panic: softclock: invalid to_clock: 1441065168 Starting stack trace... panic(ffffffff828592bf) at panic+0x16f sys/kern/subr_prf.c:229 softclock(0) at softclock+0x22d sys/kern/kern_timeout.c:759 softintr_dispatch(0) at softintr_dispatch+0xcd sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1a kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1a sys/dev/kcov.c:158 __mp_lock(ffffffff82e384d8) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82e384d8) at __mp_lock+0x133 sys/kern/kern_lock.c:147 syscall(ffff80003717d740) at syscall+0x83b mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80003717d740) at syscall+0x83b sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd2bd2440a90, count: 249 End of stack trace.