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 *206573 21681 0 0x14000 0x200 0K softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd806d40c300,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd806d40c300,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167c88,ffff800021167c94,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167c88,ffff800021167c94,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167c88,ffff800021167c94,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8063a3a400) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8063a3a400,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8063a3a400) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167dc8) 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(0xffffffff82838608, 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(fffffd806d40c300,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd806d40c300,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167c88,ffff800021167c94,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167c88,ffff800021167c94,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167c88,ffff800021167c94,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8063a3a400) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8063a3a400,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8063a3a400) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167dc8) 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 0xffff800021167820 rbx 0 rdx 0 rcx 0x7 rax 0xffff8000211487e0 r8 0xffffffff81aa0c0c nd6_ns_input+0x3bc r9 0x1 r10 0xa126d95e64bf94d8 r11 0x7a67d9728d330110 r12 0 r13 0x3 r14 0 r15 0xffff800000d5cb00 rip 0xffffffff81aa3438 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000211677a0 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{0}> show proc PROC (softnet) pid=206573 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021148d20,0xffff800021148010 process=0xffff8000ffffcc78 user=0xffff800021162000, vmspace=0xffffffff82838608 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 53010 353528 56397 0 2 0 syz-executor.0 53010 278287 56397 0 2 0x4000000 syz-executor.0 56397 318318 39431 0 2 0x482 syz-executor.0 1900 61630 39431 0 2 0x2 syz-executor.1 67218 316237 1 0 3 0x100083 ttyin getty 60937 129731 0 0 3 0x14280 nfsidl nfsio 35078 398097 0 0 3 0x14280 nfsidl nfsio 70347 195834 0 0 3 0x14280 nfsidl nfsio 18015 210384 0 0 3 0x14280 nfsidl nfsio 26666 293516 0 0 3 0x14280 nfsidl nfsio 23972 396299 0 0 3 0x14280 nfsidl nfsio 84015 472151 0 0 3 0x14280 nfsidl nfsio 75706 493682 0 0 3 0x14280 nfsidl nfsio 80375 48499 0 0 3 0x14280 nfsidl nfsio 89994 87789 0 0 3 0x14280 nfsidl nfsio 8557 457848 0 0 3 0x14280 nfsidl nfsio 499 417687 0 0 3 0x14280 nfsidl nfsio 92995 159829 0 0 3 0x14280 nfsidl nfsio 10728 70622 0 0 3 0x14280 nfsidl nfsio 36290 1813 0 0 3 0x14280 nfsidl nfsio 91398 145255 0 0 3 0x14280 nfsidl nfsio 17855 422827 0 0 3 0x14280 nfsidl nfsio 44669 194527 0 0 3 0x14280 nfsidl nfsio 64613 425612 0 0 3 0x14280 nfsidl nfsio 58109 414559 0 0 3 0x14280 nfsidl nfsio 2999 524043 0 0 3 0x14200 bored sosplice 39431 248500 20236 0 3 0x82 thrsleep syz-fuzzer 39431 374727 20236 0 3 0x4000082 nanoslp syz-fuzzer 39431 473452 20236 0 3 0x4000082 thrsleep syz-fuzzer 39431 136125 20236 0 3 0x4000082 thrsleep syz-fuzzer 39431 233080 20236 0 3 0x4000082 thrsleep syz-fuzzer 39431 354603 20236 0 3 0x4000082 thrsleep syz-fuzzer 39431 175789 20236 0 3 0x4000082 nanoslp syz-fuzzer 39431 63465 20236 0 3 0x4000082 kqread syz-fuzzer 20236 341241 97425 0 3 0x10008a sigsusp ksh 97425 58199 70521 0 3 0x9a kqread sshd 70521 359479 1 0 3 0x88 kqread sshd 28072 101568 1796 74 3 0x100092 bpf pflogd 1796 187189 1 0 3 0x80 netio pflogd 43122 185250 14929 73 3 0x100090 kqread syslogd 14929 175350 1 0 3 0x100082 netio syslogd 89122 121239 1 0 3 0x100080 kqread resolvd 15618 224819 0 0 3 0x14200 bored smr 97517 290545 0 0 2 0x14200 zerothread 71718 472198 0 0 3 0x14200 aiodoned aiodoned 57570 517188 0 0 3 0x14200 syncer update 81422 80815 0 0 3 0x14200 cleaner cleaner 70062 331017 0 0 3 0x14200 reaper reaper 40330 388876 0 0 3 0x14200 pgdaemon pagedaemon 27637 215172 0 0 3 0x14200 bored viomb 55956 10518 0 0 3 0x40014200 acpi0 acpi0 23582 36782 0 0 7 0x40014200 idle1 *21681 206573 0 0 7 0x14200 softnet 45311 123357 0 0 2 0x14200 systqmp 11606 460796 0 0 3 0x14200 bored systq 81686 402959 0 0 2 0x40014200 softclock 15183 142922 0 0 3 0x40014200 idle0 1 290353 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 1900 (syz-executor.1) thread 0xffff800021252d28 (61630) exclusive rrwlock inode r = 0 (0xfffffd80632aef88) #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 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1c3 sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3065 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e445918) #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 domkdirat+0x75 sys/kern/vfs_syscalls.c:3050 #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 21681 (softnet) thread 0xffff8000211487e0 (206573) 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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10136 6441K 7090K 78643K 25260 0 pcb 14 8K 8K 78643K 3436 0 rtable 174 32K 33K 78643K 8799 0 ifaddr 93 30K 31K 78643K 2289 0 sysctl 3 1K 2K 78643K 15 0 counters 44 34K 34K 78643K 634 0 ioctlops 0 0K 4K 78643K 4960 0 iov 0 0K 24K 78643K 1226 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1217 77K 77K 78643K 7161 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 165 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1430 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 19437 0 sigio 0 0K 0K 78643K 735 0 proc 68 63K 111K 78643K 2952 0 subproc 26 1K 2K 78643K 892 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2404 0 in_multi 26 1K 2K 78643K 5995 0 ether_multi 1 0K 0K 78643K 1063 0 mrt 4 0K 0K 78643K 479 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 3321 0 pfkey data 0 0K 1K 78643K 6 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 557 1500K 1500K 78643K 228633 0 UVM aobj 130 9K 9K 78643K 141 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 5128 0 NDP 7 0K 0K 78643K 954 0 temp 116 4258K 8356K 78643K 408886 0 kqueue 6 10K 36K 78643K 1272 0 SYN cache 2 8K 16K 78643K 3 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 1006 0 1005 1 0 1 1 0 8 0 rtentry 112 3261 0 3230 2 0 2 2 0 8 0 unpcb 128 8541 0 8533 14 13 1 2 0 8 0 syncache 296 59 0 59 19 19 0 1 0 8 0 tcpqe 32 453 0 453 7 7 0 1 0 8 0 tcpcb 736 7949 0 7945 85 84 1 8 0 8 0 arp 120 208 0 202 1 0 1 1 0 8 0 inpcb 304 21406 0 21399 53 52 1 2 0 8 0 rttmr 72 135 0 135 3 3 0 1 0 8 0 nd6 48 742 0 738 1 0 1 1 0 8 0 pkpcb 40 70 0 70 25 25 0 1 0 8 0 kcovpl 48 68 0 66 1 0 1 1 0 8 0 ppxss 1248 53 0 53 32 32 0 1 0 8 0 pfstscr 40 14 0 14 5 5 0 1 0 8 0 pffrag 232 85 0 84 19 18 1 1 0 482 0 pffrnode 88 85 0 84 19 18 1 1 0 8 0 pffrent 40 665 0 664 23 22 1 1 0 8 0 pfosfp 40 1436 0 1010 5 0 5 5 0 8 0 pfosfpen 112 1436 0 715 21 0 21 21 0 8 0 pfrktable 1344 422 0 382 12 8 4 4 0 8 0 pfpktdelay 88 10 0 10 1 1 0 1 0 8 0 pftag 88 28 0 21 1 0 1 1 0 8 0 pfqueue 264 20 0 8 1 0 1 1 0 8 0 pfstitem 24 3141 0 2965 6 4 2 4 0 8 0 pfstkey 112 3504 0 3328 32 26 6 17 0 8 0 pfstate 320 1783 0 1694 50 41 9 24 0 8 0 pfsrctr 152 2 0 2 1 1 0 1 0 8 0 pfrule 1360 1333 0 1115 24 5 19 19 0 8 0 art_heap8 4096 13 0 12 10 9 1 3 0 8 0 art_heap4 256 16817 0 16631 58 46 12 13 0 8 0 art_table 32 16830 0 16643 2 0 2 2 0 8 0 art_node 16 3244 0 3214 1 0 1 1 0 8 0 sysvmsgpl 40 46 0 25 1 0 1 1 0 8 0 semapl 112 1426 0 1416 1 0 1 1 0 8 0 shmpl 112 138 0 11 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 25349 0 23884 95 3 92 92 0 8 0 ffsino 272 25349 0 23884 102 3 99 99 0 8 0 nchpl 144 54639 0 54191 61 42 19 61 0 8 0 uvmvnodes 72 6174 0 0 113 0 113 113 0 8 0 vnodes 224 6174 0 0 364 0 364 364 0 8 0 namei 1024 183271 0 183270 31 30 1 2 0 8 0 percpumem 16 329 0 295 1 0 1 1 0 8 0 vcpupl 2048 161 0 1 20 0 20 20 0 8 0 vmpool 560 212 0 52 16 4 12 12 0 8 0 pfiaddrpl 120 202 0 118 5 2 3 3 0 8 0 scsiplug 72 9 0 9 8 8 0 1 0 8 0 scxspl 216 181366 0 181366 30 29 1 8 0 8 1 plimitpl 152 1426 0 1418 1 0 1 1 0 8 0 sigapl 424 19570 0 19520 15 8 7 7 0 8 0 futexpl 64 319384 0 319384 32 31 1 1 0 8 1 knotepl 112 293 0 0 3 0 3 3 0 8 0 kqueuepl 216 3003 0 2974 12 10 2 3 0 8 0 pipepl 336 2814 0 2804 41 39 2 3 0 8 0 fdescpl 496 19484 0 19469 3 0 3 3 0 8 0 filepl 152 130349 0 130258 55 51 4 7 0 8 0 lockfpl 104 4103 0 4102 1 0 1 1 0 8 0 lockfspl 48 1342 0 1341 1 0 1 1 0 8 0 sessionpl 144 94 0 84 1 0 1 1 0 8 0 pgrppl 48 145 0 135 1 0 1 1 0 8 0 ucredpl 96 13638 0 13627 1 0 1 1 0 8 0 zombiepl 144 19520 0 19520 6 5 1 1 0 8 1 processpl 1064 19570 0 19520 5 1 4 4 0 8 0 procpl 672 42540 0 42482 8 2 6 6 0 8 0 srpgc 96 22 0 22 10 10 0 1 0 8 0 sosppl 168 243 0 243 60 60 0 1 0 8 0 sockpl 480 31070 0 31054 77 74 3 7 0 8 0 mcl64k 65536 14 0 0 2 0 2 2 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 21 0 0 2 0 2 2 0 8 0 mcl9k 9216 9 0 0 1 0 1 1 0 8 0 mcl8k 8192 19 0 0 3 0 3 3 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 323 0 0 28 0 28 28 0 8 0 mtagpl 96 145 0 0 2 0 2 2 0 8 0 mbufpl 256 2112 0 0 50 0 50 50 0 8 0 bufpl 280 44534 0 38214 453 1 452 453 0 8 0 anonpl 24 5393750 0 5371404 545 400 145 166 0 186 0 amapchunkpl 152 559070 0 558308 332 301 31 44 0 158 0 amappl16 200 50769 0 49800 444 389 55 64 0 8 0 amappl15 192 4878 0 4873 1 0 1 1 0 8 0 amappl14 184 3645 0 3645 14 14 0 1 0 8 0 amappl13 176 2028 0 2027 1 0 1 1 0 8 0 amappl12 168 3380 0 3374 1 0 1 1 0 8 0 amappl11 160 2464 0 2451 1 0 1 1 0 8 0 amappl10 152 1614 0 1610 1 0 1 1 0 8 0 amappl9 144 2029 0 2027 1 0 1 1 0 8 0 amappl8 136 3353 0 3261 5 1 4 4 0 8 0 amappl7 128 1977 0 1970 1 0 1 1 0 8 0 amappl6 120 2126 0 2110 1 0 1 1 0 8 0 amappl5 112 15451 0 15428 1 0 1 1 0 8 0 amappl4 104 7027 0 6997 1 0 1 1 0 8 0 amappl3 96 5544 0 5523 1 0 1 1 0 8 0 amappl2 88 23683 0 23611 4 2 2 2 0 8 0 amappl1 80 315526 0 315127 17 7 10 13 0 8 0 amappl 88 226761 0 226479 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 64 140 0 11 3 0 3 3 0 8 0 uaddrrnd 24 19696 0 19521 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 19696 0 19521 2 0 2 2 0 8 0 vmmpekpl 168 91412 0 91362 7 4 3 3 0 8 0 vmmpepl 168 1740646 0 1737919 1185 1051 134 158 0 357 6 vmsppl 368 19695 0 19521 21 5 16 16 0 8 0 rwobjpl 56 387094 0 385225 138 110 28 30 0 8 0 pdppl 4096 39400 0 39202 315 115 200 200 0 8 2 pvpl 32 9651991 0 9631002 804 609 195 256 0 265 0 pmappl 224 19695 0 19521 13 2 11 11 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 894 0 341 17 1 16 16 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(fffffd806d40c300,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd806d40c300,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167c88,ffff800021167c94,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167c88,ffff800021167c94,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167c88,ffff800021167c94,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8063a3a400) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8063a3a400,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8063a3a400) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167dc8) 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