uvm_fault(0xffffffff82839fb8, 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 * 15872 77935 0 0x14000 0x200 0K softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8062fd7800,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8062fd7800,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166d88,ffff800021166d94,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166d88,ffff800021166d94,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166d88,ffff800021166d94,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd80769a9000) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd80769a9000,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd80769a9000) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021166ec8) 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(0xffffffff82839fb8, 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(fffffd8062fd7800,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8062fd7800,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166d88,ffff800021166d94,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166d88,ffff800021166d94,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166d88,ffff800021166d94,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd80769a9000) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd80769a9000,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd80769a9000) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021166ec8) 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 0xffff800021166920 rbx 0 rdx 0 rcx 0x7 rax 0xffff800021148d20 r8 0xffffffff8116ca3c nd6_ns_input+0x3bc r9 0x1 r10 0x9b0c7c6e5cf48041 r11 0x2da32824e70fb514 r12 0 r13 0x3 r14 0 r15 0xffff800000cb0e00 rip 0xffffffff8116f268 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000211668a0 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{0}> show proc PROC (softnet) pid=15872 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021148fc0,0xffff800021148a90 process=0xffff8000ffffd8f0 user=0xffff800021162000, vmspace=0xffffffff82839fb8 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61851 390742 7161 0 2 0 syz-executor.0 61851 15830 7161 0 2 0x4000000 syz-executor.0 3031 135098 19883 0 2 0 syz-executor.1 3031 282424 19883 0 3 0x4000080 fsleep syz-executor.1 7161 32027 4084 0 2 0x482 syz-executor.0 19883 9407 4084 0 2 0x482 syz-executor.1 92344 487099 1 0 3 0x100083 ttyin getty 92671 203845 0 0 3 0x14200 bored sosplice 4084 103273 64551 0 3 0x82 thrsleep syz-fuzzer 4084 520534 64551 0 3 0x4000082 thrsleep syz-fuzzer 4084 217981 64551 0 3 0x4000082 thrsleep syz-fuzzer 4084 37671 64551 0 3 0x4000082 thrsleep syz-fuzzer 4084 44421 64551 0 3 0x4000082 thrsleep syz-fuzzer 4084 512662 64551 0 3 0x4000082 kqread syz-fuzzer 4084 354736 64551 0 3 0x4000082 thrsleep syz-fuzzer 4084 343120 64551 0 3 0x4000082 thrsleep syz-fuzzer 64551 404775 10484 0 3 0x10008a sigsusp ksh 10484 428244 87896 0 3 0x9a kqread sshd 87896 325560 1 0 3 0x88 kqread sshd 79237 502372 71511 74 3 0x100092 bpf pflogd 71511 24247 1 0 3 0x80 netio pflogd 42511 98062 6853 73 3 0x100090 kqread syslogd 6853 72149 1 0 3 0x100082 netio syslogd 97388 236537 1 0 3 0x100080 kqread resolvd 73439 139600 70729 77 3 0x100092 kqread dhcpleased 26900 460438 70729 77 3 0x100092 kqread dhcpleased 70729 290355 1 0 3 0x80 kqread dhcpleased 36919 479128 0 0 3 0x14200 bored smr 54433 495304 0 0 2 0x14200 zerothread 21039 136028 0 0 3 0x14200 aiodoned aiodoned 47201 2872 0 0 3 0x14200 syncer update 27498 311221 0 0 3 0x14200 cleaner cleaner 42607 424172 0 0 3 0x14200 reaper reaper 49021 329373 0 0 3 0x14200 pgdaemon pagedaemon 63451 351095 0 0 3 0x14200 bored viomb 51797 295257 0 0 3 0x40014200 acpi0 acpi0 44449 446467 0 0 7 0x40014200 idle1 *77935 15872 0 0 7 0x14200 softnet 62748 450741 0 0 2 0x14200 systqmp 61454 158787 0 0 3 0x14200 bored systq 67829 301932 0 0 3 0x40014200 bored softclock 48363 477276 0 0 3 0x40014200 idle0 1 117083 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 77935 (softnet) thread 0xffff800021148d20 (15872) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82977ae0) #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 (0xffffffff827f2540) #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 10167 6448K 6931K 78643K 50971 0 pcb 14 24K 28K 78643K 4399 0 rtable 110 15K 16K 78643K 5210 0 ifaddr 57 21K 25K 78643K 1990 0 sysctl 3 1K 1K 78643K 3 0 counters 44 34K 34K 78643K 780 0 ioctlops 0 0K 4K 78643K 7528 0 iov 0 0K 24K 78643K 2516 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1490 94K 94K 78643K 16015 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 188 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 4592 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 25K 78643K 28699 0 sigio 0 0K 0K 78643K 673 0 proc 74 87K 111K 78643K 2827 0 subproc 26 1K 1K 78643K 783 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2460 0 in_multi 30 2K 2K 78643K 2905 0 ether_multi 1 0K 0K 78643K 743 0 mrt 1 0K 0K 78643K 105 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 259 1155K 1155K 78643K 259 0 exec 0 0K 2K 78643K 4666 0 pfkey data 0 0K 0K 78643K 4 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 541 1206K 1222K 78643K 352820 0 UVM aobj 131 6K 6K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 2674 0 NDP 7 0K 0K 78643K 624 0 temp 96 4218K 8314K 78643K 182949 0 kqueue 18 25K 33K 78643K 1098 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 4065 0 4062 57 56 1 5 0 8 0 rtentry 112 1607 0 1574 9 7 2 2 0 8 0 unpcb 128 14269 0 14254 175 172 3 8 0 8 2 syncache 296 59 0 59 17 17 0 1 0 8 0 tcpqe 32 70 0 70 11 11 0 1 0 8 0 tcpcb 736 9582 0 9578 357 350 7 21 0 8 6 arp 120 173 0 167 1 0 1 1 0 8 0 inpcb 304 52418 0 52408 555 546 9 16 0 8 8 rttmr 72 5 0 5 2 2 0 1 0 8 0 nd6 48 335 0 331 3 2 1 1 0 8 0 pkpcb 40 166 0 166 21 20 1 1 0 8 1 kcovpl 48 60 0 58 1 0 1 1 0 8 0 ppxss 1248 136 0 136 27 27 0 1 0 8 0 pfstscr 40 9 0 9 3 3 0 1 0 8 0 pffrag 232 172 0 172 25 25 0 1 0 482 0 pffrnode 88 172 0 172 25 25 0 1 0 8 0 pffrent 40 2253 0 2253 26 26 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 81 0 74 1 0 1 1 0 8 0 pftag 88 10 0 9 1 0 1 1 0 8 0 pfqueue 264 5 0 0 1 0 1 1 0 8 0 pfstitem 24 47 0 45 1 0 1 1 0 8 0 pfstkey 112 67 0 65 1 0 1 1 0 8 0 pfstate 320 54 0 52 3 2 1 2 0 8 0 pfrule 1360 535 0 467 7 1 6 6 0 8 0 art_heap8 4096 16 0 15 6 5 1 3 0 8 0 art_heap4 256 7417 0 7249 73 60 13 15 0 8 2 art_table 32 7433 0 7264 4 2 2 2 0 8 0 art_node 16 1489 0 1459 1 0 1 1 0 8 0 sysvmsgpl 40 55 0 26 1 0 1 1 0 8 0 semupl 112 68 0 68 1 1 0 1 0 8 0 semapl 112 4589 0 4579 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 38352 0 36908 92 1 91 91 0 8 0 ffsino 272 38352 0 36908 98 1 97 97 0 8 0 nchpl 144 79946 0 78341 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 264481 0 264481 11 10 1 1 0 8 1 percpumem 16 402 0 368 1 0 1 1 0 8 0 vcpupl 2048 433 0 0 55 0 55 55 0 8 0 vmpool 560 512 0 79 33 2 31 31 0 8 0 pfiaddrpl 120 27 0 13 1 0 1 1 0 8 0 scsiplug 72 12 0 12 4 4 0 1 0 8 0 scxspl 216 233956 0 233956 28 27 1 8 0 8 1 plimitpl 152 2597 0 2588 1 0 1 1 0 8 0 sigapl 424 28821 0 28787 7 2 5 7 0 8 0 futexpl 64 279765 0 279764 18 17 1 1 0 8 0 knotepl 112 199 0 0 5 1 4 4 0 8 0 kqueuepl 216 6839 0 6819 182 180 2 7 0 8 0 pipepl 336 4813 0 4803 203 201 2 7 0 8 1 fdescpl 496 28762 0 28743 3 0 3 3 0 8 0 filepl 152 211264 0 211155 474 463 11 17 0 8 6 lockfpl 104 6372 0 6370 8 7 1 2 0 8 0 lockfspl 48 2024 0 2022 1 0 1 1 0 8 0 sessionpl 144 78 0 67 1 0 1 1 0 8 0 pgrppl 48 194 0 183 1 0 1 1 0 8 0 ucredpl 96 22938 0 22926 1 0 1 1 0 8 0 zombiepl 144 28787 0 28787 6 5 1 1 0 8 1 processpl 1064 28821 0 28787 4 0 4 4 0 8 0 procpl 672 73476 0 73433 79 74 5 8 0 8 0 srpgc 96 34 0 34 14 14 0 1 0 8 0 sosppl 168 158 0 158 34 34 0 1 0 8 0 sockpl 480 71121 0 71093 1295 1283 12 33 0 8 8 mcl64k 65536 25 0 0 4 1 3 3 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 0 8 0 mcl8k 8192 20 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 560 0 0 23 1 22 23 0 8 0 mtagpl 96 1582 0 0 9 4 5 7 0 8 0 mbufpl 256 2945 0 0 82 0 82 82 0 8 0 bufpl 280 50518 0 44189 453 0 453 453 0 8 0 anonpl 24 7990233 0 7966097 482 328 154 177 0 186 0 amapchunkpl 152 863309 0 862580 214 172 42 42 0 158 12 amappl16 200 76735 0 75648 213 149 64 70 0 8 0 amappl15 192 7374 0 7368 1 0 1 1 0 8 0 amappl14 184 2303 0 2302 7 6 1 1 0 8 0 amappl13 176 2863 0 2862 1 0 1 1 0 8 0 amappl12 168 2806 0 2804 1 0 1 1 0 8 0 amappl11 160 3760 0 3742 1 0 1 1 0 8 0 amappl10 152 2350 0 2345 1 0 1 1 0 8 0 amappl9 144 4776 0 4770 1 0 1 1 0 8 0 amappl8 136 4982 0 4865 6 1 5 5 0 8 0 amappl7 128 3683 0 3675 1 0 1 1 0 8 0 amappl6 120 4817 0 4794 1 0 1 1 0 8 0 amappl5 112 27552 0 27525 1 0 1 1 0 8 0 amappl4 104 7000 0 6974 1 0 1 1 0 8 0 amappl3 96 5524 0 5500 1 0 1 1 0 8 0 amappl2 88 34188 0 34128 4 2 2 3 0 8 0 amappl1 80 474297 0 473835 22 12 10 13 0 8 0 amappl 88 350886 0 350609 10 3 7 7 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 64 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 29274 0 28822 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 29274 0 28822 3 0 3 3 0 8 0 vmmpekpl 168 150817 0 150750 4 0 4 4 0 8 0 vmmpepl 168 2579399 0 2575852 1131 950 181 191 0 357 18 vmsppl 368 29273 0 28822 45 3 42 42 0 8 0 rwobjpl 56 595345 0 593290 72 42 30 33 0 8 0 pdppl 4096 58556 0 58077 556 77 479 481 0 8 0 pvpl 32 13708221 0 13687675 699 517 182 253 0 265 0 pmappl 224 29273 0 28822 29 2 27 27 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 1625 0 713 30 3 27 27 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(fffffd8062fd7800,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8062fd7800,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166d88,ffff800021166d94,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166d88,ffff800021166d94,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166d88,ffff800021166d94,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd80769a9000) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd80769a9000,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd80769a9000) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021166ec8) 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