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(573731743737191e,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:500 rtable_walk_helper(fffffd8036db29f0,ffff8000151ec9b8) at rtable_walk_helper+0x58 sys/net/rtable.c:682 art_table_walk(ffff800000075780,fffffd8036db1380,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075780,fffffd8036db1380,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075780,fffffd8036db1360,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1320,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1300,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db12c0,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db12a0,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1260,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1240,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1220,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db11e0,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1160,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1140,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1100,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db10e0,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db10c0,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1080,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1060,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1020,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1000,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1040,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db10a0,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1120,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1180,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db11a0,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db11c0,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1200,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1280,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db12e0,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1340,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db13e0,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1400,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db1f20,ffffffff8142a0b0,ffff8000151ec9b8) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075780,ffffffff8142a0b0,ffff8000151ec9b8) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,ffffffff8120dda0,0) at rtable_walk+0xc7 sys/net/rtable.c:706 ip6_mrouter_done(fffffd80363e5d88) at ip6_mrouter_done+0xb8 sys/netinet6/ip6_mroute.c:529 rip6_detach(fffffd80363e5d88) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd80363e5d88,0) at soclose+0xb2 sys/kern/uipc_socket.c:292 soo_close(fffffd802f520bd0,ffff80001491f018) at soo_close+0x40 fdrop(fffffd802f520bd0,ffff80001491f018) at fdrop+0xc9 sys/kern/kern_descrip.c:1260 closef(fffffd802f520bd0,ffff80001491f018) at closef+0x118 sys/kern/kern_descrip.c:1244 fdfree(ffff80001491f018) at fdfree+0xf7 sys/kern/kern_descrip.c:1176 exit1(ffff80001491f018,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff80001491f018,ffff8000151ece30,ffff8000151ecea0) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff8000151ecf00) at syscall+0x508 Xsyscall(6,1,0,1,0,7f7ffffd8d24) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8cf0, count: -47 ddb> show registers rdi 0x573731743737191e rsi 0 rbp 0xffff8000151eb6f0 rbx 0xffff800000075788 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0xcc0ac41a20dc09f0 r12 0 r13 0xfffffd8036db1380 r14 0 r15 0x573731743737191e rip 0xffffffff8120ddcb mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000151eb6b0 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=403154 stat=onproc flags process=1008 proc=2000 pri=50, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800014920878,0xffffffff822a6498 process=0xffff8000ffffb3c0 user=0xffff8000151e7000, vmspace=0xfffffd803f014110 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 15290 79524 63632 0 2 0 syz-executor.0 15290 387736 63632 0 3 0x4000080 ttyout syz-executor.0 45722 473426 1 0 3 0x100083 ttyin getty 50356 275136 0 0 3 0x14200 bored sosplice 4717 355755 47691 0 3 0x82 nanosleep syz-executor.1 63632 185492 47691 0 3 0x82 nanosleep syz-executor.0 47691 105864 2068 0 3 0x82 thrsleep syz-fuzzer 47691 446014 2068 0 3 0x4000082 thrsleep syz-fuzzer 47691 205588 2068 0 3 0x4000082 thrsleep syz-fuzzer 47691 503862 2068 0 3 0x4000082 thrsleep syz-fuzzer 47691 370800 2068 0 3 0x4000082 kqread syz-fuzzer 47691 108686 2068 0 3 0x4000082 thrsleep syz-fuzzer 47691 149634 2068 0 3 0x4000082 thrsleep syz-fuzzer 2068 438909 88728 0 3 0x10008a pause ksh 88728 243212 25688 0 3 0x92 select sshd 25688 383939 1 0 3 0x80 select sshd 32221 301351 31134 73 3 0x100090 kqread syslogd 31134 336023 1 0 3 0x100082 netio syslogd 20592 210984 1 77 3 0x100090 poll dhclient 5716 53474 1 0 3 0x80 poll dhclient 68312 270855 0 0 2 0x14200 zerothread 97489 21897 0 0 3 0x14200 aiodoned aiodoned 97277 392200 0 0 3 0x14200 syncer update 19569 352811 0 0 3 0x14200 cleaner cleaner 22268 240333 0 0 3 0x14200 reaper reaper 69295 146156 0 0 3 0x14200 pgdaemon pagedaemon 75687 382865 0 0 3 0x14200 bored crynlk 15712 176834 0 0 3 0x14200 bored crypto 38447 287738 0 0 3 0x40014200 acpi0 acpi0 22967 210817 0 0 3 0x14200 bored softnet 38537 461946 0 0 2 0x14200 systqmp 32526 134315 0 0 3 0x14200 bored systq 4245 397314 0 0 3 0x40014200 bored softclock 75000 214357 0 0 3 0x40014200 idle0 28288 418795 0 0 3 0x14200 bored smr 1 416659 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 9511 6361K 7621K 78643K 17028 0 0 pcb 25 9K 11K 78643K 1221 0 0 rtable 121 4K 5K 78643K 565 0 0 ifaddr 58 13K 14K 78643K 238 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 119 0 0 iov 0 0K 24K 78643K 246 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1211 76K 77K 78643K 3555 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 25 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 1K 1K 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 2515 0 0 sigio 0 0K 0K 78643K 43 0 0 proc 42 30K 54K 78643K 553 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 236 0 0 in_multi 33 2K 2K 78643K 126 0 0 ether_multi 1 0K 0K 78643K 12 0 0 mrt 2 0K 0K 78643K 13 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 361 0 0 pfkey data 0 0K 4K 78643K 4 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 39K 78643K 6681 0 0 UVM aobj 89 3K 3K 78643K 100 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 81 0 0 NDP 12 0K 0K 78643K 62 0 0 temp 170 2719K 3353K 78643K 10618 0 0 kqueue 0 0K 0K 78643K 5 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 1006 0 997 1 0 1 1 0 8 0 rtentry 112 50 0 2 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 118 0 118 1 1 0 1 0 8 0 tcpcb 544 384 0 380 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 43 0 43 8 7 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 187 0 0 12 0 12 12 0 8 0 art_table 32 188 0 0 2 0 2 2 0 8 0 art_node 16 49 0 8 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 2 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 12 0 2 1 0 1 1 0 8 0 shmpl 112 98 0 11 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 5510 0 4062 47 0 47 47 0 8 0 ffsino 240 5510 0 4062 86 0 86 86 0 8 0 nchpl 144 9151 0 7523 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 28285 0 28285 3 2 1 1 0 8 1 scxspl 192 27475 0 27475 22 20 2 6 0 8 2 plimitpl 152 104 0 97 1 0 1 1 0 8 0 sigapl 432 2689 0 2675 2 0 2 2 0 8 0 futexpl 56 39527 0 39527 2 1 1 1 0 8 1 knotepl 112 362 0 343 1 0 1 1 0 8 0 kqueuepl 104 462 0 460 1 0 1 1 0 8 0 pipepl 112 1456 0 1437 7 5 2 2 0 8 1 fdescpl 424 2690 0 2675 2 0 2 2 0 8 0 filepl 120 15829 0 15728 5 1 4 5 0 8 0 lockfpl 104 854 0 854 4 3 1 1 0 8 1 lockfspl 48 299 0 299 4 3 1 1 0 8 1 sessionpl 112 20 0 10 1 0 1 1 0 8 0 pgrppl 48 48 0 38 1 0 1 1 0 8 0 ucredpl 96 3690 0 3683 1 0 1 1 0 8 0 zombiepl 144 2676 0 2675 2 1 1 1 0 8 0 processpl 840 2705 0 2675 4 0 4 4 0 8 0 procpl 624 5908 0 5871 4 0 4 4 0 8 0 sosppl 128 39 0 39 8 8 0 1 0 8 0 sockpl 384 2068 0 2049 6 3 3 4 0 8 1 mcl64k 65536 566 0 566 71 70 1 65 0 8 1 mcl16k 16384 5 0 5 4 4 0 1 0 8 0 mcl12k 12288 45 0 45 6 5 1 1 0 8 1 mcl9k 9216 31 0 31 7 6 1 1 0 8 1 mcl8k 8192 31 0 31 9 8 1 1 0 8 1 mcl4k 4096 101 0 101 6 5 1 1 0 8 1 mcl2k2 2112 13 0 13 7 6 1 1 0 8 1 mcl2k 2048 53791 0 53745 17 10 7 14 0 8 0 mtagpl 80 6 0 4 3 2 1 1 0 8 0 mbufpl 256 96524 0 96458 42 37 5 38 0 8 0 bufpl 256 12310 0 6640 355 0 355 355 0 8 0 anonpl 16 215195 0 204355 116 55 61 61 0 62 15 amapchunkpl 152 11799 0 11696 50 36 14 18 0 158 9 amappl16 192 12631 0 12028 75 36 39 43 0 8 8 amappl14 176 43 0 38 2 1 1 1 0 8 0 amappl13 168 1255 0 1253 1 0 1 1 0 8 0 amappl12 160 16 0 15 2 1 1 1 0 8 0 amappl11 152 49 0 35 1 0 1 1 0 8 0 amappl10 144 1293 0 1289 2 1 1 1 0 8 0 amappl9 136 532 0 528 1 0 1 1 0 8 0 amappl8 128 128 0 113 1 0 1 1 0 8 0 amappl7 120 1250 0 1246 1 0 1 1 0 8 0 amappl6 112 52 0 46 1 0 1 1 0 8 0 amappl5 104 180 0 170 1 0 1 1 0 8 0 amappl4 96 2850 0 2824 1 0 1 1 0 8 0 amappl3 88 248 0 237 1 0 1 1 0 8 0 amappl2 80 21955 0 21881 4 2 2 3 0 8 0 amappl1 72 54505 0 54084 26 17 9 19 0 8 0 amappl 80 6163 0 6127 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 99 0 11 2 0 2 2 0 8 0 uaddrrnd 24 2690 0 2675 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2690 0 2675 1 0 1 1 0 8 0 vmmpekpl 168 18704 0 18675 2 0 2 2 0 8 0 vmmpepl 168 314747 0 313030 134 53 81 88 0 357 6 vmsppl 272 2689 0 2675 2 1 1 2 0 8 0 pdppl 4096 5386 0 5350 6 1 5 6 0 8 0 pvpl 32 735085 0 721090 348 131 217 217 0 265 103 pmappl 200 2689 0 2675 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 624 0 140 17 3 14 17 0 8 0