oot@Springfall:~# for i in 1 2 3 4 5 6 7 8 9 10; do vboxmanage controlvm Junip er-${i} poweroff; sleep 5; done 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% [77104.109214] BUG: unable to handle kernel NULL pointer dereference at 00000001 [77104.116077] IP: [] rtR0MemObjLinuxFreePages+0x1c/0xa0 [vboxdrv] [77104.116077] *pdpt = 0000000000000000 *pde = f000eef300000000 [77104.116077] Oops: 0002 [#1] SMP [77104.116077] last sysfs file: /sys/devices/pci0000:00/0000:00:1d.1/usb7/7-2/devnum [77104.116077] Modules linked in: pci_stub vboxpci vboxnetadp vboxnetflt vboxdrv coretemp hwmon_vid snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss fu] [77104.116077] [77104.116077] Pid: 29176, comm: VBoxHeadless Not tainted 2.6.37.6-smp-custom.1 #3 System manufacturer P5Q Premium/P5Q Premium [77104.116077] EIP: 0060:[] EFLAGS: 00010202 CPU: 1 [77104.116077] EIP is at rtR0MemObjLinuxFreePages+0x1c/0xa0 [vboxdrv] [77104.116077] EAX: 00000058 EBX: ea863410 ECX: 00000000 EDX: 00000000 [77104.116077] ESI: 00000000 EDI: 00000018 EBP: ea17bdcc ESP: ea17bdc0 [77104.116077] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [77104.116077] Process VBoxHeadless (pid: 29176, ti=ea17a000 task=db037470 task.ti=ea17a000) [77104.116077] Stack: [77104.116077] ea863410 00000000 00000018 ea17bde0 fb9ad786 ea863410 00000000 00000018 [77104.116077] ea17be0c fb9abd6b e903b9d0 c10cdc3d 00000282 c10cddbb 00000000 e9017cd0 [77104.116077] ea863410 00000000 00000018 ea17be3c fb9a3cab ea863410 00000001 00000004 [77104.116077] Call Trace: [77104.116077] [] ? rtR0MemObjNativeFree+0x166/0x190 [vboxdrv] [77104.116077] [] ? VBoxHost_RTR0MemObjFree+0x6b/0x2e0 [vboxdrv] [77104.116077] [] ? put_compound_page+0x2d/0x40 [77104.116077] [] ? put_page+0x10b/0x110 [77104.116077] [] ? supdrvMemRelease+0x11b/0x160 [vboxdrv] [77104.116077] [] ? SUPR0MemFree+0x2f/0x40 [vboxdrv] [77104.719004] [] ? supdrvCleanupSession+0xef/0x310 [vboxdrv] [77104.719004] [] ? supdrvCloseSession+0x1e/0x50 [vboxdrv] [77104.719004] [] ? VBoxDrvLinuxClose+0x21/0x30 [vboxdrv] [77104.719004] [] ? fput+0xab/0x1f0 [77104.719004] [] ? filp_close+0x4e/0x70 [77104.719004] [] ? put_files_struct+0x6f/0xc0 [77104.719004] [] ? exit_files+0x40/0x50 [77104.719004] [] ? do_exit+0x13e/0x760 [77104.719004] [] ? do_group_exit+0x3e/0xa0 [77104.719004] [] ? sys_exit_group+0x18/0x20 [77104.719004] [] ? syscall_call+0x7/0xb [77104.719004] [] ? r8a66597_probe+0x6c/0x2ac [77104.719004] Code: 03 00 00 00 bf 00 00 00 80 e9 2f ff ff ff 90 55 89 e5 57 56 53 3e 8d 74 26 00 89 c3 8b 40 38 85 c0 74 3b 8d 74 26 00 8b 54 83 38 80 62 01 fb 83 e8 01 75 f2 80 7b 34 00 75 [77104.719004] EIP: [] rtR0MemObjLinuxFreePages+0x1c/0xa0 [vboxdrv] SS:ESP 0068:ea17bdc0 [77104.719004] CR2: 0000000000000001 [77105.007413] ---[ end trace a837eea64062b572 ]--- [77105.021422] Kernel panic - not syncing: Fatal exception [77105.037260] Pid: 29176, comm: VBoxHeadless Tainted: G D 2.6.37.6-smp-custom.1 #3 [77105.061929] Call Trace: [77105.069439] [] ? printk+0x1d/0x1f [77105.082418] [] panic+0x5c/0x14d [77105.094888] [] oops_end+0x83/0x90 [77105.107854] [] no_context+0xbc/0x190 [77105.121592] [] __bad_area_nosemaphore+0x8d/0x130 [77105.138450] [] ? scheduler_tick+0xa4/0x220 [77105.153744] [] bad_area_nosemaphore+0x17/0x20 [77105.169802] [] do_page_fault+0x239/0x370 [77105.184562] [] ? tick_dev_program_event+0x3a/0x140 [77105.201947] [] ? free_pcppages_bulk+0x2d1/0x350 [77105.218535] [] ? do_page_fault+0x0/0x370 [77105.233295] [] error_code+0x67/0x6c [77105.246746] [] ? __pte_alloc_kernel+0x1b/0x80 [77105.262793] [] ? rtR0MemObjLinuxFreePages+0x1c/0xa0 [vboxdrv] [77105.283017] [] rtR0MemObjNativeFree+0x166/0x190 [vboxdrv] [77105.302191] [] VBoxHost_RTR0MemObjFree+0x6b/0x2e0 [vboxdrv] [77105.321896] [] ? put_compound_page+0x2d/0x40 [77105.337691] [] ? put_page+0x10b/0x110 [77105.351677] [] supdrvMemRelease+0x11b/0x160 [vboxdrv] [77105.369804] [] SUPR0MemFree+0x2f/0x40 [vboxdrv] [77105.386391] [] ? supdrvCleanupSession+0xef/0x310 [vboxdrv] [77105.405839] [] ? supdrvCloseSession+0x1e/0x50 [vboxdrv] [77105.424501] [] ? VBoxDrvLinuxClose+0x21/0x30 [vboxdrv] [77105.442902] [] ? fput+0xab/0x1f0 [77105.455568] [] ? filp_close+0x4e/0x70 [77105.469563] [] ? put_files_struct+0x6f/0xc0 [77105.485106] [] ? exit_files+0x40/0x50 [77105.499108] [] ? do_exit+0x13e/0x760 [77105.512811] [] ? do_group_exit+0x3e/0xa0 [77105.527543] [] ? sys_exit_group+0x18/0x20 [77105.542576] [] ? syscall_call+0x7/0xb [77105.556543] [] ? r8a66597_probe+0x6c/0x2ac [77105.571840] panic occurred, switching back to text console