diff -Nupr src.orig/kernel/sys.c src/kernel/sys.c --- src.orig/kernel/sys.c 2020-09-03 11:48:30.725726836 -0400 +++ src/kernel/sys.c 2020-09-03 11:48:45.101771811 -0400 @@ -559,8 +559,15 @@ SYSCALL_DEFINE4(reboot, int, magic1, int return ret; } +void kpatch_bar(void) +{ + if (!jiffies) + printk("kpatch_foo\n"); +} + static void deferred_cad(struct work_struct *dummy) { + kpatch_bar(); kernel_restart(NULL); }