__warn
__warn(__FILE__, __LINE__, (void *)regs->ip, TAINT_WARN, regs, NULL);
void __warn(const char *file, int line, void *caller, unsigned taint,
__warn(NULL, 0, (void *)addr, 0, regs, NULL);
__warn(file, line, __builtin_return_address(0), taint,
__warn(file, line, __builtin_return_address(0), taint, NULL, &args);
__warn(file, line, (void *)bugaddr, BUG_GET_TAINT(bug), regs,