static int __init fm10k_init_module(void)
{
	pr_info("%s - version %s\n", fm10k_driver_string, fm10k_driver_version);
	pr_info("%s\n", fm10k_copyright);

	/* create driver workqueue */
	fm10k_workqueue = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0,
					  fm10k_driver_name);
	if (!fm10k_workqueue)
		return -ENOMEM;

	fm10k_dbg_init();

	return fm10k_register_pci_driver();
}
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.