From d691958b0b3d0fa53a9231ee81efb53073b7119c Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Sun, 23 Feb 2003 03:18:14 -0800
Subject: [PATCH] [PATCH] Enable signals for usermode helpers

Stelian Pop reported that all signals are blocked in processes
execed from the kernel as usermode helpers.
---
 kernel/kmod.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/kernel/kmod.c b/kernel/kmod.c
index a715e06ab4a76..01c18cacc58b4 100644
--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -152,6 +152,14 @@ static int ____call_usermodehelper(void *data)
 	struct subprocess_info *sub_info = data;
 	int retval;
 
+	/* Unblock all signals. */
+	flush_signals(current);
+	spin_lock_irq(&current->sighand->siglock);
+	flush_signal_handlers(current);
+	sigemptyset(&current->blocked);
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+
 	retval = -EPERM;
 	if (current->fs->root)
 		retval = execve(sub_info->path, sub_info->argv,sub_info->envp);
-- 
2.53.0