[Lguest] 2.6.32-rc5 guest crash

[Johannes Stezenbach]

Hi,

I'm using linux-2.6.32-rc5-81-g964fe08 as both host and guest,
and the guest crashes on boot:

Calibrating delay loop... 
general protection fault: 0000 [#1] PREEMPT SMP 
last sysfs file: 
Modules linked in:

Pid: 0, comm: swapper Not tainted (2.6.32-rc5 #1) 
EIP: 0061:[<c11f915d>] EFLAGS: 00010046 CPU: 0
EIP is at cmpxchg8b_emu+0x1/0x12
EAX: 0032dbfd EBX: 0065b7f9 ECX: 00000000 EDX: 00000000
ESI: c2290090 EDI: 00000000 EBP: c1693dec ESP: c1693db8
 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0069
Process swapper (pid: 0, ti=c1692000 task=c16afee0 task.ti=c1692000)
Stack:
 00000246 c105c6d7 0065b7f9 00000000 c2290080 c2290090 0032dbfd 00000000
<0> 0032dbfd 00000000 c18da080 00000000 c16b03f0 c1693e2c c105c818 cf8044f4
<0> 00000000 00000000 00000000 00000000 00000000 c2290080 00000000 00000000
Call Trace:
 [<c105c6d7>] ? sched_clock_local+0xe5/0x105
 [<c105c818>] ? sched_clock_cpu+0x121/0x135
 [<c105c850>] ? cpu_clock+0x24/0x5b
 [<c10015ac>] ? save_fl+0x8/0xf
 [<c1067231>] ? __lock_acquire+0x527/0x8d1
 [<c106768e>] ? lock_acquire+0xb3/0xd0
 [<c1062d48>] ? tick_periodic+0x1a/0x77
 [<c1463992>] ? _spin_lock+0x2d/0x5d
 [<c1062d48>] ? tick_periodic+0x1a/0x77
 [<c1062d48>] ? tick_periodic+0x1a/0x77
 [<c1062dc2>] ? tick_handle_periodic+0x1d/0x77
 [<c10019ac>] ? lguest_time_irq+0x2a/0x4f
 [<c10052b9>] ? handle_irq+0x40/0x4b
 [<c1004a34>] ? do_IRQ+0x4a/0x9f
 [<c1003a6e>] ? common_interrupt+0x2e/0x34
 [<c1457b55>] ? calibrate_delay+0x16b/0x230
 [<c105fca5>] ? ktime_get+0x68/0xd0
 [<c105c976>] ? sched_clock_init+0x4d/0x67
 [<c17217bf>] ? start_kernel+0x27e/0x2e7
 [<c1721091>] ? i386_start_kernel+0x91/0x96
 [<c1722ffb>] ? lguest_init+0x2f8/0x2fe
Code: 24 18 83 e2 03 74 1f 83 fa 02 72 11 66 8b 16 8d 76 02 66 89 17 8d 7f 02 74 07 c1 e2 10 8a 16 88 17 01 d0 83 d0 00 5e 5f 5b c3 9c <fa> 3b 06 75 0c 3b 56 04 75 09 89 1e 89 4e 04 9d c3 8b 06 8b 56 
EIP: [<c11f915d>] cmpxchg8b_emu+0x1/0x12 SS:ESP 0069:c1693db8
---[ end trace 4eaa2a86a8e2da22 ]---
Kernel panic - not syncing: Fatal exception in interrupt
Pid: 0, comm: swapper Tainted: G      D    2.6.32-rc5 #1
Call Trace:
 [<c14605e8>] ? printk+0x14/0x16
 [<c146052a>] panic+0x48/0xf2
 [<c1464a12>] oops_end+0x7c/0x8a
 [<c1005fe3>] die+0x59/0x5f
 [<c14648bd>] do_general_protection+0x114/0x11c
 [<c14647a9>] ? do_general_protection+0x0/0x11c
 [<c14640ab>] error_code+0x6b/0x70
 [<c14647a9>] ? do_general_protection+0x0/0x11c
 [<c11f915d>] ? cmpxchg8b_emu+0x1/0x12
 [<c105c6d7>] ? sched_clock_local+0xe5/0x105
 [<c105c818>] sched_clock_cpu+0x121/0x135
 [<c105c850>] cpu_clock+0x24/0x5b
 [<c10015ac>] ? save_fl+0x8/0xf
 [<c1067231>] __lock_acquire+0x527/0x8d1
 [<c106768e>] lock_acquire+0xb3/0xd0
 [<c1062d48>] ? tick_periodic+0x1a/0x77
 [<c1463992>] _spin_lock+0x2d/0x5d
 [<c1062d48>] ? tick_periodic+0x1a/0x77
 [<c1062d48>] tick_periodic+0x1a/0x77
 [<c1062dc2>] tick_handle_periodic+0x1d/0x77
 [<c10019ac>] lguest_time_irq+0x2a/0x4f
 [<c10052b9>] handle_irq+0x40/0x4b
 [<c1004a34>] do_IRQ+0x4a/0x9f
 [<c1003a6e>] common_interrupt+0x2e/0x34
 [<c1457b55>] ? calibrate_delay+0x16b/0x230
 [<c105fca5>] ? ktime_get+0x68/0xd0
 [<c105c976>] ? sched_clock_init+0x4d/0x67
 [<c17217bf>] start_kernel+0x27e/0x2e7
 [<c1721091>] i386_start_kernel+0x91/0x96
 [<c1722ffb>] lguest_init+0x2f8/0x2fe
lguest: CRASH: Fatal exception in interrupt


The CPU is AMD Athlon(tm) X2 Dual Core Processor BE-2400.

A linux-2.6.31-rc6 guest kernel boots in the same
linux-2.6.32-rc5-81-g964fe08 host kernel.


Johannes