nvidia drivers mutex lock

I'm running nvidia-drivers 375.66 with a GTX 1070 on FreeBSD-Current

This problem just started happening recently but, every so often my laptop
screen will just blank out and then I have to power cycle to get the
machine up and running again.

It seems to be a problem with nvidia drivers acquiring duplicate lock. Any
info on this?

Jun  2 02:29:41 blubee kernel: acquiring duplicate lock of same type:
"os.lock_mtx"
Jun  2 02:29:41 blubee kernel: 1st os.lock_mtx _at_ nvidia_os.c:841
Jun  2 02:29:41 blubee kernel: 2nd os.lock_mtx _at_ nvidia_os.c:841
Jun  2 02:29:41 blubee kernel: stack backtrace:
Jun  2 02:29:41 blubee kernel: #0 0xffffffff80ab7770 at
witness_debugger+0x70
Jun  2 02:29:41 blubee kernel: #1 0xffffffff80ab7663 at
witness_checkorder+0xe23
Jun  2 02:29:41 blubee kernel: #2 0xffffffff80a35b93 at
__mtx_lock_flags+0x93
Jun  2 02:29:41 blubee kernel: #3 0xffffffff82f4397b at
os_acquire_spinlock+0x1b
Jun  2 02:29:41 blubee kernel: #4 0xffffffff82c48b15 at _nv012002rm+0x185
Jun  2 02:29:41 blubee kernel: ACPI Warning: \_SB.PCI0.PEG0.PEGP._DSM:
Argument #4 type mismatch - Found [Buffer], ACPI requires [Package]
(20170303/nsarguments-205)
Jun  2 02:29:42 blubee kernel: nvidia-modeset: Allocated GPU:0
(GPU-54a7b304-c99d-efee-0117-0ce119063cd6) _at_ PCI:0000:01:00.0

Best,
Owen