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(91ec81053b92c6ca,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:502 rtable_walk_helper(fffffd8036d6f9a0,ffff8000148983c8) at rtable_walk_helper+0x58 sys/net/rtable.c:683 art_table_walk(ffff800000075880,fffffd8036d6e3a0,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075880,fffffd8036d6e3a0,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075880,fffffd8036d6e380,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e360,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e300,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e2e0,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e280,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e220,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e200,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e1c0,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e1a0,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e140,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e0e0,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e0c0,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e0a0,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e080,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e040,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e020,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e000,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e060,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e100,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e120,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e160,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e180,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e1e0,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e240,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e260,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e2a0,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e2c0,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e320,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e340,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6e3e0,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d6eec0,ffffffff81536b70,ffff8000148983c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075880,ffffffff81536b70,ffff8000148983c8) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,0,ffffffff82089a70,0) at rtable_walk+0xd4 ip6_mrouter_done(fffffd80363e5908) at ip6_mrouter_done+0xb5 rip6_detach(fffffd80363e5908) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd80363e5908,0) at soclose+0xb2 sys/kern/uipc_socket.c:303 soo_close(fffffd802ee1be98,ffff8000ffff3650) at soo_close+0x40 fdrop(fffffd802ee1be98,ffff8000ffff3650) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd802ee1be98,ffff8000ffff3650) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff8000ffff3650) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff8000ffff3650,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff8000ffff3650,ffff800014898860,ffff8000148988b0) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800014898930) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,1,0,1,0,7f7ffffcb194) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcb160, count: -47 ddb> show registers rdi 0x91ec81053b92c6ca rsi 0 rbp 0xffff800014897100 rbx 0xffff800000075888 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0x443bf8b94d1e3e2d r12 0 r13 0xfffffd8036d6e3a0 r14 0 r15 0x91ec81053b92c6ca rip 0xffffffff82089a9b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000148970c0 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=462546 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2780,0xffffffff825a33e0 process=0xffff8000ffff6a30 user=0xffff800014893000, vmspace=0xfffffd803f014dd0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 90178 241494 0 0 3 0x14200 bored sosplice 67519 445957 0 0 3 0x14200 acct acct 71572 150166 1 0 3 0x100083 ttyin getty 92869 301768 64605 0 3 0x82 nanosleep syz-executor.0 46933 310131 64605 0 3 0x82 nanosleep syz-executor.1 64605 511317 63569 0 3 0x82 kqread syz-fuzzer 64605 7397 63569 0 3 0x4000082 nanosleep syz-fuzzer 64605 356515 63569 0 3 0x4000082 thrsleep syz-fuzzer 64605 509809 63569 0 3 0x4000082 thrsleep syz-fuzzer 64605 451894 63569 0 3 0x4000082 thrsleep syz-fuzzer 64605 226265 63569 0 3 0x4000082 thrsleep syz-fuzzer 64605 449212 63569 0 3 0x4000082 thrsleep syz-fuzzer 63569 54052 36639 0 3 0x10008a pause ksh 36639 204997 66227 0 3 0x92 select sshd 66227 67073 1 0 3 0x80 select sshd 49071 298269 26971 73 3 0x100090 kqread syslogd 26971 88656 1 0 3 0x100082 netio syslogd 33427 242210 1 77 3 0x100090 poll dhclient 44023 120888 1 0 3 0x80 poll dhclient 27122 347497 0 0 2 0x14200 zerothread 81654 285146 0 0 3 0x14200 aiodoned aiodoned 38415 119865 0 0 3 0x14200 syncer update 59404 215176 0 0 3 0x14200 cleaner cleaner 53733 314323 0 0 3 0x14200 reaper reaper 21543 486741 0 0 3 0x14200 pgdaemon pagedaemon 28162 489611 0 0 3 0x14200 bored crynlk 66931 410174 0 0 3 0x14200 bored crypto 41717 6741 0 0 3 0x40014200 acpi0 acpi0 49497 431846 0 0 3 0x14200 bored softnet 36891 305929 0 0 2 0x14200 systqmp 90951 73846 0 0 3 0x14200 bored systq 16265 167486 0 0 3 0x40014200 bored softclock 43756 441858 0 0 3 0x40014200 idle0 62326 519800 0 0 3 0x14200 bored smr 1 484979 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 9494 6330K 6833K 78643K 11871 0 0 pcb 15 8K 8K 78643K 69 0 0 rtable 114 4K 4K 78643K 311 0 0 ifaddr 55 12K 13K 78643K 103 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 49 0 0 iov 0 0K 16K 78643K 46 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1218 77K 77K 78643K 1641 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 14 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 0K 0K 78643K 57 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12723 0 0 file desc 5 13K 25K 78643K 493 0 0 sigio 0 0K 0K 78643K 9 0 0 proc 48 38K 63K 78643K 420 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 66 0 0 in_multi 33 2K 2K 78643K 56 0 0 ether_multi 2 0K 0K 78643K 7 0 0 mrt 2 0K 0K 78643K 3 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 48 212K 212K 78643K 48 0 0 exec 0 0K 1K 78643K 256 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 92 21K 30K 78643K 1953 0 0 UVM aobj 23 2K 2K 78643K 23 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 34 0 0 NDP 11 0K 0K 78643K 28 0 0 temp 140 3529K 3598K 78643K 9895 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 7 0 0 1 0 1 1 0 8 0 rtpcb 80 43 0 41 1 0 1 1 0 8 0 rtentry 112 49 0 3 2 0 2 2 0 8 0 unpcb 120 221 0 213 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 3811 0 3811 1 1 0 1 0 8 0 tcpcb 544 98 0 94 1 0 1 1 0 8 0 inpcb 280 280 0 269 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 pkpcb 40 2 0 2 1 0 1 1 0 8 1 ppxss 1128 7 0 7 3 2 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 214 0 0 14 0 14 14 0 8 0 art_table 32 215 0 0 2 0 2 2 0 8 0 art_node 16 47 0 5 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 2 1 0 1 1 0 8 0 semapl 112 53 0 43 1 0 1 1 0 8 0 shmpl 112 21 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2157 0 758 46 0 46 46 0 8 0 ffsino 240 2157 0 758 83 0 83 83 0 8 0 nchpl 144 3070 0 1456 60 0 60 60 0 8 0 uvmvnodes 72 2491 0 0 46 0 46 46 0 8 0 vnodes 208 2491 0 0 132 0 132 132 0 8 0 namei 1024 8510 0 8510 2 1 1 1 0 8 1 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 8404 0 8404 8 7 1 7 0 8 1 plimitpl 152 36 0 29 1 0 1 1 0 8 0 sigapl 432 665 0 652 2 0 2 2 0 8 0 futexpl 56 8274 0 8274 1 0 1 1 0 8 1 knotepl 112 134 0 115 1 0 1 1 0 8 0 kqueuepl 104 119 0 117 1 0 1 1 0 8 0 pipepl 112 376 0 357 1 0 1 1 0 8 0 fdescpl 424 666 0 652 2 0 2 2 0 8 0 filepl 120 3810 0 3713 4 0 4 4 0 8 1 lockfpl 104 135 0 134 1 0 1 1 0 8 0 lockfspl 48 52 0 51 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 22 0 12 1 0 1 1 0 8 0 ucredpl 96 582 0 574 1 0 1 1 0 8 0 zombiepl 144 653 0 651 2 1 1 1 0 8 0 processpl 864 682 0 651 4 0 4 4 0 8 0 procpl 632 1269 0 1232 4 0 4 4 0 8 0 sosppl 128 5 0 5 2 1 1 1 0 8 1 sockpl 384 552 0 533 3 0 3 3 0 8 1 mcl64k 65536 16 0 16 3 2 1 1 0 8 1 mcl16k 16384 3 0 3 3 3 0 1 0 8 0 mcl12k 12288 7 0 7 2 1 1 1 0 8 1 mcl9k 9216 11 0 11 4 3 1 1 0 8 1 mcl8k 8192 8 0 8 3 2 1 1 0 8 1 mcl4k 4096 35 0 35 2 1 1 1 0 8 1 mcl2k2 2112 2 0 2 2 2 0 1 0 8 0 mcl2k 2048 58571 0 58522 18 11 7 15 0 8 0 mtagpl 80 24 0 6 2 1 1 1 0 8 0 mbufpl 256 96415 0 96298 13 4 9 10 0 8 0 bufpl 256 7826 0 2666 323 0 323 323 0 8 0 anonpl 16 69323 0 56620 70 13 57 68 0 62 5 amapchunkpl 152 2717 0 2614 11 6 5 9 0 158 0 amappl16 192 3035 0 2332 44 8 36 44 0 8 0 amappl14 176 269 0 264 1 0 1 1 0 8 0 amappl12 160 16 0 13 1 0 1 1 0 8 0 amappl11 152 46 0 34 1 0 1 1 0 8 0 amappl10 144 227 0 225 2 1 1 1 0 8 0 amappl9 136 566 0 560 1 0 1 1 0 8 0 amappl8 128 140 0 120 1 0 1 1 0 8 0 amappl7 120 253 0 248 1 0 1 1 0 8 0 amappl6 112 69 0 62 1 0 1 1 0 8 0 amappl5 104 160 0 149 1 0 1 1 0 8 0 amappl4 96 882 0 856 1 0 1 1 0 8 0 amappl3 88 122 0 116 1 0 1 1 0 8 0 amappl2 80 4526 0 4459 3 1 2 3 0 8 0 amappl1 72 21237 0 20820 26 17 9 20 0 8 0 amappl 80 1488 0 1453 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 22 0 0 1 0 1 1 0 8 0 uaddrrnd 24 666 0 652 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 666 0 652 1 0 1 1 0 8 0 vmmpekpl 168 7986 0 7962 2 0 2 2 0 8 0 vmmpepl 168 83424 0 81679 111 28 83 94 0 357 6 vmsppl 272 665 0 652 2 1 1 2 0 8 0 pdppl 4096 1338 0 1304 6 1 5 6 0 8 0 pvpl 32 213834 0 198165 170 16 154 165 0 265 26 pmappl 200 665 0 652 1 0 1 1 0 8 0 extentpl 40 38 0 22 1 0 1 1 0 8 0 phpool 112 479 0 28 13 0 13 13 0 8 0