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 *480475 95630 0 0x14000 0x200 0K softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8068349c00,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8068349c00,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167c58,ffff800021167c64,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167c58,ffff800021167c64,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167c58,ffff800021167c64,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8068205c00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8068205c00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8068205c00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167d98) 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(fffffd8068349c00,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8068349c00,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167c58,ffff800021167c64,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167c58,ffff800021167c64,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167c58,ffff800021167c64,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8068205c00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8068205c00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8068205c00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167d98) 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 0xffff8000211677f0 rbx 0 rdx 0 rcx 0x7 rax 0xffff8000211482a0 r8 0xffffffff8116ca3c nd6_ns_input+0x3bc r9 0x1 r10 0x8973d14561488635 r11 0x88725210a1fe16aa r12 0 r13 0x2 r14 0 r15 0xffff800000d6fc00 rip 0xffffffff8116f268 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021167770 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{0}> show proc PROC (softnet) pid=480475 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021148000,0xffff8000211487f0 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 33088 379696 34018 0 2 0 syz-executor.0 33088 490396 34018 0 2 0x4000000 syz-executor.0 34018 125584 48492 0 3 0x82 nanoslp syz-executor.0 27079 319841 48492 0 3 0x82 nanoslp syz-executor.1 15213 325413 0 0 3 0x14280 nfsidl nfsio 18906 117885 0 0 3 0x14280 nfsidl nfsio 38113 408744 0 0 3 0x14280 nfsidl nfsio 63362 104687 0 0 3 0x14280 nfsidl nfsio 40810 399486 0 0 3 0x14280 nfsidl nfsio 44366 489399 0 0 3 0x14280 nfsidl nfsio 39506 430783 0 0 3 0x14280 nfsidl nfsio 7224 60397 0 0 3 0x14280 nfsidl nfsio 72636 461779 0 0 3 0x14280 nfsidl nfsio 47110 522158 0 0 3 0x14280 nfsidl nfsio 1662 399650 0 0 3 0x14280 nfsidl nfsio 11523 341903 0 0 3 0x14280 nfsidl nfsio 69348 260313 0 0 3 0x14280 nfsidl nfsio 59603 411609 0 0 3 0x14280 nfsidl nfsio 73367 99755 0 0 3 0x14280 nfsidl nfsio 56134 398451 0 0 3 0x14280 nfsidl nfsio 5961 294878 0 0 3 0x14280 nfsidl nfsio 29013 378974 0 0 3 0x14280 nfsidl nfsio 99598 371757 0 0 3 0x14280 nfsidl nfsio 8910 434097 0 0 3 0x14280 nfsidl nfsio 48356 107630 0 0 3 0x14200 bored sosplice 48492 104276 17809 0 3 0x82 thrsleep syz-fuzzer 48492 296895 17809 0 3 0x4000082 thrsleep syz-fuzzer 48492 30216 17809 0 3 0x4000082 kqread syz-fuzzer 48492 84564 17809 0 3 0x4000082 thrsleep syz-fuzzer 48492 474467 17809 0 3 0x4000082 thrsleep syz-fuzzer 48492 278512 17809 0 3 0x4000082 thrsleep syz-fuzzer 48492 57757 17809 0 3 0x4000082 thrsleep syz-fuzzer 48492 444801 17809 0 3 0x4000082 thrsleep syz-fuzzer 17809 212897 78129 0 3 0x10008a sigsusp ksh 78129 122886 33988 0 3 0x9a kqread sshd 39114 462865 1 0 3 0x100083 ttyopn getty 33988 114197 1 0 3 0x88 kqread sshd 59264 467035 22514 74 3 0x100092 bpf pflogd 22514 283363 1 0 3 0x80 netio pflogd 63164 163058 12079 73 3 0x100090 kqread syslogd 12079 75343 1 0 3 0x100082 netio syslogd 68827 474065 1 0 3 0x100080 kqread resolvd 55279 116 16454 77 3 0x100092 kqread dhcpleased 86402 46043 16454 77 3 0x100092 kqread dhcpleased 16454 192589 1 0 3 0x80 kqread dhcpleased 65679 230079 0 0 3 0x14200 bored smr 35729 155575 0 0 2 0x14200 zerothread 67194 162664 0 0 3 0x14200 aiodoned aiodoned 37207 33454 0 0 3 0x14200 syncer update 7263 206547 0 0 3 0x14200 cleaner cleaner 9974 467246 0 0 3 0x14200 reaper reaper 49939 84020 0 0 3 0x14200 pgdaemon pagedaemon 13819 482620 0 0 3 0x14200 bored viomb 85521 470395 0 0 3 0x40014200 acpi0 acpi0 84242 191291 0 0 7 0x40014200 idle1 *95630 480475 0 0 7 0x14200 softnet 93974 356190 0 0 2 0x14200 systqmp 72664 4510 0 0 3 0x14200 bored systq 70976 144469 0 0 3 0x40014200 bored softclock 43726 82716 0 0 3 0x40014200 idle0 1 405772 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 95630 (softnet) thread 0xffff8000211482a0 (480475) 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 10151 6455K 7508K 78643K 98176 0 pcb 14 18K 20K 78643K 4209 0 rtable 137 22K 23K 78643K 8727 0 ifaddr 67 23K 27K 78643K 2097 0 sysctl 3 1K 1K 78643K 3 0 counters 44 34K 34K 78643K 714 0 ioctlops 0 0K 8K 78643K 8202 0 iov 0 0K 24K 78643K 2255 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1324 83K 84K 78643K 19885 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 159 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 17 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 27764 0 sigio 0 0K 0K 78643K 2255 0 proc 72 87K 112K 78643K 2445 0 subproc 26 1K 1K 78643K 572 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2629 0 in_multi 34 2K 2K 78643K 2667 0 ether_multi 1 0K 0K 78643K 739 0 mrt 1 0K 0K 78643K 56 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 181 811K 811K 78643K 181 0 exec 0 0K 2K 78643K 4796 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 520 1331K 1334K 78643K 361658 0 UVM aobj 131 8K 8K 78643K 135 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 2202 0 NDP 8 0K 0K 78643K 489 0 temp 105 4236K 8310K 78643K 176182 0 kqueue 12 18K 25K 78643K 1100 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 6624 0 6621 76 75 1 5 0 8 0 rtentry 112 995 0 961 4 2 2 2 0 8 0 unpcb 128 14314 0 14299 147 144 3 9 0 8 2 syncache 296 7 0 7 2 2 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 736 9792 0 9786 335 333 2 17 0 8 0 arp 120 127 0 121 1 0 1 1 0 8 0 inpcb 304 27276 0 27265 379 375 4 19 0 8 3 rttmr 72 4 0 4 1 1 0 1 0 8 0 nd6 48 208 0 202 2 1 1 1 0 8 0 pkpcb 40 179 0 179 15 15 0 1 0 8 0 kcovpl 48 44 0 42 1 0 1 1 0 8 0 ppxss 1248 84 0 84 23 23 0 1 0 8 0 pfstscr 40 52 0 52 8 8 0 1 0 8 0 pffrag 232 173 0 172 20 19 1 1 0 482 0 pffrnode 88 173 0 172 20 19 1 1 0 8 0 pffrent 40 6261 0 6260 22 21 1 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 525 0 504 3 1 2 3 0 8 0 pfpktdelay 88 375 0 375 8 8 0 8 0 8 0 pftag 88 17 0 14 1 0 1 1 0 8 0 pfqueue 264 9 0 3 1 0 1 1 0 8 0 pfstitem 24 41 0 39 1 0 1 1 0 8 0 pfstkey 112 91 0 89 1 0 1 1 0 8 0 pfstate 320 58 0 56 3 2 1 3 0 8 0 pfrule 1360 3703 0 3556 17 4 13 13 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 5625 0 5441 64 52 12 12 0 8 0 art_table 32 5626 0 5441 8 6 2 2 0 8 0 art_node 16 950 0 918 1 0 1 1 0 8 0 sysvmsgpl 40 56 0 16 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 36890 0 35432 93 1 92 92 0 8 0 ffsino 272 36890 0 35432 98 0 98 98 0 8 0 nchpl 144 72517 0 70915 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 261842 0 261842 14 13 1 1 0 8 1 percpumem 16 369 0 335 1 0 1 1 0 8 0 vcpupl 2048 338 0 0 43 0 43 43 0 8 0 vmpool 560 397 0 59 26 1 25 25 0 8 0 pfiaddrpl 120 1485 0 1408 3 0 3 3 0 8 0 scsiplug 72 23 0 23 6 6 0 1 0 8 0 scxspl 216 218592 0 218592 46 45 1 8 0 8 1 plimitpl 152 2794 0 2785 1 0 1 1 0 8 0 sigapl 424 27921 0 27868 7 0 7 7 0 8 0 futexpl 64 209524 0 209524 15 14 1 1 0 8 1 knotepl 112 209 0 0 3 0 3 3 0 8 0 kqueuepl 216 5768 0 5757 125 124 1 8 0 8 0 pipepl 336 7296 0 7286 207 205 2 11 0 8 0 fdescpl 496 27885 0 27867 3 0 3 3 0 8 0 filepl 152 198851 0 198741 338 330 8 14 0 8 3 lockfpl 104 8232 0 8230 12 11 1 2 0 8 0 lockfspl 48 3032 0 3030 1 0 1 1 0 8 0 sessionpl 144 60 0 49 1 0 1 1 0 8 0 pgrppl 48 191 0 180 1 0 1 1 0 8 0 ucredpl 96 22878 0 22865 1 0 1 1 0 8 0 zombiepl 144 27868 0 27867 7 6 1 1 0 8 0 processpl 1064 27921 0 27867 4 0 4 4 0 8 0 procpl 672 84133 0 84071 60 54 6 7 0 8 0 srpgc 96 20 0 20 9 9 0 1 0 8 0 sosppl 168 147 0 147 35 35 0 1 0 8 0 sockpl 480 48455 0 48426 953 941 12 34 0 8 8 mcl64k 65536 34 0 0 4 1 3 3 0 8 0 mcl16k 16384 38 0 0 4 2 2 3 0 8 0 mcl12k 12288 69 0 0 3 0 3 3 0 8 0 mcl9k 9216 33 0 0 2 0 2 2 0 8 0 mcl8k 8192 70 0 0 6 3 3 3 0 8 0 mcl4k 4096 41 0 0 3 0 3 3 0 8 0 mcl2k2 2112 16 0 0 2 0 2 2 0 8 0 mcl2k 2048 608 0 0 49 2 47 49 0 8 0 mtagpl 96 1284 0 0 9 2 7 9 0 8 0 mbufpl 256 13537 0 0 845 0 845 845 0 8 0 bufpl 280 44759 0 38430 453 0 453 453 0 8 0 anonpl 24 8058319 0 8035496 437 282 155 176 0 186 0 amapchunkpl 152 883036 0 882388 166 137 29 41 0 158 0 amappl16 200 70715 0 69642 190 128 62 73 0 8 0 amappl15 192 6075 0 6069 1 0 1 1 0 8 0 amappl14 184 4374 0 4372 1 0 1 1 0 8 0 amappl13 176 2287 0 2285 1 0 1 1 0 8 0 amappl12 168 1265 0 1262 1 0 1 1 0 8 0 amappl11 160 1134 0 1116 1 0 1 1 0 8 0 amappl10 152 5295 0 5292 1 0 1 1 0 8 0 amappl9 144 4510 0 4508 1 0 1 1 0 8 0 amappl8 136 7563 0 7482 3 0 3 3 0 8 0 amappl7 128 6476 0 6468 1 0 1 1 0 8 0 amappl6 120 4497 0 4484 1 0 1 1 0 8 0 amappl5 112 28753 0 28719 2 0 2 2 0 8 0 amappl4 104 6545 0 6509 4 2 2 2 0 8 0 amappl3 96 3586 0 3554 1 0 1 1 0 8 0 amappl2 88 32125 0 32072 3 1 2 2 0 8 0 amappl1 80 485097 0 484651 15 5 10 13 0 8 0 amappl 88 360035 0 359773 7 0 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 64 134 0 4 3 0 3 3 0 8 0 uaddrrnd 24 28282 0 27926 4 1 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 28282 0 27926 4 1 3 3 0 8 0 vmmpekpl 168 192566 0 192520 3 0 3 3 0 8 0 vmmpepl 168 2526997 0 2523909 831 663 168 168 0 357 27 vmsppl 368 28281 0 27926 34 1 33 33 0 8 0 rwobjpl 56 617563 0 615560 87 58 29 33 0 8 0 pdppl 4096 56572 0 56190 456 71 385 386 0 8 3 pvpl 32 13344465 0 13324762 804 623 181 239 0 265 0 pmappl 224 28281 0 27926 23 2 21 22 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 2279 0 690 48 2 46 46 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(fffffd8068349c00,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8068349c00,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167c58,ffff800021167c64,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167c58,ffff800021167c64,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167c58,ffff800021167c64,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8068205c00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8068205c00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8068205c00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167d98) 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}> ae No such command