login: uvm_fault(0xffffffff829033d8, 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 * 92007 7046 0 0x14000 0x200 0K softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd806eedc400,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd806eedc400,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167778,ffff800021167784,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167778,ffff800021167784,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167778,ffff800021167784,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806d308d00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806d308d00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806d308d00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff8000211678b8) 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(0xffffffff829033d8, 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(fffffd806eedc400,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd806eedc400,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167778,ffff800021167784,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167778,ffff800021167784,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167778,ffff800021167784,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806d308d00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806d308d00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806d308d00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff8000211678b8) 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 0xffff800021167310 rbx 0 rdx 0 rcx 0x7 rax 0xffff8000211482a0 r8 0xffffffff810060fc nd6_ns_input+0x3bc r9 0x1 r10 0xf9956e84909a5c4b r11 0xc152f92c5687b4ac r12 0 r13 0x2 r14 0 r15 0xffff800000bb9100 rip 0xffffffff81008928 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021167290 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{0}> show proc PROC (softnet) pid=92007 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021148540,0xffff800021148010 process=0xffff8000ffffc000 user=0xffff800021162000, vmspace=0xffffffff829033d8 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 70605 244738 69063 0 2 0x82000 syz-executor.1 70605 104135 69063 0 3 0x4002000 suspend syz-executor.1 5047 424864 61169 0 2 0 syz-executor.0 5047 81599 61169 0 2 0x4000000 syz-executor.0 16214 363316 1 0 3 0x100083 ttyin getty 69063 108985 44012 0 2 0x482 syz-executor.1 61169 265258 44012 0 3 0x82 nanoslp syz-executor.0 40437 226506 0 0 3 0x14200 acct acct 82161 99074 0 0 3 0x14200 bored sosplice 44012 258730 53273 0 3 0x82 thrsleep syz-fuzzer 44012 192699 53273 0 3 0x4000082 thrsleep syz-fuzzer 44012 387446 53273 0 3 0x4000082 kqread syz-fuzzer 44012 415524 53273 0 3 0x4000082 thrsleep syz-fuzzer 44012 36584 53273 0 3 0x4000082 thrsleep syz-fuzzer 44012 64914 53273 0 3 0x4000082 thrsleep syz-fuzzer 44012 521009 53273 0 3 0x4000082 thrsleep syz-fuzzer 44012 319400 53273 0 3 0x4000082 thrsleep syz-fuzzer 53273 31507 16510 0 3 0x10008a sigsusp ksh 16510 398320 11297 0 3 0x9a kqread sshd 11297 337741 1 0 3 0x88 kqread sshd 26066 12249 47458 74 2 0x100492 pflogd 47458 40964 1 0 3 0x80 netio pflogd 86071 148568 83596 73 3 0x100090 kqread syslogd 83596 402385 1 0 3 0x100082 netio syslogd 53313 308192 1 0 3 0x100080 kqread resolvd 18924 26599 0 0 3 0x14200 bored smr 89425 470698 0 0 2 0x14200 zerothread 26970 97042 0 0 3 0x14200 aiodoned aiodoned 67775 402843 0 0 3 0x14200 syncer update 71179 306288 0 0 3 0x14200 cleaner cleaner 7710 383667 0 0 3 0x14200 reaper reaper 7701 338091 0 0 3 0x14200 pgdaemon pagedaemon 99916 472959 0 0 3 0x14200 bored viomb 69193 326490 0 0 3 0x40014200 acpi0 acpi0 4325 403659 0 0 7 0x40014200 idle1 * 7046 92007 0 0 7 0x14200 softnet 93157 414745 0 0 2 0x14200 systqmp 45603 344474 0 0 3 0x14200 bored systq 17611 391622 0 0 3 0x40014200 bored softclock 89431 137468 0 0 3 0x40014200 idle0 1 488123 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 7046 (softnet) thread 0xffff8000211482a0 (92007) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828be3e0) #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 (0xffffffff827ff110) #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 10122 6439K 6762K 78643K 13160 0 pcb 14 8K 8K 78643K 281 0 rtable 92 6K 8K 78643K 1206 0 ifaddr 57 14K 15K 78643K 357 0 sysctl 2 0K 0K 78643K 2 0 counters 44 34K 34K 78643K 116 0 ioctlops 0 0K 4K 78643K 1786 0 iov 0 0K 16K 78643K 140 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1247 78K 79K 78643K 2634 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 22 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1378 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 25K 78643K 3423 0 sigio 0 0K 0K 78643K 20 0 proc 65 63K 112K 78643K 1275 0 subproc 66 4K 4K 78643K 595 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 300 0 in_multi 25 1K 2K 78643K 448 0 ether_multi 1 0K 0K 78643K 37 0 mrt 2 0K 0K 78643K 9 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 2K 78643K 984 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 274 276K 280K 78643K 43242 0 UVM aobj 61 5K 5K 78643K 63 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 265 0 NDP 7 0K 0K 78643K 99 0 temp 87 4200K 4308K 78643K 57050 0 kqueue 6 10K 24K 78643K 180 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 120 172 0 171 1 0 1 1 0 8 0 rtentry 112 369 0 343 4 2 2 2 0 8 0 unpcb 128 1567 0 1559 1 0 1 1 0 8 0 syncache 296 13 0 13 6 6 0 1 0 8 0 tcpqe 32 62 0 62 3 3 0 1 0 8 0 tcpcb 736 929 0 925 14 12 2 5 0 8 1 arp 120 59 0 54 1 0 1 1 0 8 0 inpcb 304 2249 0 2241 11 10 1 2 0 8 0 rttmr 72 3 0 3 2 2 0 1 0 8 0 nd6 48 76 0 74 1 0 1 1 0 8 0 pkpcb 40 10 0 10 3 2 1 1 0 8 1 kcovpl 48 18 0 16 1 0 1 1 0 8 0 ppxss 1248 4 0 4 3 3 0 1 0 8 0 pffrag 232 18 0 18 9 8 1 1 0 482 1 pffrnode 88 18 0 18 9 8 1 1 0 8 1 pffrent 40 463 0 463 9 8 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 84 0 78 2 1 1 1 0 8 0 pftag 88 5 0 1 1 0 1 1 0 8 0 pfqueue 264 6 0 2 1 0 1 1 0 8 0 pfstitem 24 24 0 22 1 0 1 1 0 8 0 pfstkey 112 26 0 24 1 0 1 1 0 8 0 pfstate 320 26 0 24 2 1 1 2 0 8 0 pfrule 1360 156 0 125 5 2 3 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1836 0 1683 20 9 11 13 0 8 0 art_table 32 1837 0 1683 2 0 2 2 0 8 0 art_node 16 366 0 341 1 0 1 1 0 8 0 sysvmsgpl 40 39 0 32 1 0 1 1 0 8 0 semapl 112 1376 0 1366 1 0 1 1 0 8 0 shmpl 112 60 0 2 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 6501 0 5084 89 0 89 89 0 8 0 ffsino 272 6501 0 5084 95 0 95 95 0 8 0 nchpl 144 11141 0 9539 61 0 61 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 34036 0 34036 4 3 1 1 0 8 1 percpumem 16 70 0 36 1 0 1 1 0 8 0 vcpupl 2048 23 0 0 3 0 3 3 0 8 0 vmpool 560 29 0 6 2 0 2 2 0 8 0 pfiaddrpl 120 24 0 20 5 4 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 36166 0 36166 12 11 1 8 0 8 1 plimitpl 152 165 0 157 1 0 1 1 0 8 0 sigapl 424 3650 0 3618 7 2 5 7 0 8 0 futexpl 64 45451 0 45451 5 4 1 1 0 8 1 knotepl 112 83 0 0 2 0 2 2 0 8 0 kqueuepl 216 332 0 327 1 0 1 1 0 8 0 pipepl 336 411 0 401 6 4 2 2 0 8 1 fdescpl 496 3613 0 3597 3 0 3 3 0 8 0 filepl 152 16380 0 16247 11 5 6 7 0 8 0 lockfpl 104 532 0 530 1 0 1 1 0 8 0 lockfspl 48 176 0 174 1 0 1 1 0 8 0 sessionpl 144 37 0 27 1 0 1 1 0 8 0 pgrppl 48 43 0 33 1 0 1 1 0 8 0 ucredpl 96 1752 0 1743 1 0 1 1 0 8 0 zombiepl 144 3618 0 3618 2 1 1 1 0 8 1 processpl 1064 3650 0 3618 4 0 4 4 0 8 0 procpl 672 8856 0 8815 9 5 4 6 0 8 0 srpgc 96 10 0 10 4 4 0 1 0 8 0 sosppl 168 14 0 14 6 6 0 1 0 8 0 sockpl 480 4005 0 3988 13 10 3 5 0 8 0 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 15 0 0 2 0 2 2 0 8 0 mcl9k 9216 11 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 249 0 0 30 1 29 30 0 8 2 mtagpl 96 23 0 0 1 0 1 1 0 8 0 mbufpl 256 784 0 0 29 0 29 29 0 8 0 bufpl 280 12336 0 6007 453 0 453 453 0 8 0 anonpl 24 1014475 0 998421 182 64 118 125 0 186 14 amapchunkpl 152 107843 0 107216 95 57 38 39 0 158 11 amappl16 200 9169 0 8620 91 57 34 42 0 8 5 amappl15 192 285 0 280 1 0 1 1 0 8 0 amappl14 184 335 0 330 1 0 1 1 0 8 0 amappl13 176 128 0 127 1 0 1 1 0 8 0 amappl12 168 711 0 706 1 0 1 1 0 8 0 amappl11 160 1017 0 1005 1 0 1 1 0 8 0 amappl10 152 317 0 312 1 0 1 1 0 8 0 amappl9 144 269 0 268 1 0 1 1 0 8 0 amappl8 136 1607 0 1551 2 0 2 2 0 8 0 amappl7 128 1048 0 1041 1 0 1 1 0 8 0 amappl6 120 149 0 141 1 0 1 1 0 8 0 amappl5 112 2467 0 2449 1 0 1 1 0 8 0 amappl4 104 2601 0 2576 1 0 1 1 0 8 0 amappl3 96 1060 0 1041 1 0 1 1 0 8 0 amappl2 88 4299 0 4256 4 2 2 2 0 8 0 amappl1 80 64606 0 64198 14 3 11 13 0 8 0 amappl 88 42589 0 42411 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 62 0 2 1 0 1 1 0 8 0 uaddrrnd 24 3642 0 3603 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3642 0 3603 1 0 1 1 0 8 0 vmmpekpl 168 26786 0 26761 2 0 2 2 0 8 0 vmmpepl 168 329891 0 328069 246 159 87 109 0 357 5 vmsppl 368 3641 0 3603 4 0 4 4 0 8 0 rwobjpl 56 78732 0 77453 33 13 20 22 0 8 0 pdppl 4096 7291 0 7229 98 36 62 67 0 8 0 pvpl 32 1813350 0 1793743 303 96 207 228 0 265 41 pmappl 224 3641 0 3603 3 0 3 3 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 409 0 69 10 0 10 10 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(fffffd806eedc400,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd806eedc400,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167778,ffff800021167784,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167778,ffff800021167784,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167778,ffff800021167784,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd806d308d00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd806d308d00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd806d308d00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff8000211678b8) 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