uvm_fault(0xffffffff828c53d8, 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 *314622 31580 0 0x14000 0x200 0 softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8060062b00,28,18) at nd6_ns_input+0xd74 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8060062b00,28,18) at nd6_ns_input+0xd74 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff8000215f5ee8,ffff8000215f5ef4,3a,18) at icmp6_input+0xa26 sys/netinet6/icmp6.c:686 ip_deliver(ffff8000215f5ee8,ffff8000215f5ef4,3a,18) at ip_deliver+0x2c2 sys/netinet/ip_input.c:658 ip6_input_if(ffff8000215f5ee8,ffff8000215f5ef4,29,0,ffff8000006ac000) at ip6_input_if+0x936 ipv6_input(ffff8000006ac000,fffffd80738bfd00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ac000,fffffd80738bfd00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ac000,fffffd80738bfd00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ac000,ffff8000215f6028) at if_input_process+0xd2 sys/net/if.c:843 ifiq_process(ffff8000006ac410) at ifiq_process+0x80 sys/net/ifq.c:773 taskq_thread(ffff80000002b080) at taskq_thread+0x8d 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xffffffff828c53d8, 0x10, 0, 1) -> e ddb> trace nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8060062b00,28,18) at nd6_ns_input+0xd74 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8060062b00,28,18) at nd6_ns_input+0xd74 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff8000215f5ee8,ffff8000215f5ef4,3a,18) at icmp6_input+0xa26 sys/netinet6/icmp6.c:686 ip_deliver(ffff8000215f5ee8,ffff8000215f5ef4,3a,18) at ip_deliver+0x2c2 sys/netinet/ip_input.c:658 ip6_input_if(ffff8000215f5ee8,ffff8000215f5ef4,29,0,ffff8000006ac000) at ip6_input_if+0x936 ipv6_input(ffff8000006ac000,fffffd80738bfd00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ac000,fffffd80738bfd00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ac000,fffffd80738bfd00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ac000,ffff8000215f6028) at if_input_process+0xd2 sys/net/if.c:843 ifiq_process(ffff8000006ac410) at ifiq_process+0x80 sys/net/ifq.c:773 taskq_thread(ffff80000002b080) at taskq_thread+0x8d sys/kern/kern_task.c:449 end trace frame: 0x0, count: -11 ddb> show registers rdi 0 rsi 0 rbp 0xffff8000215f5a70 rbx 0 rdx 0 rcx 0x7 rax 0xffff8000ffffe000 r8 0xffffffff811a8b75 nd6_ns_input+0x395 r9 0x1 r10 0x4fb896a86e6c7d39 r11 0x13cff7d297d4c4f2 r12 0 r13 0x802 r14 0 r15 0xffff800000b7b200 rip 0xffffffff811ab2c8 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000215f59f0 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb> show proc PROC (softnet) pid=314622 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffe540,0xffff8000ffffe2b0 process=0xffff8000ffffc7e0 user=0xffff8000215f1000, vmspace=0xffffffff828c53d8 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 30113 35148 95951 0 2 0 syz-executor.1 30113 206114 95951 0 2 0x4000000 syz-executor.1 16670 7869 91708 0 3 0x82 nanoslp syz-executor.0 43039 204102 0 0 3 0x14200 acct acct 95951 35024 91708 0 2 0x482 syz-executor.1 2845 126976 0 0 3 0x14280 nfsidl nfsio 36395 78921 0 0 3 0x14280 nfsidl nfsio 3874 350267 0 0 3 0x14280 nfsidl nfsio 80500 87872 0 0 3 0x14280 nfsidl nfsio 24875 72351 0 0 3 0x14280 nfsidl nfsio 54654 328321 0 0 3 0x14280 nfsidl nfsio 82690 16190 0 0 3 0x14280 nfsidl nfsio 69356 365576 0 0 3 0x14280 nfsidl nfsio 33799 166323 0 0 3 0x14280 nfsidl nfsio 79232 235068 0 0 3 0x14280 nfsidl nfsio 22893 33696 0 0 3 0x14280 nfsidl nfsio 43198 226582 0 0 3 0x14280 nfsidl nfsio 92336 41103 0 0 3 0x14280 nfsidl nfsio 40643 189950 0 0 3 0x14280 nfsidl nfsio 34117 2716 0 0 3 0x14280 nfsidl nfsio 73153 392731 0 0 3 0x14280 nfsidl nfsio 38382 170648 0 0 3 0x14280 nfsidl nfsio 88032 66319 0 0 3 0x14280 nfsidl nfsio 10150 80112 0 0 3 0x14280 nfsidl nfsio 36427 353400 0 0 3 0x14280 nfsidl nfsio 58822 141261 1 0 3 0x100083 ttyin getty 75018 146647 0 0 3 0x14200 bored sosplice 91708 385208 44587 0 3 0x82 thrsleep syz-fuzzer 91708 289686 44587 0 3 0x4000082 thrsleep syz-fuzzer 91708 371012 44587 0 3 0x4000082 thrsleep syz-fuzzer 91708 259489 44587 0 3 0x4000082 kqread syz-fuzzer 91708 402404 44587 0 3 0x4000082 thrsleep syz-fuzzer 91708 491857 44587 0 3 0x4000082 thrsleep syz-fuzzer 91708 288159 44587 0 3 0x4000082 thrsleep syz-fuzzer 44587 293806 94197 0 3 0x10008a sigsusp ksh 94197 496395 54218 0 3 0x9a kqread sshd 54218 333559 1 0 3 0x88 kqread sshd 33578 168995 92951 73 3 0x100090 kqread syslogd 92951 365299 1 0 3 0x100082 netio syslogd 39047 99248 1 0 3 0x100080 kqread resolvd 9341 473590 97324 77 3 0x100092 kqread dhcpleased 1395 135367 97324 77 3 0x100092 kqread dhcpleased 97324 318709 1 0 3 0x80 kqread dhcpleased 11610 480041 0 0 3 0x14200 bored smr 79690 209981 0 0 2 0x14200 zerothread 67932 165644 0 0 3 0x14200 aiodoned aiodoned 11989 54786 0 0 3 0x14200 syncer update 28906 59890 0 0 3 0x14200 cleaner cleaner 43140 341217 0 0 3 0x14200 reaper reaper 3415 517751 0 0 3 0x14200 pgdaemon pagedaemon 93640 416167 0 0 3 0x14200 bored viomb 14929 351473 0 0 3 0x40014200 acpi0 acpi0 *31580 314622 0 0 7 0x14200 softnet 79977 143240 0 0 2 0x14200 systqmp 87935 138016 0 0 3 0x14200 bored systq 69042 26154 0 0 3 0x40014200 bored softclock 16653 374143 0 0 3 0x40014200 idle0 1 229868 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10129 6973K 7059K 78643K 15950 0 pcb 13 8K 8K 78643K 523 0 rtable 109 18K 19K 78643K 1504 0 ifaddr 59 15K 16K 78643K 527 0 sysctl 2 0K 0K 78643K 2 0 counters 22 16K 16K 78643K 86 0 ioctlops 0 0K 4K 78643K 699 0 iov 0 0K 28K 78643K 2076 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1249 79K 79K 78643K 3488 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 47 0 VM map 2 0K 0K 78643K 2 0 sem 12 1K 1K 78643K 288 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 3986 0 sigio 0 0K 0K 78643K 46 0 proc 61 55K 71K 78643K 849 0 subproc 66 4K 4K 78643K 528 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 366 0 in_multi 20 1K 2K 78643K 534 0 ether_multi 1 0K 0K 78643K 113 0 mrt 1 0K 0K 78643K 29 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 1152 0 pfkey data 0 0K 1K 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 289 328K 344K 78643K 48229 0 UVM aobj 131 6K 6K 78643K 137 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 600 0 NDP 8 0K 0K 78643K 113 0 temp 96 4204K 6252K 78643K 72160 0 kqueue 12 18K 34K 78643K 267 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 341 0 338 1 0 1 1 0 8 0 rtentry 112 349 0 322 2 0 2 2 0 8 0 unpcb 128 3155 0 3142 3 2 1 2 0 8 0 syncache 296 22 0 22 9 9 0 1 0 8 0 tcpqe 32 42 0 42 4 4 0 1 0 8 0 tcpcb 736 1403 0 1395 26 25 1 4 0 8 0 arp 88 56 0 50 1 0 1 1 0 8 0 ipq 40 36 0 35 11 10 1 1 0 8 0 ipqe 40 556 0 555 11 10 1 1 0 8 0 inpcb 304 3669 0 3658 23 21 2 2 0 8 1 rttmr 72 7 0 7 5 5 0 1 0 8 0 ip6q 72 2 0 2 2 2 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 48 59 0 56 3 2 1 1 0 8 0 pkpcb 40 39 0 39 14 14 0 1 0 8 0 kcovpl 48 16 0 14 1 0 1 1 0 8 0 ppxss 1152 12 0 12 7 7 0 1 0 8 0 pfstscr 40 12 0 11 1 0 1 1 0 8 0 pfrktable 1344 181 0 168 6 4 2 2 0 8 0 pftag 88 43 0 39 4 3 1 1 0 8 0 pfstitem 24 12 0 10 1 0 1 1 0 8 0 pfstkey 112 16 0 14 1 0 1 1 0 8 0 pfstate 320 8 0 7 1 0 1 1 0 8 0 pfrule 1360 92 0 79 3 1 2 2 0 8 0 art_heap8 4096 10 0 8 7 4 3 3 0 8 1 art_heap4 256 1592 0 1465 34 24 10 14 0 8 1 art_table 32 1602 0 1473 2 0 2 2 0 8 0 art_node 16 345 0 320 1 0 1 1 0 8 0 sysvmsgpl 40 46 0 29 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 282 0 272 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 7112 0 5702 89 0 89 89 0 8 0 ffsino 240 7112 0 5702 84 0 84 84 0 8 0 nchpl 144 13162 0 11573 60 0 60 60 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 42297 0 42297 12 11 1 1 0 8 1 vcpupl 1984 35 0 1 5 0 5 5 0 8 0 vmpool 528 68 0 34 3 0 3 3 0 8 0 pfiaddrpl 120 66 0 56 4 3 1 1 0 8 0 scsiplug 72 4 0 4 3 3 0 1 0 8 0 scxspl 216 82295 0 82295 32 31 1 8 0 8 1 plimitpl 152 340 0 332 1 0 1 1 0 8 0 sigapl 424 4221 0 4170 7 1 6 6 0 8 0 futexpl 64 71901 0 71901 9 8 1 1 0 8 1 knotepl 112 32011 0 31968 2 0 2 2 0 8 0 kqueuepl 184 897 0 889 3 2 1 2 0 8 0 pipepl 304 627 0 617 16 14 2 2 0 8 1 fdescpl 432 4164 0 4148 3 1 2 3 0 8 0 filepl 120 27337 0 27191 20 15 5 6 0 8 0 lockfpl 104 1066 0 1063 1 0 1 1 0 8 0 lockfspl 48 385 0 382 1 0 1 1 0 8 0 sessionpl 144 32 0 22 1 0 1 1 0 8 0 pgrppl 48 52 0 42 1 0 1 1 0 8 0 ucredpl 96 3810 0 3798 1 0 1 1 0 8 0 zombiepl 144 4170 0 4169 2 1 1 1 0 8 0 processpl 1008 4221 0 4169 10 3 7 7 0 8 0 procpl 672 9009 0 8950 14 8 6 6 0 8 0 sosppl 168 64 0 64 21 20 1 1 0 8 1 sockpl 448 7221 0 7194 31 27 4 5 0 8 1 mcl64k 65536 161 0 161 22 21 1 1 0 8 1 mcl16k 16384 33 0 33 20 19 1 1 0 8 1 mcl12k 12288 121 0 121 25 24 1 1 0 8 1 mcl9k 9216 50 0 50 23 23 0 1 0 8 0 mcl8k 8192 172 0 172 18 17 1 1 0 8 1 mcl4k 4096 390 0 390 17 16 1 1 0 8 1 mcl2k2 2112 33 0 33 18 18 0 1 0 8 0 mcl2k 2048 80185 0 80139 20 13 7 14 0 8 0 mtagpl 96 311 0 311 3 3 0 1 0 8 0 mbufpl 256 153862 0 153671 126 111 15 29 0 8 0 bufpl 280 34275 0 27876 458 0 458 458 0 8 0 anonpl 24 1244443 0 1226790 258 139 119 133 0 188 0 amapchunkpl 152 125085 0 124456 181 143 38 38 0 158 12 amappl16 200 15825 0 15129 203 165 38 50 0 8 0 amappl15 192 422 0 417 1 0 1 1 0 8 0 amappl14 184 20 0 18 1 0 1 1 0 8 0 amappl13 176 905 0 904 1 0 1 1 0 8 0 amappl12 168 17 0 14 1 0 1 1 0 8 0 amappl11 160 604 0 590 1 0 1 1 0 8 0 amappl10 152 945 0 944 4 3 1 1 0 8 0 amappl9 144 1457 0 1452 1 0 1 1 0 8 0 amappl8 136 689 0 628 3 0 3 3 0 8 0 amappl7 128 105 0 99 1 0 1 1 0 8 0 amappl6 120 1342 0 1331 1 0 1 1 0 8 0 amappl5 112 4666 0 4646 1 0 1 1 0 8 0 amappl4 104 1709 0 1683 1 0 1 1 0 8 0 amappl3 96 464 0 448 1 0 1 1 0 8 0 amappl2 88 5166 0 5120 2 0 2 2 0 8 0 amappl1 80 69449 0 69038 13 4 9 12 0 8 0 amappl 88 47563 0 47390 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 64 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 4232 0 4182 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4232 0 4182 1 0 1 1 0 8 0 vmmpekpl 168 27889 0 27853 2 0 2 2 0 8 0 vmmpepl 168 382959 0 381000 338 239 99 120 0 357 6 vmsppl 272 4231 0 4182 5 1 4 4 0 8 0 rwobjpl 24 89992 0 88550 17 7 10 11 0 8 0 pdppl 4096 8470 0 8398 122 48 74 75 0 8 2 pvpl 32 2251773 0 2231397 448 267 181 237 0 265 0 pmappl 192 4231 0 4182 4 1 3 3 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 642 0 340 9 0 9 9 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8060062b00,28,18) at nd6_ns_input+0xd74 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8060062b00,28,18) at nd6_ns_input+0xd74 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff8000215f5ee8,ffff8000215f5ef4,3a,18) at icmp6_input+0xa26 sys/netinet6/icmp6.c:686 ip_deliver(ffff8000215f5ee8,ffff8000215f5ef4,3a,18) at ip_deliver+0x2c2 sys/netinet/ip_input.c:658 ip6_input_if(ffff8000215f5ee8,ffff8000215f5ef4,29,0,ffff8000006ac000) at ip6_input_if+0x936 ipv6_input(ffff8000006ac000,fffffd80738bfd00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ac000,fffffd80738bfd00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ac000,fffffd80738bfd00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ac000,ffff8000215f6028) at if_input_process+0xd2 sys/net/if.c:843 ifiq_process(ffff8000006ac410) at ifiq_process+0x80 sys/net/ifq.c:773 taskq_thread(ffff80000002b080) at taskq_thread+0x8d sys/kern/kern_task.c:449 end trace frame: 0x0, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8060062b00,28,18) at nd6_ns_input+0xd74 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8060062b00,28,18) at nd6_ns_input+0xd74 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff8000215f5ee8,ffff8000215f5ef4,3a,18) at icmp6_input+0xa26 sys/netinet6/icmp6.c:686 ip_deliver(ffff8000215f5ee8,ffff8000215f5ef4,3a,18) at ip_deliver+0x2c2 sys/netinet/ip_input.c:658 ip6_input_if(ffff8000215f5ee8,ffff8000215f5ef4,29,0,ffff8000006ac000) at ip6_input_if+0x936 ipv6_input(ffff8000006ac000,fffffd80738bfd00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ac000,fffffd80738bfd00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ac000,fffffd80738bfd00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ac000,ffff8000215f6028) at if_input_process+0xd2 sys/net/if.c:843 ifiq_process(ffff8000006ac410) at ifiq_process+0x80 sys/net/ifq.c:773 taskq_thread(ffff80000002b080) at taskq_thread+0x8d sys/kern/kern_task.c:449 end trace frame: 0x0, count: -11