ykernel: 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(a48c5450cdcf984c,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:502 rtable_walk_helper(fffffd8036d66aa0,ffff800015959d28) at rtable_walk_helper+0x58 sys/net/rtable.c:683 art_table_walk(ffff800000075880,fffffd8036d653a0,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075880,fffffd8036d653a0,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075880,fffffd8036d65360,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65340,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65320,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65300,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d652c0,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65280,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65260,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65200,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d651e0,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65180,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65160,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65140,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65120,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d650e0,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d650c0,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d650a0,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65040,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65020,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65000,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65060,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65080,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65100,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d651a0,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d651c0,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65220,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65240,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d652a0,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d652e0,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65380,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d653c0,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d65f60,ffffffff814b1de0,ffff800015959d28) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075880,ffffffff814b1de0,ffff800015959d28) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,0,ffffffff81fe6690,0) at rtable_walk+0xd4 ip6_mrouter_done(fffffd8036fea480) at ip6_mrouter_done+0xb5 rip6_detach(fffffd8036fea480) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd8036fea480,0) at soclose+0xb2 sys/kern/uipc_socket.c:303 soo_close(fffffd802d8939f0,ffff8000ffff2ee8) at soo_close+0x40 fdrop(fffffd802d8939f0,ffff8000ffff2ee8) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd802d8939f0,ffff8000ffff2ee8) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff8000ffff2ee8) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff8000ffff2ee8,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff8000ffff2ee8,ffff80001595a1c0,ffff80001595a210) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff80001595a290) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,1,0,1,0,7f7ffffe8694) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8660, count: -47 ddb> show registers rdi 0xa48c5450cdcf984c rsi 0 rbp 0xffff800015958a60 rbx 0xffff800000075888 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0xae504e477fc73b86 r12 0 r13 0xfffffd8036d653a0 r14 0 r15 0xa48c5450cdcf984c rip 0xffffffff81fe66bb mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800015958a20 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=332615 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2c70,0xffffffff8256d418 process=0xffff8000ffff6370 user=0xffff800015955000, vmspace=0xfffffd803f013bb0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 2982 179875 79311 0 2 0 syz-executor.0 2982 512362 79311 0 3 0x4000080 fsleep syz-executor.0 5912 471716 1 0 3 0x100083 ttyin getty 27821 173248 69512 0 3 0x82 nanosleep syz-executor.1 26056 517498 0 0 3 0x14200 bored sosplice 79311 236475 69512 0 3 0x82 nanosleep syz-executor.0 69512 141087 87411 0 3 0x82 thrsleep syz-fuzzer 69512 29209 87411 0 3 0x4000082 thrsleep syz-fuzzer 69512 256446 87411 0 3 0x4000082 thrsleep syz-fuzzer 69512 221483 87411 0 3 0x4000082 kqread syz-fuzzer 69512 207466 87411 0 3 0x4000082 thrsleep syz-fuzzer 69512 490807 87411 0 3 0x4000082 thrsleep syz-fuzzer 69512 30219 87411 0 3 0x4000082 thrsleep syz-fuzzer 87411 2450 81059 0 3 0x10008a pause ksh 81059 495472 24347 0 3 0x92 select sshd 24347 236297 1 0 3 0x80 select sshd 40100 6124 43777 73 3 0x100090 kqread syslogd 43777 2066 1 0 3 0x100082 netio syslogd 89990 489365 1 77 3 0x100090 poll dhclient 65956 117440 1 0 3 0x80 poll dhclient 54930 173351 0 0 2 0x14200 zerothread 28483 437406 0 0 3 0x14200 aiodoned aiodoned 29994 469666 0 0 3 0x14200 syncer update 81845 181786 0 0 3 0x14200 cleaner cleaner 40289 366565 0 0 3 0x14200 reaper reaper 12783 272641 0 0 3 0x14200 pgdaemon pagedaemon 42544 176741 0 0 3 0x14200 bored crynlk 58706 479459 0 0 3 0x14200 bored crypto 19159 501616 0 0 3 0x40014200 acpi0 acpi0 74965 438256 0 0 3 0x14200 bored softnet 92602 178760 0 0 2 0x14200 systqmp 86371 343223 0 0 3 0x14200 bored systq 36678 101419 0 0 3 0x40014200 bored softclock 6111 353817 0 0 3 0x40014200 idle0 24463 489471 0 0 3 0x14200 bored smr 1 480206 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 9535 6347K 6974K 78643K 15595 0 0 pcb 15 8K 8K 78643K 320 0 0 rtable 116 4K 4K 78643K 866 0 0 ifaddr 65 15K 16K 78643K 333 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 117 0 0 iov 0 0K 24K 78643K 253 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1218 77K 77K 78643K 3884 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 37 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 0K 0K 78643K 268 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12723 0 0 file desc 6 17K 25K 78643K 2218 0 0 sigio 0 0K 0K 78643K 16 0 0 proc 50 38K 63K 78643K 721 0 0 subproc 32 2K 2K 78643K 121 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 214 0 0 in_multi 33 2K 2K 78643K 172 0 0 ether_multi 2 0K 0K 78643K 11 0 0 mrt 2 0K 0K 78643K 5 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 114 503K 503K 78643K 114 0 0 exec 0 0K 1K 78643K 438 0 0 pfkey data 0 0K 0K 78643K 2 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 107 22K 31K 78643K 6125 0 0 UVM aobj 96 3K 3K 78643K 110 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 264 0 0 NDP 14 0K 0K 78643K 96 0 0 temp 184 3539K 3615K 78643K 52045 0 0 kqueue 0 0K 0K 78643K 21 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 18 0 10 1 0 1 1 0 8 0 rtpcb 80 119 0 117 1 0 1 1 0 8 0 rtentry 112 100 0 54 2 0 2 2 0 8 0 unpcb 120 1307 0 1299 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 7179 0 7179 1 1 0 1 0 8 0 tcpcb 544 472 0 468 1 0 1 1 0 8 0 ipq 40 4 0 4 2 2 0 1 0 8 0 ipqe 40 10 0 10 2 2 0 1 0 8 0 inpcb 280 1410 0 1395 3 1 2 2 0 8 0 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 14 0 10 1 0 1 1 0 8 0 pkpcb 40 14 0 14 5 4 1 1 0 8 1 ppxss 1128 50 0 50 12 11 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 443 0 227 14 0 14 14 0 8 0 art_table 32 444 0 227 2 0 2 2 0 8 0 art_node 16 97 0 54 1 0 1 1 0 8 0 sysvmsgpl 40 28 0 21 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 266 0 256 1 0 1 1 0 8 0 shmpl 112 108 0 14 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 5562 0 4172 46 0 46 46 0 8 0 ffsino 240 5562 0 4172 83 0 83 83 0 8 0 nchpl 144 9897 0 8287 60 0 60 60 0 8 0 uvmvnodes 72 6185 0 0 113 0 113 113 0 8 0 vnodes 208 6185 0 0 326 0 326 326 0 8 0 namei 1024 36331 0 36331 3 2 1 1 0 8 1 scsiplug 64 6 0 6 4 3 1 1 0 8 1 scxspl 192 23526 0 23526 12 11 1 7 0 8 1 plimitpl 152 201 0 194 1 0 1 1 0 8 0 sigapl 432 2375 0 2361 2 0 2 2 0 8 0 futexpl 56 54204 0 54203 3 2 1 1 0 8 0 knotepl 112 497 0 478 1 0 1 1 0 8 0 kqueuepl 104 547 0 545 1 0 1 1 0 8 0 pipepl 112 1558 0 1535 5 4 1 2 0 8 0 fdescpl 424 2376 0 2361 2 0 2 2 0 8 0 filepl 120 23847 0 23744 11 7 4 5 0 8 0 lockfpl 104 726 0 725 1 0 1 1 0 8 0 lockfspl 48 262 0 261 1 0 1 1 0 8 0 sessionpl 112 23 0 13 1 0 1 1 0 8 0 pgrppl 48 41 0 31 1 0 1 1 0 8 0 ucredpl 96 8660 0 8653 1 0 1 1 0 8 0 zombiepl 144 2362 0 2361 3 2 1 1 0 8 0 processpl 864 2391 0 2361 4 0 4 4 0 8 0 procpl 632 5164 0 5127 4 0 4 4 0 8 0 sosppl 128 41 0 41 10 9 1 1 0 8 1 sockpl 384 2875 0 2856 10 7 3 4 0 8 1 mcl64k 65536 759 0 759 68 67 1 33 0 8 1 mcl16k 16384 64 0 64 10 10 0 1 0 8 0 mcl12k 12288 51 0 51 7 6 1 1 0 8 1 mcl9k 9216 24 0 24 8 7 1 1 0 8 1 mcl8k 8192 65 0 65 7 6 1 1 0 8 1 mcl4k 4096 183 0 183 5 4 1 1 0 8 1 mcl2k2 2112 16 0 16 8 7 1 1 0 8 1 mcl2k 2048 53141 0 53093 20 13 7 14 0 8 0 mtagpl 80 65 0 47 2 1 1 1 0 8 0 mbufpl 256 110242 0 110121 57 46 11 30 0 8 0 bufpl 256 11859 0 5638 389 0 389 389 0 8 0 anonpl 16 252552 0 239096 150 79 71 71 0 62 14 amapchunkpl 152 10569 0 10453 30 24 6 15 0 158 0 amappl16 192 13454 0 12686 127 80 47 51 0 8 8 amappl15 184 200 0 200 2 2 0 1 0 8 0 amappl14 176 388 0 385 1 0 1 1 0 8 0 amappl13 168 563 0 560 1 0 1 1 0 8 0 amappl12 160 6 0 4 1 0 1 1 0 8 0 amappl11 152 63 0 51 1 0 1 1 0 8 0 amappl10 144 7 0 6 2 1 1 1 0 8 0 amappl9 136 1663 0 1655 1 0 1 1 0 8 0 amappl8 128 1240 0 1209 3 1 2 2 0 8 0 amappl7 120 65 0 60 1 0 1 1 0 8 0 amappl6 112 71 0 59 1 0 1 1 0 8 0 amappl5 104 351 0 341 1 0 1 1 0 8 0 amappl4 96 2539 0 2506 1 0 1 1 0 8 0 amappl3 88 632 0 627 1 0 1 1 0 8 0 amappl2 80 18657 0 18580 3 1 2 3 0 8 0 amappl1 72 50840 0 50414 30 21 9 20 0 8 0 amappl 80 5478 0 5439 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 64 109 0 14 2 0 2 2 0 8 0 uaddrrnd 24 2376 0 2361 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2376 0 2361 1 0 1 1 0 8 0 vmmpekpl 168 19571 0 19550 2 0 2 2 0 8 0 vmmpepl 168 283974 0 282041 210 119 91 108 0 357 6 vmsppl 272 2375 0 2361 2 1 1 2 0 8 0 pdppl 4096 4758 0 4722 6 1 5 6 0 8 0 pvpl 32 694312 0 677654 312 138 174 214 0 265 37 pmappl 200 2375 0 2361 1 0 1 1 0 8 0 extentpl 40 38 0 22 1 0 1 1 0 8 0 phpool 112 671 0 152 15 0 15 15 0 8 0