uvm_fault(0xffffffff8291d370, 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 *179548 96998 0 0x14000 0x200 0 softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd807356b800,28,18) at nd6_ns_input+0xd74 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd807356b800,28,18) at nd6_ns_input+0xd74 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff8000215f6008,ffff8000215f6014,3a,18) at icmp6_input+0xa26 sys/netinet6/icmp6.c:686 ip_deliver(ffff8000215f6008,ffff8000215f6014,3a,18) at ip_deliver+0x2c2 sys/netinet/ip_input.c:658 ip6_input_if(ffff8000215f6008,ffff8000215f6014,29,0,ffff8000006ac000) at ip6_input_if+0x936 ipv6_input(ffff8000006ac000,fffffd807356b000) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ac000,fffffd807356b000,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ac000,fffffd807356b000) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ac000,ffff8000215f6148) 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(0xffffffff8291d370, 0x10, 0, 1) -> e ddb> trace nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd807356b800,28,18) at nd6_ns_input+0xd74 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd807356b800,28,18) at nd6_ns_input+0xd74 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff8000215f6008,ffff8000215f6014,3a,18) at icmp6_input+0xa26 sys/netinet6/icmp6.c:686 ip_deliver(ffff8000215f6008,ffff8000215f6014,3a,18) at ip_deliver+0x2c2 sys/netinet/ip_input.c:658 ip6_input_if(ffff8000215f6008,ffff8000215f6014,29,0,ffff8000006ac000) at ip6_input_if+0x936 ipv6_input(ffff8000006ac000,fffffd807356b000) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ac000,fffffd807356b000,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ac000,fffffd807356b000) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ac000,ffff8000215f6148) 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 0xffff8000215f5b90 rbx 0 rdx 0 rcx 0x7 rax 0xffff8000ffffed20 r8 0xffffffff81ecac35 nd6_ns_input+0x395 r9 0x1 r10 0x594e51abfc43bde9 r11 0x75e52de1dc74754a r12 0 r13 0x802 r14 0 r15 0xffff800000cece00 rip 0xffffffff81ecd388 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000215f5b10 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb> show proc PROC (softnet) pid=179548 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffefc0,0xffff8000ffffea90 process=0xffff8000ffffd3b0 user=0xffff8000215f1000, vmspace=0xffffffff8291d370 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 70099 303316 88531 0 2 0 syz-executor.1 70099 407836 88531 0 2 0x4000000 syz-executor.1 35255 440020 51467 0 2 0x2 syz-executor.0 88531 56508 51467 0 3 0x82 nanoslp syz-executor.1 19502 14276 1 0 3 0x100083 ttyin getty 38820 344925 0 0 3 0x14200 acct acct 69367 334042 0 0 3 0x14280 nfsidl nfsio 55724 190500 0 0 3 0x14280 nfsidl nfsio 1065 228601 0 0 3 0x14280 nfsidl nfsio 84868 419821 0 0 3 0x14280 nfsidl nfsio 45122 388133 0 0 3 0x14280 nfsidl nfsio 87195 202135 0 0 3 0x14280 nfsidl nfsio 29360 521100 0 0 3 0x14280 nfsidl nfsio 10049 120103 0 0 3 0x14280 nfsidl nfsio 13394 446548 0 0 3 0x14280 nfsidl nfsio 89452 505085 0 0 3 0x14280 nfsidl nfsio 88755 516987 0 0 3 0x14280 nfsidl nfsio 44395 378694 0 0 3 0x14280 nfsidl nfsio 29653 161955 0 0 3 0x14280 nfsidl nfsio 74301 98330 0 0 3 0x14280 nfsidl nfsio 92018 287431 0 0 3 0x14280 nfsidl nfsio 37618 220683 0 0 3 0x14280 nfsidl nfsio 58764 467694 0 0 3 0x14280 nfsidl nfsio 6939 146324 0 0 3 0x14280 nfsidl nfsio 57658 378122 0 0 3 0x14280 nfsidl nfsio 42154 424890 0 0 3 0x14280 nfsidl nfsio 67745 72451 0 0 3 0x14200 bored sosplice 51467 371736 13900 0 3 0x82 kqread syz-fuzzer 51467 242210 13900 0 2 0x4000002 syz-fuzzer 51467 139923 13900 0 3 0x4000082 thrsleep syz-fuzzer 51467 291400 13900 0 3 0x4000082 thrsleep syz-fuzzer 51467 186775 13900 0 3 0x4000082 thrsleep syz-fuzzer 51467 175351 13900 0 3 0x4000082 thrsleep syz-fuzzer 51467 57443 13900 0 3 0x4000082 thrsleep syz-fuzzer 13900 61267 94797 0 3 0x10008a sigsusp ksh 94797 420371 94282 0 3 0x9a kqread sshd 94282 361930 1 0 3 0x88 kqread sshd 77513 709 8122 73 3 0x100090 kqread syslogd 8122 382260 1 0 3 0x100082 netio syslogd 46854 465704 1 0 3 0x100080 kqread resolvd 14929 39500 47909 77 3 0x100092 kqread dhcpleased 20451 329148 47909 77 3 0x100092 kqread dhcpleased 47909 512254 1 0 3 0x80 kqread dhcpleased 61165 227984 0 0 3 0x14200 bored smr 35063 441405 0 0 2 0x14200 zerothread 28752 43594 0 0 3 0x14200 aiodoned aiodoned 28993 334010 0 0 3 0x14200 syncer update 67037 467212 0 0 3 0x14200 cleaner cleaner 15276 472722 0 0 3 0x14200 reaper reaper 4538 26186 0 0 3 0x14200 pgdaemon pagedaemon 14444 331803 0 0 3 0x14200 bored viomb 75431 458802 0 0 3 0x40014200 acpi0 acpi0 *96998 179548 0 0 7 0x14200 softnet 90701 21512 0 0 2 0x14200 systqmp 12094 433700 0 0 3 0x14200 bored systq 79608 274643 0 0 2 0x40014200 softclock 84858 118697 0 0 3 0x40014200 idle0 1 330354 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 10118 6961K 7929K 78643K 26184 0 pcb 13 8K 8K 78643K 2624 0 rtable 140 30K 32K 78643K 3594 0 ifaddr 81 27K 30K 78643K 2035 0 sysctl 3 1K 1K 78643K 146 0 counters 21 16K 17K 78643K 378 0 ioctlops 0 0K 4K 78643K 2812 0 iov 0 0K 32K 78643K 888 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1280 80K 81K 78643K 6214 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 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 800 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 11524 0 sigio 0 0K 0K 78643K 92 0 proc 62 55K 63K 78643K 1174 0 subproc 66 4K 6K 78643K 891 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 305 0 in_multi 15 1K 2K 78643K 623 0 ether_multi 1 0K 0K 78643K 99 0 mrt 4 0K 0K 78643K 32 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 79 360K 360K 78643K 79 0 exec 0 0K 2K 78643K 1406 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 330 372K 372K 78643K 134957 0 UVM aobj 131 9K 9K 78643K 150 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 2267 0 NDP 7 0K 0K 78643K 428 0 temp 94 4206K 6253K 78643K 174667 0 kqueue 14 22K 34K 78643K 299 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 120 248 0 245 1 0 1 1 0 8 0 rtentry 112 1206 0 1189 2 0 2 2 0 8 0 unpcb 128 2383 0 2370 1 0 1 1 0 8 0 syncache 296 37 0 37 15 15 0 1 0 8 0 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 736 8386 0 8382 74 71 3 10 0 8 2 arp 88 84 0 80 1 0 1 1 0 8 0 ipq 40 32 0 32 11 10 1 1 0 8 1 ipqe 40 609 0 609 11 10 1 1 0 8 1 inpcb 304 18711 0 18701 32 30 2 2 0 8 1 rttmr 72 10 0 10 7 7 0 1 0 8 0 nd6 48 97 0 95 1 0 1 1 0 8 0 pkpcb 40 39 0 39 15 15 0 1 0 8 0 kcovpl 48 27 0 25 1 0 1 1 0 8 0 ppxss 1152 33 0 33 19 19 0 1 0 8 0 pfstscr 40 40 0 40 11 10 1 1 0 8 1 pfosfp 40 10 0 8 1 0 1 1 0 8 0 pfosfpen 112 10 0 7 1 0 1 1 0 8 0 pfrktable 1344 373 0 335 6 2 4 4 0 8 0 pftag 88 31 0 15 1 0 1 1 0 8 0 pfqueue 264 6 0 2 1 0 1 1 0 8 0 pfstitem 24 22 0 22 8 8 0 1 0 8 0 pfstkey 112 58 0 58 11 10 1 1 0 8 1 pfstate 320 31 0 31 11 10 1 1 0 8 1 pfrule 1360 1995 0 1132 74 2 72 73 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2155 0 2049 24 13 11 14 0 8 0 art_table 32 2156 0 2049 2 0 2 2 0 8 0 art_node 16 1014 0 996 1 0 1 1 0 8 0 sysvmsgpl 40 56 0 16 1 0 1 1 0 8 0 semapl 112 798 0 788 1 0 1 1 0 8 0 shmpl 112 147 0 19 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 14472 0 13063 89 0 89 89 0 8 0 ffsino 240 14472 0 13063 84 0 84 84 0 8 0 nchpl 144 28586 0 26994 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 79986 0 79986 15 14 1 1 0 8 1 vcpupl 1984 37 0 0 5 0 5 5 0 8 0 vmpool 528 52 0 15 3 0 3 3 0 8 0 pfiaddrpl 120 355 0 124 9 2 7 8 0 8 0 scsiplug 72 10 0 10 6 6 0 1 0 8 0 scxspl 216 110448 0 110448 36 35 1 8 0 8 1 plimitpl 152 323 0 315 1 0 1 1 0 8 0 sigapl 424 11705 0 11654 7 1 6 7 0 8 0 futexpl 64 172715 0 172715 14 13 1 1 0 8 1 knotepl 112 85132 0 85089 2 0 2 2 0 8 0 kqueuepl 184 3194 0 3182 2 1 1 2 0 8 0 pipepl 304 1396 0 1386 19 18 1 2 0 8 0 fdescpl 432 11670 0 11654 6 4 2 3 0 8 0 filepl 120 58973 0 58829 12 6 6 6 0 8 0 lockfpl 104 1341 0 1339 1 0 1 1 0 8 0 lockfspl 48 478 0 476 1 0 1 1 0 8 0 sessionpl 144 44 0 34 1 0 1 1 0 8 0 pgrppl 48 59 0 49 1 0 1 1 0 8 0 ucredpl 96 3503 0 3493 1 0 1 1 0 8 0 zombiepl 144 11654 0 11654 4 3 1 1 0 8 1 processpl 1008 11705 0 11654 8 1 7 7 0 8 0 procpl 672 24131 0 24073 9 3 6 6 0 8 0 sosppl 168 172 0 172 26 26 0 1 0 8 0 sockpl 448 21461 0 21435 30 26 4 5 0 8 1 mcl64k 65536 335 0 335 48 47 1 1 0 8 1 mcl16k 16384 42 0 42 21 21 0 1 0 8 0 mcl12k 12288 233 0 233 38 38 0 1 0 8 0 mcl9k 9216 112 0 112 38 38 0 1 0 8 0 mcl8k 8192 278 0 278 39 39 0 1 0 8 0 mcl4k 4096 959 0 958 31 30 1 1 0 8 0 mcl2k2 2112 42 0 42 24 24 0 1 0 8 0 mcl2k 2048 88184 0 88131 31 23 8 12 0 8 0 mtagpl 96 1407 0 1160 25 13 12 13 0 8 0 mbufpl 256 209193 0 208472 190 116 74 78 0 8 0 bufpl 280 21841 0 15442 458 0 458 458 0 8 0 anonpl 24 3042462 0 3024798 318 202 116 138 0 188 0 amapchunkpl 152 323584 0 322991 143 118 25 37 0 158 2 amappl16 200 27458 0 26744 195 157 38 51 0 8 0 amappl15 192 4089 0 4083 1 0 1 1 0 8 0 amappl14 184 3 0 1 1 0 1 1 0 8 0 amappl13 176 909 0 908 1 0 1 1 0 8 0 amappl12 168 14 0 12 1 0 1 1 0 8 0 amappl11 160 524 0 510 1 0 1 1 0 8 0 amappl10 152 5788 0 5784 1 0 1 1 0 8 0 amappl9 144 496 0 494 1 0 1 1 0 8 0 amappl8 136 978 0 896 3 0 3 3 0 8 0 amappl7 128 197 0 189 1 0 1 1 0 8 0 amappl6 120 419 0 411 1 0 1 1 0 8 0 amappl5 112 17115 0 17094 1 0 1 1 0 8 0 amappl4 104 1692 0 1664 1 0 1 1 0 8 0 amappl3 96 667 0 652 1 0 1 1 0 8 0 amappl2 88 12624 0 12574 2 0 2 2 0 8 0 amappl1 80 185082 0 184670 13 3 10 12 0 8 0 amappl 88 134094 0 133918 6 1 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 64 149 0 19 3 0 3 3 0 8 0 uaddrrnd 24 11722 0 11669 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 11722 0 11669 1 0 1 1 0 8 0 vmmpekpl 168 60082 0 60052 2 0 2 2 0 8 0 vmmpepl 168 1010876 0 1008883 458 365 93 130 0 357 0 vmsppl 272 11721 0 11669 8 4 4 4 0 8 0 rwobjpl 24 223599 0 222109 18 8 10 11 0 8 0 pdppl 4096 23450 0 23375 140 63 77 79 0 8 2 pvpl 32 5338465 0 5317390 538 357 181 243 0 265 0 pmappl 192 11721 0 11669 3 0 3 3 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 905 0 471 13 0 13 13 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(fffffd807356b800,28,18) at nd6_ns_input+0xd74 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd807356b800,28,18) at nd6_ns_input+0xd74 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff8000215f6008,ffff8000215f6014,3a,18) at icmp6_input+0xa26 sys/netinet6/icmp6.c:686 ip_deliver(ffff8000215f6008,ffff8000215f6014,3a,18) at ip_deliver+0x2c2 sys/netinet/ip_input.c:658 ip6_input_if(ffff8000215f6008,ffff8000215f6014,29,0,ffff8000006ac000) at ip6_input_if+0x936 ipv6_input(ffff8000006ac000,fffffd807356b000) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ac000,fffffd807356b000,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ac000,fffffd807356b000) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ac000,ffff8000215f6148) 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(fffffd807356b800,28,18) at nd6_ns_input+0xd74 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd807356b800,28,18) at nd6_ns_input+0xd74 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff8000215f6008,ffff8000215f6014,3a,18) at icmp6_input+0xa26 sys/netinet6/icmp6.c:686 ip_deliver(ffff8000215f6008,ffff8000215f6014,3a,18) at ip_deliver+0x2c2 sys/netinet/ip_input.c:658 ip6_input_if(ffff8000215f6008,ffff8000215f6014,29,0,ffff8000006ac000) at ip6_input_if+0x936 ipv6_input(ffff8000006ac000,fffffd807356b000) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ac000,fffffd807356b000,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ac000,fffffd807356b000) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ac000,ffff8000215f6148) 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