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(bfffeffffdffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a83500) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000a54000) at in_ifdetach+0x74 sys/netinet/in.c:969 if_detach(ffff800000a54000) at if_detach+0x140 sys/net/if.c:1151 tun_clone_destroy(ffff800000a54000) at tun_clone_destroy+0x179 sys/net/if_tun.c:312 spec_close(ffff800023db72c0) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e12b348,7,fffffd807f7c6780,ffff800020ac0018) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd8064712150,ffff800020ac0018) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8064712150,ffff800020ac0018) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:610 fdrop(fffffd8064712150,ffff800020ac0018) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd8064712150,ffff800020ac0018) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020ac0018) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020ac0018,19,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff800020ac0018,19) at postsig+0x4e3 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff800020ac0018,19) at postsig+0x4e3 sys/kern/kern_sig.c:1431 userret(ffff800020ac0018) at userret+0x199 sys/kern/kern_sig.c:1889 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffc5a50, count: -15 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800023db70f0 rbx 0 rdx 0xffff800020ac0018 rcx 0 rax 0 r8 0xffffffff81342423 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0x4642795c0656aba9 r12 0 r13 0x3 r14 0xbfffeffffdffffff r15 0x1 rip 0xffffffff81eee24d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023db7090 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=187647 stat=onproc flags process=a proc=2000 pri=74, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff800020ac1b40,0xffff800020ac0c80 process=0xffff800020a9a710 user=0xffff800023db2000, vmspace=0xfffffd806e7a42e8 estcpu=36, cpticks=2, pctcpu=0.8 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 88096 120032 88827 0 3 0x82 nanosleep syz-executor.1 22358 21225 0 0 3 0x14200 acct acct 51824 67595 1 0 3 0x100083 ttyin getty 93869 188553 0 0 3 0x14200 bored sosplice 88827 175801 42991 0 3 0x82 thrsleep syz-fuzzer 88827 509657 42991 0 3 0x4000082 nanosleep syz-fuzzer 88827 311830 42991 0 3 0x4000082 thrsleep syz-fuzzer 88827 518542 42991 0 3 0x4000082 thrsleep syz-fuzzer 88827 305690 42991 0 3 0x4000082 thrsleep syz-fuzzer 88827 322 42991 0 7 0x4000082 syz-fuzzer 88827 31276 42991 0 3 0x4000082 thrsleep syz-fuzzer 88827 231551 42991 0 3 0x4000082 thrsleep syz-fuzzer 88827 518179 42991 0 3 0x4000082 thrsleep syz-fuzzer 88827 121714 42991 0 3 0x4000082 thrsleep syz-fuzzer 42991 511163 84392 0 3 0x10008a pause ksh 84392 382603 45067 0 3 0x92 select sshd 45067 264615 1 0 3 0x80 select sshd 96157 222283 86451 74 3 0x100092 bpf pflogd 86451 157543 1 0 3 0x80 netio pflogd 90314 251477 73369 73 3 0x100090 kqread syslogd 73369 202761 1 0 3 0x100082 netio syslogd 9051 480074 1 77 2 0x100090 dhclient 76877 133284 1 0 3 0x80 poll dhclient 59045 481342 0 0 2 0x14200 zerothread 17878 304976 0 0 3 0x14200 aiodoned aiodoned 44758 76993 0 0 3 0x14200 syncer update 94764 26453 0 0 3 0x14200 cleaner cleaner 26605 473139 0 0 3 0x14200 reaper reaper 63799 458614 0 0 3 0x14200 pgdaemon pagedaemon 68628 107792 0 0 3 0x14200 bored crynlk 92261 493088 0 0 3 0x14200 bored crypto 95599 314216 0 0 3 0x40014200 acpi0 acpi0 5359 191492 0 0 3 0x40014200 idle1 45207 214508 0 0 2 0x14200 softnet 32470 366653 0 0 2 0x14200 systqmp 27143 385257 0 0 3 0x14200 bored systq 20704 295928 0 0 3 0x40014200 bored softclock 24399 71355 0 0 3 0x40014200 idle0 27843 344993 0 0 3 0x14200 bored smr 1 315931 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 9577 6705K 7071K 78643K 12378 0 pcb 13 8K 9K 78643K 183 0 rtable 101 12K 12K 78643K 618 0 ifaddr 94 17K 17K 78643K 257 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1521 0 iov 0 0K 48K 78643K 145 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1867 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 12 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 306 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 4 9K 25K 78643K 722 0 sigio 0 0K 0K 78643K 56 0 proc 60 63K 83K 78643K 703 0 subproc 23 1K 2K 78643K 102 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 177 0 in_multi 95 5K 5K 78643K 181 0 ether_multi 1 0K 0K 78643K 8 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 84 371K 371K 78643K 84 0 exec 0 0K 1K 78643K 345 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 138 55K 56K 78643K 3505 0 UVM aobj 79 3K 3K 78643K 83 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 103 0 NDP 17 0K 0K 78643K 62 0 temp 157 3023K 3091K 78643K 41557 0 kqueue 0 0K 0K 78643K 4 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 15 0 11 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 73 0 71 1 0 1 1 0 8 0 rtentry 112 110 0 71 2 0 2 2 0 8 0 unpcb 120 391 0 381 1 0 1 1 0 8 0 syncache 264 9 0 9 3 2 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 544 322 0 318 3 2 1 2 0 8 0 inpcb 280 2123 0 2116 6 4 2 4 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 17 0 14 1 0 1 1 0 8 0 ppxss 1128 12 0 12 3 3 0 1 0 8 0 pffrag 232 16 0 16 5 4 1 1 0 482 1 pffrnode 88 16 0 16 5 4 1 1 0 8 1 pffrent 40 634 0 634 5 4 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 69 0 24 1 0 1 1 0 8 0 pfstkey 112 69 0 24 2 0 2 2 0 8 0 pfstate 328 69 0 24 5 0 5 5 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 256 549 0 339 17 3 14 15 0 8 0 art_table 32 551 0 339 2 0 2 2 0 8 0 art_node 16 109 0 69 1 0 1 1 0 8 0 sysvmsgpl 40 59 0 26 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 300 0 290 1 0 1 1 0 8 0 shmpl 112 81 0 4 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2500 0 1084 46 0 46 46 0 8 0 ffsino 272 2500 0 1084 95 0 95 95 0 8 0 nchpl 144 3779 0 3321 61 41 20 61 0 8 0 uvmvnodes 72 3016 0 0 55 0 55 55 0 8 0 vnodes 208 3016 0 0 159 0 159 159 0 8 0 namei 1024 13657 0 13657 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 560 4 0 1 1 0 1 1 0 8 0 scsiplug 64 2 0 2 2 2 0 1 0 8 0 scxspl 192 12099 0 12099 12 10 2 7 0 8 2 plimitpl 152 84 0 76 1 0 1 1 0 8 0 sigapl 432 910 0 896 3 1 2 3 0 8 0 futexpl 56 19216 0 19216 1 0 1 1 0 8 1 knotepl 112 193 0 174 1 0 1 1 0 8 0 kqueuepl 104 244 0 242 1 0 1 1 0 8 0 pipepl 160 622 0 604 3 1 2 2 0 8 1 fdescpl 488 911 0 896 3 0 3 3 0 8 0 filepl 152 9361 0 9271 9 4 5 7 0 8 1 lockfpl 104 330 0 329 1 0 1 1 0 8 0 lockfspl 48 107 0 106 1 0 1 1 0 8 0 sessionpl 112 23 0 12 1 0 1 1 0 8 0 pgrppl 48 37 0 26 1 0 1 1 0 8 0 ucredpl 96 2068 0 2059 1 0 1 1 0 8 0 zombiepl 144 897 0 895 1 0 1 1 0 8 0 processpl 896 928 0 895 4 0 4 4 0 8 0 procpl 632 2499 0 2457 6 1 5 5 0 8 1 srpgc 64 6 0 4 2 1 1 1 0 8 0 sosppl 128 39 0 39 4 3 1 1 0 8 1 sockpl 384 2608 0 2588 9 5 4 7 0 8 1 mcl64k 65536 267 0 0 34 0 34 34 0 8 1 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 11 0 0 2 0 2 2 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 13 0 0 2 0 2 2 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 175 0 0 21 0 21 21 0 8 0 mtagpl 80 27 0 0 1 0 1 1 0 8 0 mbufpl 256 383 0 0 22 0 22 22 0 8 0 bufpl 280 8878 0 1808 506 0 506 506 0 8 0 anonpl 16 115192 0 94838 98 4 94 94 0 125 10 amapchunkpl 152 5734 0 5573 13 5 8 12 0 158 0 amappl16 192 4552 0 3441 74 10 64 68 0 8 8 amappl15 184 80 0 76 1 0 1 1 0 8 0 amappl14 176 150 0 147 1 0 1 1 0 8 0 amappl13 168 192 0 190 2 1 1 1 0 8 0 amappl12 160 103 0 102 2 1 1 1 0 8 0 amappl11 152 129 0 113 1 0 1 1 0 8 0 amappl10 144 217 0 208 1 0 1 1 0 8 0 amappl9 136 658 0 654 1 0 1 1 0 8 0 amappl8 128 194 0 154 2 0 2 2 0 8 0 amappl7 120 320 0 307 1 0 1 1 0 8 0 amappl6 112 115 0 105 1 0 1 1 0 8 0 amappl5 104 260 0 246 1 0 1 1 0 8 0 amappl4 96 1093 0 1061 1 0 1 1 0 8 0 amappl3 88 337 0 329 1 0 1 1 0 8 0 amappl2 80 6304 0 6230 3 1 2 3 0 8 0 amappl1 72 30095 0 29651 26 16 10 21 0 8 0 amappl 80 2827 0 2779 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 82 0 4 2 0 2 2 0 8 0 uaddrrnd 24 915 0 897 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 915 0 897 1 0 1 1 0 8 0 vmmpekpl 168 11229 0 11197 2 0 2 2 0 8 0 vmmpepl 168 123031 0 120804 170 28 142 145 0 357 35 vmsppl 368 914 0 897 2 0 2 2 0 8 0 pdppl 4096 1837 0 1797 6 0 6 6 0 8 0 pvpl 32 337716 0 314465 227 10 217 217 0 265 28 pmappl 232 914 0 897 3 1 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 216 0 9 6 0 6 6 0 8 0