login: [  66.1671762] panic: Mutex error: rw_vector_enter,312: spin lock held

[  66.1671762] lock address : 0xffff9c800d92a3c0 type     :               spin
[  66.1671762] initialized  : 0xffffffff81199249
[  66.1671762] shared holds :                  0 exclusive:                  1
[  66.1671762] shares wanted:                  0 exclusive:                  0
[  66.1671762] current cpu  :                  1 last held:                  1
[  66.1671762] current lwp  : 0xffff9c8011ae4700 last held: 0xffff9c8011ae4700
[  66.1671762] last locked* : 0xffffffff811af858 unlocked : 0xffffffff81235379
[  66.1671762] owner field  : 0x0000000000010700 wait/spin:                0/1