uvm_fault(0xffffffff8287e280, 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 *112216 21943 0 0x14000 0x200 0K softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8075664900,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8075664900,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166f38,ffff800021166f44,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166f38,ffff800021166f44,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166f38,ffff800021166f44,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8066f65900) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8066f65900,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8066f65900) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167078) 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(0xffffffff8287e280, 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(fffffd8075664900,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8075664900,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166f38,ffff800021166f44,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166f38,ffff800021166f44,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166f38,ffff800021166f44,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8066f65900) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8066f65900,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8066f65900) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167078) 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 0xffff800021166ad0 rbx 0 rdx 0 rcx 0x7 rax 0xffff800021148000 r8 0xffffffff81820e8c nd6_ns_input+0x3bc r9 0x1 r10 0x5423e7befc8ee8e0 r11 0xd51aebeeed3ce708 r12 0 r13 0x2 r14 0 r15 0xffff800000c7db00 rip 0xffffffff818236b8 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021166a50 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{0}> show proc PROC (softnet) pid=112216 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000211487e0,0xffff8000211482b0 process=0xffff8000ffffd4f0 user=0xffff800021162000, vmspace=0xffffffff8287e280 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 92498 84765 92356 0 2 0 syz-executor.0 92498 97883 92356 0 2 0x4000000 syz-executor.0 83618 518768 93856 0 3 0x82 nanoslp syz-executor.1 92356 523426 93856 0 3 0x82 nanoslp syz-executor.0 3559 303109 0 0 3 0x14280 nfsidl nfsio 28331 466600 0 0 3 0x14280 nfsidl nfsio 11562 181872 0 0 3 0x14280 nfsidl nfsio 72880 67003 0 0 3 0x14280 nfsidl nfsio 44758 137332 0 0 3 0x14280 nfsidl nfsio 48146 496358 0 0 3 0x14280 nfsidl nfsio 71580 70044 0 0 3 0x14280 nfsidl nfsio 59359 359061 0 0 3 0x14280 nfsidl nfsio 53636 408000 0 0 3 0x14280 nfsidl nfsio 85495 261787 0 0 3 0x14280 nfsidl nfsio 81836 183322 0 0 3 0x14280 nfsidl nfsio 95495 148035 0 0 3 0x14280 nfsidl nfsio 18621 238059 0 0 3 0x14280 nfsidl nfsio 41967 392824 0 0 3 0x14280 nfsidl nfsio 86475 97028 0 0 3 0x14280 nfsidl nfsio 5064 257164 0 0 3 0x14280 nfsidl nfsio 23450 349852 0 0 3 0x14280 nfsidl nfsio 30461 431055 0 0 3 0x14280 nfsidl nfsio 90646 72389 0 0 3 0x14280 nfsidl nfsio 94043 482410 0 0 3 0x14280 nfsidl nfsio 41691 155932 1 0 3 0x100083 ttyopn getty 2815 2503 0 0 3 0x14200 bored sosplice 93856 53084 56175 0 3 0x82 thrsleep syz-fuzzer 93856 515518 56175 0 2 0x4000482 syz-fuzzer 93856 382751 56175 0 3 0x4000082 thrsleep syz-fuzzer 93856 276584 56175 0 3 0x4000082 thrsleep syz-fuzzer 93856 413813 56175 0 3 0x4000082 thrsleep syz-fuzzer 93856 182536 56175 0 3 0x4000082 thrsleep syz-fuzzer 93856 118779 56175 0 3 0x4000082 thrsleep syz-fuzzer 93856 255033 56175 0 3 0x4000082 kqread syz-fuzzer 56175 136673 62805 0 3 0x10008a sigsusp ksh 62805 59525 58599 0 3 0x9a kqread sshd 58599 421905 1 0 3 0x88 kqread sshd 80915 71084 14569 74 3 0x100092 bpf pflogd 14569 499158 1 0 3 0x80 netio pflogd 59688 167128 50414 73 3 0x100090 kqread syslogd 50414 502968 1 0 3 0x100082 netio syslogd 66526 387859 1 0 3 0x100080 kqread resolvd 18807 302116 80965 77 3 0x100092 kqread dhcpleased 33708 274345 80965 77 3 0x100092 kqread dhcpleased 80965 403392 1 0 3 0x80 kqread dhcpleased 79373 221461 0 0 3 0x14200 bored smr 88216 194701 0 0 2 0x14200 zerothread 31477 392864 0 0 3 0x14200 aiodoned aiodoned 55203 355113 0 0 3 0x14200 syncer update 75315 187879 0 0 3 0x14200 cleaner cleaner 85738 238371 0 0 3 0x14200 reaper reaper 83133 259075 0 0 3 0x14200 pgdaemon pagedaemon 70183 523627 0 0 3 0x14200 bored viomb 6977 328176 0 0 3 0x40014200 acpi0 acpi0 21291 108231 0 0 7 0x40014200 idle1 *21943 112216 0 0 7 0x14200 softnet 72009 463489 0 0 2 0x14200 systqmp 68940 503367 0 0 3 0x14200 bored systq 60122 251261 0 0 3 0x40014200 bored softclock 21197 168226 0 0 3 0x40014200 idle0 1 423525 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 21943 (softnet) thread 0xffff800021148000 (112216) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82862d30) #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 (0xffffffff82804eb0) #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 10146 6461K 7075K 78643K 22609 0 pcb 15 8K 8K 78643K 944 0 rtable 101 7K 7K 78643K 2148 0 ifaddr 49 15K 16K 78643K 919 0 sysctl 2 0K 0K 78643K 6 0 counters 44 34K 34K 78643K 366 0 ioctlops 0 0K 4K 78643K 3632 0 iov 0 0K 24K 78643K 633 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1275 80K 80K 78643K 6020 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 81 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 917 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 8654 0 sigio 0 0K 0K 78643K 47 0 proc 89 88K 112K 78643K 1554 0 subproc 66 4K 6K 78643K 1093 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 671 0 in_multi 26 1K 2K 78643K 1056 0 ether_multi 1 0K 0K 78643K 158 0 mrt 3 0K 0K 78643K 47 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 115 519K 519K 78643K 115 0 exec 0 0K 2K 78643K 1831 0 pfkey data 0 0K 1K 78643K 10 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 411 706K 707K 78643K 106385 0 UVM aobj 131 8K 8K 78643K 153 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 989 0 NDP 7 0K 0K 78643K 277 0 temp 87 4198K 8294K 78643K 127531 0 kqueue 13 20K 38K 78643K 593 0 SYN cache 2 388K 396K 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 120 575 0 572 1 0 1 1 0 8 0 rtentry 112 735 0 704 2 0 2 2 0 8 0 unpcb 128 3707 0 3692 1 0 1 1 0 8 0 syncache 296 16 0 16 7 7 0 1 0 8 0 tcpqe 32 177 0 177 2 2 0 1 0 8 0 tcpcb 736 2362 0 2354 65 64 1 3 0 8 0 arp 120 108 0 102 1 0 1 1 0 8 0 inpcb 304 7955 0 7940 127 125 2 3 0 8 0 rttmr 72 13 0 13 3 3 0 1 0 8 0 nd6 48 173 0 168 8 7 1 1 0 8 0 pkpcb 40 50 0 50 19 19 0 1 0 8 0 kcovpl 48 33 0 31 1 0 1 1 0 8 0 ppxss 1248 21 0 21 18 18 0 1 0 8 0 pffrag 232 75 0 75 32 32 0 1 0 482 0 pffrnode 88 75 0 75 32 32 0 1 0 8 0 pffrent 40 1341 0 1341 36 36 0 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 17 0 10 2 1 1 1 0 8 0 pftag 88 6 0 4 1 0 1 1 0 8 0 pfstitem 24 23 0 21 1 0 1 1 0 8 0 pfstkey 112 23 0 21 1 0 1 1 0 8 0 pfstate 320 23 0 21 2 1 1 2 0 8 0 pfrule 1360 116 0 100 3 1 2 2 0 8 0 art_heap8 4096 9 0 8 7 6 1 3 0 8 0 art_heap4 256 3646 0 3496 53 42 11 13 0 8 0 art_table 32 3655 0 3504 2 0 2 2 0 8 0 art_node 16 729 0 700 1 0 1 1 0 8 0 sysvmsgpl 40 38 0 19 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 913 0 903 1 0 1 1 0 8 0 shmpl 112 150 0 22 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 12887 0 11466 90 1 89 90 0 8 0 ffsino 272 12887 0 11466 95 0 95 95 0 8 0 nchpl 144 24592 0 24123 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 88636 0 88636 58 57 1 1 0 8 1 percpumem 16 195 0 161 1 0 1 1 0 8 0 vcpupl 2048 70 0 0 9 0 9 9 0 8 0 vmpool 560 91 0 21 6 1 5 5 0 8 0 pfiaddrpl 120 8 0 2 1 0 1 1 0 8 0 scsiplug 72 5 0 5 4 4 0 1 0 8 0 scxspl 216 80954 0 80954 36 35 1 8 0 8 1 plimitpl 152 605 0 596 1 0 1 1 0 8 0 sigapl 424 8855 0 8802 15 8 7 7 0 8 0 futexpl 64 136696 0 136696 60 59 1 1 0 8 1 knotepl 112 153 0 0 3 0 3 3 0 8 0 kqueuepl 216 1441 0 1429 7 6 1 2 0 8 0 pipepl 336 1206 0 1196 90 88 2 2 0 8 0 fdescpl 496 8797 0 8779 3 0 3 3 0 8 0 filepl 152 56780 0 56626 42 36 6 9 0 8 0 lockfpl 104 1889 0 1887 1 0 1 1 0 8 0 lockfspl 48 599 0 597 1 0 1 1 0 8 0 sessionpl 144 50 0 39 1 0 1 1 0 8 0 pgrppl 48 66 0 55 1 0 1 1 0 8 0 ucredpl 96 16722 0 16710 1 0 1 1 0 8 0 zombiepl 144 8802 0 8801 5 4 1 1 0 8 0 processpl 1072 8855 0 8801 5 1 4 4 0 8 0 procpl 672 21829 0 21767 33 27 6 7 0 8 0 srpgc 96 16 0 16 7 7 0 1 0 8 0 sosppl 168 118 0 118 50 50 0 1 0 8 0 sockpl 480 12326 0 12293 138 133 5 7 0 8 0 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 244 0 0 22 1 21 22 0 8 0 mtagpl 96 59 0 0 1 0 1 1 0 8 0 mbufpl 256 2842 0 0 38 9 29 32 0 8 0 bufpl 280 21737 0 15408 453 0 453 453 0 8 0 anonpl 24 2492083 0 2474323 389 268 121 145 0 186 0 amapchunkpl 152 264559 0 263849 311 282 29 44 0 158 0 amappl16 200 22473 0 21802 267 231 36 48 0 8 0 amappl15 192 1180 0 1176 1 0 1 1 0 8 0 amappl14 184 838 0 833 2 1 1 1 0 8 0 amappl13 176 2738 0 2735 1 0 1 1 0 8 0 amappl12 168 1683 0 1677 1 0 1 1 0 8 0 amappl11 160 1495 0 1477 1 0 1 1 0 8 0 amappl10 152 740 0 737 1 0 1 1 0 8 0 amappl9 144 355 0 352 1 0 1 1 0 8 0 amappl8 136 1725 0 1641 3 0 3 3 0 8 0 amappl7 128 862 0 850 1 0 1 1 0 8 0 amappl6 120 282 0 268 1 0 1 1 0 8 0 amappl5 112 6570 0 6546 1 0 1 1 0 8 0 amappl4 104 4505 0 4472 4 3 1 2 0 8 0 amappl3 96 3328 0 3306 1 0 1 1 0 8 0 amappl2 88 11698 0 11629 3 1 2 2 0 8 0 amappl1 80 147830 0 147386 15 4 11 13 0 8 0 amappl 88 105332 0 105106 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 64 152 0 22 3 0 3 3 0 8 0 uaddrrnd 24 8888 0 8800 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8888 0 8800 1 0 1 1 0 8 0 vmmpekpl 168 55661 0 55616 3 0 3 3 0 8 0 vmmpepl 168 792807 0 790596 1005 881 124 139 0 357 22 vmsppl 368 8887 0 8800 13 4 9 9 0 8 1 rwobjpl 56 182909 0 181340 88 65 23 27 0 8 0 pdppl 4096 17784 0 17670 273 157 116 117 0 8 2 pvpl 32 4417813 0 4398060 644 461 183 246 0 265 0 pmappl 224 8887 0 8800 6 0 6 6 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 827 0 432 13 1 12 12 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(fffffd8075664900,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8075664900,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166f38,ffff800021166f44,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166f38,ffff800021166f44,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166f38,ffff800021166f44,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8066f65900) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8066f65900,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8066f65900) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167078) 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}> tc No such command ddb{1}>