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(faa5baa6236fd8bf,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:500 rtable_walk_helper(fffffd8036dafac0,ffff800016c05f78) at rtable_walk_helper+0x58 sys/net/rtable.c:682 art_table_walk(ffff800000075780,fffffd802e9f5128,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075780,fffffd802e9f5128,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075780,fffffd802e9f50e8,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd802e9f50c8,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd802e9f5028,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd802e9f5008,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd802e9f5048,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd802e9f5068,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae2c0,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae240,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae220,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae200,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae1c0,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae100,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae0e0,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae0a0,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae080,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae020,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae000,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae040,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae060,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae0c0,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae120,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae140,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae160,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae180,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae1a0,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae1e0,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae260,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae280,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae2a0,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dae2e0,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daef60,ffffffff81e04650,ffff800016c05f78) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075780,ffffffff81e04650,ffff800016c05f78) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,ffffffff819bbe10,0) at rtable_walk+0xc7 sys/net/rtable.c:706 ip6_mrouter_done(fffffd803eb02900) at ip6_mrouter_done+0xb8 sys/netinet6/ip6_mroute.c:529 rip6_detach(fffffd803eb02900) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd803eb02900,0) at soclose+0xb2 sys/kern/uipc_socket.c:292 soo_close(fffffd802fe54b50,ffff800014970870) at soo_close+0x40 fdrop(fffffd802fe54b50,ffff800014970870) at fdrop+0xc9 sys/kern/kern_descrip.c:1260 closef(fffffd802fe54b50,ffff800014970870) at closef+0x118 sys/kern/kern_descrip.c:1244 fdfree(ffff800014970870) at fdfree+0xf7 sys/kern/kern_descrip.c:1176 exit1(ffff800014970870,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff800014970870,ffff800016c063f0,ffff800016c06460) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800016c064c0) at syscall+0x508 Xsyscall(6,1,0,1,0,7f7ffffcba04) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcb9d0, count: -47 ddb> show registers rdi 0xfaa5baa6236fd8bf rsi 0 rbp 0xffff800016c04cb0 rbx 0xffff800000075788 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0xa1982efaa99cf28e r12 0 r13 0xfffffd802e9f5128 r14 0 r15 0xfaa5baa6236fd8bf rip 0xffffffff819bbe3b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800016c04c70 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=282280 stat=onproc flags process=1008 proc=2000 pri=50, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800014901ea8,0xffffffff8229d488 process=0xffff8000ffffa010 user=0xffff800016c01000, vmspace=0xfffffd803f014dd0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 65445 393443 1 0 3 0x100083 ttyin getty 38997 153248 0 0 3 0x14200 bored sosplice 90827 396885 71727 0 2 0x2 syz-executor.0 28094 55766 71727 0 3 0x82 nanosleep syz-executor.1 71727 401261 34727 0 3 0x82 thrsleep syz-fuzzer 71727 154496 34727 0 3 0x4000082 thrsleep syz-fuzzer 71727 189545 34727 0 3 0x4000082 thrsleep syz-fuzzer 71727 98157 34727 0 3 0x4000082 kqread syz-fuzzer 71727 216621 34727 0 3 0x4000082 thrsleep syz-fuzzer 71727 232647 34727 0 3 0x4000082 thrsleep syz-fuzzer 71727 267808 34727 0 3 0x4000082 thrsleep syz-fuzzer 34727 65112 35219 0 3 0x10008a pause ksh 35219 240693 78294 0 3 0x92 select sshd 78294 110256 1 0 3 0x80 select sshd 29003 519019 11850 73 3 0x100090 kqread syslogd 11850 454204 1 0 3 0x100082 netio syslogd 85482 224316 1 77 3 0x100090 poll dhclient 32433 360017 1 0 3 0x80 poll dhclient 91422 388169 0 0 2 0x14200 zerothread 71114 495095 0 0 3 0x14200 aiodoned aiodoned 85779 68806 0 0 3 0x14200 syncer update 76585 278025 0 0 3 0x14200 cleaner cleaner 93245 17268 0 0 3 0x14200 reaper reaper 2246 178601 0 0 3 0x14200 pgdaemon pagedaemon 32217 428915 0 0 3 0x14200 bored crynlk 61854 329463 0 0 3 0x14200 bored crypto 59593 260016 0 0 3 0x40014200 acpi0 acpi0 62988 438384 0 0 3 0x14200 bored softnet 51095 483772 0 0 2 0x14200 systqmp 74434 255362 0 0 3 0x14200 bored systq 49059 359171 0 0 3 0x40014200 bored softclock 19410 512468 0 0 3 0x40014200 idle0 70598 207195 0 0 3 0x14200 bored smr 1 158175 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 9524 6357K 7000K 78643K 19335 0 0 pcb 25 9K 10K 78643K 1362 0 0 rtable 130 5K 5K 78643K 712 0 0 ifaddr 62 15K 16K 78643K 326 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 196 0 0 iov 0 0K 24K 78643K 400 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1196 75K 76K 78643K 4357 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 40 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 0K 0K 78643K 260 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 3314 0 0 sigio 0 0K 0K 78643K 50 0 0 proc 42 30K 54K 78643K 602 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 278 0 0 in_multi 33 2K 2K 78643K 153 0 0 ether_multi 2 0K 0K 78643K 18 0 0 mrt 2 0K 0K 78643K 11 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 126 556K 556K 78643K 126 0 0 exec 0 0K 1K 78643K 477 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 81 20K 23K 78643K 8615 0 0 UVM aobj 130 4K 4K 78643K 151 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 78 0 0 NDP 13 0K 0K 78643K 85 0 0 temp 178 2719K 2799K 78643K 13116 0 0 kqueue 0 0K 0K 78643K 25 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 1180 0 1171 1 0 1 1 0 8 0 rtentry 112 56 0 6 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 19 0 19 1 1 0 1 0 8 0 tcpcb 544 418 0 414 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 ppxss 1128 60 0 60 15 14 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 195 0 0 13 0 13 13 0 8 0 art_table 32 196 0 0 2 0 2 2 0 8 0 art_node 16 51 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 30 0 19 1 0 1 1 0 8 0 semapl 112 258 0 248 1 0 1 1 0 8 0 shmpl 112 149 0 21 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 6889 0 5458 47 0 47 47 0 8 0 ffsino 240 6889 0 5458 85 0 85 85 0 8 0 nchpl 144 11792 0 10158 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 36946 0 36946 3 2 1 1 0 8 1 scsiplug 64 3 0 3 3 3 0 1 0 8 0 scxspl 192 37141 0 37141 27 26 1 6 0 8 1 plimitpl 152 121 0 114 1 0 1 1 0 8 0 sigapl 432 3487 0 3474 2 0 2 2 0 8 0 futexpl 56 52437 0 52437 3 2 1 1 0 8 1 knotepl 112 486 0 467 1 0 1 1 0 8 0 kqueuepl 104 583 0 581 1 0 1 1 0 8 0 pipepl 112 1954 0 1935 4 3 1 2 0 8 0 fdescpl 424 3488 0 3474 2 0 2 2 0 8 0 filepl 120 20379 0 20282 4 0 4 4 0 8 1 lockfpl 104 1325 0 1325 6 5 1 1 0 8 1 lockfspl 48 442 0 442 6 5 1 1 0 8 1 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 43 0 33 1 0 1 1 0 8 0 ucredpl 96 4585 0 4578 1 0 1 1 0 8 0 zombiepl 144 3475 0 3474 2 1 1 1 0 8 0 processpl 848 3503 0 3474 4 0 4 4 0 8 0 procpl 624 7787 0 7752 5 1 4 4 0 8 1 sosppl 128 36 0 36 11 11 0 1 0 8 0 sockpl 384 2378 0 2359 7 4 3 3 0 8 1 mcl64k 65536 876 0 876 102 101 1 64 0 8 1 mcl16k 16384 10 0 10 8 8 0 1 0 8 0 mcl12k 12288 55 0 55 13 13 0 1 0 8 0 mcl9k 9216 48 0 48 10 9 1 1 0 8 1 mcl8k 8192 31 0 31 10 10 0 1 0 8 0 mcl4k 4096 131 0 131 7 6 1 1 0 8 1 mcl2k2 2112 17 0 17 11 11 0 1 0 8 0 mcl2k 2048 55662 0 55621 16 10 6 11 0 8 0 mtagpl 80 6 0 6 3 3 0 1 0 8 0 mbufpl 256 103291 0 103229 56 50 6 36 0 8 1 bufpl 256 15001 0 9316 356 0 356 356 0 8 0 anonpl 16 323188 0 312472 147 87 60 61 0 62 14 amapchunkpl 152 14307 0 14207 37 32 5 14 0 158 0 amappl16 192 19426 0 18836 143 105 38 43 0 8 8 amappl14 176 35 0 34 2 1 1 1 0 8 0 amappl13 168 2 0 1 1 0 1 1 0 8 0 amappl12 160 22 0 18 1 0 1 1 0 8 0 amappl11 152 1692 0 1677 1 0 1 1 0 8 0 amappl10 144 1704 0 1701 2 1 1 1 0 8 0 amappl9 136 548 0 545 1 0 1 1 0 8 0 amappl8 128 129 0 114 1 0 1 1 0 8 0 amappl7 120 1666 0 1662 1 0 1 1 0 8 0 amappl6 112 1696 0 1688 1 0 1 1 0 8 0 amappl5 104 159 0 148 1 0 1 1 0 8 0 amappl4 96 3659 0 3635 1 0 1 1 0 8 0 amappl3 88 268 0 257 1 0 1 1 0 8 0 amappl2 80 27168 0 27101 4 2 2 3 0 8 0 amappl1 72 67220 0 66815 26 17 9 19 0 8 0 amappl 80 8054 0 8020 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 64 150 0 21 3 0 3 3 0 8 0 uaddrrnd 24 3488 0 3474 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3488 0 3474 1 0 1 1 0 8 0 vmmpekpl 168 21545 0 21517 2 0 2 2 0 8 0 vmmpepl 168 409052 0 407450 165 80 85 87 0 357 12 vmsppl 272 3487 0 3474 2 1 1 2 0 8 0 pdppl 4096 6982 0 6948 6 1 5 6 0 8 0 pvpl 32 982834 0 969087 401 214 187 231 0 265 74 pmappl 200 3487 0 3474 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 676 0 192 18 2 16 17 0 8 0