Name: Enable signals for usermode helpers
Author: Linus Torvalds
Status: Experimental

D: Stelian Pop reported that all signals are blocked in processes
D: execed from the kernel as usermode helpers.

diff -urpN --exclude TAGS -X /home/rusty/devel/kernel/kernel-patches/current-dontdiff --minimal linux-2.5.62-bk6/kernel/kmod.c working-2.5.62-bk6-usermode-sig/kernel/kmod.c
--- linux-2.5.62-bk6/kernel/kmod.c	2003-02-18 11:18:57.000000000 +1100
+++ working-2.5.62-bk6-usermode-sig/kernel/kmod.c	2003-02-24 12:18:55.000000000 +1100
@@ -152,6 +152,14 @@ static int ____call_usermodehelper(void 
 	struct subprocess_info *sub_info = data;
 	int retval;
 
+	/* Unblock all signals. */
+	flush_signals(curtask);
+	flush_signal_handlers(curtask);
+	spin_lock_irq(&curtask->sighand->siglock);
+	sigemptyset(&curtask->blocked);
+	recalc_sigpending();
+	spin_unlock_irq(&curtask->sighand->siglock);
+
 	retval = -EPERM;
 	if (current->fs->root)
 		retval = execve(sub_info->path, sub_info->argv,sub_info->envp);