Jun 30 09:02:03 tinker kernel: [ 980.515736] Jun 30 09:02:03 tinker kernel: [ 980.515738] ============================================= Jun 30 09:02:03 tinker kernel: [ 980.515741] [ INFO: possible recursive locking detected ] Jun 30 09:02:03 tinker kernel: [ 980.515744] 2.6.35.13-92.fc14.x86_64 #1 Jun 30 09:02:03 tinker kernel: [ 980.515745] --------------------------------------------- Jun 30 09:02:03 tinker kernel: [ 980.515748] VirtualBox/3195 is trying to acquire lock: Jun 30 09:02:03 tinker kernel: [ 980.515750] (&(&pThis->Spinlock)->rlock){+.+...}, at: [] RTSpinloc Jun 30 09:02:03 tinker kernel: [ 980.515767] Jun 30 09:02:03 tinker kernel: [ 980.515767] but task is already holding lock: Jun 30 09:02:03 tinker kernel: [ 980.515769] (&(&pThis->Spinlock)->rlock){+.+...}, at: [] RTSpinloc Jun 30 09:02:03 tinker kernel: [ 980.515781] Jun 30 09:02:03 tinker kernel: [ 980.515781] other info that might help us debug this: Jun 30 09:02:03 tinker kernel: [ 980.515783] 1 lock held by VirtualBox/3195: Jun 30 09:02:03 tinker kernel: [ 980.515785] #0: (&(&pThis->Spinlock)->rlock){+.+...}, at: [] RTSp Jun 30 09:02:03 tinker kernel: [ 980.515797] Jun 30 09:02:03 tinker kernel: [ 980.515797] stack backtrace: Jun 30 09:02:03 tinker kernel: [ 980.515800] Pid: 3195, comm: VirtualBox Not tainted 2.6.35.13-92.fc14.x86_64 #1 Jun 30 09:02:03 tinker kernel: [ 980.515802] Call Trace: Jun 30 09:02:03 tinker kernel: [ 980.515808] [] __lock_acquire+0x947/0xd63 Jun 30 09:02:03 tinker kernel: [ 980.515811] [] ? __lock_acquire+0x56c/0xd63 Jun 30 09:02:03 tinker kernel: [ 980.515821] [] ? RTSpinlockAcquire+0x12/0x14 [vboxdrv] Jun 30 09:02:03 tinker kernel: [ 980.515824] [] lock_acquire+0xd2/0xfd Jun 30 09:02:03 tinker kernel: [ 980.515833] [] ? RTSpinlockAcquire+0x12/0x14 [vboxdrv] Jun 30 09:02:03 tinker kernel: [ 980.515843] [] ? RTSemMutexRelease+0x70/0xc8 [vboxdrv] Jun 30 09:02:03 tinker kernel: [ 980.515848] [] _raw_spin_lock+0x31/0x40 Jun 30 09:02:03 tinker kernel: [ 980.515857] [] ? RTSpinlockAcquire+0x12/0x14 [vboxdrv] Jun 30 09:02:03 tinker kernel: [ 980.515867] [] RTSpinlockAcquire+0x12/0x14 [vboxdrv] Jun 30 09:02:03 tinker kernel: [ 980.515874] [] SUPR0ObjAddRefEx+0xc3/0x1ec [vboxdrv] Jun 30 09:02:03 tinker kernel: [ 980.515882] [] g_abExecMemory+0x4a226/0x180000 [vboxdrv] Jun 30 09:02:03 tinker kernel: [ 980.515893] [] RTHandleTableLookupWithCtx+0xac/0xd7 [vboxdrv] Jun 30 09:02:03 tinker kernel: [ 980.515896] [] ? __lock_acquire+0x56c/0xd63 Jun 30 09:02:03 tinker kernel: [ 980.515903] [] g_abExecMemory+0x4f34e/0x180000 [vboxdrv] Jun 30 09:02:03 tinker kernel: [ 980.515911] [] g_abExecMemory+0x14cba/0x180000 [vboxdrv] Jun 30 09:02:03 tinker kernel: [ 980.515915] [] ? lock_release_non_nested+0xa0/0x24f Jun 30 09:02:03 tinker kernel: [ 980.515919] [] ? __kmalloc+0x116/0x161 Jun 30 09:02:03 tinker kernel: [ 980.515927] [] g_abExecMemory+0x15b90/0x180000 [vboxdrv] Jun 30 09:02:03 tinker kernel: [ 980.515930] [] ? might_fault+0x5c/0xac Jun 30 09:02:03 tinker kernel: [ 980.515938] [] supdrvIOCtl+0x1321/0x22bd [vboxdrv] Jun 30 09:02:03 tinker kernel: [ 980.515941] [] ? lock_release+0x186/0x192 Jun 30 09:02:03 tinker kernel: [ 980.515944] [] ? might_fault+0xa5/0xac Jun 30 09:02:03 tinker kernel: [ 980.515947] [] ? might_fault+0x5c/0xac Jun 30 09:02:03 tinker kernel: [ 980.515954] [] VBoxDrvLinuxIOCtl+0x12d/0x1ae [vboxdrv] Jun 30 09:02:03 tinker kernel: [ 980.515958] [] vfs_ioctl+0x36/0xa7 Jun 30 09:02:03 tinker kernel: [ 980.515961] [] do_vfs_ioctl+0x47c/0x4af Jun 30 09:02:03 tinker kernel: [ 980.515964] [] ? lock_release+0x186/0x192 Jun 30 09:02:03 tinker kernel: [ 980.515967] [] ? rcu_read_unlock+0x21/0x23 Jun 30 09:02:03 tinker kernel: [ 980.515970] [] sys_ioctl+0x56/0x7c Jun 30 09:02:03 tinker kernel: [ 980.515974] [] system_call_fastpath+0x16/0x1b