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(93f0c722f4f88672,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:502 rtable_walk_helper(fffffd8036d68ba0,ffff800015931798) at rtable_walk_helper+0x58 sys/net/rtable.c:683 art_table_walk(ffff800000075880,fffffd8036d67320,ffffffff8119d580,ffff800015931798) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075880,fffffd8036d67320,ffffffff8119d580,ffff800015931798) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075880,fffffd8036d672e0,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d672a0,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67280,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67240,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67220,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67200,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67160,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67140,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67100,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d670e0,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67080,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67060,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67040,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67020,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67000,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d670a0,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d670c0,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67120,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67180,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d671a0,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d671c0,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d671e0,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67260,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d672c0,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67300,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67360,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d673c0,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67420,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67440,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67460,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d67f00,ffffffff8119d580,ffff800015931798) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075880,ffffffff8119d580,ffff800015931798) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,0,ffffffff81eb1460,0) at rtable_walk+0xd4 ip6_mrouter_done(fffffd803a81a600) at ip6_mrouter_done+0xb5 rip6_detach(fffffd803a81a600) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd803a81a600,0) at soclose+0xb2 sys/kern/uipc_socket.c:303 soo_close(fffffd802ad809d8,ffff8000149153d8) at soo_close+0x40 fdrop(fffffd802ad809d8,ffff8000149153d8) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd802ad809d8,ffff8000149153d8) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff8000149153d8) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff8000149153d8,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff8000149153d8,ffff800015931c30,ffff800015931c80) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800015931d00) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,1,0,1,0,7f7ffffc3f04) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc3ed0, count: -47 ddb> show registers rdi 0x93f0c722f4f88672 rsi 0 rbp 0xffff8000159304d0 rbx 0xffff800000075888 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0x1269f2d846a22110 r12 0 r13 0xfffffd8036d67320 r14 0 r15 0x93f0c722f4f88672 rip 0xffffffff81eb148b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800015930490 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=435539 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=73, nice=20 forw=0xffffffffffffffff, list=0xffff8000149149f8,0xffffffff825a03f8 process=0xffff8000ffff7450 user=0xffff80001592c000, vmspace=0xfffffd803f013aa0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 80053 395556 70919 0 2 0x2 syz-executor.1 64278 8534 70919 0 3 0x82 nanosleep syz-executor.0 11706 492295 1 0 3 0x100083 ttyin getty 39445 114366 0 0 3 0x14200 acct acct 45877 977 0 0 3 0x14200 bored sosplice 70919 407312 16184 0 3 0x82 thrsleep syz-fuzzer 70919 324021 16184 0 3 0x4000082 nanosleep syz-fuzzer 70919 369840 16184 0 3 0x4000082 thrsleep syz-fuzzer 70919 450181 16184 0 3 0x4000082 thrsleep syz-fuzzer 70919 12510 16184 0 3 0x4000082 thrsleep syz-fuzzer 70919 442563 16184 0 3 0x4000082 thrsleep syz-fuzzer 70919 427302 16184 0 3 0x4000082 thrsleep syz-fuzzer 70919 244098 16184 0 3 0x4000082 kqread syz-fuzzer 16184 393251 77760 0 3 0x10008a pause ksh 77760 43897 43410 0 3 0x92 select sshd 43410 464580 1 0 3 0x80 select sshd 42898 468075 66467 73 3 0x100090 kqread syslogd 66467 310306 1 0 3 0x100082 netio syslogd 29211 256941 1 77 3 0x100090 poll dhclient 1254 465985 1 0 3 0x80 poll dhclient 82030 250309 0 0 2 0x14200 zerothread 94257 146818 0 0 3 0x14200 aiodoned aiodoned 92627 431912 0 0 3 0x14200 syncer update 33204 366218 0 0 3 0x14200 cleaner cleaner 25038 120810 0 0 3 0x14200 reaper reaper 10931 308486 0 0 3 0x14200 pgdaemon pagedaemon 34243 139023 0 0 3 0x14200 bored crynlk 16365 101659 0 0 3 0x14200 bored crypto 31929 356816 0 0 3 0x40014200 acpi0 acpi0 239 7016 0 0 3 0x14200 bored softnet 55257 109370 0 0 2 0x14200 systqmp 47492 418339 0 0 3 0x14200 bored systq 38221 249952 0 0 3 0x40014200 bored softclock 40729 440082 0 0 3 0x40014200 idle0 6888 31193 0 0 3 0x14200 bored smr 1 243629 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 9586 6526K 7669K 78643K 37919 0 0 pcb 14 8K 8K 78643K 928 0 0 rtable 112 4K 4K 78643K 2360 0 0 ifaddr 78 18K 19K 78643K 851 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 253 0 0 iov 0 0K 32K 78643K 809 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1215 76K 77K 78643K 11936 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 137 0 0 VM map 2 0K 0K 78643K 10 0 0 sem 12 1K 1K 78643K 292 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12723 0 0 file desc 5 13K 25K 78643K 7777 0 0 sigio 0 0K 0K 78643K 64 0 0 proc 50 38K 63K 78643K 2128 0 0 subproc 32 2K 2K 78643K 444 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 777 0 0 in_multi 33 2K 2K 78643K 563 0 0 ether_multi 2 0K 0K 78643K 40 0 0 mrt 3 0K 0K 78643K 20 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 126 556K 556K 78643K 126 0 0 exec 0 0K 1K 78643K 1211 0 0 pfkey data 0 0K 4K 78643K 8 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 110 22K 31K 78643K 19308 0 0 UVM aobj 130 6K 6K 78643K 136 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 917 0 0 NDP 18 0K 0K 78643K 262 0 0 temp 212 3540K 3659K 78643K 165415 0 0 kqueue 0 0K 0K 78643K 52 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 57 0 51 1 0 1 1 0 8 0 rtpcb 80 377 0 375 1 0 1 1 0 8 0 rtentry 112 287 0 243 2 0 2 2 0 8 0 unpcb 120 5292 0 5284 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 5884 0 5884 2 2 0 2 0 8 0 tcpcb 544 1514 0 1510 1 0 1 1 0 8 0 ipq 40 20 0 20 10 10 0 1 0 8 0 ipqe 40 52 0 52 10 10 0 1 0 8 0 inpcb 280 4465 0 4457 10 9 1 2 0 8 0 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 50 0 46 1 0 1 1 0 8 0 pkpcb 40 44 0 44 15 15 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 122 0 122 20 19 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1263 0 1045 19 5 14 15 0 8 0 art_table 32 1264 0 1045 2 0 2 2 0 8 0 art_node 16 282 0 241 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 12 1 0 1 1 0 8 0 semapl 112 288 0 278 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 15262 0 13864 46 0 46 46 0 8 0 ffsino 240 15262 0 13864 83 0 83 83 0 8 0 nchpl 144 27880 0 26281 60 0 60 60 0 8 0 uvmvnodes 72 8185 0 0 149 0 149 149 0 8 0 vnodes 208 8185 0 0 431 0 431 431 0 8 0 namei 1024 113432 0 113432 4 3 1 1 0 8 1 vmpool 520 8 0 8 4 4 0 1 0 8 0 scsiplug 64 13 0 13 10 10 0 1 0 8 0 scxspl 192 76737 0 76737 25 24 1 7 0 8 1 plimitpl 152 700 0 693 1 0 1 1 0 8 0 sigapl 432 7877 0 7864 2 0 2 2 0 8 0 futexpl 56 180018 0 180018 4 3 1 1 0 8 1 knotepl 112 1750 0 1731 1 0 1 1 0 8 0 kqueuepl 104 1858 0 1856 1 0 1 1 0 8 0 pipepl 112 4054 0 4035 11 10 1 2 0 8 0 fdescpl 424 7878 0 7864 2 0 2 2 0 8 0 filepl 120 77645 0 77536 13 9 4 6 0 8 0 lockfpl 104 3101 0 3099 1 0 1 1 0 8 0 lockfspl 48 1030 0 1028 1 0 1 1 0 8 0 sessionpl 112 42 0 32 1 0 1 1 0 8 0 pgrppl 48 113 0 103 1 0 1 1 0 8 0 ucredpl 96 29649 0 29642 1 0 1 1 0 8 0 zombiepl 144 7865 0 7864 3 2 1 1 0 8 0 processpl 864 7894 0 7864 4 0 4 4 0 8 0 procpl 632 17352 0 17315 6 2 4 5 0 8 0 sosppl 128 89 0 89 17 17 0 1 0 8 0 sockpl 384 10264 0 10246 13 10 3 4 0 8 1 mcl64k 65536 1553 0 1553 115 101 14 33 0 8 14 mcl16k 16384 83 0 83 25 24 1 1 0 8 1 mcl12k 12288 272 0 272 5 4 1 1 0 8 1 mcl9k 9216 97 0 97 18 17 1 1 0 8 1 mcl8k 8192 226 0 226 11 10 1 1 0 8 1 mcl4k 4096 678 0 678 4 3 1 1 0 8 1 mcl2k2 2112 58 0 58 27 27 0 1 0 8 0 mcl2k 2048 69489 0 69451 33 27 6 22 0 8 0 mtagpl 80 203 0 195 3 2 1 1 0 8 0 mbufpl 256 162997 0 162894 88 78 10 23 0 8 2 bufpl 256 29471 0 20984 531 0 531 531 0 8 0 anonpl 16 764331 0 750984 237 170 67 73 0 62 8 amapchunkpl 152 34617 0 34510 78 73 5 18 0 158 0 amappl16 192 41536 0 40760 276 235 41 52 0 8 2 amappl15 184 2336 0 2335 1 0 1 1 0 8 0 amappl14 176 1067 0 1065 1 0 1 1 0 8 0 amappl13 168 35 0 34 3 2 1 1 0 8 0 amappl12 160 1140 0 1137 1 0 1 1 0 8 0 amappl11 152 991 0 979 1 0 1 1 0 8 0 amappl10 144 1788 0 1787 2 1 1 1 0 8 0 amappl9 136 2428 0 2419 1 0 1 1 0 8 0 amappl8 128 1972 0 1933 2 0 2 2 0 8 0 amappl7 120 1895 0 1887 1 0 1 1 0 8 0 amappl6 112 948 0 936 1 0 1 1 0 8 0 amappl5 104 1598 0 1589 1 0 1 1 0 8 0 amappl4 96 7441 0 7412 1 0 1 1 0 8 0 amappl3 88 2163 0 2158 1 0 1 1 0 8 0 amappl2 80 61910 0 61844 3 1 2 3 0 8 0 amappl1 72 147175 0 146769 28 19 9 20 0 8 0 amappl 80 17988 0 17952 1 0 1 1 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 64 135 0 6 3 0 3 3 0 8 0 uaddrrnd 24 7886 0 7864 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7886 0 7864 1 0 1 1 0 8 0 vmmpekpl 168 48532 0 48503 2 0 2 2 0 8 0 vmmpepl 168 924925 0 923088 395 290 105 113 0 357 17 vmsppl 272 7877 0 7864 4 3 1 2 0 8 0 pdppl 4096 15778 0 15744 6 1 5 6 0 8 0 pvpl 32 2148978 0 2132492 529 359 170 275 0 265 28 pmappl 200 7885 0 7872 1 0 1 1 0 8 0 extentpl 40 38 0 22 1 0 1 1 0 8 0 phpool 112 930 0 257 23 3 20 21 0 8 0