uvm_fault(0xffffffff829c7ff0, 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 158287 32065 0 0 0 0 syz-executor.1 *351060 32184 0 0x14000 0x200 1K softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd80793bb500,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd80793bb500,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166f08,ffff800021166f14,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166f08,ffff800021166f14,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166f08,ffff800021166f14,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806eed6500) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806eed6500,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806eed6500) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167048) 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(0xffffffff829c7ff0, 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(fffffd80793bb500,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd80793bb500,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166f08,ffff800021166f14,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166f08,ffff800021166f14,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166f08,ffff800021166f14,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806eed6500) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806eed6500,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806eed6500) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167048) 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 0xffff800021166aa0 rbx 0 rdx 0 rcx 0x7 rax 0xffff800021148000 r8 0xffffffff822bc62c nd6_ns_input+0x3bc r9 0x1 r10 0xd16e23e228a37d68 r11 0x1472b3771099c610 r12 0 r13 0x3 r14 0 r15 0xffff800000c00e00 rip 0xffffffff822bee58 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021166a20 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{1}> show proc PROC (softnet) pid=351060 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000211482a0,0xffff800021148550 process=0xffff8000ffffc430 user=0xffff800021162000, vmspace=0xffffffff829c7ff0 estcpu=0, cpticks=0, pctcpu=0.1 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 32065 158287 58210 0 7 0 syz-executor.1 32065 209498 58210 0 3 0x4000080 fsleep syz-executor.1 85192 431979 86248 0 2 0 syz-executor.0 85192 78133 86248 0 3 0x4000080 fsleep syz-executor.0 85192 343452 86248 0 3 0x4000080 fsleep syz-executor.0 85192 134117 86248 0 2 0x4000000 syz-executor.0 6022 89186 0 0 3 0x14200 acct acct 86248 248603 45930 0 3 0x82 nanoslp syz-executor.0 58210 165524 45930 0 3 0x82 nanoslp syz-executor.1 42090 392603 1 0 3 0x100083 ttyin getty 2296 505310 0 0 3 0x14280 nfsidl nfsio 898 196734 0 0 3 0x14280 nfsidl nfsio 8046 266486 0 0 3 0x14280 nfsidl nfsio 10906 157029 0 0 3 0x14280 nfsidl nfsio 17671 143532 0 0 3 0x14280 nfsidl nfsio 20505 372987 0 0 3 0x14280 nfsidl nfsio 99665 466158 0 0 3 0x14280 nfsidl nfsio 92916 146117 0 0 3 0x14280 nfsidl nfsio 4692 515030 0 0 3 0x14280 nfsidl nfsio 47214 312529 0 0 3 0x14280 nfsidl nfsio 44377 72930 0 0 3 0x14280 nfsidl nfsio 82144 34792 0 0 3 0x14280 nfsidl nfsio 75309 250207 0 0 3 0x14280 nfsidl nfsio 51663 442834 0 0 3 0x14280 nfsidl nfsio 24232 216635 0 0 3 0x14280 nfsidl nfsio 66238 449775 0 0 3 0x14280 nfsidl nfsio 18807 248876 0 0 3 0x14280 nfsidl nfsio 21662 6137 0 0 3 0x14280 nfsidl nfsio 7401 460077 0 0 3 0x14280 nfsidl nfsio 11434 300465 0 0 3 0x14280 nfsidl nfsio 14895 159815 0 0 3 0x14200 bored sosplice 45930 488464 54351 0 3 0x82 thrsleep syz-fuzzer 45930 78396 54351 0 3 0x4000082 thrsleep syz-fuzzer 45930 376322 54351 0 3 0x4000082 thrsleep syz-fuzzer 45930 181803 54351 0 3 0x4000082 thrsleep syz-fuzzer 45930 188361 54351 0 3 0x4000082 thrsleep syz-fuzzer 45930 397690 54351 0 3 0x4000082 thrsleep syz-fuzzer 45930 58958 54351 0 3 0x4000082 thrsleep syz-fuzzer 45930 168042 54351 0 3 0x4000082 kqread syz-fuzzer 54351 426736 79062 0 3 0x10008a sigsusp ksh 79062 94133 34858 0 3 0x9a kqread sshd 34858 291210 1 0 3 0x88 kqread sshd 20295 375143 84102 74 3 0x100092 bpf pflogd 84102 116253 1 0 3 0x80 netio pflogd 52592 136905 68551 73 3 0x100090 kqread syslogd 68551 17643 1 0 3 0x100082 netio syslogd 21949 194069 1 0 3 0x100080 kqread resolvd 71738 517345 0 0 3 0x14200 bored smr 25369 468533 0 0 2 0x14200 zerothread 57321 15780 0 0 3 0x14200 aiodoned aiodoned 7161 71795 0 0 3 0x14200 syncer update 32645 520476 0 0 3 0x14200 cleaner cleaner 39799 10254 0 0 3 0x14200 reaper reaper 41377 8895 0 0 3 0x14200 pgdaemon pagedaemon 87187 5946 0 0 3 0x14200 bored viomb 12978 219618 0 0 3 0x40014200 acpi0 acpi0 84182 124707 0 0 3 0x40014200 idle1 *32184 351060 0 0 7 0x14200 softnet 59504 149292 0 0 3 0x14200 bored systqmp 47986 302755 0 0 3 0x14200 bored systq 82147 269595 0 0 3 0x40014200 bored softclock 8979 412339 0 0 3 0x40014200 idle0 1 187489 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 32184 (softnet) thread 0xffff800021148000 (351060) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82885178) #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 (0xffffffff828290f0) #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 10128 6442K 6873K 78643K 14163 0 pcb 14 8K 8K 78643K 607 0 rtable 123 10K 12K 78643K 1374 0 ifaddr 57 15K 16K 78643K 499 0 sysctl 3 1K 1K 78643K 5 0 counters 44 34K 34K 78643K 186 0 ioctlops 0 0K 4K 78643K 3927 0 iov 0 0K 24K 78643K 1995 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1254 79K 80K 78643K 3849 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 58 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 20 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 25K 78643K 9470 0 sigio 0 0K 0K 78643K 37 0 proc 68 63K 111K 78643K 1361 0 subproc 66 4K 4K 78643K 512 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 797 0 in_multi 22 1K 2K 78643K 1036 0 ether_multi 1 0K 0K 78643K 290 0 mrt 1 0K 0K 78643K 20 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 85 387K 387K 78643K 85 0 exec 0 0K 2K 78643K 2408 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 368 545K 547K 78643K 121370 0 UVM aobj 131 8K 8K 78643K 151 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 1633 0 NDP 7 0K 0K 78643K 143 0 temp 98 4222K 8320K 78643K 126440 0 kqueue 7 12K 26K 78643K 350 0 SYN cache 2 8K 16K 78643K 3 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 120 277 0 276 1 0 1 1 0 8 0 rtentry 112 420 0 391 2 0 2 2 0 8 0 unpcb 128 14271 0 14263 3 2 1 2 0 8 0 syncache 296 33 0 33 15 15 0 1 0 8 0 tcpqe 32 4 0 4 3 3 0 1 0 8 0 tcpcb 736 7462 0 7454 43 39 4 6 0 8 3 arp 120 48 0 42 1 0 1 1 0 8 0 inpcb 304 14499 0 14491 15 13 2 2 0 8 1 rttmr 72 9 0 9 5 5 0 1 0 8 0 nd6 48 92 0 88 1 0 1 1 0 8 0 pkpcb 40 20 0 20 7 7 0 1 0 8 0 kcovpl 48 15 0 13 1 0 1 1 0 8 0 ppxss 1248 15 0 15 8 8 0 1 0 8 0 pfstscr 40 23 0 22 7 6 1 1 0 8 0 pffrag 232 31 0 30 15 14 1 1 0 482 0 pffrnode 88 31 0 30 15 14 1 1 0 8 0 pffrent 40 835 0 834 19 18 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 94 0 82 11 10 1 2 0 8 0 pftag 88 15 0 9 1 0 1 1 0 8 0 pfqueue 264 2 0 2 1 1 0 1 0 8 0 pfstitem 24 24 0 20 1 0 1 1 0 8 0 pfstkey 112 46 0 42 1 0 1 1 0 8 0 pfstate 320 31 0 28 2 1 1 2 0 8 0 pfrule 1360 544 0 464 12 5 7 7 0 8 0 art_heap8 4096 6 0 5 4 3 1 3 0 8 0 art_heap4 256 1933 0 1813 33 20 13 14 0 8 2 art_table 32 1939 0 1818 2 0 2 2 0 8 0 art_node 16 413 0 391 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 2 1 0 1 1 0 8 0 semupl 112 7 0 7 2 2 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 148 0 20 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 13857 0 12374 94 1 93 93 0 8 0 ffsino 272 13857 0 12374 100 0 100 100 0 8 0 nchpl 144 27409 0 26960 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 80114 0 80114 7 6 1 1 0 8 1 percpumem 16 105 0 71 1 0 1 1 0 8 0 vcpupl 2048 50 0 0 7 0 7 7 0 8 0 vmpool 560 67 0 17 4 0 4 4 0 8 0 pfiaddrpl 120 35 0 19 2 1 1 1 0 8 0 scsiplug 72 3 0 3 3 3 0 1 0 8 0 scxspl 216 82464 0 82464 26 24 2 8 0 8 2 plimitpl 152 340 0 332 1 0 1 1 0 8 0 sigapl 424 9705 0 9653 7 0 7 7 0 8 0 futexpl 64 136380 0 136377 6 5 1 1 0 8 0 knotepl 112 121 0 0 2 0 2 2 0 8 0 kqueuepl 216 972 0 965 1 0 1 1 0 8 0 pipepl 336 938 0 928 11 9 2 2 0 8 0 fdescpl 496 9667 0 9651 3 0 3 3 0 8 0 filepl 152 63736 0 63601 12 6 6 7 0 8 0 lockfpl 104 1228 0 1227 1 0 1 1 0 8 0 lockfspl 48 396 0 395 1 0 1 1 0 8 0 sessionpl 144 32 0 22 1 0 1 1 0 8 0 pgrppl 48 51 0 41 1 0 1 1 0 8 0 ucredpl 96 9617 0 9608 1 0 1 1 0 8 0 zombiepl 144 9653 0 9653 1 0 1 1 0 8 1 processpl 1072 9705 0 9653 4 0 4 4 0 8 0 procpl 672 25698 0 25635 6 0 6 6 0 8 0 sosppl 168 82 0 82 24 24 0 1 0 8 0 sockpl 480 29082 0 29065 30 26 4 7 0 8 1 mcl64k 65536 25 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 33 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 26 0 0 3 0 3 3 0 8 0 mcl4k 4096 24 0 0 3 1 2 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 329 0 0 23 0 23 23 0 8 0 mtagpl 96 29 0 0 1 0 1 1 0 8 0 mbufpl 256 905 0 0 38 0 38 38 0 8 0 bufpl 280 21754 0 15425 453 0 453 453 0 8 0 anonpl 24 2723971 0 2707229 232 109 123 131 0 186 18 amapchunkpl 152 296047 0 295386 154 117 37 40 0 158 10 amappl16 200 21040 0 20468 121 90 31 41 0 8 0 amappl15 192 1681 0 1677 1 0 1 1 0 8 0 amappl14 184 1259 0 1257 1 0 1 1 0 8 0 amappl13 176 2513 0 2510 1 0 1 1 0 8 0 amappl12 168 399 0 397 1 0 1 1 0 8 0 amappl11 160 839 0 827 1 0 1 1 0 8 0 amappl10 152 26 0 21 1 0 1 1 0 8 0 amappl9 144 575 0 574 1 0 1 1 0 8 0 amappl8 136 3384 0 3299 3 0 3 3 0 8 0 amappl7 128 2731 0 2719 1 0 1 1 0 8 0 amappl6 120 435 0 419 1 0 1 1 0 8 0 amappl5 112 7309 0 7285 1 0 1 1 0 8 0 amappl4 104 2468 0 2441 1 0 1 1 0 8 0 amappl3 96 3382 0 3363 1 0 1 1 0 8 0 amappl2 88 13893 0 13851 4 2 2 2 0 8 0 amappl1 80 169076 0 168661 14 4 10 13 0 8 0 amappl 88 120615 0 120409 5 0 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 64 150 0 20 3 0 3 3 0 8 0 uaddrrnd 24 9734 0 9668 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9734 0 9668 1 0 1 1 0 8 0 vmmpekpl 168 61043 0 60999 3 0 3 3 0 8 0 vmmpepl 168 866650 0 864705 332 246 86 120 0 357 0 vmsppl 368 9733 0 9668 10 3 7 7 0 8 1 rwobjpl 56 209450 0 208081 39 18 21 23 0 8 0 pdppl 4096 19476 0 19386 143 51 92 92 0 8 2 pvpl 32 4585270 0 4564858 412 184 228 236 0 265 59 pmappl 224 9733 0 9668 5 1 4 4 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 543 0 140 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff827b6ff0) 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(ffffffff82884f70) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82884f70) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff82884f70) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82884f70) at __mp_lock+0x129 sys/kern/kern_lock.c:147 uvm_fault(fffffd805fc93750,f7d2efee000,0,1) at uvm_fault+0x192 sys/uvm/uvm_fault.c:623 upageflttrap(ffff800024492e00,f7d2efee000) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff800024492e00) at usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffffad90, count: 4 ddb{0}> trace x86_ipi_db(ffffffff827b6ff0) 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(ffffffff82884f70) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82884f70) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff82884f70) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82884f70) at __mp_lock+0x129 sys/kern/kern_lock.c:147 uvm_fault(fffffd805fc93750,f7d2efee000,0,1) at uvm_fault+0x192 sys/uvm/uvm_fault.c:623 upageflttrap(ffff800024492e00,f7d2efee000) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff800024492e00) at usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffffad90, count: -11 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(fffffd80793bb500,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd80793bb500,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166f08,ffff800021166f14,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166f08,ffff800021166f14,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166f08,ffff800021166f14,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806eed6500) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806eed6500,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806eed6500) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167048) 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(fffffd80793bb500,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd80793bb500,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166f08,ffff800021166f14,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166f08,ffff800021166f14,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166f08,ffff800021166f14,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806eed6500) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806eed6500,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806eed6500) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167048) 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