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(46e7fd5e4862c1ad,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:500 rtable_walk_helper(fffffd8036db0aa0,ffff800016bfa3d8) at rtable_walk_helper+0x58 sys/net/rtable.c:682 art_table_walk(ffff800000075780,fffffd8036daf580,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075780,fffffd8036daf580,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075780,fffffd8036daf540,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf480,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf440,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf420,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf320,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf2e0,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf2a0,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf280,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf240,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf220,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf200,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf1c0,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf1a0,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf180,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf160,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf140,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf0c0,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf0a0,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf060,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf040,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf020,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf000,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf080,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf0e0,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf100,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf120,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf1e0,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf260,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf2c0,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036daf300,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075780,fffffd8036dafe80,ffffffff8198a4c0,ffff800016bfa3d8) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075780,ffffffff8198a4c0,ffff800016bfa3d8) 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(fffffd80363f7a88) at ip6_mrouter_done+0xb8 sys/netinet6/ip6_mroute.c:529 rip6_detach(fffffd80363f7a88) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd80363f7a88,0) at soclose+0xb2 sys/kern/uipc_socket.c:292 soo_close(fffffd802fdb5f10,ffff800014901758) at soo_close+0x40 fdrop(fffffd802fdb5f10,ffff800014901758) at fdrop+0xc9 sys/kern/kern_descrip.c:1260 closef(fffffd802fdb5f10,ffff800014901758) at closef+0x118 sys/kern/kern_descrip.c:1244 fdfree(ffff800014901758) at fdfree+0xf7 sys/kern/kern_descrip.c:1176 exit1(ffff800014901758,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff800014901758,ffff800016bfa850,ffff800016bfa8c0) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800016bfa920) at syscall+0x508 Xsyscall(6,1,0,1,0,7f7ffffe4844) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe4810, count: -47 ddb> show registers rdi 0x46e7fd5e4862c1ad rsi 0 rbp 0xffff800016bf9110 rbx 0xffff800000075788 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0xda1bd47fa2bb9a63 r12 0 r13 0xfffffd8036daf580 r14 0 r15 0x46e7fd5e4862c1ad rip 0xffffffff819366eb mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800016bf90d0 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=29739 stat=onproc flags process=1008 proc=2000 pri=50, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800014902118,0xffffffff822cbdb0 process=0xffff8000ffffad50 user=0xffff800016bf5000, vmspace=0xfffffd803f014cc0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 5870 224002 77471 0 3 0x82 nanosleep syz-executor.1 72804 48903 77471 0 2 0x2 syz-executor.0 77471 165330 17868 0 3 0x82 thrsleep syz-fuzzer 77471 520144 17868 0 3 0x4000082 nanosleep syz-fuzzer 77471 85761 17868 0 3 0x4000082 thrsleep syz-fuzzer 77471 168789 17868 0 3 0x4000082 kqread syz-fuzzer 77471 13101 17868 0 3 0x4000082 thrsleep syz-fuzzer 77471 88740 17868 0 3 0x4000082 thrsleep syz-fuzzer 77471 36095 17868 0 3 0x4000082 thrsleep syz-fuzzer 17868 456715 56090 0 3 0x10008a pause ksh 56090 63701 88898 0 3 0x92 select sshd 31 509539 1 0 3 0x100083 ttyin getty 88898 339860 1 0 3 0x80 select sshd 33744 294300 36531 73 3 0x100090 kqread syslogd 36531 35853 1 0 3 0x100082 netio syslogd 41337 267657 1 77 3 0x100090 poll dhclient 63162 373008 1 0 3 0x80 poll dhclient 38860 208889 0 0 2 0x14200 zerothread 29248 215135 0 0 3 0x14200 aiodoned aiodoned 99583 179293 0 0 3 0x14200 syncer update 93166 214849 0 0 3 0x14200 cleaner cleaner 4414 201607 0 0 3 0x14200 reaper reaper 175 94899 0 0 3 0x14200 pgdaemon pagedaemon 77141 348131 0 0 3 0x14200 bored crynlk 69259 460759 0 0 3 0x14200 bored crypto 75704 143108 0 0 3 0x40014200 acpi0 acpi0 32331 516438 0 0 3 0x14200 bored softnet 53581 120157 0 0 2 0x14200 systqmp 67466 266724 0 0 3 0x14200 bored systq 98873 400132 0 0 3 0x40014200 bored softclock 54214 146707 0 0 3 0x40014200 idle0 43343 287783 0 0 3 0x14200 bored smr 1 498864 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 6320K 6706K 78643K 10689 0 0 pcb 24 9K 10K 78643K 183 0 0 rtable 106 3K 3K 78643K 234 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 24K 78643K 6 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1217 76K 77K 78643K 1271 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 4 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 6 0K 0K 78643K 6 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 205 0 0 proc 41 30K 54K 78643K 288 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 2 0 0 in_multi 33 2K 2K 78643K 33 0 0 ether_multi 1 0K 0K 78643K 13 0 0 mrt 1 0K 0K 78643K 37 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 188 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 76 20K 20K 78643K 1274 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 NDP 5 0K 0K 78643K 9 0 0 temp 82 2704K 2768K 78643K 3419 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 280 151 0 142 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 26 0 26 2 2 0 1 0 8 0 tcpcb 544 18 0 13 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 4 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 1645 0 231 46 0 46 46 0 8 0 ffsino 240 1645 0 231 84 0 84 84 0 8 0 nchpl 144 2065 0 434 61 0 61 61 0 8 0 uvmvnodes 72 1725 0 0 32 0 32 32 0 8 0 vnodes 200 1725 0 0 91 0 91 91 0 8 0 namei 1024 5125 0 5125 2 1 1 1 0 8 1 scxspl 192 5457 0 5457 8 6 2 6 0 8 2 plimitpl 152 14 0 7 1 0 1 1 0 8 0 sigapl 432 376 0 363 2 0 2 2 0 8 0 futexpl 56 1765 0 1765 1 0 1 1 0 8 1 knotepl 112 57 0 38 1 0 1 1 0 8 0 kqueuepl 104 10 0 8 1 0 1 1 0 8 0 pipepl 112 174 0 155 2 1 1 1 0 8 0 fdescpl 424 377 0 363 2 0 2 2 0 8 0 filepl 120 1569 0 1474 4 0 4 4 0 8 1 lockfpl 104 23 0 23 2 1 1 1 0 8 1 lockfspl 48 10 0 10 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 96 137 0 130 1 0 1 1 0 8 0 zombiepl 144 364 0 363 2 1 1 1 0 8 0 processpl 848 391 0 363 4 0 4 4 0 8 0 procpl 624 593 0 559 4 0 4 4 0 8 1 sockpl 384 222 0 203 3 0 3 3 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 1 0 1 1 1 0 1 0 8 0 mcl4k 4096 8 0 8 1 1 0 1 0 8 0 mcl2k 2048 51797 0 51755 14 4 10 12 0 8 4 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 81796 0 81649 11 1 10 10 0 8 0 bufpl 256 5901 0 1426 280 0 280 280 0 8 0 anonpl 16 45321 0 35323 58 2 56 56 0 62 15 amapchunkpl 152 1522 0 1437 6 2 4 6 0 158 0 amappl16 192 1636 0 1088 39 4 35 39 0 8 7 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 40 0 38 2 1 1 1 0 8 0 amappl13 168 175 0 171 1 0 1 1 0 8 0 amappl12 160 11 0 11 1 1 0 1 0 8 0 amappl11 152 52 0 38 1 0 1 1 0 8 0 amappl10 144 61 0 61 2 2 0 1 0 8 0 amappl9 136 521 0 518 1 0 1 1 0 8 0 amappl8 128 123 0 111 1 0 1 1 0 8 0 amappl7 120 30 0 27 1 0 1 1 0 8 0 amappl6 112 53 0 47 1 0 1 1 0 8 0 amappl5 104 190 0 177 1 0 1 1 0 8 0 amappl4 96 498 0 477 1 0 1 1 0 8 0 amappl3 88 180 0 167 1 0 1 1 0 8 0 amappl2 80 2229 0 2164 4 2 2 3 0 8 0 amappl1 72 16115 0 15700 26 17 9 19 0 8 0 amappl 80 834 0 801 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 24 377 0 363 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 377 0 363 1 0 1 1 0 8 0 vmmpekpl 168 6333 0 6307 2 0 2 2 0 8 0 vmmpepl 168 50120 0 48561 99 15 84 86 0 357 16 vmsppl 272 376 0 363 2 1 1 2 0 8 0 pdppl 4096 760 0 726 6 1 5 6 0 8 0 pvpl 32 147004 0 134029 145 5 140 140 0 265 34 pmappl 200 376 0 363 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 424 0 12 12 0 12 12 0 8 0