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(bffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a29800) 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(ffff800022d95aa0) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806ec68348,7,fffffd807f7c6960,ffff800020aceee8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd8064df3ac8,ffff800020aceee8) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8064df3ac8,ffff800020aceee8) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:610 fdrop(fffffd8064df3ac8,ffff800020aceee8) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd8064df3ac8,ffff800020aceee8) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020aceee8) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020aceee8,19,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff800020aceee8,19) at postsig+0x4e3 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff800020aceee8,19) at postsig+0x4e3 sys/kern/kern_sig.c:1431 userret(ffff800020aceee8) at userret+0x199 sys/kern/kern_sig.c:1889 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffcfc00, count: -15 ddb{0}> show registers rdi 0x2 rsi 0 rbp 0xffff800022d958d0 rbx 0 rdx 0xffff800020aceee8 rcx 0 rax 0 r8 0xffffffff81342423 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0xdee44d9f9d9288f0 r12 0 r13 0x3 r14 0xbffffffeffffffff r15 0x1 rip 0xffffffff81eee24d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800022d95870 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> show proc PROC (syz-executor.1) pid=216215 stat=onproc flags process=a proc=2000 pri=17, usrpri=57, nice=20 forw=0xffffffffffffffff, list=0xffff800020acf160,0xffff800020ace518 process=0xffff800020aeca80 user=0xffff800022d90000, vmspace=0xfffffd807f0085c0 estcpu=36, cpticks=1, pctcpu=0.14 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 44909 464055 2835 0 3 0x80 nanosleep syz-executor.0 44909 29916 2835 0 3 0x4000080 netcon2 syz-executor.0 9777 306651 0 0 3 0x14200 bored sosplice 2835 262805 66935 0 3 0x82 nanosleep syz-executor.0 66935 430182 35601 0 3 0x82 thrsleep syz-fuzzer 66935 378210 35601 0 3 0x4000082 nanosleep syz-fuzzer 66935 321259 35601 0 3 0x4000082 thrsleep syz-fuzzer 66935 179715 35601 0 3 0x4000082 thrsleep syz-fuzzer 66935 355934 35601 0 3 0x4000082 thrsleep syz-fuzzer 66935 400711 35601 0 3 0x4000082 thrsleep syz-fuzzer 66935 428800 35601 0 3 0x4000082 thrsleep syz-fuzzer 66935 59380 35601 0 7 0x4000082 syz-fuzzer 66935 206242 35601 0 3 0x4000082 thrsleep syz-fuzzer 66935 267172 35601 0 3 0x4000082 thrsleep syz-fuzzer 35601 30057 19594 0 3 0x10008a pause ksh 19594 235148 33010 0 3 0x92 select sshd 99326 31317 1 0 3 0x100083 ttyin getty 33010 513738 1 0 3 0x80 select sshd 63536 312531 10822 74 3 0x100092 bpf pflogd 10822 322587 1 0 3 0x80 netio pflogd 41666 27824 80298 73 3 0x100090 kqread syslogd 80298 421281 1 0 3 0x100082 netio syslogd 24910 384285 1 77 2 0x100090 dhclient 42723 380897 1 0 3 0x80 poll dhclient 28229 265215 0 0 2 0x14200 zerothread 13199 504962 0 0 3 0x14200 aiodoned aiodoned 24272 281976 0 0 3 0x14200 syncer update 19112 287400 0 0 3 0x14200 cleaner cleaner 37963 522741 0 0 3 0x14200 reaper reaper 32109 40881 0 0 3 0x14200 pgdaemon pagedaemon 63409 42157 0 0 3 0x14200 bored crynlk 9775 474899 0 0 3 0x14200 bored crypto 94577 318313 0 0 3 0x40014200 acpi0 acpi0 35404 62695 0 0 3 0x40014200 idle1 12844 223879 0 0 2 0x14200 softnet 10106 344489 0 0 2 0x14200 systqmp 77778 518866 0 0 3 0x14200 bored systq 93275 324213 0 0 3 0x40014200 bored softclock 92568 54819 0 0 3 0x40014200 idle0 38104 391122 0 0 3 0x14200 bored smr 1 315050 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 9519 6416K 6803K 78643K 11062 0 pcb 13 8K 8K 78643K 153 0 rtable 100 3K 4K 78643K 269 0 ifaddr 74 14K 15K 78643K 119 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1477 0 iov 0 0K 24K 78643K 51 0 mount 1 1K 1K 78643K 1 0 vnodes 1225 77K 77K 78643K 1363 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 92 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 5 13K 25K 78643K 209 0 sigio 0 0K 0K 78643K 6 0 proc 60 63K 95K 78643K 470 0 subproc 23 1K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 16 0 in_multi 52 2K 3K 78643K 67 0 ether_multi 1 0K 0K 78643K 5 0 mrt 0 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 66 291K 291K 78643K 66 0 exec 0 0K 1K 78643K 228 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 119 38K 42K 78643K 1653 0 UVM aobj 20 2K 2K 78643K 20 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 42 0 NDP 12 0K 0K 78643K 24 0 temp 118 3014K 3079K 78643K 5736 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 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 41 0 39 1 0 1 1 0 8 0 rtentry 112 46 0 6 2 0 2 2 0 8 0 unpcb 120 613 0 603 3 1 2 2 0 8 1 syncache 264 5 0 5 2 1 1 1 0 8 1 tcpqe 32 112 0 112 2 1 1 1 0 8 1 tcpcb 544 72 0 67 2 0 2 2 0 8 1 inpcb 280 347 0 339 3 0 3 3 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 4 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 swfcl 56 1 0 0 1 0 1 1 0 8 0 ppxss 1128 8 0 8 1 0 1 1 0 8 1 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 pfstitem 24 20 0 2 1 0 1 1 0 8 0 pfstkey 112 20 0 2 1 0 1 1 0 8 0 pfstate 328 20 0 2 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 256 212 0 0 14 0 14 14 0 8 0 art_table 32 213 0 0 2 0 2 2 0 8 0 art_node 16 45 0 5 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 18 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 88 0 78 1 0 1 1 0 8 0 shmpl 112 18 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1727 0 321 46 0 46 46 0 8 0 ffsino 272 1727 0 321 95 0 95 95 0 8 0 nchpl 144 2277 0 657 61 0 61 61 0 8 0 uvmvnodes 72 1873 0 0 35 0 35 35 0 8 0 vnodes 208 1873 0 0 99 0 99 99 0 8 0 namei 1024 6314 0 6314 1 0 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 3 0 0 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 0 1 1 0 8 1 scxspl 192 6629 0 6629 8 7 1 7 0 8 1 plimitpl 152 33 0 24 1 0 1 1 0 8 0 sigapl 432 408 0 393 3 1 2 3 0 8 0 futexpl 56 4311 0 4311 1 0 1 1 0 8 1 knotepl 112 66 0 47 1 0 1 1 0 8 0 kqueuepl 104 48 0 46 1 0 1 1 0 8 0 pipepl 160 228 0 210 2 1 1 2 0 8 0 fdescpl 488 409 0 393 3 0 3 3 0 8 0 filepl 152 3082 0 2990 6 0 6 6 0 8 2 lockfpl 104 31 0 30 1 0 1 1 0 8 0 lockfspl 48 13 0 12 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 34 0 23 1 0 1 1 0 8 0 ucredpl 96 225 0 216 1 0 1 1 0 8 0 zombiepl 144 394 0 392 1 0 1 1 0 8 0 processpl 896 425 0 392 4 0 4 4 0 8 0 procpl 632 869 0 826 5 0 5 5 0 8 1 srpgc 64 2 0 0 1 0 1 1 0 8 0 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 384 1003 0 983 7 1 6 6 0 8 4 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 173 0 0 21 0 21 21 0 8 0 mtagpl 80 15 0 0 1 0 1 1 0 8 0 mbufpl 256 277 0 0 17 0 17 17 0 8 0 bufpl 280 6926 0 1350 399 0 399 399 0 8 0 anonpl 16 54839 0 34182 85 1 84 84 0 125 0 amapchunkpl 152 2218 0 2058 8 1 7 8 0 158 0 amappl16 192 2045 0 917 57 0 57 57 0 8 0 amappl15 184 59 0 55 1 0 1 1 0 8 0 amappl14 176 120 0 114 1 0 1 1 0 8 0 amappl12 160 9 0 6 1 0 1 1 0 8 0 amappl11 152 55 0 40 1 0 1 1 0 8 0 amappl10 144 15 0 8 1 0 1 1 0 8 0 amappl9 136 601 0 598 1 0 1 1 0 8 0 amappl8 128 135 0 108 1 0 1 1 0 8 0 amappl7 120 103 0 92 1 0 1 1 0 8 0 amappl6 112 66 0 59 1 0 1 1 0 8 0 amappl5 104 135 0 120 1 0 1 1 0 8 0 amappl4 96 668 0 634 1 0 1 1 0 8 0 amappl3 88 208 0 199 1 0 1 1 0 8 0 amappl2 80 2366 0 2289 3 1 2 3 0 8 0 amappl1 72 19249 0 18794 26 16 10 21 0 8 0 amappl 80 1127 0 1079 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 19 0 0 1 0 1 1 0 8 0 uaddrrnd 24 412 0 393 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 412 0 393 1 0 1 1 0 8 0 vmmpekpl 168 6991 0 6955 2 0 2 2 0 8 0 vmmpepl 168 57915 0 55588 136 13 123 131 0 357 17 vmsppl 368 411 0 393 2 0 2 2 0 8 0 pdppl 4096 831 0 789 6 0 6 6 0 8 0 pvpl 32 179518 0 155688 198 0 198 198 0 265 2 pmappl 232 411 0 393 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 170 0 3 5 0 5 5 0 8 0