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 * 10682 15320 0 0x14000 0x200 0K softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8064169000,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8064169000,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166f08,ffff800021166f14,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166f08,ffff800021166f14,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166f08,ffff800021166f14,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8070e79400) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8070e79400,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8070e79400) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167048) 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(fffffd8064169000,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8064169000,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166f08,ffff800021166f14,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166f08,ffff800021166f14,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166f08,ffff800021166f14,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8070e79400) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8070e79400,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8070e79400) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167048) 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 0xffff800021166aa0 rbx 0 rdx 0 rcx 0x7 rax 0xffff800021148fc0 r8 0xffffffff810060fc nd6_ns_input+0x3bc r9 0x1 r10 0x900217447237de31 r11 0xebe5054a8ef11f98 r12 0 r13 0x3 r14 0 r15 0xffff800000bfd400 rip 0xffffffff81008928 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021166a20 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{0}> show proc PROC (softnet) pid=10682 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021149260,0xffff800021148d30 process=0xffff8000ffffdd18 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 18317 396349 53310 0 2 0 syz-executor.1 18317 492773 53310 0 2 0x4000000 syz-executor.1 59994 517904 21770 0 2 0 syz-executor.0 59994 191377 21770 0 3 0x4000080 fsleep syz-executor.0 53310 246924 34610 0 3 0x82 nanoslp syz-executor.1 21770 16068 34610 0 2 0x482 syz-executor.0 1050 338123 0 0 3 0x14200 acct acct 28782 173423 1 0 3 0x100083 ttyin getty 90912 366105 0 0 3 0x14200 bored sosplice 34610 66840 93869 0 3 0x82 thrsleep syz-fuzzer 34610 313145 93869 0 2 0x4000482 syz-fuzzer 34610 228414 93869 0 3 0x4000082 thrsleep syz-fuzzer 34610 172878 93869 0 3 0x4000082 thrsleep syz-fuzzer 34610 484110 93869 0 3 0x4000082 thrsleep syz-fuzzer 34610 58535 93869 0 3 0x4000082 thrsleep syz-fuzzer 34610 237414 93869 0 3 0x4000082 thrsleep syz-fuzzer 34610 482430 93869 0 2 0x4000482 syz-fuzzer 93869 54303 18146 0 3 0x10008a sigsusp ksh 18146 239647 90775 0 3 0x9a kqread sshd 90775 295235 1 0 3 0x88 kqread sshd 5879 313590 66328 74 3 0x100092 bpf pflogd 66328 242315 1 0 3 0x80 netio pflogd 26612 233618 64502 73 3 0x100090 kqread syslogd 64502 70501 1 0 3 0x100082 netio syslogd 20522 122753 1 0 3 0x100080 kqread resolvd 1864 271562 81232 77 3 0x100092 kqread dhcpleased 83297 143110 81232 77 3 0x100092 kqread dhcpleased 81232 456631 1 0 3 0x80 kqread dhcpleased 41721 6213 0 0 3 0x14200 bored smr 93932 195419 0 0 2 0x14200 zerothread 52279 314997 0 0 3 0x14200 aiodoned aiodoned 78536 189307 0 0 3 0x14200 syncer update 99627 139030 0 0 3 0x14200 cleaner cleaner 64832 475273 0 0 3 0x14200 reaper reaper 98066 491933 0 0 3 0x14200 pgdaemon pagedaemon 70538 469553 0 0 3 0x14200 bored viomb 32597 229847 0 0 3 0x40014200 acpi0 acpi0 8383 437139 0 0 7 0x40014200 idle1 *15320 10682 0 0 7 0x14200 softnet 69957 391683 0 0 2 0x14200 systqmp 74475 345331 0 0 3 0x14200 bored systq 33113 182162 0 0 2 0x40014200 softclock 47883 115179 0 0 3 0x40014200 idle0 1 41198 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 15320 (softnet) thread 0xffff800021148fc0 (10682) 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 10138 6459K 14751K 78643K 30051 0 pcb 14 8K 8K 78643K 1751 0 rtable 139 25K 28K 78643K 5457 0 ifaddr 183 46K 46K 78643K 2073 0 sysctl 2 0K 0K 78643K 2 0 counters 48 34K 34K 78643K 268 0 ioctlops 0 0K 4K 78643K 5013 0 iov 0 0K 16K 78643K 449 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1263 79K 80K 78643K 7136 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 102 0 VM map 2 1K 1K 78643K 2 0 sem 10 1K 1K 78643K 17 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 25K 78643K 27226 0 sigio 0 0K 0K 78643K 141 0 proc 79 88K 111K 78643K 1050 0 subproc 66 4K 4K 78643K 533 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 4541 0 in_multi 26 1K 2K 78643K 3200 0 ether_multi 1 0K 0K 78643K 356 0 mrt 2 0K 0K 78643K 87 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 1111 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 438 322K 337K 78643K 320524 0 UVM aobj 131 6K 6K 78643K 145 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 4309 0 NDP 9 0K 0K 78643K 537 0 temp 104 4218K 8306K 78643K 152870 0 kqueue 13 20K 36K 78643K 496 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 120 689 0 686 1 0 1 1 0 8 0 rtentry 112 1868 0 1840 2 0 2 2 0 8 0 unpcb 128 5825 0 5810 4 3 1 2 0 8 0 syncache 296 76 0 76 12 12 0 1 0 8 0 tcpqe 32 28 94 28 3 3 0 1 0 8 0 tcpcb 736 16297 0 16283 81 78 3 7 0 8 1 arp 120 91 0 85 1 0 1 1 0 8 0 inpcb 304 31920 0 31903 34 32 2 3 0 8 0 rttmr 72 47 0 47 7 6 1 1 0 8 1 nd6 48 441 0 439 3 2 1 1 0 8 0 pkpcb 40 51 0 51 12 12 0 1 0 8 0 kcovpl 48 16 0 14 1 0 1 1 0 8 0 ppxss 1248 12 0 12 6 6 0 1 0 8 0 pfstscr 40 231 0 231 6 6 0 1 0 8 0 pffrag 232 109 0 109 13 12 1 4 0 482 1 pffrnode 88 94 0 94 10 9 1 1 0 8 1 pffrent 40 1554 0 1554 11 10 1 1 0 8 1 pfosfp 40 1460 0 1033 5 0 5 5 0 8 0 pfosfpen 112 1460 0 737 21 0 21 21 0 8 0 pfrktable 1344 610 0 583 6 3 3 3 0 8 0 pftag 88 12 0 10 1 0 1 1 0 8 0 pfqueue 264 4 0 4 2 2 0 1 0 8 0 pfstitem 24 4706 0 4654 11 7 4 7 0 8 1 pfstkey 112 6707 0 6655 53 44 9 31 0 8 3 pfstate 320 3403 0 3376 84 69 15 45 0 8 6 pfrule 1360 2288 0 1741 47 1 46 46 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 8117 0 7961 28 15 13 17 0 8 1 art_table 32 8118 0 7961 3 0 3 3 0 8 0 art_node 16 1853 0 1826 1 0 1 1 0 8 0 sysvmsgpl 40 45 0 8 1 0 1 1 0 8 0 semupl 112 7 0 7 1 1 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 142 0 14 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 33056 0 31644 89 0 89 89 0 8 0 ffsino 272 33056 0 31644 95 0 95 95 0 8 0 nchpl 144 66094 0 65648 61 42 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 166127 0 166127 14 13 1 1 0 8 1 percpumem 16 146 0 110 1 0 1 1 0 8 0 vcpupl 2048 22 0 1 3 0 3 3 0 8 0 vmpool 560 35 0 14 3 1 2 2 0 8 0 pfiaddrpl 120 585 0 325 9 1 8 8 0 8 0 scsiplug 72 5 0 5 2 2 0 1 0 8 0 scxspl 216 217061 0 217061 21 20 1 8 0 8 1 plimitpl 152 464 0 455 1 0 1 1 0 8 0 sigapl 424 27463 0 27428 7 2 5 7 0 8 0 futexpl 64 291765 0 291764 15 14 1 1 0 8 0 knotepl 112 168 0 0 3 0 3 3 0 8 0 kqueuepl 216 2253 0 2239 7 6 1 2 0 8 0 pipepl 336 1400 0 1390 43 42 1 3 0 8 0 fdescpl 496 27422 0 27403 3 0 3 3 0 8 0 filepl 152 106015 0 105862 54 47 7 9 0 8 1 lockfpl 104 2924 0 2921 1 0 1 1 0 8 0 lockfspl 48 1034 0 1031 1 0 1 1 0 8 0 sessionpl 144 36 0 25 1 0 1 1 0 8 0 pgrppl 48 52 0 41 1 0 1 1 0 8 0 ucredpl 96 10710 0 10698 1 0 1 1 0 8 0 zombiepl 144 27428 0 27428 3 2 1 1 0 8 1 processpl 1064 27463 0 27428 4 0 4 4 0 8 0 procpl 672 56995 0 56951 9 4 5 6 0 8 0 srpgc 96 6 0 6 3 3 0 1 0 8 0 sosppl 168 158 0 158 11 10 1 1 0 8 1 sockpl 480 38518 0 38483 48 42 6 8 0 8 1 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 11 0 0 2 0 2 2 0 8 0 mcl9k 9216 1 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 946 0 0 24 2 22 22 0 8 0 mtagpl 96 921 0 0 18 6 12 13 0 8 0 mbufpl 256 2301 0 0 92 10 82 82 0 8 0 bufpl 280 71465 0 65136 453 0 453 453 0 8 0 anonpl 24 7099871 0 7088084 315 221 94 94 0 186 21 amapchunkpl 152 761530 0 761028 112 92 20 34 0 158 0 amappl16 200 69531 0 69161 129 102 27 32 0 8 7 amappl15 192 1546 0 1542 1 0 1 1 0 8 0 amappl14 184 4243 0 4238 1 0 1 1 0 8 0 amappl13 176 2968 0 2967 1 0 1 1 0 8 0 amappl12 168 2920 0 2916 1 0 1 1 0 8 0 amappl11 160 7153 0 7133 1 0 1 1 0 8 0 amappl10 152 5511 0 5505 1 0 1 1 0 8 0 amappl9 144 3159 0 3157 1 0 1 1 0 8 0 amappl8 136 1215 0 994 8 0 8 8 0 8 0 amappl7 128 115 0 106 1 0 1 1 0 8 0 amappl6 120 3200 0 3185 1 0 1 1 0 8 0 amappl5 112 28298 0 28274 1 0 1 1 0 8 0 amappl4 104 8522 0 8490 1 0 1 1 0 8 0 amappl3 96 6705 0 6686 1 0 1 1 0 8 0 amappl2 88 33558 0 33500 6 4 2 2 0 8 0 amappl1 80 425101 0 424649 13 3 10 13 0 8 0 amappl 88 319615 0 319420 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 64 144 0 14 3 0 3 3 0 8 0 uaddrrnd 24 27457 0 27417 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 27457 0 27417 1 0 1 1 0 8 0 vmmpekpl 168 117794 0 117762 2 0 2 2 0 8 0 vmmpepl 168 2347299 0 2345342 304 211 93 107 0 357 6 vmsppl 368 27456 0 27417 5 1 4 4 0 8 0 rwobjpl 56 515077 0 513739 45 22 23 23 0 8 4 pdppl 4096 54921 0 54855 111 45 66 67 0 8 0 pvpl 32 12616820 0 12600851 637 478 159 159 0 265 30 pmappl 224 27456 0 27417 3 0 3 3 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 643 0 209 13 0 13 13 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(fffffd8064169000,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8064169000,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166f08,ffff800021166f14,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166f08,ffff800021166f14,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166f08,ffff800021166f14,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8070e79400) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8070e79400,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8070e79400) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167048) 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