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(43e9e919544e62ac,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:502 rtable_walk_helper(fffffd803704ba10,ffff80001592bd88) at rtable_walk_helper+0x58 sys/net/rtable.c:683 art_table_walk(ffff800000075880,fffffd803704a220,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075880,fffffd803704a220,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075880,fffffd803704a200,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a1e0,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a180,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a0e0,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a0c0,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a0a0,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a080,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a060,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a020,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a000,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a040,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a100,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a120,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a140,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a160,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a1a0,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a1c0,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a240,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a260,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a280,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a2a0,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a2e0,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a300,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a340,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a360,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a3e0,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a440,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a480,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a4a0,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704a4c0,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd803704af40,ffffffff818c2060,ffff80001592bd88) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075880,ffffffff818c2060,ffff80001592bd88) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,0,ffffffff812d1f50,0) at rtable_walk+0xd4 ip6_mrouter_done(fffffd80363d2488) at ip6_mrouter_done+0xb5 rip6_detach(fffffd80363d2488) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd80363d2488,0) at soclose+0xb2 sys/kern/uipc_socket.c:303 soo_close(fffffd8036220e18,ffff8000ffff2780) at soo_close+0x40 fdrop(fffffd8036220e18,ffff8000ffff2780) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd8036220e18,ffff8000ffff2780) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff8000ffff2780) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff8000ffff2780,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff8000ffff2780,ffff80001592c220,ffff80001592c270) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff80001592c2f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,1,0,1,0,7f7ffffbe3e4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe3b0, count: -47 ddb> show registers rdi 0x43e9e919544e62ac rsi 0 rbp 0xffff80001592aac0 rbx 0xffff800000075888 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0x484ab9bf288cfb06 r12 0 r13 0xfffffd803704a220 r14 0 r15 0x43e9e919544e62ac rip 0xffffffff812d1f7b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001592aa80 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=325855 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2018,0xffffffff8258b368 process=0xffff8000ffff7450 user=0xffff800015927000, vmspace=0xfffffd803f013cc0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 27094 43138 52174 0 3 0x82 nanosleep syz-executor.1 54966 365782 52174 0 2 0x2 syz-executor.0 85383 389490 0 0 3 0x14200 acct acct 69672 13140 0 0 3 0x14200 bored sosplice 52174 490025 69994 0 3 0x82 thrsleep syz-fuzzer 52174 352273 69994 0 3 0x4000082 nanosleep syz-fuzzer 52174 142296 69994 0 3 0x4000082 thrsleep syz-fuzzer 52174 66261 69994 0 3 0x4000082 thrsleep syz-fuzzer 52174 163949 69994 0 3 0x4000082 thrsleep syz-fuzzer 52174 278376 69994 0 3 0x4000082 kqread syz-fuzzer 52174 355185 69994 0 3 0x4000082 thrsleep syz-fuzzer 69994 65520 3125 0 3 0x10008a pause ksh 3125 36284 57688 0 3 0x92 select sshd 86611 196880 1 0 3 0x100083 ttyin getty 57688 280404 1 0 3 0x80 select sshd 82560 111030 87035 73 3 0x100090 kqread syslogd 87035 23405 1 0 3 0x100082 netio syslogd 71466 236338 1 77 3 0x100090 poll dhclient 38304 153386 1 0 3 0x80 poll dhclient 66228 500805 0 0 2 0x14200 zerothread 87357 217453 0 0 3 0x14200 aiodoned aiodoned 49625 392467 0 0 3 0x14200 syncer update 65267 352285 0 0 3 0x14200 cleaner cleaner 83980 108787 0 0 3 0x14200 reaper reaper 54625 436629 0 0 3 0x14200 pgdaemon pagedaemon 99294 60516 0 0 3 0x14200 bored crynlk 51694 241668 0 0 3 0x14200 bored crypto 80915 160569 0 0 3 0x40014200 acpi0 acpi0 54784 106792 0 0 3 0x14200 bored softnet 20581 469753 0 0 2 0x14200 systqmp 6857 304610 0 0 3 0x14200 bored systq 25074 115477 0 0 3 0x40014200 bored softclock 21817 359757 0 0 3 0x40014200 idle0 80987 206647 0 0 3 0x14200 bored smr 1 192594 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 9535 6365K 7189K 78643K 27572 0 0 pcb 15 8K 8K 78643K 613 0 0 rtable 136 13K 13K 78643K 3056 0 0 ifaddr 66 21K 26K 78643K 1112 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 303 0 0 iov 0 0K 32K 78643K 1958 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1201 75K 77K 78643K 8170 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 62 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 11 1K 1K 78643K 11 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12723 0 0 file desc 5 13K 25K 78643K 10447 0 0 sigio 0 0K 0K 78643K 58 0 0 proc 49 38K 63K 78643K 2069 0 0 subproc 32 2K 2K 78643K 527 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 795 0 0 in_multi 33 2K 2K 78643K 697 0 0 ether_multi 1 0K 0K 78643K 39 0 0 mrt 1 0K 0K 78643K 10 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 1274 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 122 23K 31K 78643K 25019 0 0 UVM aobj 130 4K 4K 78643K 153 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 645 0 0 NDP 14 0K 0K 78643K 343 0 0 temp 183 3535K 4175K 78643K 145199 0 0 kqueue 0 0K 0K 78643K 40 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 67 0 61 1 0 1 1 0 8 0 rtpcb 80 306 0 304 1 0 1 1 0 8 0 rtentry 112 365 0 318 2 0 2 2 0 8 0 unpcb 120 2092 0 2084 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 109 0 109 6 6 0 1 0 8 0 tcpcb 544 1291 0 1287 1 0 1 1 0 8 0 ipq 40 8 0 8 4 4 0 1 0 8 0 ipqe 40 18 0 18 4 4 0 1 0 8 0 inpcb 280 3557 0 3548 6 5 1 2 0 8 0 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 62 0 58 1 0 1 1 0 8 0 pkpcb 40 39 0 39 8 8 0 1 0 8 0 swfcl 56 16 0 0 1 0 1 1 0 8 0 ppxss 1128 200 0 200 24 24 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1548 0 1300 19 3 16 16 0 8 0 art_table 32 1549 0 1300 3 0 3 3 0 8 0 art_node 16 341 0 298 1 0 1 1 0 8 0 sysvmsgpl 40 91 0 68 1 0 1 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 151 0 23 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 18315 0 16852 48 0 48 48 0 8 0 ffsino 240 18315 0 16852 87 0 87 87 0 8 0 nchpl 144 32315 0 30729 60 0 60 60 0 8 0 uvmvnodes 72 6574 0 0 120 0 120 120 0 8 0 vnodes 208 6574 0 0 346 0 346 346 0 8 0 namei 1024 93895 0 93895 2 1 1 1 0 8 1 scsiplug 64 21 0 21 9 9 0 1 0 8 0 scxspl 192 155602 0 155602 22 21 1 7 0 8 1 plimitpl 152 919 0 912 1 0 1 1 0 8 0 sigapl 432 10531 0 10518 2 0 2 2 0 8 0 futexpl 56 118421 0 118421 4 3 1 1 0 8 1 knotepl 112 1848 0 1829 1 0 1 1 0 8 0 kqueuepl 104 1603 0 1601 1 0 1 1 0 8 0 pipepl 112 3986 0 3967 8 6 2 2 0 8 1 fdescpl 424 10532 0 10518 2 0 2 2 0 8 0 filepl 120 48572 0 48475 5 1 4 5 0 8 0 lockfpl 104 3062 0 3061 1 0 1 1 0 8 0 lockfspl 48 1030 0 1029 1 0 1 1 0 8 0 sessionpl 112 46 0 36 1 0 1 1 0 8 0 pgrppl 48 64 0 54 1 0 1 1 0 8 0 ucredpl 96 9045 0 9038 1 0 1 1 0 8 0 zombiepl 144 10519 0 10518 5 4 1 1 0 8 0 processpl 864 10548 0 10518 4 0 4 4 0 8 0 procpl 632 22772 0 22736 4 0 4 4 0 8 0 sosppl 128 130 0 130 15 14 1 1 0 8 1 sockpl 384 6022 0 6003 19 16 3 4 0 8 1 mcl64k 65536 732 0 732 87 79 8 65 0 8 8 mcl16k 16384 66 0 66 20 19 1 1 0 8 1 mcl12k 12288 176 0 176 18 17 1 1 0 8 1 mcl9k 9216 83 0 83 25 24 1 1 0 8 1 mcl8k 8192 86 0 86 23 22 1 1 0 8 1 mcl4k 4096 302 0 302 21 20 1 1 0 8 1 mcl2k2 2112 21 0 21 13 12 1 1 0 8 1 mcl2k 2048 36996 0 36955 46 39 7 11 0 8 1 mtagpl 80 190 0 176 9 8 1 1 0 8 0 mbufpl 256 141839 0 141719 55 45 10 42 0 8 0 bufpl 256 88739 0 82115 415 0 415 415 0 8 0 anonpl 16 967180 0 961863 186 147 39 39 0 62 13 amapchunkpl 152 43557 0 43471 54 47 7 9 0 158 3 amappl16 192 57690 0 57445 133 108 25 26 0 8 9 amappl15 184 4291 0 4291 5 5 0 1 0 8 0 amappl14 176 1190 0 1185 2 1 1 1 0 8 0 amappl13 168 772 0 771 4 3 1 1 0 8 0 amappl12 160 802 0 799 1 0 1 1 0 8 0 amappl11 152 2997 0 2986 1 0 1 1 0 8 0 amappl10 144 1205 0 1204 5 4 1 1 0 8 0 amappl9 136 1728 0 1722 1 0 1 1 0 8 0 amappl8 128 1352 0 1302 2 0 2 2 0 8 0 amappl7 120 1367 0 1362 1 0 1 1 0 8 0 amappl6 112 2906 0 2891 1 0 1 1 0 8 0 amappl5 104 1405 0 1394 1 0 1 1 0 8 0 amappl4 96 10112 0 10084 1 0 1 1 0 8 0 amappl3 88 1896 0 1886 1 0 1 1 0 8 0 amappl2 80 84340 0 84271 3 1 2 3 0 8 0 amappl1 72 182783 0 182376 25 14 11 20 0 8 0 amappl 80 23548 0 23514 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 64 152 0 23 3 0 3 3 0 8 0 uaddrrnd 24 10532 0 10518 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10532 0 10518 1 0 1 1 0 8 0 vmmpekpl 168 56380 0 56351 2 0 2 2 0 8 0 vmmpepl 168 1196205 0 1194885 231 158 73 77 0 357 8 vmsppl 272 10531 0 10518 5 4 1 2 0 8 0 pdppl 4096 21070 0 21036 6 1 5 6 0 8 0 pvpl 32 2782013 0 2773648 470 360 110 114 0 265 37 pmappl 200 10531 0 10518 1 0 1 1 0 8 0 extentpl 40 38 0 22 1 0 1 1 0 8 0 phpool 112 793 0 235 19 1 18 19 0 8 1