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(5d93066e24904224,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:500 rtable_walk_helper(fffffd8036db8ae0,ffff800016bf9d98) at rtable_walk_helper+0x58 sys/net/rtable.c:682 art_table_walk(ffff800000075780,fffffd8036db7320,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075780,fffffd8036db7320,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075780,fffffd8036db72e0,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7280,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7260,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7200,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db71e0,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db71c0,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7180,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7120,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7100,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db70a0,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7080,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7000,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7020,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7040,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7060,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db70c0,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db70e0,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7140,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7160,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db71a0,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7220,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7240,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db72a0,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db72c0,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7300,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7360,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7380,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db73a0,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7420,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7440,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db7f20,ffffffff8129ef00,ffff800016bf9d98) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075780,ffffffff8129ef00,ffff800016bf9d98) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,ffffffff81bd32b0,0) at rtable_walk+0xc7 sys/net/rtable.c:706 ip6_mrouter_done(fffffd80363fcd88) at ip6_mrouter_done+0xb8 sys/netinet6/ip6_mroute.c:529 rip6_detach(fffffd80363fcd88) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd80363fcd88,0) at soclose+0xb2 sys/kern/uipc_socket.c:292 soo_close(fffffd802b0c5440,ffff80001491f500) at soo_close+0x40 fdrop(fffffd802b0c5440,ffff80001491f500) at fdrop+0xc9 sys/kern/kern_descrip.c:1260 closef(fffffd802b0c5440,ffff80001491f500) at closef+0x118 sys/kern/kern_descrip.c:1244 fdfree(ffff80001491f500) at fdfree+0xf7 sys/kern/kern_descrip.c:1176 exit1(ffff80001491f500,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff80001491f500,ffff800016bfa210,ffff800016bfa280) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800016bfa2e0) at syscall+0x508 Xsyscall(6,1,0,1,0,7f7fffffa654) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffa620, count: -47 ddb> show registers rdi 0x5d93066e24904224 rsi 0 rbp 0xffff800016bf8ad0 rbx 0xffff800000075788 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0xba105b4985a7076e r12 0 r13 0xfffffd8036db7320 r14 0 r15 0x5d93066e24904224 rip 0xffffffff81bd32db mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800016bf8a90 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=489525 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800014970120,0xffffffff8228a1d8 process=0xffff8000ffffa6b0 user=0xffff800016bf5000, vmspace=0xfffffd803f014ee0 estcpu=36, cpticks=14, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 38628 109390 1 0 3 0x100083 ttyin getty 37980 259375 0 0 3 0x14200 bored sosplice 31282 424939 18002 0 3 0x82 nanosleep syz-executor.0 7842 105783 18002 0 3 0x82 piperd syz-executor.1 18002 474925 33081 0 3 0x82 thrsleep syz-fuzzer 18002 249171 33081 0 3 0x4000082 thrsleep syz-fuzzer 18002 4512 33081 0 3 0x4000082 thrsleep syz-fuzzer 18002 301764 33081 0 3 0x4000082 kqread syz-fuzzer 18002 210609 33081 0 3 0x4000082 thrsleep syz-fuzzer 18002 470471 33081 0 3 0x4000082 thrsleep syz-fuzzer 18002 177047 33081 0 3 0x4000082 thrsleep syz-fuzzer 33081 319874 87706 0 3 0x10008a pause ksh 87706 389284 45181 0 3 0x92 select sshd 45181 220158 1 0 3 0x80 select sshd 19763 100023 4603 73 3 0x100090 kqread syslogd 4603 278871 1 0 3 0x100082 netio syslogd 86337 117285 1 77 3 0x100090 poll dhclient 1506 466343 1 0 3 0x80 poll dhclient 79242 245549 0 0 2 0x14200 zerothread 86451 59087 0 0 3 0x14200 aiodoned aiodoned 63552 270911 0 0 3 0x14200 syncer update 73458 255663 0 0 3 0x14200 cleaner cleaner 73227 434630 0 0 3 0x14200 reaper reaper 18342 463141 0 0 3 0x14200 pgdaemon pagedaemon 66636 34567 0 0 3 0x14200 bored crynlk 41661 215862 0 0 3 0x14200 bored crypto 55162 202410 0 0 3 0x40014200 acpi0 acpi0 33553 440702 0 0 3 0x14200 bored softnet 70850 247456 0 0 2 0x14200 systqmp 77638 27981 0 0 3 0x14200 bored systq 771 437031 0 0 3 0x40014200 bored softclock 71552 317335 0 0 3 0x40014200 idle0 35911 494551 0 0 3 0x14200 bored smr 1 401692 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 9547 6439K 14821K 78643K 23255 0 0 pcb 24 9K 10K 78643K 2364 0 0 rtable 115 4K 4K 78643K 990 0 0 ifaddr 68 15K 16K 78643K 480 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 257 0 0 iov 0 0K 24K 78643K 1292 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1200 75K 76K 78643K 8001 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 64 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 1K 1K 78643K 13 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 5464 0 0 sigio 0 0K 0K 78643K 55 0 0 proc 42 30K 54K 78643K 794 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 431 0 0 in_multi 33 2K 2K 78643K 127 0 0 ether_multi 2 0K 0K 78643K 17 0 0 mrt 2 0K 0K 78643K 17 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 567 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 29K 78643K 14032 0 0 UVM aobj 130 4K 4K 78643K 154 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 222 0 0 NDP 15 0K 0K 78643K 128 0 0 temp 192 2720K 2797K 78643K 19290 0 0 kqueue 0 0K 0K 78643K 44 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 1986 0 1978 1 0 1 1 0 8 0 rtentry 112 54 0 9 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 744 0 740 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 swfcl 56 1 0 0 1 0 1 1 0 8 0 ppxss 1128 90 0 90 17 16 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 46 0 5 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 7 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 11 0 1 1 0 1 1 0 8 0 shmpl 112 152 0 24 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 12869 0 11413 48 0 48 48 0 8 0 ffsino 240 12869 0 11413 86 0 86 86 0 8 0 nchpl 144 21026 0 19391 61 0 61 61 0 8 0 uvmvnodes 72 6511 0 0 119 0 119 119 0 8 0 vnodes 200 6511 0 0 343 0 343 343 0 8 0 namei 1024 72127 0 72127 3 2 1 1 0 8 1 scsiplug 64 6 0 6 6 5 1 1 0 8 1 scxspl 192 57229 0 57229 32 29 3 6 0 8 3 plimitpl 152 184 0 176 1 0 1 1 0 8 0 sigapl 432 5642 0 5629 2 0 2 2 0 8 0 futexpl 56 100619 0 100619 2 1 1 1 0 8 1 knotepl 112 992 0 973 1 0 1 1 0 8 0 kqueuepl 104 1212 0 1210 1 0 1 1 0 8 0 pipepl 112 3052 0 3033 11 10 1 2 0 8 0 fdescpl 424 5643 0 5629 2 0 2 2 0 8 0 filepl 120 44812 0 44716 6 2 4 5 0 8 0 lockfpl 104 2798 0 2798 5 4 1 1 0 8 1 lockfspl 48 1145 0 1145 5 4 1 1 0 8 1 sessionpl 112 24 0 14 1 0 1 1 0 8 0 pgrppl 48 56 0 46 1 0 1 1 0 8 0 ucredpl 96 17455 0 17448 1 0 1 1 0 8 0 zombiepl 144 5630 0 5629 2 1 1 1 0 8 0 processpl 848 5658 0 5629 4 0 4 4 0 8 0 procpl 624 12521 0 12486 5 1 4 4 0 8 0 sosppl 128 76 0 76 17 16 1 1 0 8 1 sockpl 384 4054 0 4036 6 3 3 3 0 8 1 mcl64k 65536 1123 0 1123 71 69 2 32 0 8 2 mcl16k 16384 24 0 24 15 15 0 1 0 8 0 mcl12k 12288 78 0 78 15 14 1 1 0 8 1 mcl9k 9216 67 0 67 18 17 1 1 0 8 1 mcl8k 8192 636 0 636 16 15 1 1 0 8 1 mcl4k 4096 250 0 250 7 6 1 1 0 8 1 mcl2k2 2112 33 0 33 13 12 1 1 0 8 1 mcl2k 2048 60741 0 60698 18 12 6 11 0 8 0 mtagpl 80 10 0 10 4 4 0 1 0 8 0 mbufpl 256 123971 0 123913 53 48 5 20 0 8 0 bufpl 256 21682 0 14905 424 0 424 424 0 8 0 anonpl 16 482157 0 471117 218 164 54 62 0 62 7 amapchunkpl 152 22833 0 22727 67 61 6 14 0 158 1 amappl16 192 26793 0 26186 189 156 33 43 0 8 2 amappl15 184 2760 0 2758 1 0 1 1 0 8 0 amappl14 176 2802 0 2798 2 1 1 1 0 8 0 amappl13 168 2672 0 2670 1 0 1 1 0 8 0 amappl12 160 10 0 9 1 0 1 1 0 8 0 amappl11 152 50 0 36 1 0 1 1 0 8 0 amappl10 144 68 0 67 2 1 1 1 0 8 0 amappl9 136 559 0 555 1 0 1 1 0 8 0 amappl8 128 133 0 116 1 0 1 1 0 8 0 amappl7 120 30 0 27 1 0 1 1 0 8 0 amappl6 112 60 0 52 1 0 1 1 0 8 0 amappl5 104 165 0 154 1 0 1 1 0 8 0 amappl4 96 5745 0 5722 1 0 1 1 0 8 0 amappl3 88 5855 0 5843 1 0 1 1 0 8 0 amappl2 80 45250 0 45185 4 2 2 3 0 8 0 amappl1 72 101754 0 101331 26 17 9 19 0 8 0 amappl 80 12817 0 12780 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 64 153 0 24 3 0 3 3 0 8 0 uaddrrnd 24 5643 0 5629 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5643 0 5629 1 0 1 1 0 8 0 vmmpekpl 168 36878 0 36848 2 0 2 2 0 8 0 vmmpepl 168 654960 0 653317 208 130 78 89 0 357 1 vmsppl 272 5642 0 5629 2 1 1 2 0 8 0 pdppl 4096 11292 0 11258 6 1 5 6 0 8 0 pvpl 32 1480823 0 1466691 452 262 190 239 0 265 74 pmappl 200 5642 0 5629 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 725 0 172 19 2 17 17 0 8 0