Root mount waiting for: usbus0
uhub1: 4 ports with 4 removable, self powered
td_lock 0xc000000003e86380 tdq_lockptr 0xc000000003e83c80 td 0xc000000025f30000 newtd 0xc0000000055b0580
panic: Assertion td->td_lock == TDQ_LOCKPTR(tdq) failed at /usr/src/sys/kern/sched_ule.c:2137
cpuid = 65
time = 14
KDB: stack backtrace:
0xc0080000c9351230: at kdb_backtrace+0x64
0xc0080000c9351340: at vpanic+0x25c
0xc0080000c93513f0: at panic+0x3c
0xc0080000c9351420: at sched_switch+0xac4
0xc0080000c9351570: at 0xc0080000c93515ec
0xc0080000c93515e0: at 0xc0080000c935162c
0xc0080000c9351660: at sched_throw+0x88
0xc0080000c93516e0: at thread_exit+0x2dc
0xc0080000c9351780: at kthread_exit+0x16c
0xc0080000c9351810: at taskqueue_thread_loop+0x20c
0xc0080000c9351860: at fork_exit+0xbc
0xc0080000c93518f0: at fork_trampoline+0x18
0xc0080000c9351920: at cpu_switch+0x124
KDB: enter: panic
[ thread pid 0 tid 100806 ]
Stopped at      kdb_enter+0x78: ori     r0, r0, 0x0
db> show thread 0xc000000025f30000
Thread 100770 at 0xc000000025f30000:
 proc (pid 0): 0xc000000003df6d20
 name: metaslab_group_task
 pcb: 0xc0080000c9351ac0
 stack: 0-0xffffffffffffffff
 flags: 0x10004  pflags: 0x200000
 state: INACTIVE
 priority: 92
 container lock: sched lock 68 (0xc000000003e86380)
 last voluntary switch: 401 ms ago
db> show thread 0xc0000000055b0580
Thread 100068 at 0xc0000000055b0580:
 proc (pid 11): 0xc00000000555b000
 name: idle: cpu65
 pcb: 0xc0080000009a1ac0
 stack: 0xc008000000996000-0xc0080000009a1fff
 flags: 0x40024  pflags: 0x200000
 state: CAN RUN
 priority: 255
 container lock: sched lock 65 (0xc000000003e83c80)
 last involuntary switch: 14 ms ago
db> show lock 0xc000000003e86380
 class: spin mutex
 name: sched lock 68
 flags: {SPIN, RECURSE}
 state: {UNOWNED}
db> show lock 0xc000000003e83c80
 class: spin mutex
 name: sched lock 65
 flags: {SPIN, RECURSE}
 state: {OWNED}
 owner: 0xc000000025f45000 (tid 100806, pid 0, "zio_null_intr")
db>