id summary reporter owner description type status component version resolution keywords cc guest host 614 "VirtualBox hangs on ""Starting the virtual machine... 0%""" Nolan "When starting a VM with VirtualBox 1.5, it hangs on ""Starting the virtual machine..."" at 0%. I am forced to use kill -9 to kill the process - it hangs indefinitely. The dmesg output is below: {{{ [ 157.048000] CPU: 0 [ 157.048000] EIP: 0060:[] Tainted: PF VLI [ 157.048000] EFLAGS: 00210202 (2.6.20-15-generic #2) [ 157.048000] EIP is at split_vma+0x6f/0xe0 [ 157.048000] eax: 00000001 ebx: c03a9c98 ecx: 00000000 edx: 00000054 [ 157.048000] esi: b3f0c000 edi: 00000000 ebp: f5980668 esp: f5a8fdc4 [ 157.048000] ds: 007b es: 007b ss: 0068 [ 157.048000] Process VirtualBox (pid: 8157, ti=f5a8e000 task=f6604560 task.ti=f5a8e000) [ 157.048000] Stack: 00000000 00000000 b3f0c000 c03a9cb4 c03a9c98 b3f26000 c01676c8 00000000 [ 157.048000] f65899b0 ffffffff ffffffff b3f26000 00000007 00000000 0000001a b3f0c000 [ 157.048000] f6604560 f70b3490 f8fc1fb0 f6604560 00000007 f70b3490 f5a8fe60 00000027 [ 157.048000] Call Trace: [ 157.048000] [] do_munmap+0x98/0x1e0 [ 157.048000] [] rtR0MemObjNativeMapUser+0x260/0x270 [vboxdrv] [ 157.048000] [] RTR0MemObjMapUser+0xe0/0x190 [vboxdrv] [ 157.048000] [] SUPR0LowAlloc+0xc9/0x190 [vboxdrv] [ 157.048000] [] supdrvIOCtl+0x3df/0x1540 [vboxdrv] [ 157.048000] [] __vmalloc_area_node+0xdc/0x130 [ 157.048000] [] __switch_to+0xa0/0x1f0 [ 157.048000] [] VBoxSupDrvDeviceControl+0xeb/0x160 [vboxdrv] [ 157.048000] [] __switch_to+0xa0/0x1f0 [ 157.048000] [] __switch_to+0xa0/0x1f0 [ 157.048000] [] do_ioctl+0x78/0x90 [ 157.048000] [] vfs_ioctl+0x5c/0x2a0 [ 157.048000] [] sys_ioctl+0x72/0x90 [ 157.048000] [] sysenter_past_esp+0x69/0xa9 [ 157.048000] [] __switch_to+0xa0/0x1f0 [ 157.048000] ======================= [ 157.048000] Code: ba d0 00 00 00 e8 e2 b5 00 00 85 c0 89 c5 74 d2 b9 54 00 00 00 89 da e8 50 a3 08 00 85 ff 74 45 89 75 08 8b 45 48 85 c0 74 04 90 40 14 8b 45 40 85 c0 74 0a 8b 10 85 d2 74 04 89 e8 ff d2 85 [ 157.048000] EIP: [] split_vma+0x6f/0xe0 SS:ESP 0068:f5a8fdc4 }}} This is on Ubuntu 7.04 32-bit on an AMD64 processor, 2GB RAM, if that helps. " defect closed other VirtualBox 1.5.0 fixed other other