On Thu, 10 Apr 2014 21:38:20 +0200 Oleg Nesterov <o...@redhat.com> wrote:
> I _think_ that the kernel thread can only return from "call *%rbx" if > it is no longer a kernel thread, iow, do_execve() was called. Ah right. But only in special cases. Actually, it only returns if the function in kernel_thread() returns, and in the case of ____call_usermodehelper, it does an exec and returns on success. But if it fails, it needs to call do_exit(). Thus, it's not sufficient to just say "only if do_execve is called" but to say, if the handler that is called is only allowed to return iff it did a execve first and succeeded. -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
