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(a7eed633790d0422,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:500 rtable_walk_helper(fffffd8036dbdaf0,ffff800016be9bd8) at rtable_walk_helper+0x58 sys/net/rtable.c:682 art_table_walk(ffff800000075780,fffffd8036dbc2c0,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075780,fffffd8036dbc2c0,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075780,fffffd8036dbc2a0,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc240,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc220,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc1e0,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc1a0,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc180,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc0e0,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc0c0,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc0a0,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc080,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc020,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc000,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc040,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc060,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc100,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc120,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc140,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc160,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc1c0,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc200,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc260,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc280,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc320,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc340,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc360,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc380,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc3c0,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc420,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc4a0,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbc4e0,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dbcf60,ffffffff814df6a0,ffff800016be9bd8) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075780,ffffffff814df6a0,ffff800016be9bd8) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,ffffffff81411950,0) at rtable_walk+0xc7 sys/net/rtable.c:706 ip6_mrouter_done(fffffd8039131600) at ip6_mrouter_done+0xb8 sys/netinet6/ip6_mroute.c:529 rip6_detach(fffffd8039131600) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd8039131600,0) at soclose+0xb2 sys/kern/uipc_socket.c:292 soo_close(fffffd802fdef1f0,ffff800014925eb8) at soo_close+0x40 fdrop(fffffd802fdef1f0,ffff800014925eb8) at fdrop+0xc9 sys/kern/kern_descrip.c:1260 closef(fffffd802fdef1f0,ffff800014925eb8) at closef+0x118 sys/kern/kern_descrip.c:1244 fdfree(ffff800014925eb8) at fdfree+0xf7 sys/kern/kern_descrip.c:1176 exit1(ffff800014925eb8,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff800014925eb8,ffff800016bea050,ffff800016bea0c0) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800016bea120) at syscall+0x508 Xsyscall(6,1,0,1,0,7f7ffffc95d4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc95a0, count: -47 ddb> show registers rdi 0xa7eed633790d0422 rsi 0 rbp 0xffff800016be8910 rbx 0xffff800000075788 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0x27d85195c45b07c9 r12 0 r13 0xfffffd8036dbc2c0 r14 0 r15 0xa7eed633790d0422 rip 0xffffffff8141197b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800016be88d0 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=264054 stat=onproc flags process=1008 proc=2000 pri=50, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800014901278,0xffffffff822b17d8 process=0xffff8000ffffb0a0 user=0xffff800016be5000, vmspace=0xfffffd803f00b660 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 68746 18754 71630 0 3 0x82 nanosleep syz-executor.0 19169 227835 71630 0 2 0x2 syz-executor.1 71630 159388 84686 0 3 0x82 thrsleep syz-fuzzer 71630 82461 84686 0 3 0x4000082 nanosleep syz-fuzzer 71630 66705 84686 0 3 0x4000082 thrsleep syz-fuzzer 71630 53420 84686 0 3 0x4000082 kqread syz-fuzzer 71630 333370 84686 0 3 0x4000082 thrsleep syz-fuzzer 71630 194348 84686 0 3 0x4000082 thrsleep syz-fuzzer 71630 373938 84686 0 3 0x4000082 thrsleep syz-fuzzer 84686 439601 10278 0 3 0x10008a pause ksh 10278 241620 98439 0 3 0x92 select sshd 35778 90960 1 0 3 0x100083 ttyin getty 98439 290315 1 0 3 0x80 select sshd 44862 281400 10246 73 3 0x100090 kqread syslogd 10246 69795 1 0 3 0x100082 netio syslogd 28538 423861 1 77 3 0x100090 poll dhclient 59852 431375 1 0 3 0x80 poll dhclient 53143 218564 0 0 2 0x14200 zerothread 31893 238391 0 0 3 0x14200 aiodoned aiodoned 6723 241872 0 0 3 0x14200 syncer update 89418 221514 0 0 3 0x14200 cleaner cleaner 74336 395050 0 0 3 0x14200 reaper reaper 78584 48272 0 0 3 0x14200 pgdaemon pagedaemon 78451 105968 0 0 3 0x14200 bored crynlk 24909 71899 0 0 3 0x14200 bored crypto 48958 109224 0 0 3 0x40014200 acpi0 acpi0 80341 48381 0 0 2 0x14200 softnet 35899 436386 0 0 2 0x14200 systqmp 39734 144836 0 0 3 0x14200 bored systq 90243 85722 0 0 3 0x40014200 bored softclock 65073 153501 0 0 3 0x40014200 idle0 91487 289826 0 0 3 0x14200 bored smr 1 297462 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 9458 6326K 6641K 78643K 10944 0 0 pcb 25 9K 10K 78643K 123 0 0 rtable 109 3K 4K 78643K 243 0 0 ifaddr 43 11K 12K 78643K 70 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 19 0 0 iov 0 0K 16K 78643K 16 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1213 76K 76K 78643K 1338 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 12 0K 0K 78643K 35 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 195 0 0 proc 41 30K 54K 78643K 299 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 4 0 0 in_multi 33 2K 2K 78643K 36 0 0 ether_multi 1 0K 0K 78643K 2 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 42 185K 185K 78643K 42 0 0 exec 0 0K 1K 78643K 198 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 86 20K 21K 78643K 1330 0 0 UVM aobj 27 2K 2K 78643K 27 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 7 0K 0K 78643K 18 0 0 temp 98 2709K 2773K 78643K 3556 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 80 0 71 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 36 0 36 1 1 0 1 0 8 0 tcpcb 544 26 0 22 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 7 0 7 2 1 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 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 28 0 18 1 0 1 1 0 8 0 shmpl 112 25 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1693 0 278 46 0 46 46 0 8 0 ffsino 240 1693 0 278 84 0 84 84 0 8 0 nchpl 144 2183 0 550 61 0 61 61 0 8 0 uvmvnodes 72 1811 0 0 33 0 33 33 0 8 0 vnodes 200 1811 0 0 96 0 96 96 0 8 0 namei 1024 5633 0 5633 2 1 1 1 0 8 1 scxspl 192 5490 0 5490 9 8 1 6 0 8 1 plimitpl 152 17 0 10 1 0 1 1 0 8 0 sigapl 432 366 0 353 2 0 2 2 0 8 0 futexpl 56 2800 0 2800 1 0 1 1 0 8 1 knotepl 112 77 0 58 1 0 1 1 0 8 0 kqueuepl 104 36 0 34 1 0 1 1 0 8 0 pipepl 112 214 0 195 2 1 1 1 0 8 0 fdescpl 424 367 0 353 2 0 2 2 0 8 0 filepl 120 1895 0 1799 5 1 4 4 0 8 1 lockfpl 104 42 0 42 5 4 1 1 0 8 1 lockfspl 48 17 0 17 5 4 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 96 244 0 237 1 0 1 1 0 8 0 zombiepl 144 354 0 353 2 1 1 1 0 8 0 processpl 848 381 0 353 4 0 4 4 0 8 0 procpl 624 639 0 605 4 0 4 4 0 8 0 sockpl 384 172 0 153 5 2 3 3 0 8 1 mcl64k 65536 4 0 4 2 2 0 1 0 8 0 mcl12k 12288 24 0 23 2 1 1 1 0 8 0 mcl8k 8192 3 0 3 1 1 0 1 0 8 0 mcl4k 4096 13 0 13 3 3 0 1 0 8 0 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 52001 0 51953 15 8 7 13 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 82688 0 82601 13 5 8 10 0 8 0 bufpl 256 5932 0 1457 280 0 280 280 0 8 0 anonpl 16 42620 0 32178 46 3 43 43 0 62 0 amapchunkpl 152 1757 0 1631 7 1 6 7 0 158 0 amappl16 192 1403 0 847 30 1 29 29 0 8 1 amappl15 184 8 0 7 1 0 1 1 0 8 0 amappl14 176 107 0 103 2 1 1 1 0 8 0 amappl12 160 9 0 9 1 1 0 1 0 8 0 amappl11 152 49 0 35 1 0 1 1 0 8 0 amappl10 144 153 0 151 2 1 1 1 0 8 0 amappl9 136 532 0 528 1 0 1 1 0 8 0 amappl8 128 132 0 116 1 0 1 1 0 8 0 amappl7 120 123 0 118 1 0 1 1 0 8 0 amappl6 112 54 0 48 1 0 1 1 0 8 0 amappl5 104 166 0 156 1 0 1 1 0 8 0 amappl4 96 493 0 471 1 0 1 1 0 8 0 amappl3 88 264 0 253 1 0 1 1 0 8 0 amappl2 80 2150 0 2085 4 2 2 3 0 8 0 amappl1 72 15874 0 15467 26 17 9 19 0 8 0 amappl 80 889 0 849 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 26 0 0 1 0 1 1 0 8 0 uaddrrnd 24 367 0 353 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 367 0 353 1 0 1 1 0 8 0 vmmpekpl 168 6626 0 6600 2 0 2 2 0 8 0 vmmpepl 168 49178 0 47600 107 33 74 86 0 357 5 vmsppl 272 366 0 353 2 1 1 2 0 8 0 pdppl 4096 741 0 706 6 1 5 6 0 8 0 pvpl 32 171117 0 157684 127 10 117 117 0 265 3 pmappl 200 366 0 353 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 431 0 24 12 0 12 12 0 8 0