kernel: protection fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace in_delmulti(bf3fffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a4d200) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000a20000) at in_ifdetach+0x74 sys/netinet/in.c:969 if_detach(ffff800000a20000) at if_detach+0x140 sys/net/if.c:1151 tun_clone_destroy(ffff800000a20000) at tun_clone_destroy+0x179 sys/net/if_tun.c:312 spec_close(ffff800021ba8d60) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e1e05b8,7,fffffd807f7c68a0,ffff800020ac0780) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd8065dc50b0,ffff800020ac0780) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8065dc50b0,ffff800020ac0780) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:610 fdrop(fffffd8065dc50b0,ffff800020ac0780) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd8065dc50b0,ffff800020ac0780) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020ac0780) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020ac0780,19,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff800020ac0780,19) at postsig+0x4e3 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff800020ac0780,19) at postsig+0x4e3 sys/kern/kern_sig.c:1431 userret(ffff800020ac0780) at userret+0x199 sys/kern/kern_sig.c:1889 syscall(ffff800021ba91e0) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:115 [inline] syscall(ffff800021ba91e0) at syscall+0x55f sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffebd40, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800021ba8b90 rbx 0 rdx 0xffff800020ac0780 rcx 0 rax 0 r8 0xffffffff81342423 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0xc79a39697bd39e2f r12 0 r13 0x3 r14 0xbf3fffffffffffff r15 0x1 rip 0xffffffff81eee24d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021ba8b30 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=307820 stat=onproc flags process=a proc=2000 pri=17, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020ac0508,0xffff800020ac13e8 process=0xffff800020aec380 user=0xffff800021ba4000, vmspace=0xfffffd8069032740 estcpu=36, cpticks=3, pctcpu=0.19 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 82100 88447 47749 0 3 0x80 nanosleep syz-executor.1 82100 262485 47749 0 3 0x4000080 netcon2 syz-executor.1 96022 320399 1 0 3 0x82 nanosleep getty 47749 484728 97128 0 2 0x2 syz-executor.1 12968 29137 0 0 3 0x14200 bored sosplice 97128 45991 51853 0 3 0x82 thrsleep syz-fuzzer 97128 298399 51853 0 3 0x4000082 nanosleep syz-fuzzer 97128 371997 51853 0 7 0x4000002 syz-fuzzer 97128 140707 51853 0 3 0x4000082 thrsleep syz-fuzzer 97128 319703 51853 0 3 0x4000082 thrsleep syz-fuzzer 97128 424079 51853 0 3 0x4000082 thrsleep syz-fuzzer 97128 474022 51853 0 3 0x4000082 thrsleep syz-fuzzer 97128 319665 51853 0 3 0x4000082 thrsleep syz-fuzzer 97128 258811 51853 0 2 0x4000082 syz-fuzzer 97128 92200 51853 0 2 0x4000002 syz-fuzzer 51853 65788 98109 0 3 0x10008a pause ksh 98109 447912 71864 0 3 0x92 select sshd 71864 123236 1 0 3 0x80 select sshd 86191 64648 18313 74 3 0x100092 bpf pflogd 18313 35305 1 0 3 0x80 netio pflogd 51434 168139 61448 73 3 0x100090 kqread syslogd 61448 505524 1 0 3 0x100082 netio syslogd 14759 327667 1 77 2 0x100090 dhclient 42945 210086 1 0 3 0x80 poll dhclient 57993 277363 0 0 2 0x14200 zerothread 51745 310327 0 0 3 0x14200 aiodoned aiodoned 75955 370730 0 0 3 0x14200 syncer update 87926 19869 0 0 3 0x14200 cleaner cleaner 19801 151348 0 0 3 0x14200 reaper reaper 70731 159297 0 0 3 0x14200 pgdaemon pagedaemon 15318 259529 0 0 3 0x14200 bored crynlk 16261 13991 0 0 3 0x14200 bored crypto 89309 523475 0 0 3 0x40014200 acpi0 acpi0 19135 455515 0 0 3 0x40014200 idle1 43932 439607 0 0 2 0x14200 softnet 51138 57493 0 0 2 0x14200 systqmp 62332 121263 0 0 3 0x14200 bored systq 13253 273279 0 0 3 0x40014200 bored softclock 58794 387995 0 0 3 0x40014200 idle0 69867 216538 0 0 3 0x14200 bored smr 1 479136 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9564 6506K 8159K 78643K 15753 0 pcb 13 10K 12K 78643K 208 0 rtable 102 3K 4K 78643K 720 0 ifaddr 112 21K 22K 78643K 298 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1528 0 iov 0 0K 48K 78643K 493 0 mount 1 1K 1K 78643K 1 0 vnodes 1240 78K 78K 78643K 2696 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 11 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 196 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 5 13K 25K 78643K 927 0 sigio 0 0K 0K 78643K 17 0 proc 61 63K 95K 78643K 755 0 subproc 23 1K 2K 78643K 119 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 111 0 in_multi 129 6K 6K 78643K 237 0 ether_multi 1 0K 0K 78643K 14 0 mrt 0 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 60 265K 265K 78643K 60 0 exec 0 0K 1K 78643K 389 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 148 145K 155K 78643K 4194 0 UVM aobj 42 4K 4K 78643K 45 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 6K 78643K 499 0 NDP 17 0K 0K 78643K 64 0 temp 157 3023K 3103K 78643K 38147 0 kqueue 0 0K 0K 78643K 11 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 25 0 20 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 113 0 111 1 0 1 1 0 8 0 rtentry 112 130 0 89 2 0 2 2 0 8 0 unpcb 120 1275 0 1262 5 3 2 2 0 8 1 syncache 264 13 0 13 4 3 1 1 0 8 1 tcpqe 32 44 0 44 3 2 1 1 0 8 1 tcpcb 544 1030 0 1025 17 8 9 12 0 8 8 inpcb 280 1985 0 1977 10 1 9 9 0 8 8 rttmr 72 2 0 2 2 1 1 1 0 8 1 nd6 48 17 0 14 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 2 1 1 0 8 1 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 10 0 10 3 2 1 1 0 8 1 pffrag 232 31 0 31 3 2 1 1 0 482 1 pffrnode 88 31 0 31 3 2 1 1 0 8 1 pffrent 40 665 0 665 3 2 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 87 0 25 1 0 1 1 0 8 0 pfstkey 112 87 0 25 2 0 2 2 0 8 0 pfstate 328 87 0 25 6 0 6 6 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 543 0 327 16 1 15 15 0 8 0 art_table 32 545 0 327 2 0 2 2 0 8 0 art_node 16 129 0 88 1 0 1 1 0 8 0 sysvmsgpl 40 58 0 46 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 194 0 184 1 0 1 1 0 8 0 shmpl 112 43 0 3 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2833 0 1418 46 0 46 46 0 8 0 ffsino 272 2833 0 1418 95 0 95 95 0 8 0 nchpl 144 4552 0 4089 61 41 20 61 0 8 0 uvmvnodes 72 4121 0 0 75 0 75 75 0 8 0 vnodes 208 4121 0 0 217 0 217 217 0 8 0 namei 1024 14993 0 14993 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 14 0 0 2 0 2 2 0 8 0 vmpool 560 16 0 2 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 13019 0 13019 11 10 1 7 0 8 1 plimitpl 152 89 0 81 1 0 1 1 0 8 0 sigapl 432 1113 0 1098 3 1 2 3 0 8 0 futexpl 56 23768 0 23768 1 0 1 1 0 8 1 knotepl 112 198 0 179 1 0 1 1 0 8 0 kqueuepl 104 442 0 440 4 0 4 4 0 8 3 pipepl 160 770 0 752 2 0 2 2 0 8 1 fdescpl 488 1114 0 1098 3 0 3 3 0 8 0 filepl 152 10780 0 10690 21 9 12 14 0 8 8 lockfpl 104 339 0 338 1 0 1 1 0 8 0 lockfspl 48 113 0 112 1 0 1 1 0 8 0 sessionpl 112 24 0 14 1 0 1 1 0 8 0 pgrppl 48 30 0 20 1 0 1 1 0 8 0 ucredpl 96 1002 0 993 1 0 1 1 0 8 0 zombiepl 144 1100 0 1099 1 0 1 1 0 8 0 processpl 896 1131 0 1099 4 0 4 4 0 8 0 procpl 632 3114 0 3072 5 0 5 5 0 8 1 srpgc 64 5 0 5 3 3 0 1 0 8 0 sosppl 128 20 0 20 4 4 0 1 0 8 0 sockpl 384 3398 0 3375 24 13 11 14 0 8 8 mcl64k 65536 21 0 0 3 0 3 3 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 13 0 0 2 0 2 2 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 10 0 0 2 0 2 2 0 8 0 mcl4k 4096 14 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 163 0 0 20 0 20 20 0 8 0 mtagpl 80 24 0 0 1 0 1 1 0 8 0 mbufpl 256 571 0 0 36 0 36 36 0 8 0 bufpl 280 9944 0 2874 506 0 506 506 0 8 0 anonpl 16 140296 0 119396 102 6 96 98 0 125 9 amapchunkpl 152 8032 0 7857 25 10 15 15 0 158 7 amappl16 192 5561 0 4406 72 6 66 70 0 8 8 amappl15 184 70 0 67 1 0 1 1 0 8 0 amappl14 176 58 0 57 1 0 1 1 0 8 0 amappl13 168 127 0 126 2 1 1 1 0 8 0 amappl12 160 136 0 135 1 0 1 1 0 8 0 amappl11 152 148 0 133 1 0 1 1 0 8 0 amappl10 144 18 0 13 1 0 1 1 0 8 0 amappl9 136 855 0 849 1 0 1 1 0 8 0 amappl8 128 381 0 342 2 0 2 2 0 8 0 amappl7 120 138 0 124 1 0 1 1 0 8 0 amappl6 112 158 0 146 1 0 1 1 0 8 0 amappl5 104 346 0 330 1 0 1 1 0 8 0 amappl4 96 1372 0 1342 1 0 1 1 0 8 0 amappl3 88 289 0 280 1 0 1 1 0 8 0 amappl2 80 7717 0 7641 3 1 2 3 0 8 0 amappl1 72 34883 0 34433 26 16 10 21 0 8 0 amappl 80 3475 0 3419 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 44 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1130 0 1100 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1130 0 1100 1 0 1 1 0 8 0 vmmpekpl 168 13545 0 13512 2 0 2 2 0 8 0 vmmpepl 168 147549 0 145181 166 28 138 147 0 357 29 vmsppl 368 1129 0 1100 3 0 3 3 0 8 0 pdppl 4096 2267 0 2214 8 0 8 8 0 8 1 pvpl 32 397029 0 373392 237 19 218 223 0 265 22 pmappl 232 1129 0 1100 3 1 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 213 0 12 6 0 6 6 0 8 0