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(721c7e0b92afaea8,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:502 rtable_walk_helper(fffffd8036d6aa60,ffff80001594a698) at rtable_walk_helper+0x58 sys/net/rtable.c:683 art_table_walk(ffff800000075880,fffffd8036d690e0,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075880,fffffd8036d690e0,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075880,fffffd8036d69080,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69060,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69020,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69000,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69040,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d690a0,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d690c0,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69100,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69140,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69180,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d691a0,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d691e0,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69200,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69220,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69260,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d692a0,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d692c0,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d692e0,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69380,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d693a0,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69400,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69440,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69460,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69480,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d694a0,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d694c0,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d694e0,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69600,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69660,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69680,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d69f40,ffffffff8119d580,ffff80001594a698) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075880,ffffffff8119d580,ffff80001594a698) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,0,ffffffff81eb1460,0) at rtable_walk+0xd4 ip6_mrouter_done(fffffd803c821a80) at ip6_mrouter_done+0xb5 rip6_detach(fffffd803c821a80) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd803c821a80,0) at soclose+0xb2 sys/kern/uipc_socket.c:303 soo_close(fffffd802fa45718,ffff8000ffff2c70) at soo_close+0x40 fdrop(fffffd802fa45718,ffff8000ffff2c70) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd802fa45718,ffff8000ffff2c70) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff8000ffff2c70) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff8000ffff2c70,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff8000ffff2c70,ffff80001594ab30,ffff80001594ab80) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff80001594ac00) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,1,0,1,0,7f7ffffcdcd4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcdca0, count: -47 ddb> show registers rdi 0x721c7e0b92afaea8 rsi 0 rbp 0xffff8000159493d0 rbx 0xffff800000075888 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0x340759491b61a156 r12 0 r13 0xfffffd8036d690e0 r14 0 r15 0x721c7e0b92afaea8 rip 0xffffffff81eb148b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800015949390 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=4518 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff3160,0xffffffff825a03f8 process=0xffff8000ffff77b0 user=0xffff800015945000, vmspace=0xfffffd803f013ee0 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 39498 326740 0 0 3 0x14200 bored sosplice 86911 469461 86955 0 3 0x82 nanosleep syz-executor.0 90812 125214 86955 0 3 0x82 nanosleep syz-executor.1 86955 416956 5946 0 3 0x82 thrsleep syz-fuzzer 86955 48407 5946 0 3 0x4000082 thrsleep syz-fuzzer 86955 123901 5946 0 3 0x4000082 thrsleep syz-fuzzer 86955 366055 5946 0 3 0x4000082 thrsleep syz-fuzzer 86955 67862 5946 0 3 0x4000082 thrsleep syz-fuzzer 86955 17595 5946 0 3 0x4000082 kqread syz-fuzzer 86955 315491 5946 0 3 0x4000082 thrsleep syz-fuzzer 86955 219483 5946 0 3 0x4000082 thrsleep syz-fuzzer 5946 60436 74175 0 3 0x10008a pause ksh 74175 209327 674 0 3 0x92 select sshd 33801 116317 1 0 3 0x100083 ttyin getty 674 419121 1 0 3 0x80 select sshd 42750 514176 41692 73 3 0x100090 kqread syslogd 41692 56956 1 0 3 0x100082 netio syslogd 21598 85611 1 77 3 0x100090 poll dhclient 89480 314877 1 0 3 0x80 poll dhclient 21089 57378 0 0 2 0x14200 zerothread 28851 234034 0 0 3 0x14200 aiodoned aiodoned 90136 429033 0 0 3 0x14200 syncer update 17752 207666 0 0 3 0x14200 cleaner cleaner 87926 311991 0 0 3 0x14200 reaper reaper 87165 139795 0 0 3 0x14200 pgdaemon pagedaemon 44387 376415 0 0 3 0x14200 bored crynlk 80737 287547 0 0 3 0x14200 bored crypto 82626 364166 0 0 3 0x40014200 acpi0 acpi0 64565 79613 0 0 3 0x14200 bored softnet 8832 195207 0 0 2 0x14200 systqmp 31769 513236 0 0 3 0x14200 bored systq 91371 106635 0 0 3 0x40014200 bored softclock 23755 437751 0 0 3 0x40014200 idle0 92123 349653 0 0 3 0x14200 bored smr 1 442449 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 9462 6444K 6827K 78643K 10710 0 0 pcb 15 8K 8K 78643K 28 0 0 rtable 106 3K 3K 78643K 196 0 0 ifaddr 38 10K 10K 78643K 38 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 15 0 0 iov 0 0K 12K 78643K 10 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1218 77K 77K 78643K 1275 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 8 0K 0K 78643K 10 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12723 0 0 file desc 5 13K 25K 78643K 71 0 0 proc 48 38K 63K 78643K 349 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 3 0 0 in_multi 33 2K 2K 78643K 33 0 0 ether_multi 2 0K 0K 78643K 2 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 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 87 20K 21K 78643K 990 0 0 UVM aobj 4 2K 2K 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 8 0 0 NDP 6 0K 0K 78643K 10 0 0 temp 92 3525K 3592K 78643K 3336 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 rtpcb 80 33 0 31 1 0 1 1 0 8 0 rtentry 112 46 0 2 2 0 2 2 0 8 0 unpcb 120 61 0 53 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 5975 0 5975 1 0 1 1 0 8 1 tcpcb 544 18 0 14 1 0 1 1 0 8 0 inpcb 280 61 0 52 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 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 213 0 0 14 0 14 14 0 8 0 art_table 32 214 0 0 2 0 2 2 0 8 0 art_node 16 45 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 0 1 0 1 1 0 8 0 semapl 112 6 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 1477 0 80 46 0 46 46 0 8 0 ffsino 240 1477 0 80 83 0 83 83 0 8 0 nchpl 144 1772 0 160 60 0 60 60 0 8 0 uvmvnodes 72 1560 0 0 29 0 29 29 0 8 0 vnodes 208 1560 0 0 83 0 83 83 0 8 0 namei 1024 4343 0 4343 2 1 1 1 0 8 1 scxspl 192 4855 0 4855 9 8 1 7 0 8 1 plimitpl 152 16 0 9 1 0 1 1 0 8 0 sigapl 432 242 0 229 2 0 2 2 0 8 0 futexpl 56 1067 0 1067 1 0 1 1 0 8 1 knotepl 112 71 0 52 1 0 1 1 0 8 0 kqueuepl 104 32 0 30 1 0 1 1 0 8 0 pipepl 112 154 0 135 1 0 1 1 0 8 0 fdescpl 424 243 0 229 2 0 2 2 0 8 0 filepl 120 1368 0 1271 4 0 4 4 0 8 1 lockfpl 104 26 0 25 1 0 1 1 0 8 0 lockfspl 48 11 0 10 1 0 1 1 0 8 0 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 96 135 0 128 1 0 1 1 0 8 0 zombiepl 144 230 0 228 2 1 1 1 0 8 0 processpl 864 258 0 228 4 0 4 4 0 8 0 procpl 632 318 0 281 4 0 4 4 0 8 0 sosppl 128 3 0 3 1 0 1 1 0 8 1 sockpl 384 156 0 137 3 0 3 3 0 8 1 mcl64k 65536 3 0 3 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 2 0 1 1 0 1 1 0 8 0 mcl8k 8192 1 0 1 1 0 1 1 0 8 1 mcl4k 4096 12 0 12 2 1 1 1 0 8 1 mcl2k 2048 42717 0 42674 20 10 10 18 0 8 4 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 70205 0 70124 17 7 10 11 0 8 1 bufpl 256 6244 0 1367 305 0 305 305 0 8 0 anonpl 16 36299 0 23674 58 2 56 56 0 62 4 amapchunkpl 152 1157 0 1054 9 2 7 7 0 158 2 amappl16 192 1068 0 371 38 0 38 38 0 8 2 amappl14 176 56 0 52 1 0 1 1 0 8 0 amappl13 168 1 0 1 1 1 0 1 0 8 0 amappl12 160 11 0 8 1 0 1 1 0 8 0 amappl11 152 44 0 33 1 0 1 1 0 8 0 amappl10 144 6 0 6 1 1 0 1 0 8 0 amappl9 136 593 0 585 1 0 1 1 0 8 0 amappl8 128 167 0 143 1 0 1 1 0 8 0 amappl7 120 33 0 30 1 0 1 1 0 8 0 amappl6 112 68 0 60 1 0 1 1 0 8 0 amappl5 104 134 0 123 1 0 1 1 0 8 0 amappl4 96 452 0 424 1 0 1 1 0 8 0 amappl3 88 132 0 126 1 0 1 1 0 8 0 amappl2 80 1152 0 1086 3 1 2 3 0 8 0 amappl1 72 13821 0 13410 28 18 10 20 0 8 1 amappl 80 539 0 504 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 24 243 0 229 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 243 0 229 1 0 1 1 0 8 0 vmmpekpl 168 5922 0 5901 2 0 2 2 0 8 0 vmmpepl 168 35749 0 34010 123 28 95 95 0 357 15 vmsppl 272 242 0 229 2 0 2 2 0 8 1 pdppl 4096 492 0 458 6 0 6 6 0 8 1 pvpl 32 128037 0 112480 161 21 140 140 0 265 13 pmappl 200 242 0 229 1 0 1 1 0 8 0 extentpl 40 38 0 22 1 0 1 1 0 8 0 phpool 112 461 0 21 13 0 13 13 0 8 0