login: 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(18e03c1eb6c0d3c8,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:497 rtable_walk_helper(fffffd8036e07b30,ffff800014a144d8) at rtable_walk_helper+0x58 sys/net/rtable.c:682 art_table_walk(ffff800000075780,fffffd8036e062c0,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x226 art_walk_apply sys/net/art.c:707 [inline] art_table_walk(ffff800000075780,fffffd8036e062c0,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x226 sys/net/art.c:679 art_table_walk(ffff800000075780,fffffd8036e062a0,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06280,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06240,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06200,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e061e0,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06120,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06100,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e060e0,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e060c0,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e060a0,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06040,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06020,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06000,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06060,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06080,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06140,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06160,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06180,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e061a0,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e061c0,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06220,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06260,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e062e0,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06300,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06320,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06360,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e063a0,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06400,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06460,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e064a0,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_table_walk(ffff800000075780,fffffd8036e06f60,ffffffff81a5d3c0,ffff800014a144d8) at art_table_walk+0x2a6 sys/net/art.c:688 art_walk(ffff800000075780,ffffffff81a5d3c0,ffff800014a144d8) at art_walk+0xcf sys/net/art.c:626 rtable_walk(0,18,ffffffff81d27280,0) at rtable_walk+0xc7 sys/net/rtable.c:706 ip6_mrouter_done(fffffd8036454d88) at ip6_mrouter_done+0xb8 sys/netinet6/ip6_mroute.c:526 rip6_detach(fffffd8036454d88) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:748 soclose(fffffd8036454d88,0) at soclose+0xb2 sys/kern/uipc_socket.c:292 soo_close(fffffd80361bde90,ffff8000ffff5528) at soo_close+0x40 fdrop(fffffd80361bde90,ffff8000ffff5528) at fdrop+0xc9 sys/kern/kern_descrip.c:1260 closef(fffffd80361bde90,ffff8000ffff5528) at closef+0x118 sys/kern/kern_descrip.c:1244 fdfree(ffff8000ffff5528) at fdfree+0xf7 sys/kern/kern_descrip.c:1176 exit1(ffff8000ffff5528,0,1) at exit1+0x2f4 sys/kern/kern_exit.c:194 sys_exit(ffff8000ffff5528,ffff800014a14960,ffff800014a149d0) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800014a14a40) at syscall+0x511 Xsyscall(6,1,0,1,0,7f7ffffc84a4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc8470, count: -47 ddb> show registers rdi 0x18e03c1eb6c0d3c8 rsi 0 rbp 0xffff800014a13210 rbx 0xffff800000075788 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0x8205856c0e720e4d r12 0 r13 0xfffffd8036e062c0 r14 0 r15 0x18e03c1eb6c0d3c8 rip 0xffffffff81d272ab mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800014a131d0 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=321489 stat=onproc flags process=1008 proc=2000 pri=50, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff4e20,0xffffffff821ed260 process=0xffff8000149726a8 user=0xffff800014a0f000, vmspace=0xfffffd803f014d68 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 85963 382508 51722 0 2 0x2 syz-executor.1 31852 125872 51722 0 3 0x82 nanosleep syz-executor.0 51722 146094 49971 0 3 0x82 thrsleep syz-execprog 51722 21142 49971 0 3 0x4000082 nanosleep syz-execprog 51722 186902 49971 0 3 0x4000082 thrsleep syz-execprog 51722 330848 49971 0 3 0x4000082 thrsleep syz-execprog 51722 240188 49971 0 3 0x4000082 kqread syz-execprog 51722 211397 49971 0 3 0x4000082 thrsleep syz-execprog 51722 377792 49971 0 3 0x4000082 thrsleep syz-execprog 49971 378248 63923 0 3 0x10008a pause ksh 63923 302641 59460 0 3 0x92 select sshd 20265 4157 1 0 3 0x100083 ttyin getty 59460 317807 1 0 3 0x80 select sshd 50818 147295 60760 73 3 0x100090 kqread syslogd 60760 479171 1 0 3 0x100082 netio syslogd 19272 352060 1 77 3 0x100090 poll dhclient 38168 93561 1 0 3 0x80 poll dhclient 2354 291903 0 0 2 0x14200 zerothread 42047 267285 0 0 3 0x14200 aiodoned aiodoned 50857 488345 0 0 3 0x14200 syncer update 49207 105730 0 0 3 0x14200 cleaner cleaner 19208 276591 0 0 3 0x14200 reaper reaper 31031 429027 0 0 3 0x14200 pgdaemon pagedaemon 92996 70358 0 0 3 0x14200 bored crynlk 80311 206612 0 0 3 0x14200 bored crypto 58763 223759 0 0 3 0x40014200 acpi0 acpi0 23645 225932 0 0 3 0x14200 bored softnet 69944 37050 0 0 2 0x14200 systqmp 61427 387724 0 0 3 0x14200 bored systq 97353 166796 0 0 2 0x40014200 softclock 76398 92564 0 0 3 0x40014200 idle0 98746 353429 0 0 3 0x14200 bored smr 1 370627 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 9436 6311K 6311K 78643K 10529 0 0 pcb 25 9K 9K 78643K 71 0 0 rtable 98 2K 3K 78643K 170 0 0 ifaddr 34 9K 9K 78643K 34 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 15 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1191 75K 75K 78643K 1196 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 1K 78643K 2 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12537 0 0 file desc 4 12K 20K 78643K 23 0 0 proc 40 30K 46K 78643K 247 0 0 subproc 0 0K 34817K 78643K 34 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 in_multi 33 2K 2K 78643K 33 0 0 ether_multi 1 0K 0K 78643K 1 0 0 mrt 1 0K 0K 78643K 2 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 18 79K 79K 78643K 18 0 0 exec 0 0K 1K 78643K 185 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 66 19K 20K 78643K 982 0 0 UVM aobj 2 2K 2K 78643K 2 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 9 0K 0K 78643K 9 0 0 temp 46 2338K 2401K 78643K 3025 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 4 0 0 1 0 1 1 0 8 0 inpcbpl 280 34 0 25 1 0 1 1 0 8 0 plimitpl 152 19 0 12 1 0 1 1 0 8 0 rtentry 112 42 0 2 2 0 2 2 0 8 0 syncache 264 8 0 8 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 544 14 0 10 1 0 1 1 0 8 0 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 4 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 185 0 0 12 0 12 12 0 8 0 art_table 32 186 0 0 2 0 2 2 0 8 0 art_node 16 41 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1444 0 29 46 0 46 46 0 8 0 ffsino 240 1444 0 29 84 0 84 84 0 8 0 nchpl 144 1685 0 59 61 0 61 61 0 8 0 uvmvnodes 72 1470 0 0 27 0 27 27 0 8 0 vnodes 200 1470 0 0 78 0 78 78 0 8 0 namei 1024 4745 0 4744 2 1 1 1 0 8 0 scxspl 192 4548 0 4548 8 7 1 6 0 8 1 sigapl 432 214 0 201 2 0 2 2 0 8 0 futexpl 56 13 0 13 2 1 1 1 0 8 1 knotepl 112 95 0 78 1 0 1 1 0 8 0 kqueuepl 104 3 0 1 1 0 1 1 0 8 0 pipepl 112 202 0 183 2 1 1 1 0 8 0 fdescpl 424 215 0 201 2 0 2 2 0 8 0 filepl 120 1208 0 1145 3 1 2 3 0 8 0 lockfpl 104 6 0 6 1 1 0 1 0 8 0 lockfspl 32 3 0 3 1 1 0 1 0 8 0 sessionpl 112 26 0 16 1 0 1 1 0 8 0 pgrppl 48 26 0 16 1 0 1 1 0 8 0 ucredpl 96 68 0 61 1 0 1 1 0 8 0 zombiepl 144 202 0 201 2 1 1 1 0 8 0 processpl 840 229 0 201 4 0 4 4 0 8 0 procpl 600 243 0 209 3 0 3 3 0 8 0 sockpl 384 88 0 69 2 0 2 2 0 8 0 mcl4k 4096 16 0 16 1 0 1 1 0 8 1 mcl2k 2048 14366 0 14338 8 2 6 6 0 8 2 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 24442 0 24367 6 1 5 5 0 8 0 bufpl 256 5834 0 1171 292 0 292 292 0 8 0 anonpl 16 30150 0 28717 18 6 12 12 0 62 3 amapchunkpl 152 997 0 935 7 3 4 5 0 158 0 amappl16 192 163 0 136 3 1 2 2 0 8 0 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 80 0 74 1 0 1 1 0 8 0 amappl12 160 22 0 20 1 0 1 1 0 8 0 amappl11 152 32 0 21 1 0 1 1 0 8 0 amappl10 144 85 0 83 2 1 1 1 0 8 0 amappl9 136 528 0 524 1 0 1 1 0 8 0 amappl8 128 148 0 134 1 0 1 1 0 8 0 amappl7 120 36 0 34 1 0 1 1 0 8 0 amappl6 112 78 0 71 1 0 1 1 0 8 0 amappl5 104 614 0 605 1 0 1 1 0 8 0 amappl4 96 478 0 455 3 1 2 2 0 8 1 amappl3 88 165 0 160 1 0 1 1 0 8 0 amappl2 80 816 0 770 3 1 2 2 0 8 1 amappl1 72 15177 0 14759 32 13 19 19 0 8 10 amappl 72 534 0 505 1 0 1 1 0 75 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 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 215 0 201 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 215 0 201 1 0 1 1 0 8 0 vmmpekpl 168 8547 0 8530 1 0 1 1 0 8 0 vmmpepl 168 32871 0 32002 95 23 72 72 0 357 30 vmsppl 264 214 0 201 2 0 2 2 0 8 1 pdppl 4096 436 0 402 5 0 5 5 0 8 0 pvpl 32 140744 0 137003 113 8 105 105 0 265 72 pmappl 192 214 0 201 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 417 0 6 12 0 12 12 0 8 0