[<0>] rtR0SemEventMultiLnxWait.isra.0+0x40f/0x450 [vboxdrv]
[<0>] VBoxHost_RTThreadUserWaitNoResume+0x59/0x90 [vboxdrv]
[<0>] supdrvTscDeltaThread+0x67/0x600 [vboxdrv]
[<0>] rtThreadMain+0x37/0x80 [vboxdrv]
[<0>] rtThreadNativeMain+0x1b/0x30 [vboxdrv]
[<0>] kthread+0xda/0x100
[<0>] ret_from_fork+0x22/0x30
