=(struct eventDest *)kmalloc(sizeof(tmp),
GFP_KERNEL);
  spin_lock_irq(&(event->eventLock));
  event->eventID=event_counter;
  //printk("Ok up to here 2\n");
  event->nb_process=0;
  list_add(&event_head, &(event->event_list));
  spin_unlock_irq(&(event->eventLock));
  //printk("Ok up to here 3\n"); 
  return event_counter;
}

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