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(5821468b62abe24d,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:500 rtable_walk_helper(fffffd8036daea70,ffff800015a01f38) at rtable_walk_helper+0x58 sys/net/rtable.c:682 art_table_walk(ffff800000075780,fffffd8036dad0e0,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075780,fffffd8036dad0e0,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075780,fffffd8036dad0c0,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad080,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad060,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad000,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad020,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad040,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad0a0,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad100,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad140,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad180,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad1c0,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad1e0,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad200,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad220,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad2a0,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad2c0,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad2e0,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad300,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad320,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad340,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad360,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad3c0,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad3e0,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad400,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad420,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad440,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad4a0,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad520,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad540,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dad560,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dadf60,ffffffff81cb4830,ffff800015a01f38) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075780,ffffffff81cb4830,ffff800015a01f38) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,ffffffff81d9d4d0,0) at rtable_walk+0xc7 sys/net/rtable.c:706 ip6_mrouter_done(fffffd80363f1788) at ip6_mrouter_done+0xb8 sys/netinet6/ip6_mroute.c:529 rip6_detach(fffffd80363f1788) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd80363f1788,0) at soclose+0xb2 sys/kern/uipc_socket.c:292 soo_close(fffffd803e1c8360,ffff80001491f020) at soo_close+0x40 fdrop(fffffd803e1c8360,ffff80001491f020) at fdrop+0xc9 sys/kern/kern_descrip.c:1260 closef(fffffd803e1c8360,ffff80001491f020) at closef+0x118 sys/kern/kern_descrip.c:1244 fdfree(ffff80001491f020) at fdfree+0xf7 sys/kern/kern_descrip.c:1176 exit1(ffff80001491f020,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff80001491f020,ffff800015a023b0,ffff800015a02420) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800015a02480) at syscall+0x508 Xsyscall(6,1,0,1,0,7f7ffffe0b14) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0ae0, count: -47 ddb> show registers rdi 0x5821468b62abe24d rsi 0 rbp 0xffff800015a00c70 rbx 0xffff800000075788 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0xb315d0c2dda8b7d0 r12 0 r13 0xfffffd8036dad0e0 r14 0 r15 0x5821468b62abe24d rip 0xffffffff81d9d4fb mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800015a00c30 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=344307 stat=onproc flags process=1008 proc=2000 pri=50, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff80001491f290,0xffffffff822b2bd8 process=0xffff8000ffffa010 user=0xffff8000159fd000, vmspace=0xfffffd803f014bb0 estcpu=31, cpticks=9, pctcpu=0.3 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 4450 482867 1 0 3 0x100083 ttyin getty 7428 503630 0 0 3 0x14200 bored sosplice 21105 386614 18417 0 3 0x82 nanosleep syz-executor.0 56731 112650 18417 0 3 0x82 piperd syz-executor.1 18417 496293 82329 0 3 0x82 thrsleep syz-fuzzer 18417 181826 82329 0 3 0x4000082 thrsleep syz-fuzzer 18417 380371 82329 0 3 0x4000082 thrsleep syz-fuzzer 18417 191165 82329 0 3 0x4000082 thrsleep syz-fuzzer 18417 314051 82329 0 3 0x4000082 thrsleep syz-fuzzer 18417 322130 82329 0 3 0x4000082 kqread syz-fuzzer 18417 245231 82329 0 3 0x4000082 thrsleep syz-fuzzer 82329 410225 21836 0 3 0x10008a pause ksh 21836 75415 68653 0 3 0x92 select sshd 68653 392396 1 0 3 0x80 select sshd 23462 230849 38982 73 3 0x100090 kqread syslogd 38982 349270 1 0 3 0x100082 netio syslogd 25790 518895 1 77 3 0x100090 poll dhclient 2343 399093 1 0 3 0x80 poll dhclient 91035 523312 0 0 2 0x14200 zerothread 70875 341445 0 0 3 0x14200 aiodoned aiodoned 97286 278174 0 0 3 0x14200 syncer update 54559 117328 0 0 3 0x14200 cleaner cleaner 97208 304372 0 0 3 0x14200 reaper reaper 46641 150416 0 0 3 0x14200 pgdaemon pagedaemon 38533 432138 0 0 3 0x14200 bored crynlk 37099 134784 0 0 3 0x14200 bored crypto 48824 122674 0 0 3 0x40014200 acpi0 acpi0 49351 153218 0 0 3 0x14200 bored softnet 49778 378996 0 0 2 0x14200 systqmp 26235 494558 0 0 3 0x14200 bored systq 1819 481883 0 0 3 0x40014200 bored softclock 87898 445386 0 0 3 0x40014200 idle0 27267 194060 0 0 3 0x14200 bored smr 1 168197 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 9497 6353K 7104K 78643K 18290 0 0 pcb 25 9K 10K 78643K 1343 0 0 rtable 112 4K 4K 78643K 612 0 0 ifaddr 51 13K 14K 78643K 278 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 162 0 0 iov 0 0K 28K 78643K 360 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1203 76K 76K 78643K 4064 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 42 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 1K 1K 78643K 235 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 2871 0 0 sigio 1 0K 0K 78643K 36 0 0 proc 42 30K 46K 78643K 556 0 0 subproc 32 2K 2K 78643K 36 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 257 0 0 in_multi 33 2K 2K 78643K 139 0 0 ether_multi 1 0K 0K 78643K 11 0 0 mrt 2 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 90 397K 397K 78643K 90 0 0 exec 0 0K 1K 78643K 447 0 0 pfkey data 0 0K 0K 78643K 2 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 88 20K 21K 78643K 7653 0 0 UVM aobj 130 4K 4K 78643K 146 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 124 0 0 NDP 10 0K 0K 78643K 73 0 0 temp 157 2719K 2789K 78643K 11918 0 0 kqueue 0 0K 0K 78643K 17 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 1179 0 1170 2 1 1 2 0 8 0 rtentry 112 48 0 4 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 15 0 15 1 1 0 1 0 8 0 tcpcb 544 405 0 401 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 49 0 49 12 11 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 45 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 7 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 231 0 221 1 0 1 1 0 8 0 shmpl 112 144 0 16 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 6222 0 4780 47 0 47 47 0 8 0 ffsino 240 6222 0 4780 85 0 85 85 0 8 0 nchpl 144 10328 0 8699 61 0 61 61 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 200 5926 0 0 312 0 312 312 0 8 0 namei 1024 32284 0 32284 3 2 1 1 0 8 1 scsiplug 64 7 0 7 5 5 0 1 0 8 0 scxspl 192 32767 0 32767 18 17 1 6 0 8 1 plimitpl 152 105 0 98 1 0 1 1 0 8 0 sigapl 432 3044 0 3031 2 0 2 2 0 8 0 futexpl 56 47097 0 47097 2 1 1 1 0 8 1 knotepl 112 589 0 570 1 0 1 1 0 8 0 kqueuepl 104 685 0 683 1 0 1 1 0 8 0 pipepl 112 1734 0 1715 5 4 1 2 0 8 0 fdescpl 424 3045 0 3031 2 0 2 2 0 8 0 filepl 120 18559 0 18461 4 0 4 4 0 8 0 lockfpl 104 1141 0 1140 3 2 1 1 0 8 0 lockfspl 48 388 0 387 3 2 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 33 0 23 1 0 1 1 0 8 0 ucredpl 96 4158 0 4151 1 0 1 1 0 8 0 zombiepl 144 3032 0 3031 2 1 1 1 0 8 0 processpl 848 3060 0 3031 4 0 4 4 0 8 0 procpl 624 6843 0 6808 5 1 4 4 0 8 0 sosppl 128 60 0 60 12 11 1 1 0 8 1 sockpl 384 2334 0 2315 4 1 3 3 0 8 1 mcl64k 65536 1316 0 1316 127 121 6 33 0 8 6 mcl16k 16384 8 0 8 6 6 0 1 0 8 0 mcl12k 12288 51 0 51 10 9 1 1 0 8 1 mcl9k 9216 45 0 45 11 10 1 1 0 8 1 mcl8k 8192 29 0 29 10 9 1 1 0 8 1 mcl4k 4096 128 0 128 6 5 1 1 0 8 1 mcl2k2 2112 15 0 15 9 8 1 1 0 8 1 mcl2k 2048 55977 0 55929 18 11 7 14 0 8 0 mtagpl 80 12 0 12 6 5 1 1 0 8 1 mbufpl 256 102600 0 102530 71 65 6 21 0 8 0 bufpl 256 13161 0 8632 284 0 284 284 0 8 0 anonpl 16 283611 0 272695 122 76 46 61 0 62 0 amapchunkpl 152 12227 0 12094 14 8 6 9 0 158 0 amappl16 192 17229 0 16652 119 89 30 42 0 8 0 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 34 0 33 2 1 1 1 0 8 0 amappl13 168 1453 0 1451 1 0 1 1 0 8 0 amappl12 160 15 0 12 1 0 1 1 0 8 0 amappl11 152 55 0 41 1 0 1 1 0 8 0 amappl10 144 61 0 60 2 1 1 1 0 8 0 amappl9 136 1916 0 1911 1 0 1 1 0 8 0 amappl8 128 1524 0 1509 1 0 1 1 0 8 0 amappl7 120 31 0 28 1 0 1 1 0 8 0 amappl6 112 53 0 46 1 0 1 1 0 8 0 amappl5 104 201 0 191 1 0 1 1 0 8 0 amappl4 96 3207 0 3184 1 0 1 1 0 8 0 amappl3 88 267 0 257 1 0 1 1 0 8 0 amappl2 80 25048 0 24982 4 2 2 3 0 8 0 amappl1 72 60838 0 60424 24 15 9 19 0 8 0 amappl 80 7112 0 7068 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 64 145 0 16 3 0 3 3 0 8 0 uaddrrnd 24 3045 0 3031 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3045 0 3031 1 0 1 1 0 8 0 vmmpekpl 168 24920 0 24892 2 0 2 2 0 8 0 vmmpepl 168 355379 0 353774 173 97 76 104 0 357 3 vmsppl 272 3044 0 3031 2 1 1 2 0 8 0 pdppl 4096 6096 0 6062 6 1 5 6 0 8 0 pvpl 32 743960 0 730000 232 113 119 153 0 265 3 pmappl 200 3044 0 3031 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 642 0 224 15 2 13 14 0 8 0