uvm_fault(0xffffffff82838608, 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 *228500 60958 0 0x14000 0x200 0K softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd80773f0100,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd80773f0100,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166ec8,ffff800021166ed4,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166ec8,ffff800021166ed4,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166ec8,ffff800021166ed4,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd807d6fc500) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd807d6fc500,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd807d6fc500) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167008) 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(0xffffffff82838608, 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(fffffd80773f0100,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd80773f0100,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166ec8,ffff800021166ed4,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166ec8,ffff800021166ed4,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166ec8,ffff800021166ed4,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd807d6fc500) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd807d6fc500,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd807d6fc500) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167008) 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 0xffff800021166a60 rbx 0 rdx 0 rcx 0x7 rax 0xffff8000211482a0 r8 0xffffffff81aa0c0c nd6_ns_input+0x3bc r9 0x1 r10 0x9cc503db8ef2fa0b r11 0xb4eaa07fa2330d6d r12 0 r13 0x2 r14 0 r15 0xffff800000d25800 rip 0xffffffff81aa3438 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000211669e0 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{0}> show proc PROC (softnet) pid=228500 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021148000,0xffff800021148550 process=0xffff8000ffffc428 user=0xffff800021162000, vmspace=0xffffffff82838608 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 3678 72625 37970 0 2 0 syz-executor.1 3678 173029 37970 0 3 0x4000080 fsleep syz-executor.1 78827 71339 36013 0 2 0 syz-executor.0 78827 82050 36013 0 2 0x4000000 syz-executor.0 36013 81552 83536 0 2 0x482 syz-executor.0 37970 110381 83536 0 3 0x82 nanoslp syz-executor.1 55198 101699 1 0 3 0x100083 ttyin getty 55925 393737 0 0 3 0x14200 acct acct 67613 401792 0 0 3 0x14200 bored sosplice 83536 186680 51951 0 3 0x82 kqread syz-fuzzer 83536 170126 51951 0 3 0x4000082 thrsleep syz-fuzzer 83536 247421 51951 0 3 0x4000082 thrsleep syz-fuzzer 83536 83555 51951 0 3 0x4000082 thrsleep syz-fuzzer 83536 147724 51951 0 3 0x4000082 thrsleep syz-fuzzer 83536 212104 51951 0 3 0x4000082 thrsleep syz-fuzzer 83536 244585 51951 0 3 0x4000082 thrsleep syz-fuzzer 83536 365349 51951 0 3 0x4000082 thrsleep syz-fuzzer 51951 490343 82919 0 3 0x10008a sigsusp ksh 82919 27999 73841 0 3 0x9a kqread sshd 73841 244449 1 0 3 0x88 kqread sshd 33397 78169 37436 74 3 0x100092 bpf pflogd 37436 383027 1 0 3 0x80 netio pflogd 80198 400826 15421 73 3 0x100090 kqread syslogd 15421 450665 1 0 3 0x100082 netio syslogd 19874 424892 1 0 3 0x100080 kqread resolvd 96070 366951 74475 77 3 0x100092 kqread dhcpleased 24468 406455 74475 77 3 0x100092 kqread dhcpleased 74475 273423 1 0 3 0x80 kqread dhcpleased 13386 19984 0 0 3 0x14200 bored smr 33158 518932 0 0 2 0x14200 zerothread 49919 79692 0 0 3 0x14200 aiodoned aiodoned 91863 448797 0 0 3 0x14200 syncer update 54374 275313 0 0 3 0x14200 cleaner cleaner 95800 21828 0 0 3 0x14200 reaper reaper 28525 116163 0 0 3 0x14200 pgdaemon pagedaemon 95820 372209 0 0 3 0x14200 bored viomb 70546 248353 0 0 3 0x40014200 acpi0 acpi0 73705 125362 0 0 7 0x40014200 idle1 *60958 228500 0 0 7 0x14200 softnet 28857 50034 0 0 2 0x14200 systqmp 93940 301808 0 0 3 0x14200 bored systq 75890 471919 0 0 3 0x40014200 bored softclock 31543 15594 0 0 3 0x40014200 idle0 1 5511 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 60958 (softnet) thread 0xffff8000211482a0 (228500) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829eed80) #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 (0xffffffff827a03f0) #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 10156 6597K 7357K 78643K 25781 0 pcb 14 8K 8K 78643K 786 0 rtable 181 32K 32K 78643K 2203 0 ifaddr 88 24K 25K 78643K 927 0 sysctl 3 1K 1K 78643K 3 0 counters 44 34K 34K 78643K 336 0 ioctlops 0 0K 4K 78643K 3474 0 iov 0 0K 24K 78643K 481 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1210 76K 76K 78643K 6049 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 64 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 691 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 25K 78643K 8720 0 sigio 1 0K 0K 78643K 3421 0 proc 70 87K 111K 78643K 2111 0 subproc 26 1K 1K 78643K 429 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 679 0 in_multi 34 2K 2K 78643K 929 0 ether_multi 1 0K 0K 78643K 140 0 mrt 2 0K 0K 78643K 30 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 103 466K 466K 78643K 103 0 exec 0 0K 2K 78643K 1686 0 pfkey data 0 0K 4K 78643K 16 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 414 582K 582K 78643K 105932 0 UVM aobj 131 9K 9K 78643K 149 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 940 0 NDP 9 0K 0K 78643K 257 0 temp 109 4236K 4316K 78643K 218960 0 kqueue 12 18K 36K 78643K 634 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 120 539 0 536 1 0 1 1 0 8 0 rtentry 112 630 0 595 2 0 2 2 0 8 0 unpcb 128 3121 0 3106 4 2 2 2 0 8 1 syncache 296 34 0 34 12 12 0 1 0 8 0 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 736 2179 0 2175 25 23 2 3 0 8 1 arp 120 102 0 96 1 0 1 1 0 8 0 inpcb 304 8170 0 8159 21 19 2 2 0 8 1 nd6 48 143 0 137 2 1 1 1 0 8 0 pkpcb 40 77 0 77 20 20 0 1 0 8 0 kcovpl 48 33 0 31 1 0 1 1 0 8 0 ppxss 1248 27 0 27 15 14 1 1 0 8 1 pfstscr 40 6 0 6 2 2 0 1 0 8 0 pffrag 232 76 0 75 9 8 1 1 0 482 0 pffrnode 88 76 0 75 9 8 1 1 0 8 0 pffrent 40 1027 0 1026 11 10 1 1 0 8 0 pfosfp 40 1430 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 190 0 151 7 3 4 4 0 8 0 pftag 88 24 0 17 3 2 1 1 0 8 0 pfstitem 24 51 0 49 1 0 1 1 0 8 0 pfstkey 112 63 0 61 1 0 1 1 0 8 0 pfstate 320 57 0 55 3 2 1 3 0 8 0 pfrule 1360 1423 0 1001 40 4 36 36 0 8 0 art_heap8 4096 9 0 8 7 6 1 3 0 8 0 art_heap4 256 3110 0 2928 33 21 12 15 0 8 0 art_table 32 3119 0 2936 2 0 2 2 0 8 0 art_node 16 627 0 595 1 0 1 1 0 8 0 sysvmsgpl 40 52 0 26 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 689 0 679 1 0 1 1 0 8 0 shmpl 112 146 0 18 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 12200 0 10765 91 0 91 91 0 8 0 ffsino 272 12200 0 10765 97 0 97 97 0 8 0 nchpl 144 23523 0 23050 61 42 19 61 0 8 0 uvmvnodes 72 6068 0 0 111 0 111 111 0 8 0 vnodes 224 6068 0 0 357 0 357 357 0 8 0 namei 1024 76407 0 76407 13 12 1 1 0 8 1 percpumem 16 180 0 146 1 0 1 1 0 8 0 vcpupl 2048 56 0 0 7 0 7 7 0 8 0 vmpool 560 72 0 16 6 2 4 4 0 8 0 pfiaddrpl 120 93 0 42 3 1 2 2 0 8 0 scsiplug 72 4 0 4 3 3 0 1 0 8 0 scxspl 216 85717 0 85717 25 24 1 8 0 8 1 plimitpl 152 561 0 552 1 0 1 1 0 8 0 sigapl 424 8928 0 8893 10 3 7 7 0 8 2 futexpl 64 127413 0 127412 12 11 1 1 0 8 0 knotepl 112 189 0 0 3 0 3 3 0 8 0 kqueuepl 216 1354 0 1341 6 4 2 2 0 8 1 pipepl 336 1473 0 1463 12 10 2 2 0 8 0 fdescpl 496 8870 0 8851 3 0 3 3 0 8 0 filepl 152 48651 0 48537 21 15 6 6 0 8 1 lockfpl 104 1693 0 1691 1 0 1 1 0 8 0 lockfspl 48 574 0 572 1 0 1 1 0 8 0 sessionpl 144 57 0 46 1 0 1 1 0 8 0 pgrppl 48 95 0 84 1 0 1 1 0 8 0 ucredpl 96 4748 0 4736 1 0 1 1 0 8 0 zombiepl 144 8893 0 8893 3 2 1 1 0 8 1 processpl 1064 8928 0 8893 5 1 4 4 0 8 0 procpl 672 20721 0 20677 10 4 6 6 0 8 1 srpgc 96 9 0 9 5 5 0 1 0 8 0 sosppl 168 454 0 454 18 17 1 1 0 8 1 sockpl 480 11924 0 11895 26 20 6 6 0 8 2 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 12 0 0 1 0 1 1 0 8 0 mcl8k 8192 14 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 284 0 0 28 2 26 28 0 8 0 mtagpl 96 202 0 0 3 0 3 3 0 8 0 mbufpl 256 1106 0 0 37 0 37 37 0 8 0 bufpl 280 21503 0 15174 453 0 453 453 0 8 0 anonpl 24 2494689 0 2476131 314 186 128 158 0 186 0 amapchunkpl 152 256180 0 255446 156 127 29 42 0 158 0 amappl16 200 21541 0 20816 181 139 42 51 0 8 3 amappl15 192 1440 0 1434 1 0 1 1 0 8 0 amappl14 184 1271 0 1269 1 0 1 1 0 8 0 amappl13 176 878 0 876 1 0 1 1 0 8 0 amappl12 168 1201 0 1195 1 0 1 1 0 8 0 amappl11 160 1128 0 1111 1 0 1 1 0 8 0 amappl10 152 141 0 137 1 0 1 1 0 8 0 amappl9 144 2916 0 2910 1 0 1 1 0 8 0 amappl8 136 1943 0 1846 4 0 4 4 0 8 0 amappl7 128 1062 0 1053 1 0 1 1 0 8 0 amappl6 120 2839 0 2825 1 0 1 1 0 8 0 amappl5 112 6436 0 6407 1 0 1 1 0 8 0 amappl4 104 3808 0 3780 1 0 1 1 0 8 0 amappl3 96 2078 0 2055 1 0 1 1 0 8 0 amappl2 88 10606 0 10554 3 1 2 2 0 8 0 amappl1 80 149196 0 148735 15 5 10 13 0 8 0 amappl 88 104874 0 104641 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 64 148 0 18 3 0 3 3 0 8 0 uaddrrnd 24 8942 0 8867 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8942 0 8867 1 0 1 1 0 8 0 vmmpekpl 168 54353 0 54314 3 0 3 3 0 8 0 vmmpepl 168 795986 0 793696 503 368 135 136 0 357 35 vmsppl 368 8941 0 8867 8 1 7 7 0 8 0 rwobjpl 56 182320 0 180684 54 30 24 27 0 8 0 pdppl 4096 17892 0 17790 153 51 102 102 0 8 0 pvpl 32 4448052 0 4426737 577 385 192 269 0 265 0 pmappl 224 8941 0 8867 7 2 5 5 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 566 0 132 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(fffffd80773f0100,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd80773f0100,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166ec8,ffff800021166ed4,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166ec8,ffff800021166ed4,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166ec8,ffff800021166ed4,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd807d6fc500) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd807d6fc500,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd807d6fc500) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167008) 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