uvm_fault(0xffffffff829aec88, 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 *235366 62619 0 0x14000 0x200 0K softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd806637e500,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd806637e500,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166fe8,ffff800021166ff4,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166fe8,ffff800021166ff4,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166fe8,ffff800021166ff4,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8070f43300) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8070f43300,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8070f43300) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167128) 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xffffffff829aec88, 0x10, 0, 1) -> e ddb{0}> trace nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd806637e500,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd806637e500,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166fe8,ffff800021166ff4,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166fe8,ffff800021166ff4,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166fe8,ffff800021166ff4,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8070f43300) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8070f43300,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8070f43300) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167128) 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{0}> show registers rdi 0 rsi 0 rbp 0xffff800021166b80 rbx 0 rdx 0 rcx 0x7 rax 0xffff800021148d20 r8 0xffffffff818f5a1c nd6_ns_input+0x3bc r9 0x1 r10 0x78dc1e9b26888689 r11 0x47bec64433841ba1 r12 0 r13 0x3 r14 0 r15 0xffff800000bc8b00 rip 0xffffffff818f8248 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021166b00 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{0}> show proc PROC (softnet) pid=235366 stat=onproc flags process=14000 proc=200 pri=32, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000211487e0,0xffff800021148fd0 process=0xffff8000ffffdd18 user=0xffff800021162000, vmspace=0xffffffff829aec88 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 1209 422981 3124 0 2 0 syz-executor.1 1209 199885 3124 0 2 0x4000000 syz-executor.1 3124 295672 67731 0 2 0x482 syz-executor.1 8404 368636 0 0 3 0x14200 acct acct 77197 171144 0 0 3 0x14280 nfsidl nfsio 66726 478768 0 0 3 0x14280 nfsidl nfsio 68907 48857 0 0 3 0x14280 nfsidl nfsio 11805 389277 0 0 3 0x14280 nfsidl nfsio 63415 453616 0 0 3 0x14280 nfsidl nfsio 28607 75415 0 0 3 0x14280 nfsidl nfsio 4290 278705 0 0 3 0x14280 nfsidl nfsio 65628 446384 0 0 3 0x14280 nfsidl nfsio 2737 491614 0 0 3 0x14280 nfsidl nfsio 27638 403329 0 0 3 0x14280 nfsidl nfsio 52411 117027 0 0 3 0x14280 nfsidl nfsio 36219 18186 0 0 3 0x14280 nfsidl nfsio 89282 242083 0 0 3 0x14280 nfsidl nfsio 55884 289428 0 0 3 0x14280 nfsidl nfsio 22039 39419 0 0 3 0x14280 nfsidl nfsio 84577 400991 0 0 3 0x14280 nfsidl nfsio 34495 450273 0 0 3 0x14280 nfsidl nfsio 60762 418027 0 0 3 0x14280 nfsidl nfsio 60166 195347 0 0 3 0x14280 nfsidl nfsio 59050 309167 0 0 3 0x14280 nfsidl nfsio 52529 166520 0 0 3 0x14200 bored sosplice 67731 145179 60685 0 3 0x82 thrsleep syz-fuzzer 67731 227431 60685 0 2 0x4000482 syz-fuzzer 67731 363970 60685 0 3 0x4000082 thrsleep syz-fuzzer 67731 180048 60685 0 3 0x4000082 kqread syz-fuzzer 67731 189341 60685 0 2 0x4000482 syz-fuzzer 67731 12204 60685 0 3 0x4000082 thrsleep syz-fuzzer 67731 368579 60685 0 3 0x4000082 thrsleep syz-fuzzer 67731 270674 60685 0 2 0x4000002 syz-fuzzer 60685 424155 65676 0 3 0x10008a sigsusp ksh 65676 123537 90960 0 3 0x9a kqread sshd 79584 465941 1 0 3 0x100083 ttyopn getty 90960 277404 1 0 3 0x88 kqread sshd 77812 115046 12962 74 3 0x100092 bpf pflogd 12962 423705 1 0 3 0x80 netio pflogd 88478 262722 57424 73 3 0x100090 kqread syslogd 57424 425555 1 0 3 0x100082 netio syslogd 25537 131035 1 0 3 0x100080 kqread resolvd 93807 293804 67530 77 3 0x100092 kqread dhcpleased 27481 297879 67530 77 3 0x100092 kqread dhcpleased 67530 260874 1 0 3 0x80 kqread dhcpleased 51621 40830 0 0 3 0x14200 bored smr 55345 248587 0 0 2 0x14200 zerothread 86588 491793 0 0 3 0x14200 aiodoned aiodoned 32066 483795 0 0 3 0x14200 syncer update 51586 496038 0 0 3 0x14200 cleaner cleaner 98940 235258 0 0 3 0x14200 reaper reaper 54357 495831 0 0 3 0x14200 pgdaemon pagedaemon 85286 407901 0 0 3 0x14200 bored viomb 76469 384327 0 0 3 0x40014200 acpi0 acpi0 86380 41692 0 0 7 0x40014200 idle1 *62619 235366 0 0 7 0x14200 softnet 92493 65081 0 0 2 0x14200 systqmp 89837 450404 0 0 3 0x14200 bored systq 73834 267440 0 0 3 0x40014200 bored softclock 4613 154338 0 0 3 0x40014200 idle0 1 33131 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 67731 (syz-fuzzer) thread 0xffff800021235500 (270674) exclusive rrwlock inode r = 0 (0xfffffd806b10a3c8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x3e2 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1eb sys/kern/vfs_subr.c:677 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x145f sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x737 sys/kern/vfs_lookup.c:561 #11 namei+0x55a sys/kern/vfs_lookup.c:245 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806f483f78) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x3e2 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xdd sys/kern/vfs_lookup.c:413 #6 namei+0x55a sys/kern/vfs_lookup.c:245 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 Process 62619 (softnet) thread 0xffff800021148d20 (235366) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82837aa8) #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 (0xffffffff82816c80) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10141 6447K 6879K 78643K 17826 0 pcb 14 14K 16K 78643K 1056 0 rtable 100 9K 12K 78643K 1311 0 ifaddr 49 13K 15K 78643K 563 0 sysctl 2 0K 0K 78643K 2 0 counters 42 33K 34K 78643K 218 0 ioctlops 0 0K 8K 78643K 3839 0 iov 0 0K 24K 78643K 3045 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1354 85K 85K 78643K 4019 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 87 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 12 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 4 9K 25K 78643K 8716 0 sigio 0 0K 0K 78643K 132 0 proc 70 87K 99K 78643K 1004 0 subproc 13 0K 2K 78643K 299 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 849 0 in_multi 23 1K 2K 78643K 725 0 ether_multi 1 0K 0K 78643K 289 0 mrt 1 0K 0K 78643K 23 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 157 705K 705K 78643K 157 0 exec 0 0K 2K 78643K 1384 0 pfkey data 0 0K 4K 78643K 14 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 339 495K 507K 78643K 112566 0 UVM aobj 131 6K 6K 78643K 143 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 759 0 NDP 6 0K 0K 78643K 152 0 temp 83 4207K 4272K 78643K 100778 0 kqueue 12 18K 28K 78643K 399 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 1858 0 1855 10 9 1 3 0 8 0 rtentry 112 347 0 322 2 0 2 2 0 8 0 unpcb 128 4573 0 4558 48 47 1 7 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 263 0 263 1 1 0 1 0 8 0 tcpcb 736 3774 0 3769 81 74 7 14 0 8 6 arp 120 56 0 52 1 0 1 1 0 8 0 inpcb 304 8539 0 8529 111 102 9 11 0 8 8 rttmr 72 3 0 3 1 1 0 1 0 8 0 nd6 48 79 0 76 1 0 1 1 0 8 0 pkpcb 40 2199 0 2199 15 14 1 1 0 8 1 kcovpl 48 23 0 22 1 0 1 1 0 8 0 ppxss 1248 28 0 28 6 6 0 1 0 8 0 pfstscr 40 87 0 87 3 2 1 1 0 8 1 pffrag 232 31 0 31 7 6 1 1 0 482 1 pffrnode 88 31 0 31 7 6 1 1 0 8 1 pffrent 40 513 0 513 7 6 1 1 0 8 1 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 145 0 133 5 3 2 2 0 8 1 pftag 88 2 0 0 1 0 1 1 0 8 0 pfqueue 264 11 0 8 1 0 1 1 0 8 0 pfstitem 24 38 0 36 1 0 1 1 0 8 0 pfstkey 112 192 0 190 1 0 1 1 0 8 0 pfstate 320 113 0 111 2 1 1 2 0 8 0 pfrule 1360 1029 0 990 4 0 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1461 0 1324 18 6 12 13 0 8 2 art_table 32 1462 0 1324 2 0 2 2 0 8 0 art_node 16 345 0 323 1 0 1 1 0 8 0 sysvmsgpl 40 70 0 30 1 0 1 1 0 8 0 semupl 112 4 0 4 2 2 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 140 0 12 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 12846 0 11421 90 0 90 90 0 8 0 ffsino 272 12846 0 11421 96 0 96 96 0 8 0 nchpl 144 25720 0 25245 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 80089 0 80089 3 2 1 1 0 8 1 percpumem 16 121 0 88 1 0 1 1 0 8 0 vcpupl 2048 30 0 0 4 0 4 4 0 8 0 vmpool 560 37 0 7 3 0 3 3 0 8 0 pfiaddrpl 120 60 0 40 2 1 1 1 0 8 0 scxspl 216 76205 0 76205 20 19 1 8 0 8 1 plimitpl 152 439 0 431 1 0 1 1 0 8 0 sigapl 424 8925 0 8872 8 1 7 7 0 8 0 futexpl 64 75007 0 75007 7 6 1 1 0 8 1 knotepl 112 97 0 0 2 0 2 2 0 8 0 kqueuepl 216 4951 0 4936 77 72 5 9 0 8 4 pipepl 336 927 0 918 32 30 2 7 0 8 1 fdescpl 496 8888 0 8871 3 0 3 3 0 8 0 filepl 152 59696 0 59603 98 88 10 14 0 8 6 lockfpl 104 7535 0 7532 10 9 1 4 0 8 0 lockfspl 48 1307 0 1304 1 0 1 1 0 8 0 sessionpl 144 36 0 26 1 0 1 1 0 8 0 pgrppl 48 58 0 48 1 0 1 1 0 8 0 ucredpl 96 5811 0 5799 1 0 1 1 0 8 0 zombiepl 144 8872 0 8872 2 1 1 1 0 8 1 processpl 1064 8925 0 8872 4 0 4 4 0 8 0 procpl 672 25310 0 25249 28 21 7 7 0 8 1 srpgc 96 16 0 16 6 5 1 1 0 8 1 sosppl 168 50 0 50 9 9 0 1 0 8 0 sockpl 480 17176 0 17148 338 326 12 28 0 8 8 mcl64k 65536 27 0 0 4 1 3 3 0 8 0 mcl16k 16384 11 0 0 2 0 2 2 0 8 0 mcl12k 12288 25 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 4 1 3 3 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 14 0 0 1 0 1 1 0 8 0 mcl2k 2048 220 0 0 22 2 20 22 0 8 0 mtagpl 96 388 0 0 6 1 5 6 0 8 0 mbufpl 256 940 0 0 51 0 51 51 0 8 0 bufpl 280 17100 0 10774 453 0 453 453 0 8 0 anonpl 24 2537165 0 2522508 226 108 118 133 0 186 7 amapchunkpl 152 290605 0 289953 114 73 41 43 0 158 12 amappl16 200 23164 0 22575 114 74 40 44 0 8 8 amappl15 192 2289 0 2283 1 0 1 1 0 8 0 amappl14 184 2754 0 2753 1 0 1 1 0 8 0 amappl13 176 664 0 661 1 0 1 1 0 8 0 amappl12 168 745 0 743 1 0 1 1 0 8 0 amappl11 160 1286 0 1268 1 0 1 1 0 8 0 amappl10 152 580 0 577 1 0 1 1 0 8 0 amappl9 144 1251 0 1249 1 0 1 1 0 8 0 amappl8 136 1629 0 1566 3 0 3 3 0 8 0 amappl7 128 1024 0 1016 1 0 1 1 0 8 0 amappl6 120 1135 0 1124 1 0 1 1 0 8 0 amappl5 112 7006 0 6985 1 0 1 1 0 8 0 amappl4 104 4457 0 4425 1 0 1 1 0 8 0 amappl3 96 1551 0 1533 1 0 1 1 0 8 0 amappl2 88 10108 0 10060 4 2 2 2 0 8 0 amappl1 80 158668 0 158227 14 4 10 13 0 8 0 amappl 88 111578 0 111370 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 64 142 0 12 3 0 3 3 0 8 0 uaddrrnd 24 8925 0 8878 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8925 0 8878 1 0 1 1 0 8 0 vmmpekpl 168 62728 0 62695 2 0 2 2 0 8 0 vmmpepl 168 813761 0 811855 282 166 116 118 0 357 26 vmsppl 368 8924 0 8878 5 0 5 5 0 8 0 rwobjpl 56 198275 0 196858 41 16 25 25 0 8 4 pdppl 4096 17858 0 17786 100 24 76 76 0 8 4 pvpl 32 4317905 0 4300298 418 231 187 239 0 265 10 pmappl 224 8924 0 8878 3 0 3 3 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 526 0 142 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd806637e500,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd806637e500,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166fe8,ffff800021166ff4,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166fe8,ffff800021166ff4,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166fe8,ffff800021166ff4,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8070f43300) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8070f43300,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8070f43300) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167128) 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{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d38ff0) 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 acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020d38ff0) 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 acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5