uvm_fault(0xffffffff829033d8, 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 283091 49658 0 0 0 0 syz-executor.1 * 28668 41163 0 0x14000 0x200 1K softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8060002600,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8060002600,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167028,ffff800021167034,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167028,ffff800021167034,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167028,ffff800021167034,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806ef73e00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806ef73e00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806ef73e00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167168) 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(0xffffffff829033d8, 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(fffffd8060002600,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8060002600,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167028,ffff800021167034,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167028,ffff800021167034,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167028,ffff800021167034,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806ef73e00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806ef73e00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806ef73e00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167168) 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 0xffff800021166bc0 rbx 0 rdx 0 rcx 0x7 rax 0xffff800021148d20 r8 0xffffffff810060fc nd6_ns_input+0x3bc r9 0x1 r10 0x16aa665d4fcc8c97 r11 0x25dccc21ce995740 r12 0 r13 0x3 r14 0 r15 0xffff800000c31500 rip 0xffffffff81008928 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021166b40 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{1}> show proc PROC (softnet) pid=28668 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021148fc0,0xffff800021148a90 process=0xffff8000ffffc000 user=0xffff800021162000, vmspace=0xffffffff829033d8 estcpu=0, cpticks=1, pctcpu=0.1 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 49658 283091 53984 0 7 0 syz-executor.1 49658 4335 53984 0 3 0x4000080 fsleep syz-executor.1 43933 419608 52619 0 3 0x80 nanoslp syz-executor.0 43933 387193 52619 0 3 0x4000080 netcon2 syz-executor.0 43933 137110 52619 0 3 0x4000080 fsleep syz-executor.0 52619 494530 89678 0 3 0x82 nanoslp syz-executor.0 53984 483434 89678 0 3 0x82 nanoslp syz-executor.1 76553 137776 0 0 3 0x14200 acct acct 45068 222782 1 0 3 0x100083 ttyin getty 39601 392796 0 0 3 0x14280 nfsidl nfsio 83136 424305 0 0 3 0x14280 nfsidl nfsio 15272 35347 0 0 3 0x14280 nfsidl nfsio 41841 205732 0 0 3 0x14280 nfsidl nfsio 40399 2148 0 0 3 0x14280 nfsidl nfsio 27877 38101 0 0 3 0x14280 nfsidl nfsio 71396 36431 0 0 3 0x14280 nfsidl nfsio 93655 117675 0 0 3 0x14280 nfsidl nfsio 95778 42891 0 0 3 0x14280 nfsidl nfsio 86158 26496 0 0 3 0x14280 nfsidl nfsio 54667 58411 0 0 3 0x14280 nfsidl nfsio 4765 176872 0 0 3 0x14280 nfsidl nfsio 77100 341928 0 0 3 0x14280 nfsidl nfsio 26990 378749 0 0 3 0x14280 nfsidl nfsio 72287 314403 0 0 3 0x14280 nfsidl nfsio 17773 352553 0 0 3 0x14280 nfsidl nfsio 89880 127105 0 0 3 0x14280 nfsidl nfsio 80765 508296 0 0 3 0x14280 nfsidl nfsio 9346 109699 0 0 3 0x14280 nfsidl nfsio 86906 300724 0 0 3 0x14280 nfsidl nfsio 27885 235063 0 0 3 0x14200 bored sosplice 89678 170321 44636 0 3 0x82 thrsleep syz-fuzzer 89678 188496 44636 0 3 0x4000082 thrsleep syz-fuzzer 89678 125163 44636 0 3 0x4000082 thrsleep syz-fuzzer 89678 246510 44636 0 3 0x4000082 thrsleep syz-fuzzer 89678 197803 44636 0 3 0x4000082 thrsleep syz-fuzzer 89678 382203 44636 0 3 0x4000082 thrsleep syz-fuzzer 89678 181966 44636 0 3 0x4000082 thrsleep syz-fuzzer 89678 120057 44636 0 3 0x4000082 kqread syz-fuzzer 44636 337867 39696 0 3 0x10008a sigsusp ksh 39696 220908 20190 0 3 0x9a kqread sshd 20190 417460 1 0 3 0x88 kqread sshd 22130 309937 33375 74 3 0x100092 bpf pflogd 33375 5106 1 0 3 0x80 netio pflogd 20173 515654 58949 73 3 0x100090 kqread syslogd 58949 292029 1 0 3 0x100082 netio syslogd 80591 109309 1 0 3 0x100080 kqread resolvd 75421 219483 0 0 3 0x14200 bored smr 40820 168405 0 0 3 0x14200 pgzero zerothread 47257 13747 0 0 3 0x14200 aiodoned aiodoned 97193 194667 0 0 3 0x14200 syncer update 63194 84418 0 0 3 0x14200 cleaner cleaner 67058 13457 0 0 3 0x14200 reaper reaper 496 287161 0 0 3 0x14200 pgdaemon pagedaemon 79272 402104 0 0 3 0x14200 bored viomb 66930 346449 0 0 3 0x40014200 acpi0 acpi0 12513 277978 0 0 3 0x40014200 idle1 *41163 28668 0 0 7 0x14200 softnet 39531 65517 0 0 3 0x14200 bored systqmp 13888 421701 0 0 3 0x14200 bored systq 6751 186239 0 0 3 0x40014200 bored softclock 1516 477464 0 0 3 0x40014200 idle0 1 420634 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 41163 (softnet) thread 0xffff800021148d20 (28668) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828be3e0) #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 (0xffffffff827ff110) #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 10134 6452K 6812K 78643K 13257 0 pcb 14 8K 8K 78643K 1439 0 rtable 147 18K 20K 78643K 3025 0 ifaddr 84 23K 24K 78643K 1143 0 sysctl 3 1K 1K 78643K 5 0 counters 44 34K 34K 78643K 348 0 ioctlops 0 0K 4K 78643K 2793 0 iov 0 0K 24K 78643K 2060 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1290 81K 82K 78643K 3816 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 214 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 12 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 25K 78643K 10537 0 sigio 0 0K 0K 78643K 88 0 proc 71 63K 111K 78643K 1661 0 subproc 66 4K 6K 78643K 1293 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1817 0 in_multi 22 1K 2K 78643K 1655 0 ether_multi 1 0K 0K 78643K 400 0 mrt 3 0K 0K 78643K 92 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 79 360K 360K 78643K 79 0 exec 0 0K 2K 78643K 1839 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 468 866K 866K 78643K 136162 0 UVM aobj 131 8K 8K 78643K 135 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 1630 0 NDP 7 0K 0K 78643K 275 0 temp 108 4242K 4868K 78643K 163519 0 kqueue 9 16K 30K 78643K 546 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 120 494 0 493 1 0 1 1 0 8 0 rtentry 112 816 0 788 2 0 2 2 0 8 0 unpcb 128 4159 0 4151 3 1 2 2 0 8 1 syncache 296 42 0 42 15 15 0 1 0 8 0 tcpqe 32 12 0 12 8 8 0 1 0 8 0 tcpcb 736 8379 0 8368 55 51 4 6 0 8 2 arp 120 112 0 106 1 0 1 1 0 8 0 inpcb 304 14214 0 14202 23 21 2 2 0 8 1 rttmr 72 19 0 19 14 13 1 1 0 8 1 nd6 48 171 0 169 1 0 1 1 0 8 0 pkpcb 40 63 0 63 19 18 1 1 0 8 1 kcovpl 48 39 0 37 1 0 1 1 0 8 0 ppxss 1248 43 0 43 21 21 0 1 0 8 0 pfstscr 40 12 0 12 4 4 0 1 0 8 0 pffrag 232 80 0 78 7 6 1 1 0 482 0 pffrnode 88 80 0 78 7 6 1 1 0 8 0 pffrent 40 1033 0 1031 7 6 1 1 0 8 0 pfosfp 40 1437 0 1011 5 0 5 5 0 8 0 pfosfpen 112 1437 0 717 21 0 21 21 0 8 0 pfrktable 1344 388 0 358 13 10 3 3 0 8 0 pftag 88 13 0 7 2 1 1 1 0 8 0 pfqueue 264 6 0 4 3 2 1 1 0 8 0 pfstitem 24 47 0 45 1 0 1 1 0 8 0 pfstkey 112 65 0 63 1 0 1 1 0 8 0 pfstate 320 57 0 55 3 2 1 2 0 8 0 pfsrctr 152 850 0 850 7 7 0 7 0 8 0 pfrule 1360 706 0 566 12 0 12 12 0 8 0 art_heap8 4096 13 0 12 9 8 1 3 0 8 0 art_heap4 256 4207 0 4116 54 42 12 17 0 8 3 art_table 32 4220 0 4128 3 1 2 3 0 8 0 art_node 16 806 0 784 1 0 1 1 0 8 0 sysvmsgpl 40 39 0 13 1 0 1 1 0 8 0 semupl 112 10 0 10 2 2 0 1 0 8 0 semapl 112 10 0 1 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 14223 0 12775 91 0 91 91 0 8 0 ffsino 272 14223 0 12775 97 0 97 97 0 8 0 nchpl 144 27635 0 26033 61 0 61 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 81334 0 81334 14 13 1 1 0 8 1 percpumem 16 186 0 152 1 0 1 1 0 8 0 vcpupl 2048 72 0 0 9 0 9 9 0 8 0 vmpool 560 101 0 29 8 2 6 6 0 8 0 pfiaddrpl 120 109 0 77 3 2 1 1 0 8 0 scsiplug 72 6 0 6 4 4 0 1 0 8 0 scxspl 216 104086 0 104086 41 38 3 8 0 8 3 plimitpl 152 697 0 689 1 0 1 1 0 8 0 sigapl 424 10715 0 10663 7 0 7 7 0 8 0 futexpl 64 129463 0 129461 17 16 1 1 0 8 0 knotepl 112 161 0 0 3 0 3 3 0 8 0 kqueuepl 216 3080 0 3067 7 6 1 2 0 8 0 pipepl 336 1182 0 1172 12 10 2 2 0 8 0 fdescpl 496 10673 0 10657 3 0 3 3 0 8 0 filepl 152 55925 0 55789 21 14 7 8 0 8 1 lockfpl 104 1880 0 1879 1 0 1 1 0 8 0 lockfspl 48 565 0 564 1 0 1 1 0 8 0 sessionpl 144 60 0 50 1 0 1 1 0 8 0 pgrppl 48 104 0 94 1 0 1 1 0 8 0 ucredpl 96 5764 0 5754 1 0 1 1 0 8 0 zombiepl 144 10663 0 10663 4 3 1 1 0 8 1 processpl 1064 10715 0 10663 4 0 4 4 0 8 0 procpl 672 29926 0 29864 7 1 6 6 0 8 0 srpgc 96 13 0 13 7 7 0 1 0 8 0 sosppl 168 115 0 115 26 26 0 1 0 8 0 sockpl 480 18954 0 18933 40 34 6 7 0 8 3 mcl64k 65536 40 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 49 0 0 2 0 2 2 0 8 0 mcl9k 9216 34 0 0 3 1 2 2 0 8 0 mcl8k 8192 34 0 0 4 0 4 4 0 8 0 mcl4k 4096 53 0 0 6 3 3 3 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 405 0 0 31 2 29 29 0 8 0 mtagpl 96 26 0 0 1 0 1 1 0 8 0 mbufpl 256 1252 0 0 38 0 38 38 0 8 0 bufpl 280 22390 0 16064 453 0 453 453 0 8 0 anonpl 24 3177302 0 3159599 394 256 138 143 0 186 28 amapchunkpl 152 341473 0 340728 205 173 32 44 0 158 3 amappl16 200 26823 0 26237 204 170 34 50 0 8 3 amappl15 192 2683 0 2677 1 0 1 1 0 8 0 amappl14 184 2513 0 2511 1 0 1 1 0 8 0 amappl13 176 1678 0 1677 1 0 1 1 0 8 0 amappl12 168 1163 0 1160 1 0 1 1 0 8 0 amappl11 160 475 0 462 1 0 1 1 0 8 0 amappl10 152 2594 0 2588 1 0 1 1 0 8 0 amappl9 144 901 0 901 3 3 0 1 0 8 0 amappl8 136 1918 0 1814 4 0 4 4 0 8 0 amappl7 128 923 0 916 1 0 1 1 0 8 0 amappl6 120 826 0 812 1 0 1 1 0 8 0 amappl5 112 11043 0 11018 1 0 1 1 0 8 0 amappl4 104 3798 0 3766 2 1 1 2 0 8 0 amappl3 96 2874 0 2858 1 0 1 1 0 8 0 amappl2 88 12724 0 12679 4 2 2 2 0 8 0 amappl1 80 194913 0 194498 13 3 10 13 0 8 0 amappl 88 134848 0 134598 6 0 6 6 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 64 134 0 4 3 0 3 3 0 8 0 uaddrrnd 24 10774 0 10686 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10774 0 10686 1 0 1 1 0 8 0 vmmpekpl 168 68867 0 68822 3 0 3 3 0 8 0 vmmpepl 168 990125 0 988101 495 377 118 121 0 357 24 vmsppl 368 10773 0 10686 10 2 8 8 0 8 0 rwobjpl 56 243228 0 241794 60 39 21 26 0 8 0 pdppl 4096 21555 0 21444 180 69 111 112 0 8 0 pvpl 32 5596995 0 5576138 673 459 214 244 0 265 38 pmappl 224 10773 0 10686 7 1 6 6 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 634 0 202 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82828ff0) 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(ffffffff828be1d8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828be1d8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_fault(fffffd80658db2f0,e3a8960a000,0,1) at uvm_fault+0x192 sys/uvm/uvm_fault.c:623 upageflttrap(ffff8000211d6db0,e3a8960a000) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff8000211d6db0) at usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff0490, count: 7 ddb{0}> trace x86_ipi_db(ffffffff82828ff0) 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(ffffffff828be1d8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828be1d8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_fault(fffffd80658db2f0,e3a8960a000,0,1) at uvm_fault+0x192 sys/uvm/uvm_fault.c:623 upageflttrap(ffff8000211d6db0,e3a8960a000) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff8000211d6db0) at usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff0490, 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(fffffd8060002600,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8060002600,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167028,ffff800021167034,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167028,ffff800021167034,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167028,ffff800021167034,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806ef73e00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806ef73e00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806ef73e00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167168) 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(fffffd8060002600,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8060002600,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167028,ffff800021167034,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167028,ffff800021167034,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167028,ffff800021167034,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806ef73e00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806ef73e00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806ef73e00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167168) 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