uvm_fault(0xffffffff829fcb88, 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 110136 42184 0 0x2 0 0 syz-fuzzer *161035 71644 0 0x14000 0x200 1K softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd80659be100,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd80659be100,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167ba8,ffff800021167bb4,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167ba8,ffff800021167bb4,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167ba8,ffff800021167bb4,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806225f300) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806225f300,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806225f300) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167ce8) 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(0xffffffff829fcb88, 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(fffffd80659be100,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd80659be100,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167ba8,ffff800021167bb4,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167ba8,ffff800021167bb4,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167ba8,ffff800021167bb4,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806225f300) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806225f300,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806225f300) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167ce8) 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 0xffff800021167740 rbx 0 rdx 0 rcx 0x7 rax 0xffff8000211487e0 r8 0xffffffff81188f6c nd6_ns_input+0x3bc r9 0x1 r10 0x9aa8f87e06d19eb7 r11 0x80837e228630e083 r12 0 r13 0x2 r14 0 r15 0xffff800000cf4f00 rip 0xffffffff8118b798 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000211676c0 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{1}> show proc PROC (softnet) pid=161035 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000211482a0,0xffff800021148a90 process=0xffff8000ffffcc78 user=0xffff800021162000, vmspace=0xffffffff829fcb88 estcpu=0, cpticks=0, pctcpu=0.1 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 43893 490641 6012 0 2 0 syz-executor.1 43893 520544 6012 0 2 0x4000000 syz-executor.1 6012 379494 42184 0 3 0x82 nanoslp syz-executor.1 3275 277918 42184 0 2 0x2 syz-executor.0 93775 270043 1 0 3 0x100083 ttyopn getty 6619 59789 0 0 3 0x14200 acct acct 748 86025 0 0 3 0x14200 bored sosplice 42184 110136 84263 0 7 0x2 syz-fuzzer 42184 367630 84263 0 3 0x4000082 nanoslp syz-fuzzer 42184 345374 84263 0 3 0x4000082 thrsleep syz-fuzzer 42184 394686 84263 0 3 0x4000082 thrsleep syz-fuzzer 42184 42998 84263 0 3 0x4000082 thrsleep syz-fuzzer 42184 519260 84263 0 3 0x4000082 thrsleep syz-fuzzer 42184 248902 84263 0 3 0x4000082 thrsleep syz-fuzzer 42184 353385 84263 0 3 0x4000082 nanoslp syz-fuzzer 84263 509915 51428 0 3 0x10008a sigsusp ksh 51428 116277 11903 0 3 0x9a kqread sshd 11903 141782 1 0 3 0x88 kqread sshd 29534 307307 70930 74 3 0x100092 bpf pflogd 70930 176409 1 0 3 0x80 netio pflogd 37317 101254 6990 73 3 0x100090 kqread syslogd 6990 487433 1 0 3 0x100082 netio syslogd 60283 494522 1 0 3 0x100080 kqread resolvd 89109 110738 73641 77 3 0x100092 kqread dhcpleased 28910 50290 73641 77 3 0x100092 kqread dhcpleased 73641 346844 1 0 3 0x80 kqread dhcpleased 59085 323490 0 0 3 0x14200 bored smr 93977 183634 0 0 3 0x14200 pgzero zerothread 90975 232702 0 0 3 0x14200 aiodoned aiodoned 94760 441319 0 0 3 0x14200 syncer update 21277 18258 0 0 3 0x14200 cleaner cleaner 27141 20676 0 0 3 0x14200 reaper reaper 89477 47849 0 0 3 0x14200 pgdaemon pagedaemon 39158 518850 0 0 3 0x14200 bored viomb 34516 94818 0 0 3 0x40014200 acpi0 acpi0 20063 514423 0 0 3 0x40014200 idle1 *71644 161035 0 0 7 0x14200 softnet 5744 168403 0 0 2 0x14200 systqmp 19512 412635 0 0 3 0x14200 bored systq 12407 432334 0 0 3 0x40014200 bored softclock 35456 330336 0 0 3 0x40014200 idle0 1 114192 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 71644 (softnet) thread 0xffff8000211487e0 (161035) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82983db8) #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 (0xffffffff827f2760) #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 10174 6602K 7432K 78643K 115174 0 pcb 14 20K 25K 78643K 11110 0 rtable 137 20K 21K 78643K 14092 0 ifaddr 70 24K 28K 78643K 2789 0 sysctl 3 1K 1K 78643K 5 0 counters 44 34K 34K 78643K 598 0 ioctlops 0 0K 8K 78643K 6772 0 iov 0 0K 24K 78643K 1983 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1339 84K 85K 78643K 28287 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 212 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 11 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 31450 0 sigio 0 0K 0K 78643K 231 0 proc 72 87K 112K 78643K 2921 0 subproc 26 1K 1K 78643K 814 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 5782 0 in_multi 30 2K 2K 78643K 10263 0 ether_multi 1 0K 0K 78643K 864 0 mrt 2 0K 0K 78643K 71 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 235 1049K 1049K 78643K 235 0 exec 0 0K 2K 78643K 5316 0 pfkey data 0 0K 0K 78643K 80 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 555 1248K 1251K 78643K 414149 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 5629 0 NDP 7 0K 0K 78643K 1705 0 temp 95 4216K 8312K 78643K 213009 0 kqueue 16 21K 29K 78643K 2149 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 1533 0 1530 24 23 1 3 0 8 0 rtentry 112 6127 0 6091 2 0 2 2 0 8 0 unpcb 128 14341 0 14326 143 142 1 9 0 8 0 syncache 296 20 0 20 7 7 0 1 0 8 0 tcpqe 32 5 3 5 3 3 0 1 0 8 0 tcpcb 736 21032 0 21022 408 407 1 26 0 8 0 arp 120 155 0 149 1 0 1 1 0 8 0 inpcb 304 55362 0 55351 351 345 6 14 0 8 5 rttmr 72 10 0 10 4 4 0 1 0 8 0 nd6 48 1507 0 1501 1 0 1 1 0 8 0 pkpcb 40 134 0 134 15 15 0 1 0 8 0 kcovpl 48 62 0 60 1 0 1 1 0 8 0 ppxss 1248 66 0 66 19 19 0 1 0 8 0 pfstscr 40 15 0 15 4 4 0 1 0 8 0 pffrag 232 266 0 265 22 21 1 1 0 482 0 pffrnode 88 266 0 265 22 21 1 1 0 8 0 pffrent 40 1768 0 1767 22 21 1 1 0 8 0 pfosfp 40 1440 0 1013 5 0 5 5 0 8 0 pfosfpen 112 1440 0 716 21 0 21 21 0 8 0 pfrktable 1344 101 0 84 6 4 2 2 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfqueue 264 6 0 6 2 2 0 1 0 8 0 pfstitem 24 59 0 57 1 0 1 1 0 8 0 pfstkey 112 83 0 81 2 1 1 2 0 8 0 pfstate 320 70 0 68 3 2 1 3 0 8 0 pfsrctr 152 66 0 66 4 4 0 1 0 8 0 pfrule 1360 858 0 780 8 1 7 7 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 35856 0 35697 58 48 10 20 0 8 0 art_table 32 35857 0 35697 3 1 2 3 0 8 0 art_node 16 6111 0 6079 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 4 1 0 1 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 40805 0 39351 93 2 91 92 0 8 0 ffsino 272 40805 0 39351 101 3 98 98 0 8 0 nchpl 144 79797 0 78194 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 270250 0 270250 14 13 1 1 0 8 1 percpumem 16 311 0 277 1 0 1 1 0 8 0 vcpupl 2048 328 0 0 41 0 41 41 0 8 0 vmpool 560 413 0 85 24 0 24 24 0 8 0 pfiaddrpl 120 50 0 16 2 0 2 2 0 8 0 scsiplug 72 14 0 14 6 6 0 1 0 8 0 scxspl 216 240879 0 240879 60 59 1 6 0 8 1 plimitpl 152 1856 0 1847 1 0 1 1 0 8 0 sigapl 424 31550 0 31516 8 3 5 7 0 8 0 futexpl 64 260114 0 260114 18 17 1 1 0 8 1 knotepl 112 216 0 0 4 2 2 3 0 8 0 kqueuepl 216 6402 0 6383 121 116 5 7 0 8 3 pipepl 336 4473 0 4463 147 145 2 11 0 8 0 fdescpl 496 31514 0 31496 3 0 3 3 0 8 0 filepl 152 209263 0 209153 318 308 10 15 0 8 5 lockfpl 104 8389 0 8387 9 8 1 2 0 8 0 lockfspl 48 2940 0 2938 1 0 1 1 0 8 0 sessionpl 144 87 0 76 1 0 1 1 0 8 0 pgrppl 48 172 0 161 1 0 1 1 0 8 0 ucredpl 96 18136 0 18123 1 0 1 1 0 8 0 zombiepl 144 31516 0 31516 10 9 1 1 0 8 1 processpl 1064 31550 0 31516 4 0 4 4 0 8 0 procpl 672 99096 0 99054 57 52 5 8 0 8 0 srpgc 96 17 0 17 7 7 0 1 0 8 0 sosppl 168 179 0 179 36 35 1 1 0 8 1 sockpl 480 71471 0 71442 852 840 12 34 0 8 7 mcl64k 65536 42 0 0 3 0 3 3 0 8 0 mcl16k 16384 34 0 0 4 1 3 3 0 8 0 mcl12k 12288 57 0 0 2 0 2 2 0 8 0 mcl9k 9216 26 0 0 2 0 2 2 0 8 0 mcl8k 8192 63 0 0 5 2 3 3 0 8 0 mcl4k 4096 70 0 0 3 0 3 3 0 8 0 mcl2k2 2112 25 0 0 2 0 2 2 0 8 0 mcl2k 2048 686 0 0 35 10 25 25 0 8 0 mtagpl 96 1593 0 0 13 0 13 13 0 8 0 mbufpl 256 9893 0 0 554 0 554 554 0 8 0 bufpl 280 51483 0 45157 453 0 453 453 0 8 0 anonpl 24 9130450 0 9113072 418 301 117 140 0 186 0 amapchunkpl 152 1016200 0 1015475 169 136 33 42 0 158 3 amappl16 200 78061 0 77459 323 290 33 44 0 8 1 amappl15 192 3868 0 3863 1 0 1 1 0 8 0 amappl14 184 2814 0 2813 1 0 1 1 0 8 0 amappl13 176 6091 0 6089 1 0 1 1 0 8 0 amappl12 168 4987 0 4981 1 0 1 1 0 8 0 amappl11 160 7244 0 7225 1 0 1 1 0 8 0 amappl10 152 4254 0 4249 1 0 1 1 0 8 0 amappl9 144 852 0 850 1 0 1 1 0 8 0 amappl8 136 4140 0 4032 4 0 4 4 0 8 0 amappl7 128 2815 0 2806 1 0 1 1 0 8 0 amappl6 120 916 0 899 1 0 1 1 0 8 0 amappl5 112 31151 0 31125 1 0 1 1 0 8 0 amappl4 104 13390 0 13360 1 0 1 1 0 8 0 amappl3 96 7921 0 7900 1 0 1 1 0 8 0 amappl2 88 39411 0 39334 4 2 2 2 0 8 0 amappl1 80 550123 0 549674 17 6 11 13 0 8 0 amappl 88 411101 0 410816 7 0 7 7 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 64 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 31927 0 31581 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 31927 0 31581 3 0 3 3 0 8 0 vmmpekpl 168 195002 0 194943 6 3 3 3 0 8 0 vmmpepl 168 2896556 0 2893559 990 831 159 164 0 357 21 vmsppl 368 31926 0 31581 32 0 32 32 0 8 0 rwobjpl 56 700767 0 699173 87 64 23 27 0 8 0 pdppl 4096 63862 0 63490 461 87 374 376 0 8 2 pvpl 32 15230032 0 15209537 660 477 183 246 0 265 3 pmappl 224 31926 0 31581 21 0 21 21 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 1974 0 721 38 1 37 37 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff827a8ff0) 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(ffffffff82983bb0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82983bb0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_fault(fffffd806eda2a18,c00225c000,0,2) at uvm_fault+0x224 sys/uvm/uvm_fault.c:637 upageflttrap(ffff80002120ab40,c00225c000) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002120ab40) at usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0xc000fd7648, count: 7 ddb{0}> trace x86_ipi_db(ffffffff827a8ff0) 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(ffffffff82983bb0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82983bb0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_fault(fffffd806eda2a18,c00225c000,0,2) at uvm_fault+0x224 sys/uvm/uvm_fault.c:637 upageflttrap(ffff80002120ab40,c00225c000) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002120ab40) at usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0xc000fd7648, 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(fffffd80659be100,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd80659be100,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167ba8,ffff800021167bb4,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167ba8,ffff800021167bb4,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167ba8,ffff800021167bb4,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806225f300) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806225f300,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806225f300) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167ce8) 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(fffffd80659be100,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd80659be100,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167ba8,ffff800021167bb4,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167ba8,ffff800021167bb4,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167ba8,ffff800021167bb4,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806225f300) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806225f300,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806225f300) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167ce8) 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