uvm_fault(0xffffffff82848758, 0x10, 0, 1) -> e kernel: page fault trap, code=0 Stopped at nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 TID PID UID PRFLAGS PFLAGS CPU COMMAND *447079 30905 0 0x14000 0x200 0 softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd80710f0f00,28,18) at nd6_ns_input+0xd74 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd80710f0f00,28,18) at nd6_ns_input+0xd74 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff8000215f60c8,ffff8000215f60d4,3a,18) at icmp6_input+0xa26 sys/netinet6/icmp6.c:686 ip_deliver(ffff8000215f60c8,ffff8000215f60d4,3a,18) at ip_deliver+0x2c2 sys/netinet/ip_input.c:658 ip6_input_if(ffff8000215f60c8,ffff8000215f60d4,29,0,ffff8000006ac000) at ip6_input_if+0x936 ipv6_input(ffff8000006ac000,fffffd80717a9800) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ac000,fffffd80717a9800,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ac000,fffffd80717a9800) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ac000,ffff8000215f6208) at if_input_process+0xd2 sys/net/if.c:843 ifiq_process(ffff8000006ac410) at ifiq_process+0x80 sys/net/ifq.c:773 taskq_thread(ffff80000002b080) at taskq_thread+0x8d sys/kern/kern_task.c:449 end trace frame: 0x0, count: 4 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.