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(ffff800000a49900) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000a0f800) at in_ifdetach+0x74 sys/netinet/in.c:969 if_detach(ffff800000a0f800) at if_detach+0x140 sys/net/if.c:1151 tun_clone_destroy(ffff800000a0f800) at tun_clone_destroy+0x179 sys/net/if_tun.c:312 spec_close(ffff800023bb9320) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd8078a9b1a8,7,fffffd807f7c6720,ffff800020b3d3e8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd80658f3dc0,ffff800020b3d3e8) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80658f3dc0,ffff800020b3d3e8) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:610 fdrop(fffffd80658f3dc0,ffff800020b3d3e8) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd80658f3dc0,ffff800020b3d3e8) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020b3d3e8) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020b3d3e8,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff800020b3d3e8,ffff800023bb95b0,ffff800023bb9600) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800023bb9680) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800023bb9680) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd6180, count: -15 ddb{0}> show registers rdi 0x2 rsi 0 rbp 0xffff800023bb9150 rbx 0 rdx 0xffff800020b3d3e8 rcx 0 rax 0 r8 0xffffffff81342423 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0x5817d2087f43b635 r12 0 r13 0x3 r14 0xbff7ffffffffffff r15 0x1 rip 0xffffffff81eee24d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023bb90f0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> show proc PROC (syz-executor.1) pid=470615 stat=onproc flags process=1018 proc=2000 pri=32, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff800020ac1b40,0xffffffff82634898 process=0xffff800020aec700 user=0xffff800023bb4000, vmspace=0xfffffd807f0082e0 estcpu=28, cpticks=3, pctcpu=224.15 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 41503 321724 0 0 3 0x14200 acct acct 84257 24687 0 0 3 0x14200 bored sosplice 95504 202310 66827 0 7 0x2 syz-fuzzer 95504 309840 66827 0 3 0x4000082 nanosleep syz-fuzzer 95504 36548 66827 0 3 0x4000082 thrsleep syz-fuzzer 95504 405234 66827 0 3 0x4000082 thrsleep syz-fuzzer 95504 272233 66827 0 3 0x4000082 thrsleep syz-fuzzer 95504 232189 66827 0 3 0x4000082 thrsleep syz-fuzzer 95504 226413 66827 0 3 0x4000082 thrsleep syz-fuzzer 95504 333245 66827 0 2 0x4000002 syz-fuzzer 95504 124557 66827 0 3 0x4000082 thrsleep syz-fuzzer 95504 325094 66827 0 3 0x4000082 thrsleep syz-fuzzer 66827 384328 25966 0 3 0x10008a pause ksh 25966 516885 30202 0 3 0x92 select sshd 97989 153548 1 0 3 0x100083 ttyin getty 30202 210209 1 0 3 0x80 select sshd 33215 454503 8279 74 3 0x100092 bpf pflogd 8279 471309 1 0 3 0x80 netio pflogd 71252 175201 58622 73 3 0x100090 kqread syslogd 58622 262904 1 0 3 0x100082 netio syslogd 75099 367361 1 77 2 0x100090 dhclient 49501 69575 1 0 3 0x80 poll dhclient 97738 390445 0 0 2 0x14200 zerothread 51630 413884 0 0 3 0x14200 aiodoned aiodoned 58816 511635 0 0 3 0x14200 syncer update 48435 173727 0 0 3 0x14200 cleaner cleaner 89903 483860 0 0 3 0x14200 reaper reaper 87898 94820 0 0 3 0x14200 pgdaemon pagedaemon 63673 265116 0 0 3 0x14200 bored crynlk 98407 499765 0 0 3 0x14200 bored crypto 96964 237112 0 0 3 0x40014200 acpi0 acpi0 74921 234754 0 0 3 0x40014200 idle1 75182 238165 0 0 2 0x14200 softnet 36900 433285 0 0 2 0x14200 systqmp 89234 312984 0 0 3 0x14200 bored systq 53023 500883 0 0 3 0x40014200 bored softclock 71168 426224 0 0 3 0x40014200 idle0 24514 124749 0 0 3 0x14200 bored smr 1 261048 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 9525 6482K 7776K 78643K 12562 0 pcb 13 8K 8K 78643K 90 0 rtable 81 3K 4K 78643K 409 0 ifaddr 71 14K 17K 78643K 161 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1482 0 iov 0 0K 36K 78643K 75 0 mount 1 1K 1K 78643K 1 0 vnodes 1228 77K 77K 78643K 1726 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 113 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 3 5K 25K 78643K 348 0 sigio 0 0K 0K 78643K 4 0 proc 60 63K 95K 78643K 518 0 subproc 7 0K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 28 0 in_multi 51 2K 3K 78643K 106 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 48 212K 212K 78643K 48 0 exec 0 0K 1K 78643K 247 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 30K 48K 78643K 2135 0 UVM aobj 36 2K 2K 78643K 45 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 72 0 NDP 12 0K 0K 78643K 34 0 temp 119 3018K 3085K 78643K 17972 0 kqueue 0 0K 0K 78643K 6 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 10 0 8 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 49 0 47 1 0 1 1 0 8 0 rtentry 112 74 0 45 2 0 2 2 0 8 0 unpcb 120 228 0 218 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 323 0 323 1 1 0 1 0 8 0 tcpcb 544 173 0 169 3 2 1 3 0 8 0 inpcb 280 685 0 678 3 2 1 3 0 8 0 rttmr 72 2 0 1 1 0 1 1 0 8 0 ip6q 72 1 0 0 1 0 1 1 0 8 0 nd6 48 9 0 8 1 0 1 1 0 8 0 ppxss 1128 10 0 10 2 2 0 1 0 8 0 pffrag 232 12 0 12 1 1 0 1 0 482 0 pffrnode 88 12 0 12 1 1 0 1 0 8 0 pffrent 40 540 0 540 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 49 0 14 1 0 1 1 0 8 0 pfstkey 112 49 0 14 2 0 2 2 0 8 0 pfstate 328 49 0 14 4 0 4 4 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 256 358 0 176 16 1 15 15 0 8 0 art_table 32 359 0 176 2 0 2 2 0 8 0 art_node 16 73 0 43 1 0 1 1 0 8 0 sysvmsgpl 40 39 0 21 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 111 0 101 1 0 1 1 0 8 0 shmpl 112 43 0 9 2 1 1 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1921 0 517 46 0 46 46 0 8 0 ffsino 272 1921 0 517 95 0 95 95 0 8 0 nchpl 144 2721 0 1113 61 0 61 61 0 8 0 uvmvnodes 72 2399 0 0 44 0 44 44 0 8 0 vnodes 208 2399 0 0 127 0 127 127 0 8 0 namei 1024 7933 0 7933 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 2 0 0 1 0 1 1 0 8 0 scxspl 192 7425 0 7425 9 8 1 7 0 8 1 plimitpl 152 44 0 36 1 0 1 1 0 8 0 sigapl 432 544 0 531 3 1 2 3 0 8 0 futexpl 56 8288 0 8288 1 0 1 1 0 8 1 knotepl 112 95 0 76 1 0 1 1 0 8 0 kqueuepl 104 96 0 94 1 0 1 1 0 8 0 pipepl 160 338 0 325 3 2 1 2 0 8 0 fdescpl 488 545 0 531 3 0 3 3 0 8 0 filepl 152 4246 0 4178 7 2 5 7 0 8 1 lockfpl 104 133 0 132 1 0 1 1 0 8 0 lockfspl 48 51 0 50 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 329 0 318 1 0 1 1 0 8 0 zombiepl 144 534 0 531 1 0 1 1 0 8 0 processpl 896 564 0 531 4 0 4 4 0 8 0 procpl 632 1293 0 1251 6 1 5 5 0 8 0 srpgc 64 2 0 2 1 0 1 1 0 8 1 sosppl 128 89 0 89 2 2 0 1 0 8 0 sockpl 384 977 0 958 6 3 3 5 0 8 1 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 5 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 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 179 0 0 22 0 22 22 0 8 0 mtagpl 80 15 0 0 1 0 1 1 0 8 0 mbufpl 256 302 0 0 18 0 18 18 0 8 0 bufpl 280 6956 0 1341 402 0 402 402 0 8 0 anonpl 16 69922 0 50179 82 1 81 81 0 125 0 amapchunkpl 152 2905 0 2748 12 2 10 11 0 158 3 amappl16 192 2455 0 1390 55 1 54 55 0 8 0 amappl15 184 61 0 57 1 0 1 1 0 8 0 amappl14 176 33 0 31 1 0 1 1 0 8 0 amappl13 168 5 0 3 1 0 1 1 0 8 0 amappl12 160 32 0 27 1 0 1 1 0 8 0 amappl11 152 164 0 149 1 0 1 1 0 8 0 amappl10 144 219 0 213 1 0 1 1 0 8 0 amappl9 136 619 0 617 1 0 1 1 0 8 0 amappl8 128 153 0 117 2 0 2 2 0 8 0 amappl7 120 312 0 297 1 0 1 1 0 8 0 amappl6 112 155 0 148 1 0 1 1 0 8 0 amappl5 104 139 0 125 1 0 1 1 0 8 0 amappl4 96 800 0 768 1 0 1 1 0 8 0 amappl3 88 129 0 122 1 0 1 1 0 8 0 amappl2 80 3402 0 3334 3 1 2 3 0 8 0 amappl1 72 21718 0 21263 26 16 10 21 0 8 0 amappl 80 1563 0 1517 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 9 1 0 1 1 0 8 0 uaddrrnd 24 547 0 531 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 547 0 531 1 0 1 1 0 8 0 vmmpekpl 168 8160 0 8128 2 0 2 2 0 8 0 vmmpepl 168 74770 0 72625 161 19 142 143 0 357 38 vmsppl 368 546 0 531 2 0 2 2 0 8 0 pdppl 4096 1101 0 1064 6 0 6 6 0 8 0 pvpl 32 219095 0 195782 192 2 190 192 0 265 1 pmappl 232 546 0 531 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 176 0 7 5 0 5 5 0 8 0