kernel: protection fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace in_delmulti(bff7ffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a5dd00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000a15000) at in_ifdetach+0x74 sys/netinet/in.c:969 if_detach(ffff800000a15000) at if_detach+0x140 sys/net/if.c:1151 tun_clone_destroy(ffff800000a15000) at tun_clone_destroy+0x179 sys/net/if_tun.c:312 spec_close(ffff800020b75280) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e12b1a8,7,fffffd807f7c6840,ffff800020ac13d8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd80659f43a8,ffff800020ac13d8) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80659f43a8,ffff800020ac13d8) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:610 fdrop(fffffd80659f43a8,ffff800020ac13d8) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd80659f43a8,ffff800020ac13d8) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020ac13d8) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020ac13d8,19,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff800020ac13d8,19) at postsig+0x4e3 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff800020ac13d8,19) at postsig+0x4e3 sys/kern/kern_sig.c:1431 userret(ffff800020ac13d8) at userret+0x199 sys/kern/kern_sig.c:1889 syscall(ffff800020b75700) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:115 [inline] syscall(ffff800020b75700) at syscall+0x55f sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff2a50, count: -16 ddb{0}> show registers rdi 0x2 rsi 0 rbp 0xffff800020b750b0 rbx 0 rdx 0xffff800020ac13d8 rcx 0 rax 0 r8 0xffffffff81342423 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0x68384aded69ab543 r12 0 r13 0x3 r14 0xbff7ffffffffffff r15 0x1 rip 0xffffffff81eee24d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020b75050 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> show proc PROC (syz-executor.0) pid=33980 stat=onproc flags process=a proc=2000 pri=17, usrpri=73, nice=20 forw=0xffffffffffffffff, list=0xffff800020ac1650,0xffff800020ac1170 process=0xffff800020aec380 user=0xffff800020b70000, vmspace=0xfffffd807f008000 estcpu=36, cpticks=2, pctcpu=0.1 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 36095 100265 36644 0 3 0x80 nanosleep syz-executor.1 36095 208743 36644 0 3 0x4000080 ttyout syz-executor.1 36095 368527 36644 0 3 0x4000080 fsleep syz-executor.1 49707 124221 0 0 3 0x14200 bored sosplice 36644 323583 42582 0 3 0x82 nanosleep syz-executor.1 42582 93101 13147 0 3 0x82 thrsleep syz-fuzzer 42582 494890 13147 0 3 0x4000082 nanosleep syz-fuzzer 42582 194969 13147 0 3 0x4000082 thrsleep syz-fuzzer 42582 7447 13147 0 3 0x4000082 thrsleep syz-fuzzer 42582 396631 13147 0 3 0x4000082 thrsleep syz-fuzzer 42582 190823 13147 0 3 0x4000082 thrsleep syz-fuzzer 42582 52413 13147 0 7 0x4000082 syz-fuzzer 42582 87665 13147 0 3 0x4000082 thrsleep syz-fuzzer 42582 404484 13147 0 3 0x4000082 thrsleep syz-fuzzer 42582 12355 13147 0 3 0x4000082 thrsleep syz-fuzzer 13147 238379 29664 0 3 0x10008a pause ksh 29664 331670 72397 0 3 0x92 select sshd 72430 140337 1 0 3 0x100083 ttyin getty 72397 133847 1 0 3 0x80 select sshd 10126 346969 62533 74 3 0x100092 bpf pflogd 62533 522917 1 0 3 0x80 netio pflogd 66185 390442 8897 73 3 0x100090 kqread syslogd 8897 222974 1 0 3 0x100082 netio syslogd 5279 158413 1 77 2 0x100090 dhclient 22576 300514 1 0 3 0x80 poll dhclient 17580 108573 0 0 2 0x14200 zerothread 43739 370292 0 0 3 0x14200 aiodoned aiodoned 74925 200207 0 0 3 0x14200 syncer update 98046 251634 0 0 3 0x14200 cleaner cleaner 30275 443809 0 0 3 0x14200 reaper reaper 33843 406273 0 0 3 0x14200 pgdaemon pagedaemon 38880 353421 0 0 3 0x14200 bored crynlk 94695 380242 0 0 3 0x14200 bored crypto 91397 67890 0 0 3 0x40014200 acpi0 acpi0 75873 422729 0 0 3 0x40014200 idle1 85399 194141 0 0 2 0x14200 softnet 30418 408698 0 0 2 0x14200 systqmp 53528 364853 0 0 3 0x14200 bored systq 8072 108429 0 0 3 0x40014200 bored softclock 59653 317954 0 0 3 0x40014200 idle0 10468 220499 0 0 3 0x14200 bored smr 1 469391 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9541 6426K 7071K 78643K 11345 0 pcb 14 8K 8K 78643K 76 0 rtable 92 4K 4K 78643K 310 0 ifaddr 82 14K 15K 78643K 138 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1487 0 iov 0 0K 16K 78643K 56 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1513 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 111 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 5 13K 25K 78643K 236 0 sigio 0 0K 0K 78643K 55 0 proc 60 63K 95K 78643K 464 0 subproc 23 1K 2K 78643K 36 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 27 0 in_multi 41 2K 2K 78643K 64 0 ether_multi 1 0K 0K 78643K 5 0 mrt 0 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 90 397K 397K 78643K 90 0 exec 0 0K 1K 78643K 224 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 124 54K 58K 78643K 1863 0 UVM aobj 14 2K 2K 78643K 16 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 2 0K 3K 78643K 84 0 NDP 15 0K 0K 78643K 30 0 temp 149 3019K 3091K 78643K 12345 0 kqueue 0 0K 0K 78643K 2 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 6 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 57 0 55 1 0 1 1 0 8 0 rtentry 112 50 0 16 2 0 2 2 0 8 0 unpcb 120 383 0 372 1 0 1 1 0 8 0 syncache 264 5 0 5 2 2 0 1 0 8 0 tcpqe 32 168 0 168 1 1 0 1 0 8 0 tcpcb 544 111 0 107 1 0 1 1 0 8 0 inpcb 280 519 0 509 3 1 2 3 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 5 0 2 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 ppxss 1128 5 0 5 2 1 1 1 0 8 1 pffrag 232 20 0 20 1 0 1 1 0 482 1 pffrnode 88 20 0 20 1 0 1 1 0 8 1 pffrent 40 904 0 904 1 0 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 28 0 8 1 0 1 1 0 8 0 pfstkey 112 28 0 8 1 0 1 1 0 8 0 pfstate 328 28 0 8 2 0 2 2 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 284 0 73 16 0 16 16 0 8 2 art_table 32 285 0 73 2 0 2 2 0 8 0 art_node 16 49 0 14 1 0 1 1 0 8 0 sysvmsgpl 40 53 0 21 1 0 1 1 0 8 0 semupl 112 4 0 4 2 2 0 1 0 8 0 semapl 112 103 0 93 1 0 1 1 0 8 0 shmpl 112 14 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1867 0 462 46 0 46 46 0 8 0 ffsino 272 1867 0 462 95 0 95 95 0 8 0 nchpl 144 2415 0 797 61 0 61 61 0 8 0 uvmvnodes 72 2067 0 0 38 0 38 38 0 8 0 vnodes 208 2067 0 0 109 0 109 109 0 8 0 namei 1024 7775 0 7775 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 6 0 2 1 0 1 1 0 8 0 scxspl 192 6444 0 6444 8 7 1 7 0 8 1 plimitpl 152 29 0 21 1 0 1 1 0 8 0 sigapl 432 435 0 420 3 1 2 3 0 8 0 futexpl 56 6831 0 6830 1 0 1 1 0 8 0 knotepl 112 73 0 54 1 0 1 1 0 8 0 kqueuepl 104 54 0 52 1 0 1 1 0 8 0 pipepl 160 338 0 320 3 1 2 2 0 8 1 fdescpl 488 436 0 420 3 0 3 3 0 8 0 filepl 152 4310 0 4214 8 1 7 7 0 8 2 lockfpl 104 104 0 103 1 0 1 1 0 8 0 lockfspl 48 37 0 36 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 1055 0 1046 1 0 1 1 0 8 0 zombiepl 144 423 0 422 1 0 1 1 0 8 0 processpl 896 454 0 422 4 0 4 4 0 8 0 procpl 632 1075 0 1032 5 0 5 5 0 8 1 srpgc 64 4 0 2 2 1 1 1 0 8 0 sosppl 128 8 0 8 3 2 1 1 0 8 1 sockpl 384 987 0 964 5 0 5 5 0 8 2 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 260 0 0 32 0 32 32 0 8 0 mtagpl 80 13 0 0 1 0 1 1 0 8 0 mbufpl 256 305 0 0 18 0 18 18 0 8 0 bufpl 280 6689 0 1342 382 0 382 382 0 8 0 anonpl 16 56765 0 36868 82 1 81 81 0 125 0 amapchunkpl 152 2525 0 2370 8 1 7 8 0 158 0 amappl16 192 2036 0 950 56 1 55 55 0 8 0 amappl15 184 58 0 54 1 0 1 1 0 8 0 amappl14 176 28 0 26 1 0 1 1 0 8 0 amappl13 168 11 0 9 1 0 1 1 0 8 0 amappl12 160 6 0 5 2 1 1 1 0 8 0 amappl11 152 154 0 138 1 0 1 1 0 8 0 amappl10 144 15 0 8 1 0 1 1 0 8 0 amappl9 136 710 0 705 1 0 1 1 0 8 0 amappl8 128 242 0 209 2 0 2 2 0 8 0 amappl7 120 103 0 92 1 0 1 1 0 8 0 amappl6 112 156 0 149 1 0 1 1 0 8 0 amappl5 104 142 0 127 1 0 1 1 0 8 0 amappl4 96 701 0 672 1 0 1 1 0 8 0 amappl3 88 130 0 123 1 0 1 1 0 8 0 amappl2 80 2583 0 2506 3 1 2 3 0 8 0 amappl1 72 19799 0 19339 26 16 10 21 0 8 0 amappl 80 1328 0 1279 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 15 0 2 1 0 1 1 0 8 0 uaddrrnd 24 442 0 422 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 442 0 422 1 0 1 1 0 8 0 vmmpekpl 168 7614 0 7578 2 0 2 2 0 8 0 vmmpepl 168 61547 0 59255 133 27 106 130 0 357 1 vmsppl 368 441 0 422 2 0 2 2 0 8 0 pdppl 4096 891 0 848 6 0 6 6 0 8 0 pvpl 32 186430 0 163294 191 1 190 191 0 265 1 pmappl 232 441 0 422 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 185 0 3 6 0 6 6 0 8 0