Description of problem: 
System hang on shutdown/reboot due to int3

Version-Release number of selected component (if applicable):
.\kernel-2.6.35.fc14\linux-2.6.35.x86_64\arch\x86\kernel\reboot.c

How reproducible:
100%

Steps to Reproduce:
1. Boot Fedora 14
2. Pull-down menu shutdown
3. Choose Restart
  
Actual results:
System hang

Expected results:
System Reboot

Additional info:
static void native_machine_emergency_restart(void) - Lines 562-579

	for (;;) {
		/* Could also try the reset bit in the Hammer NB */
		switch (reboot_type) {
		case BOOT_KBD:
			mach_reboot_fixups(); /* for board specific fixups */

			for (i = 0; i < 10; i++) {
				kb_wait();
				udelay(50);
				outb(0xfe, 0x64); /* pulse reset low */
				udelay(50);
			}

Note:  The “break;” for the “case BOOT_KBD:” statement is missing.
The code just falls through to handle a “Triple Fault”

		case BOOT_TRIPLE:
			load_idt(&no_idt);
			__asm__ __volatile__("int3");

			reboot_type = BOOT_KBD;
			break;
		{…}
	}