if (sl->xbuff)  { kfree(sl->xbuff); } 
kfree(sl->xbuff); 
static void x25_asy_free(struct x25_asy *sl){	/* Free all X.25 frame buffers. */	if (sl->rbuff)  {		kfree(sl->rbuff);	}	sl->rbuff = NULL;	if (sl->xbuff)  {		kfree(sl->xbuff);	}	sl->xbuff = NULL;	if (!test_and_clear_bit(SLF_INUSE, &sl->flags)) {		printk("%s: x25_asy_free for already free unit.\n", sl->dev->name);	}}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/6a5d362120a61a719095443194cc2d5e9a7027dd/x25_asy.c/buggy/drivers/net/wan/x25_asy.c