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(64c89bd655fdb930,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:500 rtable_walk_helper(fffffd8036db4ac0,ffff800016bfa608) at rtable_walk_helper+0x58 sys/net/rtable.c:682 art_table_walk(ffff800000075780,fffffd8036db3360,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075780,fffffd8036db3360,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075780,fffffd8036db3320,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3300,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db32e0,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db32a0,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3240,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3200,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db31e0,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3180,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3160,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3120,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db30a0,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3060,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3040,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3020,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3000,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3080,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db30c0,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db30e0,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3100,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3140,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db31a0,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db31c0,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3220,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3260,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3280,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db32c0,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3340,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3380,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db33a0,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db33e0,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036db3f00,ffffffff8198a4c0,ffff800016bfa608) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075780,ffffffff8198a4c0,ffff800016bfa608) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,ffffffff819366c0,0) at rtable_walk+0xc7 sys/net/rtable.c:706 ip6_mrouter_done(fffffd803dada900) at ip6_mrouter_done+0xb8 sys/netinet6/ip6_mroute.c:529 rip6_detach(fffffd803dada900) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd803dada900,0) at soclose+0xb2 sys/kern/uipc_socket.c:292 soo_close(fffffd802fce3e20,ffff800014902ad8) at soo_close+0x40 fdrop(fffffd802fce3e20,ffff800014902ad8) at fdrop+0xc9 sys/kern/kern_descrip.c:1260 closef(fffffd802fce3e20,ffff800014902ad8) at closef+0x118 sys/kern/kern_descrip.c:1244 fdfree(ffff800014902ad8) at fdfree+0xf7 sys/kern/kern_descrip.c:1176 exit1(ffff800014902ad8,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff800014902ad8,ffff800016bfaa80,ffff800016bfaaf0) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800016bfab50) at syscall+0x508 Xsyscall(6,1,0,1,0,7f7ffffe7a04) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe79d0, count: -47 ddb> show registers rdi 0x64c89bd655fdb930 rsi 0 rbp 0xffff800016bf9340 rbx 0xffff800000075788 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0xb3665d0272137325 r12 0 r13 0xfffffd8036db3360 r14 0 r15 0x64c89bd655fdb930 rip 0xffffffff819366eb mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800016bf9300 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=127010 stat=onproc flags process=1008 proc=2000 pri=50, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000149025f8,0xffffffff822cbdb0 process=0xffff8000ffffa360 user=0xffff800016bf5000, vmspace=0xfffffd803f014ee0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 40870 397473 50974 0 3 0x82 nanosleep syz-executor.0 30370 383715 50974 0 2 0x2 syz-executor.1 50974 296650 62809 0 3 0x82 thrsleep syz-fuzzer 50974 215757 62809 0 3 0x4000082 nanosleep syz-fuzzer 50974 450633 62809 0 3 0x4000082 thrsleep syz-fuzzer 50974 342049 62809 0 3 0x4000082 kqread syz-fuzzer 50974 189072 62809 0 3 0x4000082 thrsleep syz-fuzzer 50974 381914 62809 0 3 0x4000082 thrsleep syz-fuzzer 50974 362722 62809 0 3 0x4000082 thrsleep syz-fuzzer 62809 242771 94800 0 3 0x10008a pause ksh 94800 332292 94615 0 3 0x92 select sshd 13570 338666 1 0 3 0x100083 ttyin getty 94615 151092 1 0 3 0x80 select sshd 53523 6520 78719 73 3 0x100090 kqread syslogd 78719 83474 1 0 3 0x100082 netio syslogd 76194 436095 1 77 3 0x100090 poll dhclient 46566 156875 1 0 3 0x80 poll dhclient 95256 372945 0 0 2 0x14200 zerothread 32032 443523 0 0 3 0x14200 aiodoned aiodoned 105 21565 0 0 3 0x14200 syncer update 30413 107190 0 0 3 0x14200 cleaner cleaner 44063 285535 0 0 3 0x14200 reaper reaper 57290 237319 0 0 3 0x14200 pgdaemon pagedaemon 18810 135079 0 0 3 0x14200 bored crynlk 73828 402877 0 0 3 0x14200 bored crypto 28114 308501 0 0 3 0x40014200 acpi0 acpi0 571 131093 0 0 3 0x14200 bored softnet 18263 286711 0 0 2 0x14200 systqmp 52076 191706 0 0 3 0x14200 bored systq 10829 421897 0 0 3 0x40014200 bored softclock 75596 57932 0 0 3 0x40014200 idle0 52445 9007 0 0 3 0x14200 bored smr 1 75122 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 9438 6311K 6312K 78643K 10535 0 0 pcb 24 9K 9K 78643K 164 0 0 rtable 106 3K 3K 78643K 235 0 0 ifaddr 34 9K 9K 78643K 34 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 20 0 0 iov 0 0K 8K 78643K 4 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1213 76K 76K 78643K 1222 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 12645 0 0 file desc 5 13K 25K 78643K 158 0 0 proc 40 30K 54K 78643K 289 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 in_multi 33 2K 2K 78643K 33 0 0 ether_multi 1 0K 0K 78643K 16 0 0 mrt 1 0K 0K 78643K 42 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 30 132K 132K 78643K 30 0 0 exec 0 0K 1K 78643K 182 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 81 20K 21K 78643K 1142 0 0 UVM aobj 6 2K 2K 78643K 6 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 5 0K 0K 78643K 9 0 0 temp 82 2704K 2768K 78643K 3280 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 280 131 0 123 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 39 0 39 1 0 1 1 0 8 1 tcpcb 544 10 0 6 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 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1568 0 152 46 0 46 46 0 8 0 ffsino 240 1568 0 152 84 0 84 84 0 8 0 nchpl 144 1927 0 296 61 0 61 61 0 8 0 uvmvnodes 72 1616 0 0 30 0 30 30 0 8 0 vnodes 200 1616 0 0 86 0 86 86 0 8 0 namei 1024 4602 0 4602 2 1 1 1 0 8 1 scxspl 192 4958 0 4958 8 7 1 6 0 8 1 plimitpl 152 14 0 7 1 0 1 1 0 8 0 sigapl 432 329 0 316 2 0 2 2 0 8 0 futexpl 56 1004 0 1004 1 0 1 1 0 8 1 knotepl 112 55 0 36 1 0 1 1 0 8 0 kqueuepl 104 4 0 2 1 0 1 1 0 8 0 pipepl 112 134 0 115 2 1 1 1 0 8 0 fdescpl 424 330 0 316 2 0 2 2 0 8 0 filepl 120 1258 0 1163 4 0 4 4 0 8 1 lockfpl 104 8 0 8 2 1 1 1 0 8 1 lockfspl 48 4 0 4 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 46 0 39 1 0 1 1 0 8 0 zombiepl 144 317 0 316 2 1 1 1 0 8 0 processpl 848 344 0 316 4 0 4 4 0 8 0 procpl 624 477 0 443 3 0 3 3 0 8 0 sockpl 384 183 0 165 3 0 3 3 0 8 1 mcl4k 4096 9 0 9 2 1 1 1 0 8 1 mcl2k 2048 51226 0 51189 12 2 10 10 0 8 5 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 81020 0 80882 11 2 9 9 0 8 0 bufpl 256 5783 0 1309 280 0 280 280 0 8 0 anonpl 16 37365 0 27588 43 2 41 41 0 62 1 amapchunkpl 152 1326 0 1234 6 0 6 6 0 158 2 amappl16 192 1222 0 695 28 0 28 28 0 8 1 amappl14 176 36 0 34 2 1 1 1 0 8 0 amappl13 168 60 0 58 2 1 1 1 0 8 0 amappl12 160 9 0 8 1 0 1 1 0 8 0 amappl11 152 50 0 36 1 0 1 1 0 8 0 amappl10 144 61 0 60 2 1 1 1 0 8 0 amappl9 136 518 0 514 1 0 1 1 0 8 0 amappl8 128 125 0 110 1 0 1 1 0 8 0 amappl7 120 30 0 27 1 0 1 1 0 8 0 amappl6 112 56 0 49 1 0 1 1 0 8 0 amappl5 104 198 0 188 1 0 1 1 0 8 0 amappl4 96 456 0 433 1 0 1 1 0 8 0 amappl3 88 174 0 163 1 0 1 1 0 8 0 amappl2 80 1853 0 1788 4 1 3 3 0 8 1 amappl1 72 15133 0 14722 26 9 17 19 0 8 8 amappl 80 706 0 670 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 330 0 316 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 330 0 316 1 0 1 1 0 8 0 vmmpekpl 168 5966 0 5941 2 0 2 2 0 8 0 vmmpepl 168 44444 0 42910 101 19 82 82 0 357 15 vmsppl 272 329 0 316 2 0 2 2 0 8 1 pdppl 4096 666 0 632 6 0 6 6 0 8 1 pvpl 32 131527 0 118782 112 3 109 109 0 265 3 pmappl 200 329 0 316 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 421 0 8 12 0 12 12 0 8 0