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(38cd8aac8c543215,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:502 rtable_walk_helper(fffffd8036d69a00,ffff800015953a08) at rtable_walk_helper+0x58 sys/net/rtable.c:683 art_table_walk(ffff800000075880,fffffd8036d68000,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075880,fffffd8036d68000,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075880,fffffd8036d68020,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68040,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68060,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d680a0,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d680c0,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d680e0,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68140,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68180,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d681a0,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d681e0,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68200,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68220,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68240,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d682c0,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68320,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68340,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d683a0,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d683c0,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68420,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68460,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68480,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d684a0,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d684c0,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68500,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68540,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d685a0,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d685c0,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68600,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68620,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68640,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d68f60,ffffffff81c07910,ffff800015953a08) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075880,ffffffff81c07910,ffff800015953a08) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,0,ffffffff81f40050,0) at rtable_walk+0xd4 ip6_mrouter_done(fffffd8037027900) at ip6_mrouter_done+0xb5 rip6_detach(fffffd8037027900) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd8037027900,0) at soclose+0xb2 sys/kern/uipc_socket.c:303 soo_close(fffffd803622af08,ffff800014914c70) at soo_close+0x40 fdrop(fffffd803622af08,ffff800014914c70) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd803622af08,ffff800014914c70) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff800014914c70) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff800014914c70,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff800014914c70,ffff800015953ea0,ffff800015953ef0) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800015953f70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,1,0,1,0,7f7ffffbe824) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe7f0, count: -47 ddb> show registers rdi 0x38cd8aac8c543215 rsi 0 rbp 0xffff800015952740 rbx 0xffff800000075888 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0xe012b025bf8e3bf2 r12 0 r13 0xfffffd8036d68000 r14 0 r15 0x38cd8aac8c543215 rip 0xffffffff81f4007b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800015952700 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=227691 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff8000149149f8,0xffffffff825a0168 process=0xffff8000148a26d8 user=0xffff80001594f000, 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 5571 416228 48960 0 2 0 syz-executor.1 5571 85080 48960 0 3 0x4000080 netio syz-executor.1 48960 26272 11756 0 3 0x82 nanosleep syz-executor.1 10068 442744 11756 0 3 0x82 nanosleep syz-executor.0 66974 424845 1 0 3 0x100083 ttyin getty 92043 342275 0 0 3 0x14200 bored sosplice 11756 428081 9907 0 3 0x82 thrsleep syz-fuzzer 11756 44720 9907 0 3 0x4000082 thrsleep syz-fuzzer 11756 140262 9907 0 3 0x4000082 thrsleep syz-fuzzer 11756 474998 9907 0 3 0x4000082 thrsleep syz-fuzzer 11756 340967 9907 0 3 0x4000082 kqread syz-fuzzer 11756 480305 9907 0 3 0x4000082 thrsleep syz-fuzzer 11756 386913 9907 0 3 0x4000082 thrsleep syz-fuzzer 9907 250246 87751 0 3 0x10008a pause ksh 87751 509446 51261 0 3 0x92 select sshd 51261 9606 1 0 3 0x80 select sshd 18461 118650 57885 73 3 0x100090 kqread syslogd 57885 206019 1 0 3 0x100082 netio syslogd 16847 354851 1 77 3 0x100090 poll dhclient 24879 391638 1 0 3 0x80 poll dhclient 80969 505925 0 0 2 0x14200 zerothread 92781 417293 0 0 3 0x14200 aiodoned aiodoned 27633 313897 0 0 3 0x14200 syncer update 21869 61571 0 0 3 0x14200 cleaner cleaner 92248 469924 0 0 3 0x14200 reaper reaper 66360 348674 0 0 3 0x14200 pgdaemon pagedaemon 7248 303511 0 0 3 0x14200 bored crynlk 27778 413167 0 0 3 0x14200 bored crypto 20400 232023 0 0 3 0x40014200 acpi0 acpi0 74374 149694 0 0 3 0x14200 bored softnet 28930 176653 0 0 2 0x14200 systqmp 52939 219517 0 0 3 0x14200 bored systq 52864 449997 0 0 3 0x40014200 bored softclock 52819 225799 0 0 3 0x40014200 idle0 98965 37129 0 0 3 0x14200 bored smr 1 291604 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 9512 6350K 14676K 78643K 12585 0 0 pcb 15 8K 8K 78643K 77 0 0 rtable 109 3K 4K 78643K 424 0 0 ifaddr 58 13K 13K 78643K 127 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 56 0 0 iov 0 0K 16K 78643K 74 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1221 77K 77K 78643K 1999 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 12 0 0 VM map 2 0K 0K 78643K 4 0 0 sem 12 0K 0K 78643K 84 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12723 0 0 file desc 6 17K 25K 78643K 807 0 0 sigio 0 0K 0K 78643K 12 0 0 proc 48 38K 63K 78643K 523 0 0 subproc 32 2K 2K 78643K 85 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 63 0 0 in_multi 33 2K 2K 78643K 78 0 0 ether_multi 2 0K 0K 78643K 2 0 0 mrt 2 0K 0K 78643K 3 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 96 424K 424K 78643K 96 0 0 exec 0 0K 1K 78643K 332 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 90 20K 25K 78643K 2742 0 0 UVM aobj 29 2K 2K 78643K 33 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 61 0 0 NDP 14 0K 0K 78643K 39 0 0 temp 162 3533K 3601K 78643K 9293 0 0 kqueue 0 0K 0K 78643K 8 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 12 0 6 1 0 1 1 0 8 0 rtpcb 80 52 0 50 1 0 1 1 0 8 0 rtentry 112 76 0 32 2 0 2 2 0 8 0 unpcb 120 293 0 283 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 1986 0 1986 1 1 0 1 0 8 0 tcpcb 544 167 0 163 1 0 1 1 0 8 0 inpcb 280 441 0 432 1 0 1 1 0 8 0 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 10 0 6 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 ppxss 1128 7 0 7 3 2 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 348 0 132 15 1 14 14 0 8 0 art_table 32 349 0 132 2 0 2 2 0 8 0 art_node 16 75 0 34 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 18 4 3 1 1 0 8 0 semapl 112 82 0 72 1 0 1 1 0 8 0 shmpl 112 31 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2649 0 1260 46 0 46 46 0 8 0 ffsino 240 2649 0 1260 83 0 83 83 0 8 0 nchpl 144 3908 0 2306 60 0 60 60 0 8 0 uvmvnodes 72 3222 0 0 59 0 59 59 0 8 0 vnodes 208 3222 0 0 170 0 170 170 0 8 0 namei 1024 11453 0 11453 2 1 1 1 0 8 1 vmpool 520 2 0 2 1 1 0 1 0 8 0 scsiplug 64 1 0 1 1 0 1 1 0 8 1 scxspl 192 10893 0 10893 15 14 1 7 0 8 1 plimitpl 152 82 0 75 1 0 1 1 0 8 0 sigapl 432 970 0 956 2 0 2 2 0 8 0 futexpl 56 12634 0 12634 1 0 1 1 0 8 1 knotepl 112 268 0 249 1 0 1 1 0 8 0 kqueuepl 104 221 0 219 1 0 1 1 0 8 0 pipepl 112 570 0 549 2 1 1 2 0 8 0 fdescpl 424 971 0 956 2 0 2 2 0 8 0 filepl 120 5704 0 5602 5 1 4 5 0 8 0 lockfpl 104 319 0 318 1 0 1 1 0 8 0 lockfspl 48 111 0 110 1 0 1 1 0 8 0 sessionpl 112 21 0 11 1 0 1 1 0 8 0 pgrppl 48 27 0 17 1 0 1 1 0 8 0 ucredpl 96 968 0 961 1 0 1 1 0 8 0 zombiepl 144 958 0 957 2 1 1 1 0 8 0 processpl 864 987 0 957 4 0 4 4 0 8 0 procpl 632 1918 0 1881 5 1 4 5 0 8 0 sosppl 128 12 0 12 3 2 1 1 0 8 1 sockpl 384 804 0 783 4 1 3 4 0 8 0 mcl64k 65536 27 0 27 2 1 1 1 0 8 1 mcl16k 16384 3 0 3 1 1 0 1 0 8 0 mcl12k 12288 19 0 19 2 1 1 1 0 8 1 mcl9k 9216 8 0 8 3 2 1 1 0 8 1 mcl8k 8192 10 0 10 3 2 1 1 0 8 1 mcl4k 4096 38 0 38 2 1 1 1 0 8 1 mcl2k2 2112 7 0 7 4 3 1 1 0 8 1 mcl2k 2048 58454 0 58398 18 10 8 16 0 8 0 mtagpl 80 31 0 26 2 1 1 1 0 8 0 mbufpl 256 97177 0 97061 13 5 8 10 0 8 0 bufpl 256 8757 0 2703 379 0 379 379 0 8 0 anonpl 16 109568 0 99570 84 17 67 67 0 62 14 amapchunkpl 152 4792 0 4686 19 13 6 15 0 158 1 amappl16 192 4869 0 4173 68 25 43 47 0 8 8 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 163 0 159 1 0 1 1 0 8 0 amappl13 168 8 0 8 1 0 1 1 0 8 1 amappl12 160 172 0 169 1 0 1 1 0 8 0 amappl11 152 294 0 280 1 0 1 1 0 8 0 amappl10 144 13 0 13 3 2 1 1 0 8 1 amappl9 136 834 0 825 1 0 1 1 0 8 0 amappl8 128 385 0 363 1 0 1 1 0 8 0 amappl7 120 48 0 43 1 0 1 1 0 8 0 amappl6 112 312 0 301 1 0 1 1 0 8 0 amappl5 104 329 0 319 1 0 1 1 0 8 0 amappl4 96 924 0 896 1 0 1 1 0 8 0 amappl3 88 516 0 511 1 0 1 1 0 8 0 amappl2 80 6766 0 6690 3 1 2 3 0 8 0 amappl1 72 27211 0 26796 26 16 10 20 0 8 0 amappl 80 2187 0 2150 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 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 32 0 4 1 0 1 1 0 8 0 uaddrrnd 24 973 0 956 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 973 0 956 1 0 1 1 0 8 0 vmmpekpl 168 10070 0 10040 2 0 2 2 0 8 0 vmmpepl 168 120767 0 118936 127 27 100 100 0 357 20 vmsppl 272 970 0 956 2 1 1 2 0 8 0 pdppl 4096 1952 0 1916 6 1 5 6 0 8 0 pvpl 32 362081 0 348950 221 30 191 215 0 265 63 pmappl 200 972 0 958 1 0 1 1 0 8 0 extentpl 40 38 0 22 1 0 1 1 0 8 0 phpool 112 533 0 26 15 0 15 15 0 8 0