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(bff7ffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a60e00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000a25800) at in_ifdetach+0x74 sys/netinet/in.c:969 if_detach(ffff800000a25800) at if_detach+0x140 sys/net/if.c:1151 tun_clone_destroy(ffff800000a25800) at tun_clone_destroy+0x179 sys/net/if_tun.c:312 spec_close(ffff800023dd7700) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd8073281688,7,fffffd807f7c68a0,ffff800020acf160) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd8064df7d28,ffff800020acf160) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8064df7d28,ffff800020acf160) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:610 fdrop(fffffd8064df7d28,ffff800020acf160) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd8064df7d28,ffff800020acf160) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020acf160) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020acf160,19,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff800020acf160,19) at postsig+0x4e3 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff800020acf160,19) at postsig+0x4e3 sys/kern/kern_sig.c:1431 userret(ffff800020acf160) at userret+0x199 sys/kern/kern_sig.c:1889 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffd60c0, count: -15 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800023dd7530 rbx 0 rdx 0xffff800020acf160 rcx 0 rax 0 r8 0xffffffff81342423 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0xf65b55b6ef105eac r12 0 r13 0x3 r14 0xbff7ffffffffffff r15 0x1 rip 0xffffffff81eee24d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023dd74d0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.1) pid=140729 stat=onproc flags process=a proc=2000 pri=77, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020ace780,0xffff800020ace518 process=0xffff800020aed500 user=0xffff800023dd2000, vmspace=0xfffffd806e7b12e8 estcpu=36, cpticks=1, pctcpu=0.11 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 85463 239759 95077 0 2 0 syz-executor.0 85463 269852 95077 0 7 0x4000000 syz-executor.0 95077 311585 69513 0 3 0x82 nanosleep syz-executor.0 28826 202094 0 0 3 0x14200 acct acct 41699 284257 0 0 3 0x14200 bored sosplice 69513 284221 17379 0 3 0x82 thrsleep syz-fuzzer 69513 426113 17379 0 3 0x4000082 nanosleep syz-fuzzer 69513 280939 17379 0 3 0x4000082 thrsleep syz-fuzzer 69513 243939 17379 0 3 0x4000082 thrsleep syz-fuzzer 69513 360901 17379 0 3 0x4000082 thrsleep syz-fuzzer 69513 355612 17379 0 3 0x4000082 nanosleep syz-fuzzer 69513 252674 17379 0 2 0x4000082 syz-fuzzer 69513 364783 17379 0 3 0x4000082 thrsleep syz-fuzzer 69513 279798 17379 0 3 0x4000082 thrsleep syz-fuzzer 69513 379666 17379 0 3 0x4000082 thrsleep syz-fuzzer 17379 506442 20414 0 3 0x10008a pause ksh 20414 412988 61413 0 3 0x92 select sshd 28704 58304 1 0 3 0x100083 ttyin getty 61413 307337 1 0 3 0x80 select sshd 82121 435366 58876 74 3 0x100092 bpf pflogd 58876 412624 1 0 3 0x80 netio pflogd 32011 200659 46912 73 3 0x100090 kqread syslogd 46912 149782 1 0 3 0x100082 netio syslogd 19183 32351 1 77 2 0x100090 dhclient 73895 252983 1 0 3 0x80 poll dhclient 66442 74472 0 0 2 0x14200 zerothread 77957 392357 0 0 3 0x14200 aiodoned aiodoned 14312 243090 0 0 3 0x14200 syncer update 90910 304586 0 0 3 0x14200 cleaner cleaner 18968 257752 0 0 3 0x14200 reaper reaper 63428 276180 0 0 3 0x14200 pgdaemon pagedaemon 4569 98710 0 0 3 0x14200 bored crynlk 69455 248182 0 0 3 0x14200 bored crypto 6594 63036 0 0 3 0x40014200 acpi0 acpi0 60782 436746 0 0 3 0x40014200 idle1 33665 89759 0 0 2 0x14200 softnet 74031 296286 0 0 2 0x14200 systqmp 95740 15641 0 0 3 0x14200 bored systq 26277 197745 0 0 3 0x40014200 bored softclock 7518 343406 0 0 3 0x40014200 idle0 31791 344657 0 0 3 0x14200 bored smr 1 397402 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 9549 6556K 7970K 78643K 12241 0 pcb 13 8K 8K 78643K 136 0 rtable 101 4K 4K 78643K 444 0 ifaddr 84 15K 16K 78643K 169 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1513 0 iov 0 0K 24K 78643K 106 0 mount 1 1K 1K 78643K 1 0 vnodes 1238 78K 78K 78643K 1769 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 7 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 121 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 5 13K 25K 78643K 547 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 95K 78643K 621 0 subproc 23 1K 2K 78643K 85 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 60 0 in_multi 54 3K 3K 78643K 101 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 72 318K 318K 78643K 72 0 exec 0 0K 1K 78643K 290 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 130 55K 55K 78643K 2891 0 UVM aobj 28 4K 4K 78643K 30 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 2K 78643K 131 0 NDP 15 0K 0K 78643K 38 0 temp 149 3023K 3663K 78643K 11996 0 kqueue 0 0K 0K 78643K 5 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 14 0 10 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 490 0 488 1 0 1 1 0 8 0 rtentry 112 80 0 41 2 0 2 2 0 8 0 unpcb 120 300 0 290 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 161 0 157 1 0 1 1 0 8 0 inpcb 280 638 0 631 4 2 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 10 0 6 1 0 1 1 0 8 0 ppxss 1128 5 0 5 2 1 1 1 0 8 1 pffrag 232 16 0 16 1 0 1 1 0 482 1 pffrnode 88 16 0 16 1 0 1 1 0 8 1 pffrent 40 591 0 591 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 43 0 12 1 0 1 1 0 8 0 pfstkey 112 44 0 13 1 0 1 1 0 8 0 pfstate 328 44 0 13 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 256 350 0 136 16 2 14 14 0 8 0 art_table 32 351 0 136 2 0 2 2 0 8 0 art_node 16 79 0 41 1 0 1 1 0 8 0 sysvmsgpl 40 68 0 32 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 119 0 109 1 0 1 1 0 8 0 shmpl 112 28 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2201 0 796 46 0 46 46 0 8 0 ffsino 272 2201 0 796 95 0 95 95 0 8 0 nchpl 144 3264 0 2815 61 41 20 61 0 8 0 uvmvnodes 72 2683 0 0 49 0 49 49 0 8 0 vnodes 208 2683 0 0 142 0 142 142 0 8 0 namei 1024 9744 0 9744 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 560 8 0 2 1 0 1 1 0 8 0 scxspl 192 9604 0 9603 10 8 2 6 0 8 1 plimitpl 152 62 0 54 1 0 1 1 0 8 0 sigapl 432 737 0 722 3 1 2 3 0 8 0 futexpl 56 11770 0 11770 1 0 1 1 0 8 1 knotepl 112 355 0 336 1 0 1 1 0 8 0 kqueuepl 104 701 0 699 1 0 1 1 0 8 0 pipepl 160 460 0 442 4 2 2 2 0 8 1 fdescpl 488 738 0 722 3 0 3 3 0 8 0 filepl 152 6125 0 6035 7 1 6 6 0 8 2 lockfpl 104 247 0 246 1 0 1 1 0 8 0 lockfspl 48 64 0 63 1 0 1 1 0 8 0 sessionpl 112 21 0 10 1 0 1 1 0 8 0 pgrppl 48 24 0 13 1 0 1 1 0 8 0 ucredpl 96 438 0 429 1 0 1 1 0 8 0 zombiepl 144 723 0 722 1 0 1 1 0 8 0 processpl 896 755 0 722 4 0 4 4 0 8 0 procpl 632 1944 0 1901 5 0 5 5 0 8 0 srpgc 64 8 0 6 4 3 1 1 0 8 0 sosppl 128 1 0 1 1 1 0 1 0 8 0 sockpl 384 1439 0 1420 5 1 4 5 0 8 2 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 160 0 0 19 0 19 19 0 8 0 mtagpl 80 24 0 0 1 0 1 1 0 8 0 mbufpl 256 321 0 0 19 0 19 19 0 8 0 bufpl 280 7792 0 1344 461 0 461 461 0 8 0 anonpl 16 99089 0 78715 99 15 84 97 0 125 1 amapchunkpl 152 4726 0 4563 12 4 8 11 0 158 0 amappl16 192 4205 0 3091 78 19 59 68 0 8 2 amappl15 184 64 0 60 1 0 1 1 0 8 0 amappl14 176 263 0 256 1 0 1 1 0 8 0 amappl13 168 8 0 8 1 1 0 1 0 8 0 amappl12 160 2 0 1 2 1 1 1 0 8 0 amappl11 152 67 0 52 1 0 1 1 0 8 0 amappl10 144 16 0 9 1 0 1 1 0 8 0 amappl9 136 790 0 785 1 0 1 1 0 8 0 amappl8 128 308 0 278 2 0 2 2 0 8 0 amappl7 120 123 0 110 1 0 1 1 0 8 0 amappl6 112 67 0 61 1 0 1 1 0 8 0 amappl5 104 159 0 143 1 0 1 1 0 8 0 amappl4 96 1001 0 967 2 1 1 2 0 8 0 amappl3 88 131 0 124 1 0 1 1 0 8 0 amappl2 80 4795 0 4721 3 1 2 3 0 8 0 amappl1 72 26793 0 26337 26 16 10 21 0 8 0 amappl 80 2256 0 2205 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 29 0 2 1 0 1 1 0 8 0 uaddrrnd 24 746 0 724 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 746 0 724 1 0 1 1 0 8 0 vmmpekpl 168 9775 0 9742 2 0 2 2 0 8 0 vmmpepl 168 100606 0 98286 168 27 141 145 0 357 35 vmsppl 368 745 0 724 3 0 3 3 0 8 0 pdppl 4096 1499 0 1454 6 0 6 6 0 8 0 pvpl 32 287631 0 264073 225 26 199 225 0 265 8 pmappl 232 745 0 724 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 175 0 5 5 0 5 5 0 8 0