uvm_fault(0xffffffff829b12d0, 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 *108918 31996 0 0x14000 0x200 0K softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8071a3a500,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8071a3a500,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167378,ffff800021167384,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167378,ffff800021167384,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167378,ffff800021167384,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8065de5d00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8065de5d00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8065de5d00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff8000211674b8) 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(0xffffffff829b12d0, 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(fffffd8071a3a500,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8071a3a500,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167378,ffff800021167384,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167378,ffff800021167384,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167378,ffff800021167384,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8065de5d00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8065de5d00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8065de5d00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff8000211674b8) 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 0xffff800021166f10 rbx 0 rdx 0 rcx 0x7 rax 0xffff800021148540 r8 0xffffffff8221b7ac nd6_ns_input+0x3bc r9 0x1 r10 0x8e4746a36bbd7644 r11 0x953db2e9b247cf20 r12 0 r13 0x2 r14 0 r15 0xffff800000b10100 rip 0xffffffff8221dfd8 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021166e90 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{0}> show proc PROC (softnet) pid=108918 stat=onproc flags process=14000 proc=200 pri=32, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000211487e0,0xffff8000211482b0 process=0xffff8000ffffc430 user=0xffff800021162000, vmspace=0xffffffff829b12d0 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 31206 519520 80652 0 2 0 syz-executor.0 31206 506451 80652 0 2 0x4000000 syz-executor.0 61052 80873 56171 0 2 0 syz-executor.1 61052 395313 56171 0 3 0x4000080 fsleep syz-executor.1 80652 5730 75432 0 3 0x82 nanoslp syz-executor.0 56171 377297 75432 0 3 0x82 nanoslp syz-executor.1 38042 455651 0 0 3 0x14200 acct acct 56222 521377 0 0 3 0x14280 nfsidl nfsio 76403 319856 0 0 3 0x14280 nfsidl nfsio 97351 293280 0 0 3 0x14280 nfsidl nfsio 4619 405368 0 0 3 0x14280 nfsidl nfsio 43202 384391 0 0 3 0x14280 nfsidl nfsio 33525 489713 0 0 3 0x14280 nfsidl nfsio 39761 71534 0 0 3 0x14280 nfsidl nfsio 48979 258433 0 0 3 0x14280 nfsidl nfsio 40624 427453 0 0 3 0x14280 nfsidl nfsio 32468 79484 0 0 3 0x14280 nfsidl nfsio 16242 416525 0 0 3 0x14280 nfsidl nfsio 92760 19 0 0 3 0x14280 nfsidl nfsio 9976 306719 0 0 3 0x14280 nfsidl nfsio 81315 311546 0 0 3 0x14280 nfsidl nfsio 32133 144193 0 0 3 0x14280 nfsidl nfsio 75800 285348 0 0 3 0x14280 nfsidl nfsio 57654 237630 0 0 3 0x14280 nfsidl nfsio 61326 123852 0 0 3 0x14280 nfsidl nfsio 58121 450448 0 0 3 0x14280 nfsidl nfsio 4993 26201 0 0 3 0x14280 nfsidl nfsio 20111 507457 0 0 3 0x14200 bored sosplice 75432 114964 68862 0 3 0x82 thrsleep syz-fuzzer 75432 199110 68862 0 2 0x4000482 syz-fuzzer 75432 250598 68862 0 3 0x4000082 thrsleep syz-fuzzer 75432 172937 68862 0 2 0x4000482 syz-fuzzer 75432 30153 68862 0 3 0x4000082 thrsleep syz-fuzzer 75432 76114 68862 0 3 0x4000082 thrsleep syz-fuzzer 75432 267167 68862 0 3 0x4000082 thrsleep syz-fuzzer 75432 457948 68862 0 3 0x4000082 thrsleep syz-fuzzer 68862 340087 3494 0 3 0x10008a sigsusp ksh 3494 507185 97739 0 3 0x9a kqread sshd 7583 145302 1 0 3 0x100083 ttyin getty 97739 52366 1 0 3 0x88 kqread sshd 64237 247312 15918 74 3 0x100092 bpf pflogd 15918 311198 1 0 3 0x80 netio pflogd 84017 103845 97902 73 3 0x100090 kqread syslogd 97902 20676 1 0 3 0x100082 netio syslogd 29778 222995 1 0 3 0x100080 kqread resolvd 56764 511570 0 0 3 0x14200 bored smr 83922 12447 0 0 2 0x14200 zerothread 71043 173355 0 0 3 0x14200 aiodoned aiodoned 42891 198263 0 0 3 0x14200 syncer update 85957 321218 0 0 3 0x14200 cleaner cleaner 74074 492580 0 0 3 0x14200 reaper reaper 55642 499660 0 0 3 0x14200 pgdaemon pagedaemon 23962 288563 0 0 3 0x14200 bored viomb 97805 404610 0 0 3 0x40014200 acpi0 acpi0 74799 279049 0 0 7 0x40014200 idle1 *31996 108918 0 0 7 0x14200 softnet 50764 483478 0 0 2 0x14200 systqmp 6667 183442 0 0 3 0x14200 bored systq 92109 410581 0 0 2 0x40014200 softclock 40711 177446 0 0 3 0x40014200 idle0 1 367611 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 31996 (softnet) thread 0xffff800021148540 (108918) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8294f760) #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 (0xffffffff827efb90) #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 10147 6460K 7090K 78643K 14484 0 pcb 14 8K 8K 78643K 2137 0 rtable 174 26K 28K 78643K 5506 0 ifaddr 84 27K 30K 78643K 2066 0 sysctl 3 1K 3K 78643K 15 0 counters 46 34K 35K 78643K 732 0 ioctlops 0 0K 4K 78643K 4195 0 iov 0 0K 24K 78643K 1383 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1302 82K 82K 78643K 6834 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 182 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 1872 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 25K 78643K 19908 0 sigio 0 0K 0K 78643K 110 0 proc 66 63K 112K 78643K 3686 0 subproc 66 4K 6K 78643K 2982 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 5027 0 in_multi 38 2K 2K 78643K 2480 0 ether_multi 1 0K 0K 78643K 294 0 mrt 2 0K 0K 78643K 92 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 139 625K 625K 78643K 139 0 exec 0 0K 2K 78643K 3904 0 pfkey data 0 0K 1K 78643K 20 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 627 1761K 1762K 78643K 236168 0 UVM aobj 131 7K 7K 78643K 153 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 3384 0 NDP 10 0K 0K 78643K 658 0 temp 96 4208K 8304K 78643K 507893 0 kqueue 6 10K 32K 78643K 1387 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 1177 0 1176 1 0 1 1 0 8 0 rtentry 112 1850 0 1808 3 1 2 2 0 8 0 unpcb 128 7465 0 7455 6 5 1 2 0 8 0 syncache 296 51 0 51 20 20 0 1 0 8 0 tcpqe 32 27 108 27 2 2 0 1 0 8 0 tcpcb 736 8814 0 8798 40 38 2 5 0 8 0 arp 120 249 0 243 1 0 1 1 0 8 0 inpcb 304 28167 0 28159 27 26 1 3 0 8 0 rttmr 72 17 0 17 13 13 0 1 0 8 0 nd6 48 477 0 467 3 2 1 1 0 8 0 pkpcb 40 118 0 118 45 45 0 1 0 8 0 kcovpl 48 90 0 88 1 0 1 1 0 8 0 ppxss 1248 92 0 92 51 51 0 1 0 8 0 pfstscr 40 27 0 27 7 7 0 1 0 8 0 pffrag 232 223 0 222 35 34 1 1 0 482 0 pffrnode 88 222 0 221 35 34 1 1 0 8 0 pffrent 40 3468 0 3467 37 36 1 1 0 8 0 pfosfp 40 1430 0 1429 6 5 1 5 0 8 0 pfosfpen 112 1430 0 1429 22 21 1 21 0 8 0 pfrktable 1344 203 0 175 6 3 3 3 0 8 0 pftag 88 12 0 8 2 1 1 1 0 8 0 pfqueue 264 3 0 0 1 0 1 1 0 8 0 pfstitem 24 31 0 29 1 0 1 1 0 8 0 pfstkey 112 51 0 49 1 0 1 1 0 8 0 pfstate 320 36 0 34 2 1 1 2 0 8 0 pfsrctr 152 41 0 41 2 2 0 1 0 8 0 pfrule 1360 487 0 381 14 5 9 9 0 8 0 art_heap8 4096 15 0 14 10 9 1 3 0 8 0 art_heap4 256 9558 0 9302 105 87 18 19 0 8 0 art_table 32 9573 0 9316 5 2 3 3 0 8 0 art_node 16 1845 0 1807 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 12 1 0 1 1 0 8 0 semapl 112 1866 0 1856 1 0 1 1 0 8 0 shmpl 112 150 0 22 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 26505 0 25051 94 2 92 92 0 8 0 ffsino 272 26505 0 25051 100 2 98 98 0 8 0 nchpl 144 52906 0 52443 61 42 19 61 0 8 0 uvmvnodes 72 6174 0 0 113 0 113 113 0 8 0 vnodes 224 6174 0 0 364 0 364 364 0 8 0 namei 1024 168784 0 168784 30 29 1 1 0 8 1 percpumem 16 378 0 343 1 0 1 1 0 8 0 vcpupl 2048 176 0 2 22 0 22 22 0 8 0 vmpool 560 235 0 61 18 5 13 13 0 8 0 pfiaddrpl 120 78 0 42 3 1 2 2 0 8 0 scsiplug 72 18 0 18 16 16 0 1 0 8 0 scxspl 216 200163 0 200163 51 50 1 8 0 8 1 plimitpl 152 1306 0 1298 1 0 1 1 0 8 0 sigapl 424 19967 0 19915 11 5 6 7 0 8 0 futexpl 64 318982 0 318981 30 29 1 1 0 8 0 knotepl 112 346 0 0 3 0 3 3 0 8 0 kqueuepl 216 3622 0 3614 2 1 1 2 0 8 0 pipepl 336 3099 0 3089 30 28 2 2 0 8 0 fdescpl 496 19885 0 19869 3 0 3 3 0 8 0 filepl 152 117259 0 117125 28 22 6 8 0 8 0 lockfpl 104 4043 0 4042 1 0 1 1 0 8 0 lockfspl 48 1232 0 1231 1 0 1 1 0 8 0 sessionpl 144 100 0 90 1 0 1 1 0 8 0 pgrppl 48 182 0 172 1 0 1 1 0 8 0 ucredpl 96 15749 0 15734 1 0 1 1 0 8 0 zombiepl 144 19915 0 19915 8 7 1 1 0 8 1 processpl 1072 19967 0 19915 5 1 4 4 0 8 0 procpl 672 45280 0 45219 8 2 6 6 0 8 0 srpgc 96 24 0 24 12 12 0 1 0 8 0 sosppl 168 240 0 240 67 67 0 1 0 8 0 sockpl 480 37015 0 36996 67 64 3 8 0 8 0 mcl64k 65536 24 0 0 3 1 2 3 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 18 0 0 2 0 2 2 0 8 0 mcl8k 8192 31 0 0 4 0 4 4 0 8 0 mcl4k 4096 15 0 0 2 0 2 2 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 578 0 0 55 3 52 52 0 8 0 mtagpl 96 17 0 0 1 0 1 1 0 8 0 mbufpl 256 2647 0 0 66 2 64 64 0 8 0 bufpl 280 48748 0 42422 453 0 453 453 0 8 0 anonpl 24 5649511 0 5632129 590 477 113 138 0 186 0 amapchunkpl 152 579161 0 578471 388 360 28 41 0 158 0 amappl16 200 53579 0 52885 511 474 37 50 0 8 0 amappl15 192 2388 0 2381 1 0 1 1 0 8 0 amappl14 184 2301 0 2297 1 0 1 1 0 8 0 amappl13 176 3069 0 3068 1 0 1 1 0 8 0 amappl12 168 2663 0 2660 1 0 1 1 0 8 0 amappl11 160 3164 0 3152 1 0 1 1 0 8 0 amappl10 152 1782 0 1777 1 0 1 1 0 8 0 amappl9 144 2648 0 2648 10 10 0 1 0 8 0 amappl8 136 4991 0 4882 5 1 4 4 0 8 0 amappl7 128 3304 0 3295 1 0 1 1 0 8 0 amappl6 120 2807 0 2793 1 0 1 1 0 8 0 amappl5 112 16202 0 16176 1 0 1 1 0 8 0 amappl4 104 8127 0 8100 1 0 1 1 0 8 0 amappl3 96 5125 0 5099 1 0 1 1 0 8 0 amappl2 88 24541 0 24473 5 3 2 2 0 8 0 amappl1 80 326246 0 325829 14 3 11 13 0 8 0 amappl 88 233888 0 233585 8 1 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 64 152 0 22 3 0 3 3 0 8 0 uaddrrnd 24 20120 0 19930 3 1 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 20120 0 19930 3 1 2 2 0 8 0 vmmpekpl 168 104938 0 104881 3 0 3 3 0 8 0 vmmpepl 168 1793215 0 1790873 1137 1030 107 136 0 357 0 vmsppl 368 20119 0 19930 25 7 18 18 0 8 0 rwobjpl 56 404079 0 402438 137 113 24 27 0 8 0 pdppl 4096 40248 0 40034 340 126 214 214 0 8 0 pvpl 32 10186747 0 10165404 1182 1000 182 243 0 265 3 pmappl 224 20119 0 19930 15 3 12 12 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 947 0 341 19 1 18 18 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(fffffd8071a3a500,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8071a3a500,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021167378,ffff800021167384,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021167378,ffff800021167384,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021167378,ffff800021167384,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd8065de5d00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd8065de5d00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd8065de5d00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff8000211674b8) 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