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(59d8c2127b596ba8,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:500 rtable_walk_helper(fffffd8036db2b70,ffff800016bfa8d8) at rtable_walk_helper+0x58 sys/net/rtable.c:682 art_table_walk(ffff800000075780,fffffd8036db1420,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075780,fffffd8036db1420,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075780,fffffd8036db1360,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1320,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1260,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1240,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1220,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db11a0,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1160,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1120,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1100,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1040,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1000,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1020,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1060,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1080,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db10a0,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db10c0,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db10e0,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1140,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1180,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db11c0,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db11e0,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1200,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1280,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db12a0,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db12c0,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db12e0,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1300,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1340,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1380,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db13a0,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1f60,ffffffff81246360,ffff800016bfa8d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075780,ffffffff81246360,ffff800016bfa8d8) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,ffffffff815d1c50,0) at rtable_walk+0xc7 sys/net/rtable.c:706 ip6_mrouter_done(fffffd8036fdc900) at ip6_mrouter_done+0xb8 sys/netinet6/ip6_mroute.c:529 rip6_detach(fffffd8036fdc900) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd8036fdc900,0) at soclose+0xb2 sys/kern/uipc_socket.c:292 soo_close(fffffd803614ccb0,ffff800014901278) at soo_close+0x40 fdrop(fffffd803614ccb0,ffff800014901278) at fdrop+0xc9 sys/kern/kern_descrip.c:1260 closef(fffffd803614ccb0,ffff800014901278) at closef+0x118 sys/kern/kern_descrip.c:1244 fdfree(ffff800014901278) at fdfree+0xf7 sys/kern/kern_descrip.c:1176 exit1(ffff800014901278,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff800014901278,ffff800016bfad50,ffff800016bfadc0) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800016bfae20) at syscall+0x508 Xsyscall(6,1,0,1,0,7f7fffff06c4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff0690, count: -47 ddb> show registers rdi 0x59d8c2127b596ba8 rsi 0 rbp 0xffff800016bf9610 rbx 0xffff800000075788 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0x1f44b2073dc20c51 r12 0 r13 0xfffffd8036db1420 r14 0 r15 0x59d8c2127b596ba8 rip 0xffffffff815d1c7b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800016bf95d0 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=153954 stat=onproc flags process=1008 proc=2000 pri=50, usrpri=57, nice=20 forw=0xffffffffffffffff, list=0xffff800014970120,0xffff800014902ae8 process=0xffff8000ffffb078 user=0xffff800016bf5000, vmspace=0xfffffd803f013dd0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 64038 3041 38392 0 2 0 syz-executor.0 64038 167518 38392 0 2 0x4000000 syz-executor.0 26787 392022 0 0 3 0x14200 bored sosplice 38392 126012 31652 0 3 0x82 nanosleep syz-executor.0 8860 321811 31652 0 3 0x82 nanosleep syz-executor.1 31652 229597 92807 0 3 0x82 thrsleep syz-fuzzer 31652 218747 92807 0 3 0x4000082 thrsleep syz-fuzzer 31652 470655 92807 0 3 0x4000082 thrsleep syz-fuzzer 31652 166213 92807 0 3 0x4000082 thrsleep syz-fuzzer 31652 236979 92807 0 3 0x4000082 kqread syz-fuzzer 31652 149425 92807 0 3 0x4000082 thrsleep syz-fuzzer 31652 412423 92807 0 3 0x4000082 thrsleep syz-fuzzer 92807 167192 18838 0 3 0x10008a pause ksh 18838 75208 71880 0 3 0x92 select sshd 98926 121958 1 0 3 0x100083 ttyin getty 71880 381951 1 0 3 0x80 select sshd 59640 25497 36974 73 3 0x100090 kqread syslogd 36974 374249 1 0 3 0x100082 netio syslogd 4567 475973 1 77 3 0x100090 poll dhclient 45130 80600 1 0 3 0x80 poll dhclient 7720 388849 0 0 2 0x14200 zerothread 31368 114356 0 0 3 0x14200 aiodoned aiodoned 9128 33955 0 0 3 0x14200 syncer update 50697 44399 0 0 3 0x14200 cleaner cleaner 99868 102291 0 0 3 0x14200 reaper reaper 362 295418 0 0 3 0x14200 pgdaemon pagedaemon 97438 231522 0 0 3 0x14200 bored crynlk 8111 300429 0 0 3 0x14200 bored crypto 56577 11913 0 0 3 0x40014200 acpi0 acpi0 43099 432745 0 0 3 0x14200 bored softnet 71207 126373 0 0 2 0x14200 systqmp 8482 468845 0 0 3 0x14200 bored systq 43705 269137 0 0 3 0x40014200 bored softclock 5661 385303 0 0 3 0x40014200 idle0 12959 149810 0 0 3 0x14200 bored smr 1 424793 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 9449 6315K 6633K 78643K 10757 0 0 pcb 24 9K 10K 78643K 146 0 0 rtable 109 3K 4K 78643K 231 0 0 ifaddr 39 10K 11K 78643K 47 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 25 0 0 iov 0 0K 16K 78643K 8 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1208 76K 76K 78643K 1299 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 3 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 11 0K 0K 78643K 14 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12537 0 0 file desc 6 17K 25K 78643K 172 0 0 proc 41 30K 54K 78643K 292 0 0 subproc 32 2K 2K 78643K 34 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 8 0 0 in_multi 33 2K 2K 78643K 41 0 0 ether_multi 1 0K 0K 78643K 1 0 0 mrt 1 0K 0K 78643K 26 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 42 185K 185K 78643K 42 0 0 exec 0 0K 1K 78643K 186 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 87 20K 21K 78643K 1199 0 0 UVM aobj 6 2K 2K 78643K 6 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 6 0 0 NDP 6 0K 0K 78643K 12 0 0 temp 95 2710K 2774K 78643K 3395 0 0 kqueue 0 0K 0K 78643K 2 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 280 117 0 109 1 0 1 1 0 8 0 rtentry 112 46 0 2 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 45 0 45 1 1 0 1 0 8 0 tcpcb 544 30 0 26 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 1 0 1 1 0 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 4 0 0 1 0 1 1 0 8 0 semapl 112 10 0 1 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1639 0 227 46 0 46 46 0 8 0 ffsino 240 1639 0 227 84 0 84 84 0 8 0 nchpl 144 2024 0 392 61 0 61 61 0 8 0 uvmvnodes 72 1733 0 0 32 0 32 32 0 8 0 vnodes 200 1733 0 0 92 0 92 92 0 8 0 namei 1024 4973 0 4973 2 1 1 1 0 8 1 scxspl 192 5079 0 5079 9 7 2 6 0 8 2 plimitpl 152 16 0 9 1 0 1 1 0 8 0 sigapl 432 343 0 329 2 0 2 2 0 8 0 futexpl 56 1775 0 1775 1 0 1 1 0 8 1 knotepl 112 65 0 46 1 0 1 1 0 8 0 kqueuepl 104 28 0 26 1 0 1 1 0 8 0 pipepl 112 182 0 163 2 1 1 1 0 8 0 fdescpl 424 344 0 329 2 0 2 2 0 8 0 filepl 120 1535 0 1440 4 0 4 4 0 8 1 lockfpl 104 39 0 39 2 1 1 1 0 8 1 lockfspl 48 13 0 13 2 1 1 1 0 8 1 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 108 0 101 1 0 1 1 0 8 0 zombiepl 144 330 0 329 2 1 1 1 0 8 0 processpl 840 359 0 329 4 0 4 4 0 8 0 procpl 624 520 0 483 4 0 4 4 0 8 1 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 384 191 0 173 3 0 3 3 0 8 1 mcl64k 65536 3 0 3 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 1 0 1 1 0 1 1 0 8 1 mcl4k 4096 10 0 10 2 1 1 1 0 8 1 mcl2k 2048 50690 0 50642 17 6 11 13 0 8 5 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 80006 0 79917 13 3 10 10 0 8 1 bufpl 256 5767 0 1353 276 0 276 276 0 8 0 anonpl 16 40327 0 30771 44 2 42 42 0 62 3 amapchunkpl 152 1560 0 1449 7 0 7 7 0 158 2 amappl16 192 1211 0 710 26 0 26 26 0 8 0 amappl15 184 8 0 7 1 0 1 1 0 8 0 amappl14 176 35 0 33 2 1 1 1 0 8 0 amappl13 168 63 0 61 1 0 1 1 0 8 0 amappl12 160 10 0 7 1 0 1 1 0 8 0 amappl11 152 51 0 37 1 0 1 1 0 8 0 amappl10 144 138 0 135 2 1 1 1 0 8 0 amappl9 136 554 0 551 1 0 1 1 0 8 0 amappl8 128 123 0 110 1 0 1 1 0 8 0 amappl7 120 107 0 101 1 0 1 1 0 8 0 amappl6 112 55 0 48 1 0 1 1 0 8 0 amappl5 104 121 0 112 1 0 1 1 0 8 0 amappl4 96 459 0 437 1 0 1 1 0 8 0 amappl3 88 179 0 166 1 0 1 1 0 8 0 amappl2 80 2008 0 1933 4 2 2 3 0 8 0 amappl1 72 15527 0 15108 26 14 12 19 0 8 3 amappl 80 749 0 709 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 344 0 329 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 344 0 329 1 0 1 1 0 8 0 vmmpekpl 168 6140 0 6111 2 0 2 2 0 8 0 vmmpepl 168 46023 0 44403 102 20 82 82 0 357 11 vmsppl 272 343 0 329 2 0 2 2 0 8 1 pdppl 4096 694 0 658 6 0 6 6 0 8 1 pvpl 32 140954 0 128342 117 5 112 112 0 265 10 pmappl 200 343 0 329 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 427 0 13 12 0 12 12 0 8 0