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(ba96ea8a081a263d,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:502 rtable_walk_helper(fffffd8036d63ab0,ffff800016f15bb8) at rtable_walk_helper+0x58 sys/net/rtable.c:683 art_table_walk(ffff800000075880,fffffd8036d621a0,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075880,fffffd8036d621a0,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075880,fffffd8036d62160,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62140,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62100,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d620c0,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62060,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62040,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62000,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62020,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62080,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d620a0,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d620e0,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62120,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62180,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62260,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62280,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62340,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62360,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62380,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d623a0,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d623e0,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62400,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62440,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62460,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d624a0,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d624c0,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d624e0,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62520,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62540,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62560,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d625a0,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d62f40,ffffffff8119d580,ffff800016f15bb8) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075880,ffffffff8119d580,ffff800016f15bb8) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,0,ffffffff81eb1460,0) at rtable_walk+0xd4 ip6_mrouter_done(fffffd80302f54b0) at ip6_mrouter_done+0xb5 rip6_detach(fffffd80302f54b0) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd80302f54b0,0) at soclose+0xb2 sys/kern/uipc_socket.c:303 soo_close(fffffd803c7db618,ffff8000ffff3b40) at soo_close+0x40 fdrop(fffffd803c7db618,ffff8000ffff3b40) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd803c7db618,ffff8000ffff3b40) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff8000ffff3b40) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff8000ffff3b40,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff8000ffff3b40,ffff800016f16050,ffff800016f160a0) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800016f16120) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,1,0,1,0,7f7fffffb044) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb010, count: -47 ddb> show registers rdi 0xba96ea8a081a263d rsi 0 rbp 0xffff800016f148f0 rbx 0xffff800000075888 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0x757464bbc47b231e r12 0 r13 0xfffffd8036d621a0 r14 0 r15 0xba96ea8a081a263d rip 0xffffffff81eb148b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800016f148b0 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=268991 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff29f8,0xffffffff825a03f8 process=0xffff8000148a2d98 user=0xffff800016f11000, vmspace=0xfffffd803f013110 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 22459 146563 3039 0 2 0 syz-executor.1 22459 184539 3039 0 3 0x4000080 netio syz-executor.1 99231 444889 1 0 3 0x100083 ttyin getty 82128 95622 61214 0 3 0x82 nanosleep syz-executor.0 3039 523511 61214 0 3 0x82 nanosleep syz-executor.1 19914 238055 0 0 3 0x14200 acct acct 16756 465025 0 0 3 0x14200 bored sosplice 61214 251505 69498 0 3 0x82 thrsleep syz-fuzzer 61214 409033 69498 0 3 0x4000082 thrsleep syz-fuzzer 61214 171925 69498 0 3 0x4000082 thrsleep syz-fuzzer 61214 320587 69498 0 3 0x4000082 thrsleep syz-fuzzer 61214 324797 69498 0 3 0x4000082 kqread syz-fuzzer 61214 256771 69498 0 3 0x4000082 thrsleep syz-fuzzer 61214 446604 69498 0 3 0x4000082 thrsleep syz-fuzzer 69498 10938 90340 0 3 0x10008a pause ksh 90340 338336 44550 0 3 0x92 select sshd 44550 489261 1 0 3 0x80 select sshd 47850 367859 96048 73 3 0x100090 kqread syslogd 96048 405578 1 0 3 0x100082 netio syslogd 63335 247481 1 77 3 0x100090 poll dhclient 49281 405186 1 0 3 0x80 poll dhclient 59919 311322 0 0 2 0x14200 zerothread 42076 39224 0 0 3 0x14200 aiodoned aiodoned 21084 465323 0 0 3 0x14200 syncer update 43444 292212 0 0 3 0x14200 cleaner cleaner 15814 62098 0 0 3 0x14200 reaper reaper 389 479532 0 0 3 0x14200 pgdaemon pagedaemon 96073 179757 0 0 3 0x14200 bored crynlk 35368 178741 0 0 3 0x14200 bored crypto 86439 437350 0 0 3 0x40014200 acpi0 acpi0 28595 72437 0 0 3 0x14200 bored softnet 95782 240656 0 0 2 0x14200 systqmp 95434 170560 0 0 3 0x14200 bored systq 1328 136954 0 0 3 0x40014200 bored softclock 5737 286528 0 0 3 0x40014200 idle0 20702 416962 0 0 3 0x14200 bored smr 1 24077 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 9568 6380K 8117K 78643K 53241 0 0 pcb 15 8K 8K 78643K 798 0 0 rtable 119 12K 12K 78643K 2415 0 0 ifaddr 77 18K 20K 78643K 819 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 263 0 0 iov 0 0K 24K 78643K 680 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1246 78K 79K 78643K 13242 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 103 0 0 VM map 2 0K 0K 78643K 20 0 0 sem 12 1K 1K 78643K 788 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12723 0 0 file desc 6 17K 25K 78643K 6637 0 0 sigio 0 0K 0K 78643K 136 0 0 proc 50 38K 63K 78643K 2082 0 0 subproc 32 2K 2K 78643K 486 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 1K 78643K 3944 0 0 in_multi 33 2K 2K 78643K 1052 0 0 ether_multi 2 0K 0K 78643K 35 0 0 mrt 2 0K 0K 78643K 26 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 1132 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 115 22K 32K 78643K 16523 0 0 UVM aobj 130 4K 4K 78643K 148 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 716 0 0 NDP 18 0K 0K 78643K 258 0 0 temp 212 3540K 4180K 78643K 110496 0 0 kqueue 0 0K 0K 78643K 36 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 64 0 58 1 0 1 1 0 8 0 rtpcb 80 343 0 341 1 0 1 1 0 8 0 rtentry 112 322 0 277 2 0 2 2 0 8 0 unpcb 120 2468 0 2455 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 8779 0 8779 1 1 0 1 0 8 0 tcpcb 544 1230 0 1226 1 0 1 1 0 8 0 ipq 40 20 0 20 10 10 0 1 0 8 0 ipqe 40 50 0 50 10 10 0 1 0 8 0 inpcb 280 5931 0 5920 14 12 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 56 0 52 1 0 1 1 0 8 0 pkpcb 40 24 0 24 8 8 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 117 0 117 15 14 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1406 0 1188 17 3 14 14 0 8 0 art_table 32 1407 0 1188 2 0 2 2 0 8 0 art_node 16 312 0 271 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 782 0 772 1 0 1 1 0 8 0 shmpl 112 146 0 18 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 11376 0 9978 46 0 46 46 0 8 0 ffsino 240 11376 0 9978 83 0 83 83 0 8 0 nchpl 144 22444 0 20841 60 0 60 60 0 8 0 uvmvnodes 72 7969 0 0 145 0 145 145 0 8 0 vnodes 208 7969 0 0 420 0 420 420 0 8 0 namei 1024 80351 0 80351 4 3 1 1 0 8 1 vmpool 520 18 0 18 9 9 0 1 0 8 0 scsiplug 64 12 0 12 8 8 0 1 0 8 0 scxspl 192 62349 0 62349 32 29 3 6 0 8 3 plimitpl 152 586 0 579 1 0 1 1 0 8 0 sigapl 432 6734 0 6720 2 0 2 2 0 8 0 futexpl 56 152805 0 152805 3 2 1 1 0 8 1 knotepl 112 1637 0 1618 1 0 1 1 0 8 0 kqueuepl 104 1548 0 1546 1 0 1 1 0 8 0 pipepl 112 3816 0 3797 11 10 1 2 0 8 0 fdescpl 424 6735 0 6720 2 0 2 2 0 8 0 filepl 120 54966 0 54867 13 9 4 5 0 8 0 lockfpl 104 2633 0 2632 1 0 1 1 0 8 0 lockfspl 48 852 0 851 1 0 1 1 0 8 0 sessionpl 112 47 0 37 1 0 1 1 0 8 0 pgrppl 48 112 0 102 1 0 1 1 0 8 0 ucredpl 96 8756 0 8747 1 0 1 1 0 8 0 zombiepl 144 6722 0 6721 2 1 1 1 0 8 0 processpl 864 6752 0 6721 4 0 4 4 0 8 0 procpl 632 14540 0 14502 5 1 4 5 0 8 0 sosppl 128 88 0 88 15 14 1 1 0 8 1 sockpl 384 8849 0 8825 12 9 3 5 0 8 0 mcl64k 65536 1287 0 1287 108 107 1 33 0 8 1 mcl16k 16384 47 0 47 19 18 1 1 0 8 1 mcl12k 12288 216 0 216 10 9 1 1 0 8 1 mcl9k 9216 73 0 73 22 21 1 1 0 8 1 mcl8k 8192 169 0 169 13 12 1 1 0 8 1 mcl4k 4096 575 0 575 4 3 1 1 0 8 1 mcl2k2 2112 44 0 44 20 19 1 1 0 8 1 mcl2k 2048 65369 0 65326 30 23 7 18 0 8 1 mtagpl 80 179 0 169 4 3 1 1 0 8 0 mbufpl 256 159433 0 159334 92 84 8 30 0 8 0 bufpl 256 25593 0 17621 499 0 499 499 0 8 0 anonpl 16 629423 0 616076 214 144 70 89 0 62 11 amapchunkpl 152 30142 0 30032 91 85 6 29 0 158 0 amappl16 192 35066 0 34278 217 165 52 63 0 8 11 amappl15 184 698 0 697 4 3 1 1 0 8 0 amappl14 176 1049 0 1043 2 1 1 1 0 8 0 amappl13 168 1203 0 1203 5 5 0 1 0 8 0 amappl12 160 464 0 464 3 3 0 1 0 8 0 amappl11 152 418 0 404 1 0 1 1 0 8 0 amappl10 144 1922 0 1920 5 4 1 1 0 8 0 amappl9 136 1410 0 1404 1 0 1 1 0 8 0 amappl8 128 934 0 897 3 1 2 2 0 8 0 amappl7 120 2053 0 2045 1 0 1 1 0 8 0 amappl6 112 391 0 377 1 0 1 1 0 8 0 amappl5 104 964 0 954 1 0 1 1 0 8 0 amappl4 96 7624 0 7597 1 0 1 1 0 8 0 amappl3 88 1671 0 1665 1 0 1 1 0 8 0 amappl2 80 52103 0 52027 4 2 2 3 0 8 0 amappl1 72 128016 0 127591 28 19 9 20 0 8 0 amappl 80 15188 0 15150 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 64 147 0 18 3 0 3 3 0 8 0 uaddrrnd 24 6753 0 6720 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6753 0 6720 1 0 1 1 0 8 0 vmmpekpl 168 41320 0 41293 2 0 2 2 0 8 0 vmmpepl 168 792886 0 790929 341 249 92 113 0 357 3 vmsppl 272 6734 0 6720 3 2 1 2 0 8 0 pdppl 4096 13512 0 13476 6 1 5 6 0 8 0 pvpl 32 1821805 0 1805251 497 323 174 268 0 265 35 pmappl 200 6752 0 6738 1 0 1 1 0 8 0 extentpl 40 38 0 22 1 0 1 1 0 8 0 phpool 112 885 0 258 20 1 19 20 0 8 0