kernel: protection fault trap, code=0 Stopped at mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace mrouter6_rtwalk_delete(9370826323f28c05,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:502 rtable_walk_helper(fffffd8036d69a10,ffff800015942158) at rtable_walk_helper+0x58 sys/net/rtable.c:683 art_table_walk(ffff800000075880,fffffd8036d68340,ffffffff8119d580,ffff800015942158) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075880,fffffd8036d68340,ffffffff8119d580,ffff800015942158) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075880,fffffd8036d68320,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68300,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d682e0,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d682a0,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68260,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68240,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d681e0,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d681c0,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68180,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68140,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68120,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d680c0,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d680a0,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68080,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68040,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68000,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68020,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68060,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d680e0,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68100,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68160,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d681a0,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68200,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68220,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68280,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d682c0,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68380,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d683a0,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68440,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68480,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68f60,ffffffff8119d580,ffff800015942158) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075880,ffffffff8119d580,ffff800015942158) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,0,ffffffff81eb1460,0) at rtable_walk+0xd4 ip6_mrouter_done(fffffd80363d4c08) at ip6_mrouter_done+0xb5 rip6_detach(fffffd80363d4c08) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd80363d4c08,0) at soclose+0xb2 sys/kern/uipc_socket.c:303 soo_close(fffffd803622de18,ffff8000ffff2290) at soo_close+0x40 fdrop(fffffd803622de18,ffff8000ffff2290) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd803622de18,ffff8000ffff2290) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff8000ffff2290) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff8000ffff2290,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff8000ffff2290,ffff8000159425f0,ffff800015942640) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff8000159426c0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,1,0,1,0,7f7ffffd9de4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9db0, count: -47 ddb> show registers rdi 0x9370826323f28c05 rsi 0 rbp 0xffff800015940e90 rbx 0xffff800000075888 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0x68b7ee0652a291b7 r12 0 r13 0xfffffd8036d68340 r14 0 r15 0x9370826323f28c05 rip 0xffffffff81eb148b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800015940e50 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=418872 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2508,0xffffffff825a03f8 process=0xffff8000148a30f8 user=0xffff80001593d000, vmspace=0xfffffd803f013dd0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 28735 228413 83675 0 2 0x2 syz-executor.1 27625 132588 83675 0 3 0x82 nanosleep syz-executor.0 70381 336970 1 0 3 0x100083 ttyin getty 29223 398160 0 0 3 0x14200 bored sosplice 83675 223494 68402 0 3 0x82 thrsleep syz-fuzzer 83675 42154 68402 0 3 0x4000082 nanosleep syz-fuzzer 83675 208291 68402 0 3 0x4000082 thrsleep syz-fuzzer 83675 211407 68402 0 3 0x4000082 thrsleep syz-fuzzer 83675 299906 68402 0 3 0x4000082 kqread syz-fuzzer 83675 125205 68402 0 3 0x4000082 thrsleep syz-fuzzer 83675 84758 68402 0 3 0x4000082 thrsleep syz-fuzzer 68402 138412 83434 0 3 0x10008a pause ksh 83434 167483 28108 0 3 0x92 select sshd 28108 480911 1 0 3 0x80 select sshd 48663 414431 95285 73 3 0x100090 kqread syslogd 95285 12485 1 0 3 0x100082 netio syslogd 21242 255495 1 77 3 0x100090 poll dhclient 40271 519613 1 0 3 0x80 poll dhclient 20043 31790 0 0 2 0x14200 zerothread 49027 338601 0 0 3 0x14200 aiodoned aiodoned 75288 175631 0 0 3 0x14200 syncer update 26302 384339 0 0 3 0x14200 cleaner cleaner 48524 384861 0 0 3 0x14200 reaper reaper 88866 257183 0 0 3 0x14200 pgdaemon pagedaemon 49853 268633 0 0 3 0x14200 bored crynlk 86872 187302 0 0 3 0x14200 bored crypto 22320 9011 0 0 3 0x40014200 acpi0 acpi0 90072 234546 0 0 3 0x14200 bored softnet 53659 67491 0 0 2 0x14200 systqmp 33846 502961 0 0 3 0x14200 bored systq 77873 367823 0 0 3 0x40014200 bored softclock 65366 85801 0 0 3 0x40014200 idle0 34394 373377 0 0 3 0x14200 bored smr 1 246824 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9561 6501K 7398K 78643K 22434 0 0 pcb 15 8K 8K 78643K 610 0 0 rtable 117 4K 4K 78643K 1783 0 0 ifaddr 69 18K 20K 78643K 563 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 270 0 0 iov 0 0K 16K 78643K 459 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1202 75K 77K 78643K 5674 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 55 0 0 VM map 2 0K 0K 78643K 12 0 0 sem 12 0K 1K 78643K 1132 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12723 0 0 file desc 5 13K 25K 78643K 4883 0 0 sigio 0 0K 0K 78643K 113 0 0 proc 50 38K 63K 78643K 1713 0 0 subproc 32 2K 2K 78643K 393 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 10313 0 0 in_multi 33 2K 2K 78643K 416 0 0 ether_multi 2 0K 0K 78643K 21 0 0 mrt 3 0K 0K 78643K 19 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 132 583K 583K 78643K 132 0 0 exec 0 0K 1K 78643K 878 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 120 22K 31K 78643K 12585 0 0 UVM aobj 130 4K 4K 78643K 143 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 536 0 0 NDP 15 0K 0K 78643K 181 0 0 temp 191 3540K 4182K 78643K 85857 0 0 kqueue 0 0K 0K 78643K 57 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 50 0 43 1 0 1 1 0 8 0 rtpcb 80 258 0 256 1 0 1 1 0 8 0 rtentry 112 262 0 217 2 0 2 2 0 8 0 unpcb 120 1811 0 1803 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 sackhl 24 3 0 3 3 3 0 1 0 8 0 tcpqe 32 7029 0 7029 1 1 0 1 0 8 0 tcpcb 544 960 0 956 1 0 1 1 0 8 0 ipq 40 9 0 9 5 5 0 1 0 8 0 ipqe 40 25 0 25 5 5 0 1 0 8 0 inpcb 280 8033 0 8015 20 17 3 4 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 46 0 42 1 0 1 1 0 8 0 pkpcb 40 12 0 12 6 6 0 1 0 8 0 ppxss 1128 70 0 70 20 19 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1183 0 963 17 3 14 14 0 8 0 art_table 32 1184 0 963 2 0 2 2 0 8 0 art_node 16 257 0 215 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 20 4 3 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 1130 0 1120 1 0 1 1 0 8 0 shmpl 112 141 0 13 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 8675 0 7279 46 0 46 46 0 8 0 ffsino 240 8675 0 7279 83 0 83 83 0 8 0 nchpl 144 16327 0 14730 60 0 60 60 0 8 0 uvmvnodes 72 6817 0 0 124 0 124 124 0 8 0 vnodes 208 6817 0 0 359 0 359 359 0 8 0 namei 1024 56710 0 56710 6 5 1 1 0 8 1 vmpool 520 10 0 10 5 5 0 1 0 8 0 scsiplug 64 7 0 7 5 5 0 1 0 8 0 scxspl 192 56541 0 56541 18 17 1 7 0 8 1 plimitpl 152 451 0 444 1 0 1 1 0 8 0 sigapl 432 4996 0 4983 2 0 2 2 0 8 0 futexpl 56 109880 0 109880 6 5 1 1 0 8 1 knotepl 112 3770 0 3751 5 4 1 2 0 8 0 kqueuepl 104 4942 0 4940 1 0 1 1 0 8 0 pipepl 112 2374 0 2355 6 5 1 2 0 8 0 fdescpl 424 4997 0 4983 2 0 2 2 0 8 0 filepl 120 44140 0 44041 24 20 4 5 0 8 0 lockfpl 104 1514 0 1513 1 0 1 1 0 8 0 lockfspl 48 530 0 529 1 0 1 1 0 8 0 sessionpl 112 43 0 33 1 0 1 1 0 8 0 pgrppl 48 91 0 81 1 0 1 1 0 8 0 ucredpl 96 5899 0 5892 1 0 1 1 0 8 0 zombiepl 144 4986 0 4985 3 2 1 1 0 8 0 processpl 864 5014 0 4985 4 0 4 4 0 8 0 procpl 632 10865 0 10830 4 0 4 4 0 8 0 sosppl 128 38 0 38 10 10 0 1 0 8 0 sockpl 384 10160 0 10140 30 26 4 6 0 8 1 mcl64k 65536 835 0 835 88 87 1 33 0 8 1 mcl16k 16384 24 0 24 17 17 0 1 0 8 0 mcl12k 12288 96 0 96 15 14 1 1 0 8 1 mcl9k 9216 54 0 54 20 19 1 1 0 8 1 mcl8k 8192 88 0 88 16 15 1 1 0 8 1 mcl4k 4096 390 0 390 8 7 1 1 0 8 1 mcl2k2 2112 30 0 30 15 14 1 1 0 8 1 mcl2k 2048 51375 0 51332 24 18 6 14 0 8 0 mtagpl 80 132 0 124 3 2 1 1 0 8 0 mbufpl 256 116503 0 116399 55 47 8 24 0 8 0 bufpl 256 17465 0 10648 427 0 427 427 0 8 0 anonpl 16 522324 0 510264 209 138 71 75 0 62 10 amapchunkpl 152 23509 0 23381 69 58 11 16 0 158 5 amappl16 192 27598 0 26858 193 147 46 51 0 8 8 amappl15 184 846 0 846 6 5 1 1 0 8 1 amappl14 176 1225 0 1221 1 0 1 1 0 8 0 amappl13 168 1005 0 1005 4 4 0 1 0 8 0 amappl12 160 694 0 692 2 1 1 1 0 8 0 amappl11 152 459 0 447 1 0 1 1 0 8 0 amappl10 144 227 0 226 4 3 1 1 0 8 0 amappl9 136 1077 0 1070 1 0 1 1 0 8 0 amappl8 128 569 0 531 2 0 2 2 0 8 0 amappl7 120 359 0 352 1 0 1 1 0 8 0 amappl6 112 433 0 422 1 0 1 1 0 8 0 amappl5 104 1012 0 1002 1 0 1 1 0 8 0 amappl4 96 5535 0 5508 1 0 1 1 0 8 0 amappl3 88 1047 0 1041 1 0 1 1 0 8 0 amappl2 80 38546 0 38478 3 1 2 3 0 8 0 amappl1 72 100530 0 100114 27 18 9 20 0 8 0 amappl 80 11435 0 11394 4 2 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 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 142 0 13 3 0 3 3 0 8 0 uaddrrnd 24 5007 0 4983 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5007 0 4983 1 0 1 1 0 8 0 vmmpekpl 168 32443 0 32417 2 0 2 2 0 8 0 vmmpepl 168 592169 0 590362 350 243 107 112 0 357 20 vmsppl 272 4996 0 4983 4 3 1 2 0 8 0 pdppl 4096 10020 0 9986 6 1 5 6 0 8 0 pvpl 32 1442330 0 1427190 549 319 230 280 0 265 88 pmappl 200 5006 0 4993 1 0 1 1 0 8 0 extentpl 40 38 0 22 1 0 1 1 0 8 0 phpool 112 758 0 205 17 0 17 17 0 8 0