From c5d0f15dbd8087f60b377fa9fc18d08698429189 Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Thu, 3 Feb 2011 14:14:09 +0100
Subject: [PATCH] libbb: spawn should remove child which failed to exec

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 libbb/vfork_daemon_rexec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libbb/vfork_daemon_rexec.c b/libbb/vfork_daemon_rexec.c
index af938bed3..a75eafbd3 100644
--- a/libbb/vfork_daemon_rexec.c
+++ b/libbb/vfork_daemon_rexec.c
@@ -52,6 +52,7 @@ pid_t FAST_FUNC spawn(char **argv)
 	 * Interested party can wait on pid and learn exit code.
 	 * If 111 - then it (most probably) failed to exec */
 	if (failed) {
+		safe_waitpid(pid, NULL, 0); /* prevent zombie */
 		errno = failed;
 		return -1;
 	}