diff -Nurp linux-2.6.22-640/drivers/char/hangcheck-timer.c linux-2.6.22-650/drivers/char/hangcheck-timer.c
--- linux-2.6.22-640/drivers/char/hangcheck-timer.c	2007-07-08 19:32:17.000000000 -0400
+++ linux-2.6.22-650/drivers/char/hangcheck-timer.c	2008-06-25 14:44:10.000000000 -0400
@@ -57,7 +57,7 @@
 
 static int hangcheck_tick = DEFAULT_IOFENCE_TICK;
 static int hangcheck_margin = DEFAULT_IOFENCE_MARGIN;
-static int hangcheck_reboot;  /* Defaults to not reboot */
+static int hangcheck_reboot = 1;  /* Defaults to reboot */
 static int hangcheck_dump_tasks;  /* Defaults to not dumping SysRQ T */
 
 /* options - modular */