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(2003fff7edfdff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a38800) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff8000009c1000) at in_ifdetach+0x74 sys/netinet/in.c:969 if_detach(ffff8000009c1000) at if_detach+0x140 sys/net/if.c:1151 tun_clone_destroy(ffff8000009c1000) at tun_clone_destroy+0x179 sys/net/if_tun.c:312 spec_close(ffff800020b82f10) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e19a0d8,7,fffffd807f7c6a20,ffff800020ac0508) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd8064dbbac8,ffff800020ac0508) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8064dbbac8,ffff800020ac0508) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:610 fdrop(fffffd8064dbbac8,ffff800020ac0508) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd8064dbbac8,ffff800020ac0508) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020ac0508) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020ac0508,19,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff800020ac0508,19) at postsig+0x4e3 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff800020ac0508,19) at postsig+0x4e3 sys/kern/kern_sig.c:1431 userret(ffff800020ac0508) at userret+0x199 sys/kern/kern_sig.c:1889 syscall(ffff800020b83390) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:115 [inline] syscall(ffff800020b83390) at syscall+0x55f sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff8fd0, count: -16 ddb{0}> show registers rdi 0x2 rsi 0 rbp 0xffff800020b82d40 rbx 0 rdx 0xffff800020ac0508 rcx 0 rax 0 r8 0xffffffff81342423 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0x9546328052a07032 r12 0 r13 0x3 r14 0x2003fff7edfdff r15 0x1 rip 0xffffffff81eee24d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020b82ce0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> show proc PROC (syz-executor.0) pid=114137 stat=onproc flags process=a proc=2000 pri=17, usrpri=68, nice=20 forw=0xffffffffffffffff, list=0xffff800020ac0780,0xffff800020ac02a0 process=0xffff800020aec700 user=0xffff800020b7e000, vmspace=0xfffffd807f008450 estcpu=36, cpticks=1, pctcpu=0.5 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 17008 84998 36163 0 2 0 syz-executor.1 85003 455738 0 0 3 0x14200 bored sosplice 36163 289353 86478 0 3 0x82 nanosleep syz-executor.1 86478 275527 98866 0 3 0x82 nanosleep syz-fuzzer 86478 100290 98866 0 3 0x4000082 nanosleep syz-fuzzer 86478 495441 98866 0 3 0x4000082 thrsleep syz-fuzzer 86478 416314 98866 0 7 0x4000082 syz-fuzzer 86478 86690 98866 0 3 0x4000082 thrsleep syz-fuzzer 86478 408054 98866 0 3 0x4000082 thrsleep syz-fuzzer 86478 373298 98866 0 3 0x4000082 thrsleep syz-fuzzer 86478 62548 98866 0 3 0x4000082 thrsleep syz-fuzzer 86478 519306 98866 0 3 0x4000082 thrsleep syz-fuzzer 86478 71113 98866 0 3 0x4000082 thrsleep syz-fuzzer 98866 287185 5867 0 3 0x10008a pause ksh 5867 197570 33042 0 3 0x92 select sshd 47186 334563 1 0 3 0x100083 ttyopn getty 33042 295022 1 0 3 0x80 select sshd 88207 46906 9547 74 3 0x100092 bpf pflogd 9547 160775 1 0 3 0x80 netio pflogd 2529 150463 74025 73 3 0x100090 kqread syslogd 74025 205187 1 0 3 0x100082 netio syslogd 22254 422438 1 77 2 0x100090 dhclient 10519 119248 1 0 3 0x80 poll dhclient 41237 293268 0 0 2 0x14200 zerothread 52817 24168 0 0 3 0x14200 aiodoned aiodoned 10833 65790 0 0 3 0x14200 syncer update 59710 82719 0 0 3 0x14200 cleaner cleaner 79737 148946 0 0 3 0x14200 reaper reaper 10788 220087 0 0 3 0x14200 pgdaemon pagedaemon 99855 28459 0 0 3 0x14200 bored crynlk 41302 372777 0 0 3 0x14200 bored crypto 90553 248187 0 0 3 0x40014200 acpi0 acpi0 46632 431946 0 0 3 0x40014200 idle1 41356 167583 0 0 2 0x14200 softnet 56224 248834 0 0 2 0x14200 systqmp 87149 203194 0 0 3 0x14200 bored systq 3258 523411 0 0 3 0x40014200 bored softclock 28485 309915 0 0 3 0x40014200 idle0 26221 205503 0 0 3 0x14200 bored smr 1 236064 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 9497 6407K 7240K 78643K 11108 0 pcb 13 8K 8K 78643K 50 0 rtable 103 4K 4K 78643K 233 0 ifaddr 66 14K 15K 78643K 80 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1486 0 iov 0 0K 32K 78643K 33 0 mount 1 1K 1K 78643K 1 0 vnodes 1227 77K 77K 78643K 1404 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 0K 78643K 90 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 5 13K 25K 78643K 182 0 sigio 0 0K 0K 78643K 2 0 proc 60 63K 95K 78643K 447 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 64 0 in_multi 70 3K 3K 78643K 87 0 ether_multi 1 0K 0K 78643K 3 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 214 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 122 54K 55K 78643K 1556 0 UVM aobj 17 2K 2K 78643K 18 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 35 0 NDP 9 0K 0K 78643K 14 0 temp 119 3017K 3084K 78643K 4329 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 25 0 23 1 0 1 1 0 8 0 rtentry 112 45 0 5 2 0 2 2 0 8 0 unpcb 120 452 0 442 2 1 1 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 18 0 18 1 1 0 1 0 8 0 tcpcb 544 82 0 78 1 0 1 1 0 8 0 inpcb 280 308 0 301 3 0 3 3 0 8 2 nd6 48 4 0 0 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 ppxss 1128 1 0 1 1 0 1 1 0 8 1 pffrag 232 6 0 6 1 0 1 1 0 482 1 pffrnode 88 6 0 6 1 0 1 1 0 8 1 pffrent 40 55 0 55 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 30 0 4 1 0 1 1 0 8 0 pfstkey 112 30 0 4 1 0 1 1 0 8 0 pfstate 328 30 0 3 3 0 3 3 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 256 213 0 0 14 0 14 14 0 8 0 art_table 32 214 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 18 1 0 1 1 0 8 1 semapl 112 88 0 78 1 0 1 1 0 8 0 shmpl 112 16 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1682 0 272 46 0 46 46 0 8 0 ffsino 272 1682 0 272 95 0 95 95 0 8 0 nchpl 144 2156 0 537 61 0 61 61 0 8 0 uvmvnodes 72 1874 0 0 35 0 35 35 0 8 0 vnodes 208 1874 0 0 99 0 99 99 0 8 0 namei 1024 5982 0 5982 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 4 0 0 1 0 1 1 0 8 0 scxspl 192 6291 0 6291 8 1 7 7 0 8 7 plimitpl 152 27 0 19 1 0 1 1 0 8 0 sigapl 432 381 0 366 3 1 2 3 0 8 0 futexpl 56 4384 0 4384 1 0 1 1 0 8 1 knotepl 112 67 0 48 1 0 1 1 0 8 0 kqueuepl 104 36 0 34 1 0 1 1 0 8 0 pipepl 160 276 0 258 2 0 2 2 0 8 1 fdescpl 488 382 0 366 3 0 3 3 0 8 0 filepl 152 2932 0 2842 6 0 6 6 0 8 2 lockfpl 104 82 0 81 1 0 1 1 0 8 0 lockfspl 48 23 0 22 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 96 221 0 212 1 0 1 1 0 8 0 zombiepl 144 367 0 366 1 0 1 1 0 8 0 processpl 896 398 0 366 4 0 4 4 0 8 0 procpl 632 773 0 732 5 0 5 5 0 8 1 srpgc 64 2 0 0 1 0 1 1 0 8 0 sosppl 128 3 0 3 1 0 1 1 0 8 1 sockpl 384 793 0 774 6 1 5 6 0 8 3 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 155 0 0 19 0 19 19 0 8 0 mtagpl 80 9 0 0 1 0 1 1 0 8 0 mbufpl 256 200 0 0 12 0 12 12 0 8 0 bufpl 280 6773 0 1340 389 0 389 389 0 8 0 anonpl 16 52542 0 32226 83 1 82 82 0 125 0 amapchunkpl 152 2120 0 1953 12 0 12 12 0 158 5 amappl16 192 1795 0 695 56 0 56 56 0 8 0 amappl15 184 58 0 55 1 0 1 1 0 8 0 amappl14 176 110 0 105 1 0 1 1 0 8 0 amappl13 168 8 0 7 1 0 1 1 0 8 0 amappl12 160 5 0 3 1 0 1 1 0 8 0 amappl11 152 56 0 41 1 0 1 1 0 8 0 amappl10 144 15 0 9 1 0 1 1 0 8 0 amappl9 136 672 0 667 1 0 1 1 0 8 0 amappl8 128 200 0 172 2 0 2 2 0 8 0 amappl7 120 102 0 91 1 0 1 1 0 8 0 amappl6 112 57 0 49 1 0 1 1 0 8 0 amappl5 104 140 0 122 1 0 1 1 0 8 0 amappl4 96 637 0 609 1 0 1 1 0 8 0 amappl3 88 128 0 121 1 0 1 1 0 8 0 amappl2 80 2160 0 2083 3 1 2 3 0 8 0 amappl1 72 18341 0 17891 26 16 10 20 0 8 0 amappl 80 1025 0 978 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 17 0 1 1 0 1 1 0 8 0 uaddrrnd 24 386 0 366 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 386 0 366 1 0 1 1 0 8 0 vmmpekpl 168 6961 0 6926 2 0 2 2 0 8 0 vmmpepl 168 54926 0 52625 138 14 124 132 0 357 19 vmsppl 368 385 0 366 2 0 2 2 0 8 0 pdppl 4096 779 0 736 6 0 6 6 0 8 0 pvpl 32 171715 0 148494 193 0 193 193 0 265 4 pmappl 232 385 0 366 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 162 0 3 5 0 5 5 0 8 0