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(7aeed5074605ea76,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:502 rtable_walk_helper(fffffd8036d6ec10,ffff80001597a088) at rtable_walk_helper+0x58 sys/net/rtable.c:683 art_table_walk(ffff800000075880,fffffd8036d6d160,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075880,fffffd8036d6d160,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075880,fffffd8036d6d0c0,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d000,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d020,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d040,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d060,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d080,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d0a0,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d0e0,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d100,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d120,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d140,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d180,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d200,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d220,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d240,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d2c0,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d300,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d340,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d380,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d3e0,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d420,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d440,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d460,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d480,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d4a0,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d4c0,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d520,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d580,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d5a0,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6d5c0,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6df60,ffffffff81c07910,ffff80001597a088) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075880,ffffffff81c07910,ffff80001597a088) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,0,ffffffff81f40050,0) at rtable_walk+0xd4 ip6_mrouter_done(fffffd80363dcd88) at ip6_mrouter_done+0xb5 rip6_detach(fffffd80363dcd88) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd80363dcd88,0) at soclose+0xb2 sys/kern/uipc_socket.c:303 soo_close(fffffd803da0bf00,ffff8000149149f8) at soo_close+0x40 fdrop(fffffd803da0bf00,ffff8000149149f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd803da0bf00,ffff8000149149f8) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff8000149149f8) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff8000149149f8,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff8000149149f8,ffff80001597a520,ffff80001597a570) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff80001597a5f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,1,0,1,0,7f7ffffe7054) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe7020, count: -47 ddb> show registers rdi 0x7aeed5074605ea76 rsi 0 rbp 0xffff800015978dc0 rbx 0xffff800000075888 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0x9362ff9a0c00b74f r12 0 r13 0xfffffd8036d6d160 r14 0 r15 0x7aeed5074605ea76 rip 0xffffffff81f4007b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800015978d80 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=136328 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff800014914ee8,0xffffffff825a0168 process=0xffff8000148a3458 user=0xffff800015975000, vmspace=0xfffffd803f013770 estcpu=28, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 11606 156936 45177 0 2 0x2 syz-executor.0 95603 414933 45177 0 3 0x82 nanosleep syz-executor.1 48322 144139 0 0 3 0x14200 acct acct 96216 137425 1 0 3 0x100083 ttyin getty 14124 178793 0 0 3 0x14200 bored sosplice 45177 39631 98093 0 3 0x82 thrsleep syz-fuzzer 45177 198758 98093 0 3 0x4000082 nanosleep syz-fuzzer 45177 21158 98093 0 3 0x4000082 thrsleep syz-fuzzer 45177 96912 98093 0 3 0x4000082 thrsleep syz-fuzzer 45177 107075 98093 0 3 0x4000082 thrsleep syz-fuzzer 45177 272885 98093 0 3 0x4000082 kqread syz-fuzzer 45177 169072 98093 0 3 0x4000082 thrsleep syz-fuzzer 98093 292521 81858 0 3 0x10008a pause ksh 81858 100499 88774 0 3 0x92 select sshd 88774 217827 1 0 3 0x80 select sshd 43118 440511 24179 73 3 0x100090 kqread syslogd 24179 381012 1 0 3 0x100082 netio syslogd 78306 30754 1 77 3 0x100090 poll dhclient 41420 247646 1 0 3 0x80 poll dhclient 68874 302085 0 0 2 0x14200 zerothread 35945 457376 0 0 3 0x14200 aiodoned aiodoned 38474 394607 0 0 3 0x14200 syncer update 40208 242835 0 0 3 0x14200 cleaner cleaner 89659 474293 0 0 3 0x14200 reaper reaper 98760 270712 0 0 3 0x14200 pgdaemon pagedaemon 39615 134852 0 0 3 0x14200 bored crynlk 84869 338591 0 0 3 0x14200 bored crypto 20561 165700 0 0 3 0x40014200 acpi0 acpi0 63998 89698 0 0 3 0x14200 bored softnet 11174 454818 0 0 2 0x14200 systqmp 7235 501039 0 0 3 0x14200 bored systq 3450 196658 0 0 3 0x40014200 bored softclock 85085 293547 0 0 3 0x40014200 idle0 25479 523212 0 0 3 0x14200 bored smr 1 229093 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 9526 7125K 7382K 78643K 14641 0 0 pcb 15 8K 8K 78643K 190 0 0 rtable 110 3K 4K 78643K 647 0 0 ifaddr 62 14K 14K 78643K 222 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 98 0 0 iov 0 0K 16K 78643K 158 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1219 77K 77K 78643K 2632 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 30 0 0 VM map 2 0K 0K 78643K 8 0 0 sem 12 0K 1K 78643K 175 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12723 0 0 file desc 5 13K 25K 78643K 1609 0 0 sigio 0 0K 0K 78643K 22 0 0 proc 50 38K 63K 78643K 703 0 0 subproc 32 2K 2K 78643K 121 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 153 0 0 in_multi 33 2K 2K 78643K 132 0 0 ether_multi 2 0K 0K 78643K 6 0 0 mrt 2 0K 0K 78643K 5 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 60 265K 265K 78643K 60 0 0 exec 0 0K 1K 78643K 368 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 94 21K 30K 78643K 4662 0 0 UVM aobj 69 3K 3K 78643K 92 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 159 0 0 NDP 13 0K 0K 78643K 67 0 0 temp 177 3539K 4179K 78643K 31432 0 0 kqueue 0 0K 0K 78643K 11 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 17 0 11 1 0 1 1 0 8 0 rtpcb 80 77 0 75 1 0 1 1 0 8 0 rtentry 112 99 0 55 2 0 2 2 0 8 0 unpcb 120 565 0 557 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 3539 0 3539 2 2 0 2 0 8 0 tcpcb 544 312 0 308 1 0 1 1 0 8 0 ipq 40 5 0 5 2 2 0 1 0 8 0 ipqe 40 9 0 9 2 2 0 1 0 8 0 inpcb 280 865 0 856 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 14 0 10 1 0 1 1 0 8 0 pkpcb 40 10 0 10 4 4 0 1 0 8 0 ppxss 1128 26 0 26 7 6 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 437 0 219 14 0 14 14 0 8 0 art_table 32 438 0 219 2 0 2 2 0 8 0 art_node 16 96 0 55 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 173 0 163 1 0 1 1 0 8 0 shmpl 112 90 0 23 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3832 0 2437 46 0 46 46 0 8 0 ffsino 240 3832 0 2437 83 0 83 83 0 8 0 nchpl 144 6288 0 4692 60 0 60 60 0 8 0 uvmvnodes 72 4900 0 0 90 0 90 90 0 8 0 vnodes 208 4900 0 0 258 0 258 258 0 8 0 namei 1024 19655 0 19654 2 1 1 1 0 8 0 vmpool 520 6 0 6 3 3 0 1 0 8 0 scsiplug 64 8 0 8 4 4 0 1 0 8 0 scxspl 192 18361 0 18361 11 10 1 7 0 8 1 plimitpl 152 172 0 165 1 0 1 1 0 8 0 sigapl 432 1766 0 1753 2 0 2 2 0 8 0 futexpl 56 26241 0 26241 1 0 1 1 0 8 1 knotepl 112 517 0 498 1 0 1 1 0 8 0 kqueuepl 104 392 0 390 1 0 1 1 0 8 0 pipepl 112 1094 0 1075 3 2 1 2 0 8 0 fdescpl 424 1767 0 1753 2 0 2 2 0 8 0 filepl 120 10314 0 10217 4 0 4 4 0 8 1 lockfpl 104 544 0 543 1 0 1 1 0 8 0 lockfspl 48 174 0 173 1 0 1 1 0 8 0 sessionpl 112 23 0 13 1 0 1 1 0 8 0 pgrppl 48 37 0 27 1 0 1 1 0 8 0 ucredpl 96 1791 0 1784 1 0 1 1 0 8 0 zombiepl 144 1754 0 1753 2 1 1 1 0 8 0 processpl 864 1783 0 1753 4 0 4 4 0 8 0 procpl 632 3713 0 3677 4 0 4 4 0 8 0 sosppl 128 17 0 17 5 4 1 1 0 8 1 sockpl 384 1532 0 1513 3 0 3 3 0 8 1 mcl64k 65536 809 0 809 44 43 1 33 0 8 1 mcl16k 16384 7 0 7 4 3 1 1 0 8 1 mcl12k 12288 21 0 21 6 6 0 1 0 8 0 mcl9k 9216 19 0 19 7 6 1 1 0 8 1 mcl8k 8192 32 0 32 3 2 1 1 0 8 1 mcl4k 4096 84 0 84 4 3 1 1 0 8 1 mcl2k2 2112 4 0 4 4 4 0 1 0 8 0 mcl2k 2048 58954 0 58910 27 20 7 22 0 8 0 mtagpl 80 32 0 25 3 2 1 1 0 8 0 mbufpl 256 103565 0 103458 34 26 8 22 0 8 0 bufpl 256 12798 0 4629 513 1 512 513 0 8 0 anonpl 16 195901 0 183614 107 41 66 67 0 62 16 amapchunkpl 152 9286 0 9186 49 44 5 29 0 158 0 amappl16 192 9836 0 9147 101 58 43 47 0 8 8 amappl15 184 8 0 8 1 1 0 1 0 8 0 amappl14 176 220 0 215 1 0 1 1 0 8 0 amappl13 168 11 0 10 3 2 1 1 0 8 0 amappl12 160 382 0 377 1 0 1 1 0 8 0 amappl11 152 224 0 213 1 0 1 1 0 8 0 amappl10 144 497 0 496 2 1 1 1 0 8 0 amappl9 136 742 0 735 1 0 1 1 0 8 0 amappl8 128 305 0 282 1 0 1 1 0 8 0 amappl7 120 538 0 533 1 0 1 1 0 8 0 amappl6 112 248 0 239 1 0 1 1 0 8 0 amappl5 104 563 0 552 1 0 1 1 0 8 0 amappl4 96 1998 0 1969 1 0 1 1 0 8 0 amappl3 88 314 0 308 1 0 1 1 0 8 0 amappl2 80 12983 0 12917 3 1 2 3 0 8 0 amappl1 72 40803 0 40398 27 18 9 20 0 8 0 amappl 80 4030 0 3996 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 91 0 23 2 0 2 2 0 8 0 uaddrrnd 24 1773 0 1753 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1773 0 1753 1 0 1 1 0 8 0 vmmpekpl 168 14955 0 14930 2 0 2 2 0 8 0 vmmpepl 168 212669 0 210944 161 69 92 100 0 357 13 vmsppl 272 1766 0 1753 2 1 1 2 0 8 0 pdppl 4096 3552 0 3518 6 1 5 6 0 8 0 pvpl 32 636082 0 620731 261 99 162 253 0 265 36 pmappl 200 1772 0 1759 1 0 1 1 0 8 0 extentpl 40 38 0 22 1 0 1 1 0 8 0 phpool 112 743 0 103 19 0 19 19 0 8 0