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(3ac2307cbc7c9cf0,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:500 rtable_walk_helper(fffffd8036db4b70,ffff800016a00078) at rtable_walk_helper+0x58 sys/net/rtable.c:682 art_table_walk(ffff800000075780,fffffd8036db3000,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075780,fffffd8036db3000,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075780,fffffd8036db3020,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3040,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3080,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db30a0,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3100,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3140,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db31c0,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db31e0,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3200,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3220,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3260,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db32e0,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3300,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3320,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3340,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3380,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db33a0,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3400,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3420,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3480,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db34a0,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db34c0,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db34e0,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3500,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3540,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3580,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db35a0,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db35c0,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3620,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3640,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3f60,ffffffff817740e0,ffff800016a00078) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075780,ffffffff817740e0,ffff800016a00078) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,ffffffff8185c380,0) at rtable_walk+0xc7 sys/net/rtable.c:706 ip6_mrouter_done(fffffd80363e9d88) at ip6_mrouter_done+0xb8 sys/netinet6/ip6_mroute.c:529 rip6_detach(fffffd80363e9d88) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd80363e9d88,0) at soclose+0xb2 sys/kern/uipc_socket.c:292 soo_close(fffffd8036668b48,ffff80001491f9e0) at soo_close+0x40 fdrop(fffffd8036668b48,ffff80001491f9e0) at fdrop+0xc9 sys/kern/kern_descrip.c:1260 closef(fffffd8036668b48,ffff80001491f9e0) at closef+0x118 sys/kern/kern_descrip.c:1244 fdfree(ffff80001491f9e0) at fdfree+0xf7 sys/kern/kern_descrip.c:1176 exit1(ffff80001491f9e0,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff80001491f9e0,ffff800016a004f0,ffff800016a00560) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800016a005c0) at syscall+0x508 Xsyscall(6,1,0,1,0,7f7ffffe9004) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8fd0, count: -47 ddb> show registers rdi 0x3ac2307cbc7c9cf0 rsi 0 rbp 0xffff8000169fedb0 rbx 0xffff800000075788 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0x36de0788451520a9 r12 0 r13 0xfffffd8036db3000 r14 0 r15 0x3ac2307cbc7c9cf0 rip 0xffffffff8185c3ab mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000169fed70 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=324537 stat=onproc flags process=1008 proc=2000 pri=50, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff80001491fec0,0xffffffff822ccfb8 process=0xffff800014956360 user=0xffff8000169fb000, vmspace=0xfffffd803f014550 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 92717 113138 2978 0 2 0 syz-executor.0 92717 312375 2978 0 2 0x4000000 syz-executor.0 36686 385740 1 0 3 0x100083 ttyopn getty 2978 127422 4683 0 3 0x82 nanosleep syz-executor.0 3033 419376 4683 0 3 0x82 nanosleep syz-executor.1 79553 362979 0 0 3 0x14200 bored sosplice 4683 42923 88344 0 3 0x82 kqread syz-fuzzer 4683 323064 88344 0 3 0x4000082 nanosleep syz-fuzzer 4683 131418 88344 0 3 0x4000082 thrsleep syz-fuzzer 4683 129210 88344 0 3 0x4000082 thrsleep syz-fuzzer 4683 9319 88344 0 3 0x4000082 thrsleep syz-fuzzer 4683 151938 88344 0 3 0x4000082 thrsleep syz-fuzzer 4683 381888 88344 0 3 0x4000082 thrsleep syz-fuzzer 88344 204259 43188 0 3 0x10008a pause ksh 43188 505370 26337 0 3 0x92 select sshd 26337 443561 1 0 3 0x80 select sshd 87287 353116 95994 73 3 0x100090 kqread syslogd 95994 385013 1 0 3 0x100082 netio syslogd 50114 380624 1 77 3 0x100090 poll dhclient 37960 489359 1 0 3 0x80 poll dhclient 20046 510661 0 0 2 0x14200 zerothread 82120 239406 0 0 3 0x14200 aiodoned aiodoned 61883 134126 0 0 3 0x14200 syncer update 71528 422688 0 0 3 0x14200 cleaner cleaner 51776 205784 0 0 3 0x14200 reaper reaper 22197 15767 0 0 3 0x14200 pgdaemon pagedaemon 64946 235470 0 0 3 0x14200 bored crynlk 20583 325291 0 0 3 0x14200 bored crypto 585 97130 0 0 3 0x40014200 acpi0 acpi0 82685 87046 0 0 3 0x14200 bored softnet 23995 42653 0 0 2 0x14200 systqmp 96534 520918 0 0 3 0x14200 bored systq 58698 482185 0 0 3 0x40014200 bored softclock 45687 339057 0 0 3 0x40014200 idle0 52931 40437 0 0 3 0x14200 bored smr 1 351643 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 9518 6366K 7012K 78643K 20110 0 0 pcb 25 9K 11K 78643K 1925 0 0 rtable 109 4K 5K 78643K 898 0 0 ifaddr 57 14K 16K 78643K 384 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 191 0 0 iov 1 8K 24K 78643K 465 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1197 75K 77K 78643K 4663 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 54 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 0K 1K 78643K 291 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 6 17K 25K 78643K 3798 0 0 sigio 1 0K 0K 78643K 59 0 0 proc 42 30K 54K 78643K 708 0 0 subproc 32 2K 2K 78643K 76 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 343 0 0 in_multi 22 1K 2K 78643K 152 0 0 ether_multi 1 0K 0K 78643K 10 0 0 mrt 1 0K 0K 78643K 6 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 505 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 92 21K 39K 78643K 9676 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 147 0 0 NDP 12 0K 0K 78643K 104 0 0 temp 170 2715K 2791K 78643K 14692 0 0 kqueue 0 0K 0K 78643K 29 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 10 0 6 1 0 1 1 0 8 0 inpcbpl 280 1523 0 1514 1 0 1 1 0 8 0 rtentry 112 78 0 39 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 149 0 149 1 1 0 1 0 8 0 tcpcb 544 550 0 546 1 0 1 1 0 8 0 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 12 0 9 1 0 1 1 0 8 0 ppxss 1128 72 0 72 10 9 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 283 0 135 14 1 13 13 0 8 2 art_table 32 284 0 135 2 0 2 2 0 8 0 art_node 16 73 0 42 1 0 1 1 0 8 0 sysvmsgpl 40 23 0 11 1 0 1 1 0 8 0 semapl 112 287 0 277 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 7542 0 6093 47 0 47 47 0 8 0 ffsino 240 7542 0 6093 86 0 86 86 0 8 0 nchpl 144 13027 0 11404 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 41369 0 41369 1 0 1 1 0 8 1 scsiplug 64 7 0 7 5 5 0 1 0 8 0 scxspl 192 37878 0 37878 24 23 1 6 0 8 1 plimitpl 152 124 0 117 1 0 1 1 0 8 0 sigapl 432 3965 0 3951 2 0 2 2 0 8 0 futexpl 56 60567 0 60567 1 0 1 1 0 8 1 knotepl 112 729 0 710 2 1 1 2 0 8 0 kqueuepl 104 852 0 850 1 0 1 1 0 8 0 pipepl 112 2588 0 2569 10 8 2 2 0 8 1 fdescpl 424 3966 0 3951 2 0 2 2 0 8 0 filepl 120 23813 0 23714 7 3 4 5 0 8 1 lockfpl 104 1209 0 1208 2 1 1 1 0 8 0 lockfspl 48 432 0 431 2 1 1 1 0 8 0 sessionpl 112 21 0 11 1 0 1 1 0 8 0 pgrppl 48 59 0 49 1 0 1 1 0 8 0 ucredpl 96 5203 0 5196 1 0 1 1 0 8 0 zombiepl 144 3952 0 3951 2 1 1 1 0 8 0 processpl 840 3981 0 3951 4 0 4 4 0 8 0 procpl 624 8772 0 8735 5 1 4 4 0 8 0 sosppl 128 48 0 48 8 8 0 1 0 8 0 sockpl 384 3260 0 3241 7 4 3 4 0 8 1 mcl64k 65536 375 0 375 40 39 1 32 0 8 1 mcl16k 16384 13 0 13 9 8 1 1 0 8 1 mcl12k 12288 66 0 66 9 8 1 1 0 8 1 mcl9k 9216 67 0 67 11 10 1 1 0 8 1 mcl8k 8192 60 0 60 13 12 1 1 0 8 1 mcl4k 4096 170 0 170 3 2 1 1 0 8 1 mcl2k2 2112 22 0 22 11 10 1 1 0 8 1 mcl2k 2048 57020 0 56983 17 11 6 15 0 8 0 mtagpl 80 4 0 4 2 2 0 1 0 8 0 mbufpl 256 108170 0 108109 28 21 7 21 0 8 1 bufpl 256 14852 0 9169 356 0 356 356 0 8 0 anonpl 16 312593 0 301886 130 70 60 60 0 62 16 amapchunkpl 152 15379 0 15276 27 21 6 14 0 158 0 amappl16 192 17912 0 17324 107 65 42 42 0 8 12 amappl15 184 1878 0 1876 1 0 1 1 0 8 0 amappl14 176 1247 0 1243 2 1 1 1 0 8 0 amappl13 168 1 0 1 1 1 0 1 0 8 0 amappl12 160 1003 0 1001 1 0 1 1 0 8 0 amappl11 152 60 0 45 1 0 1 1 0 8 0 amappl10 144 75 0 73 1 0 1 1 0 8 0 amappl9 136 1445 0 1440 1 0 1 1 0 8 0 amappl8 128 1015 0 997 1 0 1 1 0 8 0 amappl7 120 41 0 37 1 0 1 1 0 8 0 amappl6 112 59 0 52 1 0 1 1 0 8 0 amappl5 104 1154 0 1144 1 0 1 1 0 8 0 amappl4 96 4128 0 4102 1 0 1 1 0 8 0 amappl3 88 315 0 303 1 0 1 1 0 8 0 amappl2 80 32745 0 32669 4 2 2 3 0 8 0 amappl1 72 75941 0 75511 26 17 9 19 0 8 0 amappl 80 9042 0 9006 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 64 145 0 16 3 0 3 3 0 8 0 uaddrrnd 24 3966 0 3951 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3966 0 3951 1 0 1 1 0 8 0 vmmpekpl 168 26262 0 26232 2 0 2 2 0 8 0 vmmpepl 168 458007 0 456285 174 88 86 89 0 357 11 vmsppl 272 3965 0 3951 2 1 1 2 0 8 0 pdppl 4096 7938 0 7902 6 1 5 6 0 8 0 pvpl 32 948392 0 934499 318 170 148 195 0 265 35 pmappl 200 3965 0 3951 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 587 0 99 16 1 15 16 0 8 0