panic: unhandled af 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 72476 65379 0 0 0 1 syz-executor.0 *197381 65379 0 0 0x4000000 0K syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff824100bc) at panic+0x15c sys/kern/subr_prf.c:207 unhandled_af(0) at unhandled_af+0x16 pf_addrcpy(ffff800020ec2fb0,ffff800000b6e778,0) at pf_addrcpy+0x99 sys/net/pf.c:409 pf_map_addr(0,ffff800000b6e530,ffff800020ec3278,ffff800020ec2fb0,ffff800020ec2ec0,ffff800020ec3118) at pf_map_addr+0x3f7 sys/net/pf_lb.c:393 pf_get_sport(ffff800020ec3260,ffff800000b6e530,ffff800020ec2fb0,ffff800020ec2fd6,0,0) at pf_get_sport+0xc7 sys/net/pf_lb.c:159 pf_get_transaddr_af(ffff800000b6e530,ffff800020ec3260,ffff800020ec3118) at pf_get_transaddr_af+0x154 sys/net/pf_lb.c:733 pf_get_transaddr(ffff800000b6e530,ffff800020ec3260,ffff800020ec3118,ffff800020ec3140) at pf_get_transaddr+0x89 sys/net/pf_lb.c:657 pf_test_rule(ffff800020ec3260,ffff800020ec3350,ffff800020ec3360,ffff800020ec3340,ffff800020ec3328,3) at pf_test_rule+0x495 sys/net/pf.c:3822 pf_test(18,2,ffff800000b13800,ffff800020ec34f0) at pf_test+0x1a35 sys/net/pf.c:7025 ip6_output(fffffd8063a80b00,ffffffff827dca88,0,1,ffff800020ec3588,0) at ip6_output+0x115c sys/netinet6/ip6_output.c:618 mld6_sendpkt(ffff800000b26b00,83,0) at mld6_sendpkt+0x2da sys/netinet6/mld6.c:465 mld6_start_listening(ffff800000b26b00) at mld6_start_listening+0x8e sys/netinet6/mld6.c:136 in6_addmulti(ffff800020ec38f0,ffff800000b13800,ffff800020ec3978) at in6_addmulti+0x25e sys/netinet6/in6.c:1073 end trace frame: 0xffff800020ec39d0, count: 0 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 unhandled af 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff824100bc) at panic+0x15c sys/kern/subr_prf.c:207 unhandled_af(0) at unhandled_af+0x16 pf_addrcpy(ffff800020ec2fb0,ffff800000b6e778,0) at pf_addrcpy+0x99 sys/net/pf.c:409 pf_map_addr(0,ffff800000b6e530,ffff800020ec3278,ffff800020ec2fb0,ffff800020ec2ec0,ffff800020ec3118) at pf_map_addr+0x3f7 sys/net/pf_lb.c:393 pf_get_sport(ffff800020ec3260,ffff800000b6e530,ffff800020ec2fb0,ffff800020ec2fd6,0,0) at pf_get_sport+0xc7 sys/net/pf_lb.c:159 pf_get_transaddr_af(ffff800000b6e530,ffff800020ec3260,ffff800020ec3118) at pf_get_transaddr_af+0x154 sys/net/pf_lb.c:733 pf_get_transaddr(ffff800000b6e530,ffff800020ec3260,ffff800020ec3118,ffff800020ec3140) at pf_get_transaddr+0x89 sys/net/pf_lb.c:657 pf_test_rule(ffff800020ec3260,ffff800020ec3350,ffff800020ec3360,ffff800020ec3340,ffff800020ec3328,3) at pf_test_rule+0x495 sys/net/pf.c:3822 pf_test(18,2,ffff800000b13800,ffff800020ec34f0) at pf_test+0x1a35 sys/net/pf.c:7025 ip6_output(fffffd8063a80b00,ffffffff827dca88,0,1,ffff800020ec3588,0) at ip6_output+0x115c sys/netinet6/ip6_output.c:618 mld6_sendpkt(ffff800000b26b00,83,0) at mld6_sendpkt+0x2da sys/netinet6/mld6.c:465 mld6_start_listening(ffff800000b26b00) at mld6_start_listening+0x8e sys/netinet6/mld6.c:136 in6_addmulti(ffff800020ec38f0,ffff800000b13800,ffff800020ec3978) at in6_addmulti+0x25e sys/netinet6/in6.c:1073 in6_update_ifa(ffff800000b13800,ffff800020ec3b90,0) at in6_update_ifa+0x1530 in6_joingroup sys/netinet6/in6.c:1142 [inline] in6_update_ifa(ffff800000b13800,ffff800020ec3b90,0) at in6_update_ifa+0x1530 sys/netinet6/in6.c:764 in6_ioctl_change_ifaddr(8080691a,ffff800020ec3b90,ffff800000b13800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd80671294c8,8080691a,ffff800020ec3b90,ffff800020e08768) at ifioctl+0xe70 sys/net/if.c:2282 soo_ioctl(fffffd80685cf440,8080691a,ffff800020ec3b90,ffff800020e08768) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020e08768,ffff800020ec3ca8,ffff800020ec3cf0) at sys_ioctl+0x4a5 syscall(ffff800020ec3d70) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ec3d70) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xacda44bc620, count: -21 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020ec2c50 rbx 0xffff800020ec2d00 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff812843bf kprintf+0x16f r9 0x1 r10 0x2 r11 0x5338aa0189a45f1e r12 0x3000000008 r13 0xffff800020ec2c60 r14 0x100 r15 0x1 rip 0xffffffff822e63c8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020ec2c40 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=197381 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e08eb8,0xffffffff828cb8a0 process=0xffff800021f59b20 user=0xffff800020ebe000, vmspace=0xfffffd807f0005c0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 65379 72476 85145 0 7 0 syz-executor.0 *65379 197381 85145 0 7 0x4000000 syz-executor.0 85145 102332 8948 0 2 0x2 syz-executor.0 9611 370578 0 0 3 0x14280 nfsidl nfsio 19406 511693 0 0 3 0x14280 nfsidl nfsio 53626 463744 0 0 3 0x14280 nfsidl nfsio 42685 21475 0 0 3 0x14280 nfsidl nfsio 48632 435950 0 0 3 0x14280 nfsidl nfsio 85865 194318 0 0 3 0x14280 nfsidl nfsio 88075 259696 0 0 3 0x14280 nfsidl nfsio 21058 475688 0 0 3 0x14280 nfsidl nfsio 58411 308444 0 0 3 0x14280 nfsidl nfsio 55391 51291 0 0 3 0x14280 nfsidl nfsio 63559 229926 0 0 3 0x14280 nfsidl nfsio 80057 209929 0 0 3 0x14280 nfsidl nfsio 63940 418413 0 0 3 0x14280 nfsidl nfsio 84273 519506 0 0 3 0x14280 nfsidl nfsio 15259 361808 0 0 3 0x14280 nfsidl nfsio 41794 483238 0 0 3 0x14280 nfsidl nfsio 93934 381605 0 0 3 0x14280 nfsidl nfsio 56791 110976 0 0 3 0x14280 nfsidl nfsio 14364 515467 0 0 3 0x14280 nfsidl nfsio 41921 370737 0 0 3 0x14280 nfsidl nfsio 83355 14724 0 0 3 0x14200 bored sosplice 5171 340339 0 0 3 0x14200 acct acct 54999 355028 8948 0 3 0x82 piperd syz-executor.1 8948 28192 45853 0 3 0x82 thrsleep syz-fuzzer 8948 352507 45853 0 3 0x4000082 nanosleep syz-fuzzer 8948 178377 45853 0 2 0x4000002 syz-fuzzer 8948 357600 45853 0 3 0x4000082 thrsleep syz-fuzzer 8948 101731 45853 0 3 0x4000082 thrsleep syz-fuzzer 8948 470551 45853 0 3 0x4000082 thrsleep syz-fuzzer 8948 487880 45853 0 3 0x4000082 thrsleep syz-fuzzer 8948 243187 45853 0 3 0x4000082 thrsleep syz-fuzzer 8948 245752 45853 0 3 0x4000082 thrsleep syz-fuzzer 8948 513728 45853 0 3 0x4000082 kqread syz-fuzzer 45853 270952 48534 0 3 0x10008a pause ksh 48534 160563 52044 0 3 0x92 select sshd 54083 42063 1 0 3 0x100083 ttyin getty 52044 277670 1 0 3 0x80 select sshd 93063 314821 86046 74 3 0x100092 bpf pflogd 86046 460244 1 0 3 0x80 netio pflogd 94997 254449 8776 73 3 0x100090 kqread syslogd 8776 181837 1 0 3 0x100082 netio syslogd 66558 328550 1 77 3 0x100090 poll dhclient 99879 190610 1 0 3 0x80 poll dhclient 42963 82183 0 0 3 0x14200 bored smr 45703 55422 0 0 2 0x14200 zerothread 72914 176018 0 0 3 0x14200 aiodoned aiodoned 11517 452503 0 0 3 0x14200 syncer update 19177 496849 0 0 3 0x14200 cleaner cleaner 16470 179028 0 0 3 0x14200 reaper reaper 9044 235439 0 0 3 0x14200 pgdaemon pagedaemon 69366 257781 0 0 3 0x14200 bored crynlk 10421 473471 0 0 3 0x14200 bored crypto 28163 413109 0 0 3 0x40014200 acpi0 acpi0 20290 246907 0 0 3 0x40014200 idle1 6106 521497 0 0 3 0x14200 bored softnet 22082 272094 0 0 3 0x14200 bored systqmp 50720 411715 0 0 3 0x14200 bored systq 75508 448614 0 0 3 0x40014200 bored softclock 69815 349347 0 0 3 0x40014200 idle0 1 410194 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 65379 (syz-executor.0) thread 0xffff800020e08768 (197381) exclusive rwlock netlock r = 0 (0xffffffff827a4a28) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 in6_ioctl_change_ifaddr+0x155 sys/netinet6/in6.c:295 #2 ifioctl+0xe70 sys/net/if.c:2282 #3 soo_ioctl+0x27c sys/kern/sys_socket.c:138 #4 sys_ioctl+0x4a5 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828b1058) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 soo_ioctl+0x26a sys/kern/sys_socket.c:138 #2 sys_ioctl+0x4a5 #3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #4 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9531 6421K 6807K 78643K 11204 0 pcb 13 8K 8K 78643K 101 0 rtable 124 7K 9K 78643K 464 0 ifaddr 88 17K 17K 78643K 169 0 counters 43 33K 34K 78643K 63 0 ioctlops 0 0K 4K 78643K 1529 0 iov 0 0K 16K 78643K 370 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1936 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 120 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 708 0 sigio 0 0K 0K 78643K 11 0 proc 63 63K 95K 78643K 517 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 23 0 in_multi 73 4K 4K 78643K 163 0 ether_multi 1 0K 0K 78643K 13 0 mrt 0 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 583 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 126 23K 31K 78643K 3626 0 UVM aobj 20 2K 2K 78643K 24 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 56 0 NDP 16 0K 0K 78643K 42 0 temp 119 3862K 3931K 78643K 14963 0 kqueue 3 4K 10K 78643K 26 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 arp 64 9 0 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 37 0 35 1 0 1 1 0 8 0 rtentry 112 92 0 46 2 0 2 2 0 8 0 unpcb 120 1034 0 1023 1 0 1 1 0 8 0 syncache 264 8 0 8 2 2 0 1 0 8 0 sackhl 24 1 0 0 1 0 1 1 0 8 0 tcpqe 32 1195 0 1195 1 1 0 1 0 8 0 tcpcb 544 154 0 150 1 0 1 1 0 8 0 inpcb 296 1977 0 1967 8 6 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 24 0 16 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1128 4 0 4 2 2 0 1 0 8 0 pffrag 232 3 0 3 1 1 0 1 0 482 0 pffrnode 88 3 0 3 1 1 0 1 0 8 0 pffrent 40 135 0 135 1 1 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrke_plain 160 9 0 9 1 1 0 1 0 8 0 pfrktable 1344 27 0 23 1 0 1 1 0 8 0 pfstitem 24 38 0 36 1 0 1 1 0 8 0 pfstkey 112 38 0 36 1 0 1 1 0 8 0 pfstate 328 38 0 36 3 2 1 3 0 8 0 pfrule 1360 32 0 19 3 1 2 2 0 8 0 art_heap8 4096 3 0 2 3 2 1 3 0 8 0 art_heap4 256 495 0 299 15 1 14 15 0 8 0 art_table 32 498 0 301 2 0 2 2 0 8 0 art_node 16 91 0 51 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 33 1 0 1 1 0 8 0 semapl 112 118 0 108 1 0 1 1 0 8 0 shmpl 112 22 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2767 0 1362 89 0 89 89 0 8 0 ffsino 272 2767 0 1362 95 1 94 94 0 8 0 nchpl 144 4007 0 2408 60 0 60 60 0 8 0 rtmask 32 12 0 12 1 1 0 1 0 8 0 uvmvnodes 72 3204 0 0 59 0 59 59 0 8 0 vnodes 208 3204 0 0 169 0 169 169 0 8 0 namei 1024 10709 0 10709 2 1 1 1 0 8 1 percpumem 16 42 0 10 1 0 1 1 0 8 0 vmpool 560 2 0 2 1 1 0 1 0 8 0 pfiaddrpl 120 11 0 7 1 0 1 1 0 8 0 scxspl 192 11212 0 11212 8 7 1 7 0 8 1 plimitpl 152 34 0 26 1 0 1 1 0 8 0 sigapl 424 942 0 889 7 1 6 7 0 8 0 futexpl 56 12403 0 12403 1 0 1 1 0 8 1 knotepl 112 111 0 92 1 0 1 1 0 8 0 kqueuepl 144 51 0 48 1 0 1 1 0 8 0 pipepl 304 156 0 146 3 2 1 2 0 8 0 fdescpl 496 905 0 889 3 0 3 3 0 8 0 filepl 152 6637 0 6533 7 2 5 6 0 8 1 lockfpl 104 99 0 98 1 0 1 1 0 8 0 lockfspl 48 37 0 36 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 397 0 386 1 0 1 1 0 8 0 ucredpl 96 377 0 367 1 0 1 1 0 8 0 zombiepl 144 889 0 889 2 1 1 1 0 8 1 processpl 984 942 0 889 8 1 7 7 0 8 0 procpl 624 2818 0 2755 6 0 6 6 0 8 1 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 7 0 7 2 1 1 1 0 8 1 sockpl 400 3051 0 3028 7 4 3 4 0 8 0 mcl64k 65536 260 0 0 33 22 11 33 0 8 1 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 186 0 0 22 0 22 22 0 8 0 mtagpl 96 31 0 0 1 0 1 1 0 8 0 mbufpl 256 406 0 0 23 0 23 23 0 8 0 bufpl 280 4835 0 133 336 0 336 336 0 8 0 anonpl 16 104304 0 88359 92 25 67 84 0 124 0 amapchunkpl 152 6050 0 5885 12 4 8 12 0 158 0 amappl16 192 4278 0 3403 66 22 44 56 0 8 0 amappl15 184 154 0 153 2 1 1 1 0 8 0 amappl14 176 27 0 20 1 0 1 1 0 8 0 amappl13 168 542 0 537 1 0 1 1 0 8 0 amappl12 160 214 0 210 1 0 1 1 0 8 0 amappl11 152 55 0 40 1 0 1 1 0 8 0 amappl10 144 181 0 173 1 0 1 1 0 8 0 amappl9 136 387 0 386 1 0 1 1 0 8 0 amappl8 128 384 0 348 2 0 2 2 0 8 0 amappl7 120 123 0 111 1 0 1 1 0 8 0 amappl6 112 26 0 20 1 0 1 1 0 8 0 amappl5 104 802 0 785 1 0 1 1 0 8 0 amappl4 96 814 0 786 1 0 1 1 0 8 0 amappl3 88 129 0 124 1 0 1 1 0 8 0 amappl2 80 6585 0 6515 2 0 2 2 0 8 0 amappl1 72 29811 0 29369 23 13 10 18 0 8 0 amappl 80 3066 0 3020 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 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 23 0 4 1 0 1 1 0 8 0 uaddrrnd 24 907 0 891 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 907 0 891 1 0 1 1 0 8 0 vmmpekpl 168 11233 0 11196 2 0 2 2 0 8 0 vmmpepl 168 117436 0 115402 142 51 91 123 0 357 0 vmsppl 368 906 0 891 2 0 2 2 0 8 0 pdppl 4096 1821 0 1782 7 2 5 6 0 8 0 pvpl 32 300886 0 281672 206 44 162 199 0 265 0 pmappl 232 906 0 891 3 2 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 317 0 36 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff824100bc) at panic+0x15c sys/kern/subr_prf.c:207 unhandled_af(0) at unhandled_af+0x16 pf_addrcpy(ffff800020ec2fb0,ffff800000b6e778,0) at pf_addrcpy+0x99 sys/net/pf.c:409 pf_map_addr(0,ffff800000b6e530,ffff800020ec3278,ffff800020ec2fb0,ffff800020ec2ec0,ffff800020ec3118) at pf_map_addr+0x3f7 sys/net/pf_lb.c:393 pf_get_sport(ffff800020ec3260,ffff800000b6e530,ffff800020ec2fb0,ffff800020ec2fd6,0,0) at pf_get_sport+0xc7 sys/net/pf_lb.c:159 pf_get_transaddr_af(ffff800000b6e530,ffff800020ec3260,ffff800020ec3118) at pf_get_transaddr_af+0x154 sys/net/pf_lb.c:733 pf_get_transaddr(ffff800000b6e530,ffff800020ec3260,ffff800020ec3118,ffff800020ec3140) at pf_get_transaddr+0x89 sys/net/pf_lb.c:657 pf_test_rule(ffff800020ec3260,ffff800020ec3350,ffff800020ec3360,ffff800020ec3340,ffff800020ec3328,3) at pf_test_rule+0x495 sys/net/pf.c:3822 pf_test(18,2,ffff800000b13800,ffff800020ec34f0) at pf_test+0x1a35 sys/net/pf.c:7025 ip6_output(fffffd8063a80b00,ffffffff827dca88,0,1,ffff800020ec3588,0) at ip6_output+0x115c sys/netinet6/ip6_output.c:618 mld6_sendpkt(ffff800000b26b00,83,0) at mld6_sendpkt+0x2da sys/netinet6/mld6.c:465 mld6_start_listening(ffff800000b26b00) at mld6_start_listening+0x8e sys/netinet6/mld6.c:136 in6_addmulti(ffff800020ec38f0,ffff800000b13800,ffff800020ec3978) at in6_addmulti+0x25e sys/netinet6/in6.c:1073 in6_update_ifa(ffff800000b13800,ffff800020ec3b90,0) at in6_update_ifa+0x1530 in6_joingroup sys/netinet6/in6.c:1142 [inline] in6_update_ifa(ffff800000b13800,ffff800020ec3b90,0) at in6_update_ifa+0x1530 sys/netinet6/in6.c:764 in6_ioctl_change_ifaddr(8080691a,ffff800020ec3b90,ffff800000b13800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd80671294c8,8080691a,ffff800020ec3b90,ffff800020e08768) at ifioctl+0xe70 sys/net/if.c:2282 soo_ioctl(fffffd80685cf440,8080691a,ffff800020ec3b90,ffff800020e08768) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020e08768,ffff800020ec3ca8,ffff800020ec3cf0) at sys_ioctl+0x4a5 syscall(ffff800020ec3d70) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ec3d70) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xacda44bc620, count: -21 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 copyout() at copyout+0x56 syscall(ffff800021ed5b80) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021ed5b80) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbde70, count: 9 ddb{1}> trace x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 copyout() at copyout+0x56 syscall(ffff800021ed5b80) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021ed5b80) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbde70, count: -6