panic: softclock: invalid to_clock: 4214784 Starting stack trace... panic(ffffffff8285053a) 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 pmap_extract(fffffd807eff4c98,d1b60d4e000,ffff80002a3a37f0) at pmap_extract+0x1d3 sys/arch/amd64/amd64/pmap.c:1556 uvm_fault_upper_lookup(ffff80002a3a3990,ffff80002a3a39c8,ffff80002a3a3890,ffff80002a3a3910) at uvm_fault_upper_lookup+0x139 sys/uvm/uvm_fault.c:860 uvm_fault(fffffd807e520a50,d1b60d4c000,0,1) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002a3a3b10,d1b60d4c198) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a3a3b10) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x764e0384d570, count: 247 End of stack trace.