Be extra extra careful about what we dereference.

git-svn-id: svn://busybox.net/trunk/busybox@3004 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 4 insertions, 1 deletions

diff --git a/poweroff.c b/poweroff.c
index 007099d4d..8bb20e9bb 100644
--- a/poweroff.c
+++ b/poweroff.c
@@ -28,7 +28,10 @@ extern int poweroff_main(int argc, char **argv)
 {
 #ifdef BB_FEATURE_LINUXRC
         /* don't assume init's pid == 1 */
-        return(kill(*(find_pid_by_name("init")), SIGUSR2));
+        pid_t *pid = find_pid_by_name("init");
+        if (!pid || *pid<=0)
+                error_msg_and_die("no process killed");
+        return(kill(*pid, SIGUSR2));
 #else
         return(kill(1, SIGUSR2));
 #endif