I'm running current linux-git (5895198c56d131cc696556) and current qemu-git (d2d979c628e4b2c4a3c I think) with the attached kernel .config, and it gave me a GPF on exit from the emulator. I'm not sure which project is responsible, but I thought I'd throw it out there... Rob md: stopping all md devices. e1000 0000:00:03.0: PCI INT A disabled Restarting system. machine restart general protection fault: fff2 [#1] SMP last sysfs file: /sys/devices/virtual/cpuid/cpu0/dev CPU 0 Pid: 656, comm: oneit Not tainted 2.6.39-rc6+ #2 Bochs Bochs RIP: 0010:[] [] 0xffffffff8101e447 RSP: 0018:ffff880006c33e08 EFLAGS: 00000246 RAX: 00000000000000ff RBX: 0000000000000246 RCX: 00000000ffffffff RDX: ffffffff810226b0 RSI: 00000000000000ff RDI: 00000000000000f0 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0a74726174736572 R12: ffffffff816c5550 R13: 0000000000000000 R14: 0000000000000004 R15: 00000000004009e4 FS: 0000000000000000(0000) GS:ffff880007c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000609910 CR3: 0000000007bfa000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 0000000000000000 DR7: 0000000000000000 Process oneit (pid: 656, threadinfo ffff880006c32000, task ffff880006c38000) Stack: 00000000fee1dead 0000000028121969 0000000001234567 ffffffff8101dc0f 00000000004009e4 ffffffff8101d954 00000000fee1dead ffffffff8105b7b7 0000000000000000 0000000000000000 0000000000000000 0000000000000000 Call Trace: [] ? 0xffffffff8101dc0f [] ? 0xffffffff8101d954 [] ? 0xffffffff8105b7b7 [] ? 0xffffffff8103e5b1 [] ? 0xffffffff814d4883 [] ? 0xffffffff814d497b Code: 1f 44 00 00 74 1b 48 89 c3 bf c7 10 00 00 e8 51 b2 1b 00 49 8b 3c 24 f3 48 0f b8 c7 83 f8 01 77 d3 9c 5b fa e8 5b 0b 00 00 53 9d 72 ff ff ff 90 90 90 90 48 83 ec 08 48 8b 05 05 6d 6a 00 bf RIP [] 0xffffffff8101e447 RSP ---[ end trace 02dbd797d0ff85de ]---