login: 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(d5a55b4b977ab193,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:500 rtable_walk_helper(fffffd8036dbca50,ffff800014976188) at rtable_walk_helper+0x58 sys/net/rtable.c:682 art_table_walk(ffff800000075780,fffffd8036dbb0c0,ffffffff81479550,ffff800014976188) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075780,fffffd8036dbb0c0,ffffffff81479550,ffff800014976188) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075780,fffffd8036dbb0e0,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb180,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb1a0,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb1c0,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb200,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb220,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb240,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb260,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb280,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb2a0,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb2e0,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb300,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb320,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb380,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb3a0,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb3c0,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb3e0,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb420,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb440,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb460,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb480,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb4c0,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb4e0,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb500,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb560,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb5a0,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb5c0,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb5e0,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb600,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbb620,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbbf20,ffffffff81479550,ffff800014976188) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075780,ffffffff81479550,ffff800014976188) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,ffffffff813dfe10,0) at rtable_walk+0xc7 sys/net/rtable.c:706 ip6_mrouter_done(fffffd80363f0d88) at ip6_mrouter_done+0xb8 sys/netinet6/ip6_mroute.c:529 rip6_detach(fffffd80363f0d88) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd80363f0d88,0) at soclose+0xb2 sys/kern/uipc_socket.c:292 soo_close(fffffd802fe17d30,ffff800014920878) at soo_close+0x40 fdrop(fffffd802fe17d30,ffff800014920878) at fdrop+0xc9 sys/kern/kern_descrip.c:1260 closef(fffffd802fe17d30,ffff800014920878) at closef+0x118 sys/kern/kern_descrip.c:1244 fdfree(ffff800014920878) at fdfree+0xf7 sys/kern/kern_descrip.c:1176 exit1(ffff800014920878,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff800014920878,ffff800014976600,ffff800014976670) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff8000149766d0) at syscall+0x508 Xsyscall(6,1,0,1,0,7f7ffffbb804) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbb7d0, count: -47 ddb> show registers rdi 0xd5a55b4b977ab193 rsi 0 rbp 0xffff800014974ec0 rbx 0xffff800000075788 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0x43f2da4d83cbd8c r12 0 r13 0xfffffd8036dbb0c0 r14 0 r15 0xd5a55b4b977ab193 rip 0xffffffff813dfe3b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800014974e80 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=174980 stat=onproc flags process=1008 proc=2000 pri=50, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff80001491f768,0xffffffff8228ea08 process=0xffff8000ffffb0a0 user=0xffff800014971000, vmspace=0xfffffd803f013dd0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 35703 87412 1 0 3 0x100083 ttyin getty 64212 317961 0 0 3 0x14200 bored sosplice 54240 426585 5309 0 2 0x2 syz-executor.0 60009 450654 5309 0 3 0x82 nanosleep syz-executor.1 5309 418859 55870 0 3 0x82 thrsleep syz-fuzzer 5309 235439 55870 0 2 0x4000482 syz-fuzzer 5309 242187 55870 0 3 0x4000082 thrsleep syz-fuzzer 5309 472241 55870 0 3 0x4000082 thrsleep syz-fuzzer 5309 137591 55870 0 3 0x4000082 thrsleep syz-fuzzer 5309 146481 55870 0 3 0x4000082 kqread syz-fuzzer 5309 52743 55870 0 3 0x4000082 thrsleep syz-fuzzer 55870 356450 60704 0 3 0x10008a pause ksh 60704 12115 12409 0 3 0x92 select sshd 12409 197669 1 0 3 0x80 select sshd 19522 412496 92693 73 3 0x100090 kqread syslogd 92693 341225 1 0 3 0x100082 netio syslogd 81694 424207 1 77 3 0x100090 poll dhclient 67328 216980 1 0 3 0x80 poll dhclient 96945 315127 0 0 2 0x14200 zerothread 74256 469317 0 0 3 0x14200 aiodoned aiodoned 67206 399509 0 0 3 0x14200 syncer update 33342 4393 0 0 3 0x14200 cleaner cleaner 91691 217080 0 0 3 0x14200 reaper reaper 83060 105562 0 0 3 0x14200 pgdaemon pagedaemon 65373 78153 0 0 3 0x14200 bored crynlk 56186 293402 0 0 3 0x14200 bored crypto 85824 62439 0 0 3 0x40014200 acpi0 acpi0 25325 20632 0 0 3 0x14200 bored softnet 32142 408703 0 0 2 0x14200 systqmp 5435 126841 0 0 3 0x14200 bored systq 77061 204393 0 0 3 0x40014200 bored softclock 72468 122260 0 0 3 0x40014200 idle0 2546 374747 0 0 3 0x14200 bored smr 1 329042 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 9555 6375K 14691K 78643K 32853 0 0 pcb 25 9K 11K 78643K 4577 0 0 rtable 163 6K 7K 78643K 1584 0 0 ifaddr 70 17K 19K 78643K 737 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 456 0 0 iov 0 0K 32K 78643K 1475 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1202 75K 77K 78643K 10060 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 222 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 0K 0K 78643K 1527 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 11267 0 0 sigio 1 0K 0K 78643K 131 0 0 proc 42 30K 54K 78643K 1113 0 0 subproc 32 2K 2K 78643K 44 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 684 0 0 in_multi 33 2K 2K 78643K 256 0 0 ether_multi 1 0K 0K 78643K 28 0 0 mrt 1 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 1942 0 0 pfkey data 0 0K 1K 78643K 4 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 85 20K 39K 78643K 27494 0 0 UVM aobj 130 4K 4K 78643K 179 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 397 0 0 NDP 16 0K 0K 78643K 196 0 0 temp 199 2720K 3363K 78643K 35556 0 0 kqueue 0 0K 0K 78643K 70 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 6 0 0 1 0 1 1 0 8 0 inpcbpl 280 4106 0 4097 1 0 1 1 0 8 0 rtentry 112 80 0 20 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 20 0 20 2 2 0 1 0 8 0 tcpcb 544 1239 0 1235 1 0 1 1 0 8 0 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 6 0 0 1 0 1 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 153 0 153 28 27 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 188 0 0 12 0 12 12 0 8 0 art_table 32 189 0 0 2 0 2 2 0 8 0 art_node 16 61 0 20 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 1525 0 1515 1 0 1 1 0 8 0 shmpl 112 177 0 49 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 20317 0 18791 50 0 50 50 0 8 0 ffsino 240 20317 0 18791 90 0 90 90 0 8 0 nchpl 144 35885 0 35401 61 40 21 61 0 8 0 uvmvnodes 72 6777 0 0 124 0 124 124 0 8 0 vnodes 200 6777 0 0 357 0 357 357 0 8 0 namei 1024 114715 0 114714 4 3 1 1 0 8 0 scsiplug 64 18 0 18 11 11 0 1 0 8 0 scxspl 192 120216 0 120216 38 37 1 6 0 8 1 plimitpl 152 272 0 265 1 0 1 1 0 8 0 sigapl 432 11441 0 11428 2 0 2 2 0 8 0 futexpl 56 172916 0 172916 3 2 1 1 0 8 1 knotepl 112 2740 0 2721 1 0 1 1 0 8 0 kqueuepl 104 3821 0 3819 1 0 1 1 0 8 0 pipepl 112 5330 0 5311 15 13 2 2 0 8 1 fdescpl 424 11442 0 11428 2 0 2 2 0 8 0 filepl 120 68599 0 68503 13 9 4 5 0 8 1 lockfpl 104 3656 0 3656 25 24 1 1 0 8 1 lockfspl 48 1273 0 1273 25 24 1 1 0 8 1 sessionpl 112 20 0 10 1 0 1 1 0 8 0 pgrppl 48 86 0 76 1 0 1 1 0 8 0 ucredpl 96 14941 0 14934 1 0 1 1 0 8 0 zombiepl 144 11429 0 11428 2 1 1 1 0 8 0 processpl 848 11457 0 11428 4 0 4 4 0 8 0 procpl 624 26295 0 26260 15 11 4 4 0 8 0 sosppl 128 108 0 108 24 24 0 1 0 8 0 sockpl 384 7926 0 7907 23 20 3 4 0 8 1 mcl64k 65536 4987 0 4987 360 336 24 64 0 8 24 mcl16k 16384 24 0 24 17 17 0 1 0 8 0 mcl12k 12288 152 0 152 38 37 1 1 0 8 1 mcl9k 9216 243 0 243 29 28 1 1 0 8 1 mcl8k 8192 129 0 129 36 35 1 1 0 8 1 mcl4k 4096 518 0 518 32 31 1 1 0 8 1 mcl2k2 2112 50 0 50 22 22 0 1 0 8 0 mcl2k 2048 68092 0 68051 42 36 6 12 0 8 0 mtagpl 80 14 0 14 8 8 0 1 0 8 0 mbufpl 256 162168 0 162107 192 186 6 36 0 8 1 bufpl 256 38295 0 31517 424 0 424 424 0 8 0 anonpl 16 937734 0 926822 342 281 61 61 0 62 16 amapchunkpl 152 46885 0 46785 119 110 9 18 0 158 3 amappl16 192 59425 0 58826 288 250 38 43 0 8 8 amappl15 184 5472 0 5471 1 0 1 1 0 8 0 amappl14 176 38 0 36 2 1 1 1 0 8 0 amappl13 168 1 0 1 1 1 0 1 0 8 0 amappl12 160 5784 0 5782 1 0 1 1 0 8 0 amappl11 152 53 0 39 1 0 1 1 0 8 0 amappl10 144 75 0 72 2 1 1 1 0 8 0 amappl9 136 540 0 536 1 0 1 1 0 8 0 amappl8 128 146 0 127 1 0 1 1 0 8 0 amappl7 120 33 0 29 1 0 1 1 0 8 0 amappl6 112 58 0 52 1 0 1 1 0 8 0 amappl5 104 5985 0 5975 1 0 1 1 0 8 0 amappl4 96 11654 0 11633 1 0 1 1 0 8 0 amappl3 88 491 0 481 1 0 1 1 0 8 0 amappl2 80 97050 0 96983 4 2 2 3 0 8 0 amappl1 72 200096 0 199682 26 17 9 19 0 8 0 amappl 80 26599 0 26565 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 64 178 0 49 3 0 3 3 0 8 0 uaddrrnd 24 11442 0 11428 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 11442 0 11428 1 0 1 1 0 8 0 vmmpekpl 168 72956 0 72929 2 0 2 2 0 8 0 vmmpepl 168 1314307 0 1312686 302 216 86 104 0 357 11 vmsppl 272 11441 0 11428 2 1 1 2 0 8 0 pdppl 4096 22890 0 22856 6 1 5 6 0 8 0 pvpl 32 2991781 0 2977785 681 530 151 230 0 265 36 pmappl 200 11441 0 11428 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 1239 0 659 26 8 18 19 0 8 0