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(11337d14bc27f45,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:500 rtable_walk_helper(fffffd8036db3ac0,ffff800015a08628) at rtable_walk_helper+0x58 sys/net/rtable.c:682 art_table_walk(ffff800000075780,fffffd8036db2180,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075780,fffffd8036db2180,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075780,fffffd8036db20e0,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db20a0,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2060,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2020,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2000,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2040,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2080,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db20c0,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2100,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2120,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2140,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2160,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db21a0,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db21e0,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2200,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2220,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2280,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db22c0,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db22e0,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2300,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2340,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db23c0,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db23e0,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2420,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2440,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2480,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db24a0,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db24c0,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db24e0,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2500,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db2f60,ffffffff81e04650,ffff800015a08628) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075780,ffffffff81e04650,ffff800015a08628) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,ffffffff819bbe10,0) at rtable_walk+0xc7 sys/net/rtable.c:706 ip6_mrouter_done(fffffd8038eae000) at ip6_mrouter_done+0xb8 sys/netinet6/ip6_mroute.c:529 rip6_detach(fffffd8038eae000) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd8038eae000,0) at soclose+0xb2 sys/kern/uipc_socket.c:292 soo_close(fffffd8034d64e98,ffff800014901c38) at soo_close+0x40 fdrop(fffffd8034d64e98,ffff800014901c38) at fdrop+0xc9 sys/kern/kern_descrip.c:1260 closef(fffffd8034d64e98,ffff800014901c38) at closef+0x118 sys/kern/kern_descrip.c:1244 fdfree(ffff800014901c38) at fdfree+0xf7 sys/kern/kern_descrip.c:1176 exit1(ffff800014901c38,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff800014901c38,ffff800015a08aa0,ffff800015a08b10) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800015a08b70) at syscall+0x508 Xsyscall(6,1,0,1,0,7f7ffffd39a4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd3970, count: -47 ddb> show registers rdi 0x11337d14bc27f45 rsi 0 rbp 0xffff800015a07360 rbx 0xffff800000075788 rdx 0 rcx 0 rax 0x204 r8 0x100000 acpi_pdirpa+0xebe68 r9 0x5 r10 0 r11 0xfc1fa7ff6de92bd2 r12 0 r13 0xfffffd8036db2180 r14 0 r15 0x11337d14bc27f45 rip 0xffffffff819bbe3b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800015a07320 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=322370 stat=onproc flags process=1008 proc=2000 pri=50, usrpri=56, nice=20 forw=0xffffffffffffffff, list=0xffff80001496feb0,0xffffffff8229d488 process=0xffff8000ffffaa00 user=0xffff800015a03000, vmspace=0xfffffd803f014440 estcpu=24, cpticks=2, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 53384 294717 73852 0 2 0 syz-executor.0 53384 63099 73852 0 3 0x4000080 fsleep syz-executor.0 73852 95127 29554 0 3 0x82 nanosleep syz-executor.0 1583 54661 29554 0 3 0x82 nanosleep syz-executor.1 29554 60535 1466 0 3 0x82 kqread syz-fuzzer 29554 110861 1466 0 3 0x4000082 thrsleep syz-fuzzer 29554 393915 1466 0 3 0x4000082 thrsleep syz-fuzzer 29554 52839 1466 0 3 0x4000082 thrsleep syz-fuzzer 29554 374231 1466 0 3 0x4000082 thrsleep syz-fuzzer 29554 184389 1466 0 3 0x4000082 thrsleep syz-fuzzer 29554 422591 1466 0 3 0x4000082 thrsleep syz-fuzzer 1466 124884 53566 0 3 0x10008a pause ksh 53566 122861 63619 0 3 0x92 select sshd 71926 448226 1 0 3 0x100083 ttyin getty 63619 359104 1 0 3 0x80 select sshd 26911 23485 12447 73 3 0x100090 kqread syslogd 12447 305571 1 0 3 0x100082 netio syslogd 93526 215436 1 77 3 0x100090 poll dhclient 91843 90419 1 0 3 0x80 poll dhclient 72326 25178 0 0 2 0x14200 zerothread 24601 390640 0 0 3 0x14200 aiodoned aiodoned 40154 262160 0 0 3 0x14200 syncer update 43023 110301 0 0 3 0x14200 cleaner cleaner 81944 58095 0 0 3 0x14200 reaper reaper 78604 27574 0 0 3 0x14200 pgdaemon pagedaemon 16887 469830 0 0 3 0x14200 bored crynlk 26191 265839 0 0 3 0x14200 bored crypto 67211 173791 0 0 3 0x40014200 acpi0 acpi0 59878 431168 0 0 3 0x14200 bored softnet 19465 124485 0 0 2 0x14200 systqmp 93355 12364 0 0 3 0x14200 bored systq 25542 516063 0 0 3 0x40014200 bored softclock 36069 197808 0 0 3 0x40014200 idle0 52072 306382 0 0 3 0x14200 bored smr 1 203802 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 9441 6312K 6634K 78643K 10642 0 0 pcb 25 9K 9K 78643K 173 0 0 rtable 106 3K 3K 78643K 237 0 0 ifaddr 34 9K 9K 78643K 34 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 17 0 0 iov 0 0K 8K 78643K 4 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1210 76K 76K 78643K 1251 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 4 0K 0K 78643K 4 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 6 17K 25K 78643K 190 0 0 proc 40 30K 46K 78643K 287 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 33 0 0 ether_multi 1 0K 0K 78643K 17 0 0 mrt 1 0K 0K 78643K 49 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 184 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 78 20K 20K 78643K 1249 0 0 UVM aobj 4 3K 3K 78643K 4 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 1 0 0 NDP 5 0K 0K 78643K 9 0 0 temp 80 2704K 2768K 78643K 3367 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 280 154 0 145 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 37 0 37 1 0 1 1 0 8 1 tcpcb 544 12 0 8 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 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 semapl 112 2 0 0 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1612 0 196 46 0 46 46 0 8 0 ffsino 240 1612 0 196 84 0 84 84 0 8 0 nchpl 144 2058 0 426 61 0 61 61 0 8 0 uvmvnodes 72 1677 0 0 31 0 31 31 0 8 0 vnodes 200 1677 0 0 89 0 89 89 0 8 0 namei 1024 4935 0 4935 2 1 1 1 0 8 1 scxspl 192 5140 0 5140 8 7 1 6 0 8 1 plimitpl 152 17 0 10 1 0 1 1 0 8 0 sigapl 432 361 0 347 2 0 2 2 0 8 0 futexpl 56 1548 0 1547 1 0 1 1 0 8 0 knotepl 112 59 0 40 1 0 1 1 0 8 0 kqueuepl 104 10 0 8 1 0 1 1 0 8 0 pipepl 112 162 0 143 2 1 1 1 0 8 0 fdescpl 424 362 0 347 2 0 2 2 0 8 0 filepl 120 1496 0 1400 4 0 4 4 0 8 1 lockfpl 104 17 0 17 2 1 1 1 0 8 1 lockfspl 48 7 0 7 2 1 1 1 0 8 1 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 118 0 111 1 0 1 1 0 8 0 zombiepl 144 348 0 347 2 1 1 1 0 8 0 processpl 848 376 0 347 4 0 4 4 0 8 0 procpl 624 554 0 518 4 0 4 4 0 8 1 sockpl 384 206 0 187 3 0 3 3 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl4k 4096 10 0 10 2 1 1 1 0 8 1 mcl2k 2048 51219 0 51177 18 5 13 15 0 8 7 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 81250 0 81105 11 1 10 10 0 8 0 bufpl 256 5814 0 1341 280 0 280 280 0 8 0 anonpl 16 40945 0 30805 44 2 42 42 0 62 0 amapchunkpl 152 1643 0 1543 7 0 7 7 0 158 2 amappl16 192 1238 0 698 28 0 28 28 0 8 0 amappl15 184 77 0 75 1 0 1 1 0 8 0 amappl14 176 111 0 107 2 1 1 1 0 8 0 amappl13 168 81 0 79 1 0 1 1 0 8 0 amappl12 160 11 0 10 1 0 1 1 0 8 0 amappl11 152 53 0 39 1 0 1 1 0 8 0 amappl10 144 60 0 59 2 1 1 1 0 8 0 amappl9 136 553 0 548 1 0 1 1 0 8 0 amappl8 128 128 0 115 1 0 1 1 0 8 0 amappl7 120 31 0 27 1 0 1 1 0 8 0 amappl6 112 52 0 46 1 0 1 1 0 8 0 amappl5 104 138 0 129 1 0 1 1 0 8 0 amappl4 96 496 0 472 1 0 1 1 0 8 0 amappl3 88 325 0 311 1 0 1 1 0 8 0 amappl2 80 2111 0 2034 4 2 2 3 0 8 0 amappl1 72 15717 0 15289 26 13 13 19 0 8 4 amappl 80 812 0 774 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 362 0 347 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 362 0 347 1 0 1 1 0 8 0 vmmpekpl 168 6278 0 6253 2 0 2 2 0 8 0 vmmpepl 168 48316 0 46652 127 20 107 107 0 357 34 vmsppl 272 361 0 347 2 0 2 2 0 8 1 pdppl 4096 730 0 694 6 0 6 6 0 8 1 pvpl 32 140353 0 127165 115 4 111 111 0 265 2 pmappl 200 361 0 347 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 429 0 10 12 0 12 12 0 8 0