uvm_fault(0xffffffff82838608, 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 291676 75573 77 0x100012 0 0 dhcpleased * 71434 24777 0 0x14000 0x200 1K softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8070b4c400,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8070b4c400,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167408,ffff800021167414,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167408,ffff800021167414,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167408,ffff800021167414,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8064ce4800) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8064ce4800,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8064ce4800) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167548) at if_input_process+0xd2 sys/net/if.c:843 ifiq_process(ffff8000006ae450) at ifiq_process+0x80 sys/net/ifq.c:773 taskq_thread(ffff80000002c000) at taskq_thread+0xe6 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. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xffffffff82838608, 0x10, 0, 1) -> e ddb{1}> trace nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8070b4c400,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8070b4c400,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167408,ffff800021167414,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167408,ffff800021167414,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167408,ffff800021167414,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8064ce4800) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8064ce4800,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8064ce4800) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167548) at if_input_process+0xd2 sys/net/if.c:843 ifiq_process(ffff8000006ae450) at ifiq_process+0x80 sys/net/ifq.c:773 taskq_thread(ffff80000002c000) at taskq_thread+0xe6 sys/kern/kern_task.c:449 end trace frame: 0x0, count: -11 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800021166fa0 rbx 0 rdx 0 rcx 0x7 rax 0xffff800021148000 r8 0xffffffff81aa0c0c nd6_ns_input+0x3bc r9 0x1 r10 0x6e2fc6fd6b98333e r11 0xa87a19474b3f86e9 r12 0 r13 0x3 r14 0 r15 0xffff800000b84900 rip 0xffffffff81aa3438 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021166f20 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{1}> show proc PROC (softnet) pid=71434 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000211482a0,0xffff800021148550 process=0xffff8000ffffc428 user=0xffff800021162000, vmspace=0xffffffff82838608 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 90178 444368 52142 0 2 0 syz-executor.0 90178 384896 52142 0 2 0x4000000 syz-executor.0 61454 418819 1 0 2 0 syz-executor.1 61454 99347 1 0 2 0x4000000 syz-executor.1 52142 521622 91803 0 2 0x482 syz-executor.0 61217 429139 1 0 3 0x100083 ttyin getty 43192 268195 0 0 3 0x14280 nfsidl nfsio 21096 212125 0 0 3 0x14280 nfsidl nfsio 8259 501743 0 0 3 0x14280 nfsidl nfsio 25891 457871 0 0 3 0x14280 nfsidl nfsio 9867 127370 0 0 3 0x14280 nfsidl nfsio 8437 433963 0 0 3 0x14280 nfsidl nfsio 39225 120501 0 0 3 0x14280 nfsidl nfsio 28242 425381 0 0 3 0x14280 nfsidl nfsio 21540 389049 0 0 3 0x14280 nfsidl nfsio 12406 180334 0 0 3 0x14280 nfsidl nfsio 51522 393830 0 0 3 0x14280 nfsidl nfsio 35406 396469 0 0 3 0x14280 nfsidl nfsio 30151 55410 0 0 3 0x14280 nfsidl nfsio 86148 336596 0 0 3 0x14280 nfsidl nfsio 95304 407220 0 0 3 0x14280 nfsidl nfsio 24712 472275 0 0 3 0x14280 nfsidl nfsio 37855 315132 0 0 3 0x14280 nfsidl nfsio 43273 491711 0 0 3 0x14280 nfsidl nfsio 61117 89057 0 0 3 0x14280 nfsidl nfsio 44280 513081 0 0 3 0x14280 nfsidl nfsio 68831 51777 0 0 3 0x14200 acct acct 82478 445398 0 0 3 0x14200 bored sosplice 91803 147978 86004 0 3 0x82 thrsleep syz-fuzzer 91803 9663 86004 0 3 0x4000082 thrsleep syz-fuzzer 91803 131546 86004 0 3 0x4000082 thrsleep syz-fuzzer 91803 16687 86004 0 3 0x4000082 thrsleep syz-fuzzer 91803 28905 86004 0 3 0x4000082 thrsleep syz-fuzzer 91803 343660 86004 0 3 0x4000082 thrsleep syz-fuzzer 91803 276573 86004 0 3 0x4000082 thrsleep syz-fuzzer 91803 504949 86004 0 3 0x4000082 kqread syz-fuzzer 86004 420501 57349 0 3 0x10008a sigsusp ksh 57349 5047 69721 0 3 0x9a kqread sshd 69721 373529 1 0 3 0x88 kqread sshd 21867 367884 92434 74 3 0x100092 bpf pflogd 92434 211813 1 0 3 0x80 netio pflogd 77184 76733 68015 73 2 0x100090 syslogd 68015 297281 1 0 3 0x100082 netio syslogd 39538 442601 1 0 3 0x100080 kqread resolvd 75573 291676 30502 77 7 0x100012 dhcpleased 51410 506935 30502 77 3 0x100092 kqread dhcpleased 30502 425159 1 0 3 0x80 kqread dhcpleased 92681 63666 0 0 3 0x14200 bored smr 35910 293774 0 0 2 0x14200 zerothread 24927 25999 0 0 3 0x14200 aiodoned aiodoned 71797 112699 0 0 3 0x14200 syncer update 14949 450281 0 0 3 0x14200 cleaner cleaner 10592 11015 0 0 3 0x14200 reaper reaper 35364 112954 0 0 3 0x14200 pgdaemon pagedaemon 22562 35850 0 0 3 0x14200 bored viomb 71802 3892 0 0 3 0x40014200 acpi0 acpi0 58038 189333 0 0 3 0x40014200 idle1 *24777 71434 0 0 7 0x14200 softnet 11040 258851 0 0 2 0x14200 systqmp 10980 301391 0 0 3 0x14200 bored systq 96823 138215 0 0 3 0x40014200 bored softclock 74315 481905 0 0 3 0x40014200 idle0 1 234126 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 24777 (softnet) thread 0xffff800021148000 (71434) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829eed80) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 kpageflttrap+0x229 sys/arch/amd64/amd64/trap.c:274 #2 kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 #3 alltraps_kern_meltdown+0x7b #4 nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 #5 nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] #5 nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 #6 icmp6_input+0xabe sys/netinet6/icmp6.c:686 #7 ip_deliver+0x322 sys/netinet/ip_input.c:658 #8 ip6_input_if+0x978 #9 ipv6_input+0x48 sys/netinet6/ip6_input.c:171 #10 if_input_local+0x136 sys/net/if.c:778 #11 loinput+0x4d sys/net/if_loop.c:238 #12 if_input_process+0xd2 sys/net/if.c:843 #13 ifiq_process+0x80 sys/net/ifq.c:773 #14 taskq_thread+0xe6 sys/kern/kern_task.c:449 #15 proc_trampoline+0x1c exclusive rwlock netlock r = 0 (0xffffffff827a03f0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 if_input_process+0xa1 sys/net/if.c:843 #2 ifiq_process+0x80 sys/net/ifq.c:773 #3 taskq_thread+0xe6 sys/kern/kern_task.c:449 #4 proc_trampoline+0x1c shared rwlock softnet r = 0 (0xffff80000002c070) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 taskq_thread+0xcb sys/kern/kern_task.c:445 #2 proc_trampoline+0x1c ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10139 6454K 7093K 78643K 17977 0 pcb 14 8K 8K 78643K 479 0 rtable 147 24K 26K 78643K 2065 0 ifaddr 60 17K 20K 78643K 884 0 sysctl 2 0K 0K 78643K 2 0 counters 44 34K 34K 78643K 296 0 ioctlops 0 0K 4K 78643K 2202 0 iov 0 0K 16K 78643K 335 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1222 77K 78K 78643K 3652 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 36 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 3021 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 5805 0 sigio 0 0K 0K 78643K 234 0 proc 73 87K 99K 78643K 1414 0 subproc 26 1K 2K 78643K 435 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 469 0 in_multi 30 2K 2K 78643K 801 0 ether_multi 1 0K 0K 78643K 93 0 mrt 1 0K 0K 78643K 29 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 103 466K 466K 78643K 103 0 exec 0 0K 2K 78643K 1392 0 pfkey data 0 0K 0K 78643K 2 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 320 361K 365K 78643K 75323 0 UVM aobj 97 8K 8K 78643K 108 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 559 0 NDP 7 0K 0K 78643K 232 0 temp 99 4222K 4319K 78643K 203948 0 kqueue 12 18K 27K 78643K 440 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 319 0 316 1 0 1 1 0 8 0 rtentry 112 551 0 517 3 1 2 2 0 8 0 unpcb 128 2029 0 2014 2 1 1 2 0 8 0 syncache 296 22 0 22 9 9 0 1 0 8 0 tcpqe 32 5 0 5 3 3 0 1 0 8 0 tcpcb 736 1231 0 1227 17 15 2 2 0 8 1 arp 120 79 0 73 1 0 1 1 0 8 0 inpcb 304 5704 0 5694 24 22 2 2 0 8 1 rttmr 72 7 0 7 4 4 0 1 0 8 0 nd6 48 140 0 134 1 0 1 1 0 8 0 pkpcb 40 30 0 30 13 13 0 1 0 8 0 kcovpl 48 33 0 31 1 0 1 1 0 8 0 ppxss 1248 17 0 17 12 12 0 1 0 8 0 pfstscr 40 4 0 4 2 2 0 1 0 8 0 pffrag 232 61 0 59 13 12 1 1 0 482 0 pffrnode 88 61 0 59 13 12 1 1 0 8 0 pffrent 40 675 0 673 14 13 1 1 0 8 0 pfosfp 40 1438 0 1013 5 0 5 5 0 8 0 pfosfpen 112 1438 0 720 21 0 21 21 0 8 0 pfrktable 1344 232 0 207 9 6 3 3 0 8 0 pftag 88 14 0 12 1 0 1 1 0 8 0 pfstitem 24 16 0 14 1 0 1 1 0 8 0 pfstkey 112 26 0 24 1 0 1 1 0 8 0 pfstate 320 20 0 18 2 1 1 2 0 8 0 pfrule 1360 412 0 347 7 1 6 6 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2703 0 2549 32 20 12 13 0 8 2 art_table 32 2704 0 2549 4 2 2 2 0 8 0 art_node 16 548 0 518 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 11 1 0 1 1 0 8 0 semupl 112 544 0 544 3 3 0 1 0 8 0 semapl 112 3008 0 2998 1 0 1 1 0 8 0 shmpl 112 105 0 11 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8422 0 7003 92 2 90 90 0 8 1 ffsino 272 8422 0 7003 98 2 96 96 0 8 1 nchpl 144 15835 0 15372 62 43 19 61 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 48262 0 48262 9 8 1 1 0 8 1 percpumem 16 160 0 126 1 0 1 1 0 8 0 vcpupl 2048 35 0 0 5 0 5 5 0 8 0 vmpool 560 42 0 7 5 2 3 3 0 8 0 pfiaddrpl 120 77 0 47 1 0 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 67292 0 67290 39 38 1 8 0 8 0 plimitpl 152 414 0 405 1 0 1 1 0 8 0 sigapl 424 6018 0 5964 8 1 7 7 0 8 0 futexpl 64 74502 0 74502 9 8 1 1 0 8 1 knotepl 112 219 0 0 3 0 3 3 0 8 0 kqueuepl 216 3403 0 3381 28 26 2 2 0 8 0 pipepl 336 1071 0 1061 18 16 2 2 0 8 1 fdescpl 496 5961 0 5943 3 0 3 3 0 8 0 filepl 152 31966 0 31858 13 8 5 6 0 8 0 lockfpl 104 1226 0 1223 1 0 1 1 0 8 0 lockfspl 48 426 0 423 1 0 1 1 0 8 0 sessionpl 144 54 0 43 1 0 1 1 0 8 0 pgrppl 48 68 0 57 1 0 1 1 0 8 0 ucredpl 96 3465 0 3453 1 0 1 1 0 8 0 zombiepl 144 5964 0 5963 4 3 1 1 0 8 0 processpl 1064 6018 0 5963 4 0 4 4 0 8 0 procpl 672 16784 0 16720 8 2 6 6 0 8 0 srpgc 96 11 0 11 5 5 0 1 0 8 0 sosppl 168 54 0 54 16 15 1 1 0 8 1 sockpl 480 8106 0 8078 34 29 5 6 0 8 1 mcl64k 65536 15 0 0 2 0 2 2 0 8 0 mcl16k 16384 9 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 21 0 0 2 0 2 2 0 8 0 mcl8k 8192 28 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 336 0 0 23 2 21 23 0 8 0 mtagpl 96 54 0 0 1 0 1 1 0 8 0 mbufpl 256 1110 0 0 30 0 30 30 0 8 0 bufpl 280 18068 0 11742 454 1 453 453 0 8 0 anonpl 24 1828037 0 1809352 311 180 131 142 0 186 13 amapchunkpl 152 191956 0 191230 152 122 30 43 0 158 0 amappl16 200 15283 0 14640 157 122 35 47 0 8 1 amappl15 192 412 0 406 1 0 1 1 0 8 0 amappl14 184 139 0 139 5 4 1 1 0 8 1 amappl13 176 1108 0 1107 1 0 1 1 0 8 0 amappl12 168 1474 0 1470 1 0 1 1 0 8 0 amappl11 160 208 0 187 1 0 1 1 0 8 0 amappl10 152 1101 0 1094 1 0 1 1 0 8 0 amappl9 144 865 0 863 1 0 1 1 0 8 0 amappl8 136 1869 0 1793 3 0 3 3 0 8 0 amappl7 128 1095 0 1085 1 0 1 1 0 8 0 amappl6 120 785 0 775 1 0 1 1 0 8 0 amappl5 112 5635 0 5611 1 0 1 1 0 8 0 amappl4 104 1458 0 1423 1 0 1 1 0 8 0 amappl3 96 2581 0 2563 1 0 1 1 0 8 0 amappl2 88 7670 0 7625 3 1 2 2 0 8 0 amappl1 80 108944 0 108499 14 3 11 13 0 8 0 amappl 88 74371 0 74176 7 2 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 64 107 0 11 2 0 2 2 0 8 0 uaddrrnd 24 6003 0 5950 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6003 0 5950 1 0 1 1 0 8 0 vmmpekpl 168 46210 0 46168 3 0 3 3 0 8 0 vmmpepl 168 558749 0 556681 407 286 121 121 0 357 24 vmsppl 368 6002 0 5950 5 0 5 5 0 8 0 rwobjpl 56 137247 0 135764 53 31 22 25 0 8 0 pdppl 4096 12014 0 11935 135 54 81 83 0 8 2 pvpl 32 3290638 0 3269715 528 327 201 247 0 265 25 pmappl 224 6002 0 5950 4 0 4 4 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 488 0 122 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82826ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff829eeb78) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829eeb78) at __mp_lock+0x122 sys/kern/kern_lock.c:147 kqueue_scan(ffff8000211ca2b0,8,ffff8000211ca1b0,0,ffff8000ffff6a90,ffff8000211ca3fc) at kqueue_scan+0x1da sys/kern/kern_event.c:1274 sys_kevent(ffff8000ffff6a90,ffff8000211ca460,ffff8000211ca4c0) at sys_kevent+0x4b2 sys/kern/kern_event.c:966 syscall(ffff8000211ca530) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211ca530) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff07f0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff82826ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff829eeb78) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829eeb78) at __mp_lock+0x122 sys/kern/kern_lock.c:147 kqueue_scan(ffff8000211ca2b0,8,ffff8000211ca1b0,0,ffff8000ffff6a90,ffff8000211ca3fc) at kqueue_scan+0x1da sys/kern/kern_event.c:1274 sys_kevent(ffff8000ffff6a90,ffff8000211ca460,ffff8000211ca4c0) at sys_kevent+0x4b2 sys/kern/kern_event.c:966 syscall(ffff8000211ca530) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211ca530) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff07f0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8070b4c400,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8070b4c400,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167408,ffff800021167414,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167408,ffff800021167414,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167408,ffff800021167414,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8064ce4800) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8064ce4800,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8064ce4800) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167548) at if_input_process+0xd2 sys/net/if.c:843 ifiq_process(ffff8000006ae450) at ifiq_process+0x80 sys/net/ifq.c:773 taskq_thread(ffff80000002c000) at taskq_thread+0xe6 sys/kern/kern_task.c:449 end trace frame: 0x0, count: 4 ddb{1}> trace nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8070b4c400,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8070b4c400,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167408,ffff800021167414,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167408,ffff800021167414,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167408,ffff800021167414,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8064ce4800) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8064ce4800,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8064ce4800) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167548) at if_input_process+0xd2 sys/net/if.c:843 ifiq_process(ffff8000006ae450) at ifiq_process+0x80 sys/net/ifq.c:773 taskq_thread(ffff80000002c000) at taskq_thread+0xe6 sys/kern/kern_task.c:449 end trace frame: 0x0, count: -11