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(2ea7fa2499051009,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:502 rtable_walk_helper(fffffd8036d72a50,ffff800016b281c8) at rtable_walk_helper+0x58 sys/net/rtable.c:683 art_table_walk(ffff800000075880,fffffd8036d712e0,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075880,fffffd8036d712e0,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075880,fffffd8036d712a0,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71240,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d711a0,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71100,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d710e0,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d710a0,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71060,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71020,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71000,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71040,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71080,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d710c0,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71120,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71140,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71160,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71180,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d711c0,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d711e0,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71200,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71220,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71260,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71280,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d712c0,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71300,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71320,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71360,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d713a0,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d713c0,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d713e0,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71400,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d71ee0,ffffffff8119d580,ffff800016b281c8) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075880,ffffffff8119d580,ffff800016b281c8) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,0,ffffffff81eb1460,0) at rtable_walk+0xd4 ip6_mrouter_done(fffffd80363dbd88) at ip6_mrouter_done+0xb5 rip6_detach(fffffd80363dbd88) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd80363dbd88,0) at soclose+0xb2 sys/kern/uipc_socket.c:303 soo_close(fffffd8037ffbd20,ffff8000ffff2c70) at soo_close+0x40 fdrop(fffffd8037ffbd20,ffff8000ffff2c70) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd8037ffbd20,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,ffff800016b28660,ffff800016b286b0) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800016b28730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,1,0,1,0,7f7fffff67c4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff6790, count: -47 ddb> show registers rdi 0x2ea7fa2499051009 rsi 0 rbp 0xffff800016b26f00 rbx 0xffff800000075888 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0x9bfb34103bc3984c r12 0 r13 0xfffffd8036d712e0 r14 0 r15 0x2ea7fa2499051009 rip 0xffffffff81eb148b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800016b26ec0 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.1) pid=39008 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2ee8,0xffffffff825a03f8 process=0xffff8000ffff6d90 user=0xffff800016b23000, vmspace=0xfffffd803f013cc0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 91599 412287 0 0 3 0x14200 bored sosplice 49024 236679 36181 0 3 0x82 nanosleep syz-executor.1 25181 75312 36181 0 2 0x2 syz-executor.0 36181 433126 69788 0 3 0x82 thrsleep syz-fuzzer 36181 153929 69788 0 3 0x4000082 nanosleep syz-fuzzer 36181 297028 69788 0 3 0x4000082 kqread syz-fuzzer 36181 199583 69788 0 3 0x4000082 thrsleep syz-fuzzer 36181 28505 69788 0 3 0x4000082 thrsleep syz-fuzzer 36181 91241 69788 0 3 0x4000082 thrsleep syz-fuzzer 36181 209188 69788 0 3 0x4000082 thrsleep syz-fuzzer 69788 391622 20145 0 3 0x10008a pause ksh 20145 442364 95767 0 3 0x92 select sshd 2297 310171 1 0 3 0x100083 ttyin getty 95767 516354 1 0 3 0x80 select sshd 90298 403530 39947 73 3 0x100090 kqread syslogd 39947 26664 1 0 3 0x100082 netio syslogd 65733 387237 1 77 3 0x100090 poll dhclient 8689 409870 1 0 3 0x80 poll dhclient 56985 227299 0 0 2 0x14200 zerothread 45665 12442 0 0 3 0x14200 aiodoned aiodoned 11054 431999 0 0 3 0x14200 syncer update 61523 476474 0 0 3 0x14200 cleaner cleaner 66018 55215 0 0 3 0x14200 reaper reaper 82093 91247 0 0 3 0x14200 pgdaemon pagedaemon 80299 158709 0 0 3 0x14200 bored crynlk 98602 189003 0 0 3 0x14200 bored crypto 91941 404751 0 0 3 0x40014200 acpi0 acpi0 40963 511486 0 0 3 0x14200 bored softnet 90668 498724 0 0 2 0x14200 systqmp 54942 110535 0 0 3 0x14200 bored systq 39399 187494 0 0 3 0x40014200 bored softclock 46080 500306 0 0 3 0x40014200 idle0 33430 296970 0 0 3 0x14200 bored smr 1 448910 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 9499 6460K 6841K 78643K 11386 0 0 pcb 17 8K 9K 78643K 715 0 0 rtable 109 3K 4K 78643K 249 0 0 ifaddr 51 11K 12K 78643K 72 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 30 0 0 iov 0 0K 16K 78643K 117 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1214 76K 76K 78643K 1490 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 6 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 0K 0K 78643K 48 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12723 0 0 file desc 5 13K 25K 78643K 364 0 0 sigio 0 0K 0K 78643K 6 0 0 proc 48 38K 54K 78643K 358 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 96 0 0 in_multi 33 2K 2K 78643K 44 0 0 ether_multi 2 0K 0K 78643K 4 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 66 291K 291K 78643K 66 0 0 exec 0 0K 1K 78643K 212 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 94 21K 30K 78643K 1677 0 0 UVM aobj 18 2K 2K 78643K 18 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 43 0 0 NDP 10 0K 0K 78643K 19 0 0 temp 128 3528K 3594K 78643K 16084 0 0 kqueue 0 0K 0K 78643K 8 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 47 0 45 1 0 1 1 0 8 0 rtentry 112 46 0 2 2 0 2 2 0 8 0 unpcb 120 303 0 295 2 1 1 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 7670 0 7670 1 1 0 1 0 8 0 tcpcb 544 148 0 144 1 0 1 1 0 8 0 ipq 40 4 0 4 2 1 1 1 0 8 1 ipqe 40 8 0 8 2 1 1 1 0 8 1 inpcb 280 959 0 948 4 1 3 3 0 8 2 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 4 0 0 1 0 1 1 0 8 0 ppxss 1128 5 0 5 2 1 1 1 0 8 1 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 10 0 4 1 0 1 1 0 8 0 semapl 112 46 0 36 1 0 1 1 0 8 0 shmpl 112 16 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1919 0 525 46 0 46 46 0 8 0 ffsino 240 1919 0 525 83 0 83 83 0 8 0 nchpl 144 2646 0 1037 60 0 60 60 0 8 0 uvmvnodes 72 2145 0 0 39 0 39 39 0 8 0 vnodes 208 2145 0 0 113 0 113 113 0 8 0 namei 1024 9003 0 9003 3 2 1 1 0 8 1 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 7065 0 7065 10 9 1 7 0 8 1 plimitpl 152 41 0 34 1 0 1 1 0 8 0 sigapl 432 535 0 522 2 0 2 2 0 8 0 futexpl 56 18204 0 18204 2 1 1 1 0 8 1 knotepl 112 126 0 107 1 0 1 1 0 8 0 kqueuepl 104 89 0 87 1 0 1 1 0 8 0 pipepl 112 292 0 273 1 0 1 1 0 8 0 fdescpl 424 536 0 522 2 0 2 2 0 8 0 filepl 120 6344 0 6243 6 1 5 5 0 8 1 lockfpl 104 132 0 131 1 0 1 1 0 8 0 lockfspl 48 47 0 46 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 21 0 11 1 0 1 1 0 8 0 ucredpl 96 433 0 426 1 0 1 1 0 8 0 zombiepl 144 523 0 522 2 1 1 1 0 8 0 processpl 864 551 0 522 4 0 4 4 0 8 0 procpl 632 999 0 964 4 0 4 4 0 8 0 sosppl 128 14 0 14 3 2 1 1 0 8 1 sockpl 384 1313 0 1292 9 3 6 6 0 8 3 mcl64k 65536 283 0 283 29 25 4 29 0 8 4 mcl16k 16384 10 0 10 2 1 1 1 0 8 1 mcl12k 12288 11 0 11 2 1 1 1 0 8 1 mcl9k 9216 7 0 7 2 1 1 1 0 8 1 mcl8k 8192 142 0 142 2 1 1 1 0 8 1 mcl4k 4096 103 0 103 3 2 1 1 0 8 1 mcl2k2 2112 5 0 5 3 2 1 1 0 8 1 mcl2k 2048 46390 0 46348 26 19 7 19 0 8 1 mtagpl 80 10 0 3 2 1 1 1 0 8 0 mbufpl 256 82266 0 82175 28 20 8 21 0 8 0 bufpl 256 6711 0 1825 306 0 306 306 0 8 0 anonpl 16 65642 0 52314 82 12 70 70 0 62 15 amapchunkpl 152 2334 0 2234 12 3 9 9 0 158 4 amappl16 192 2841 0 2098 57 11 46 50 0 8 8 amappl15 184 169 0 168 1 0 1 1 0 8 0 amappl14 176 192 0 187 1 0 1 1 0 8 0 amappl12 160 11 0 9 1 0 1 1 0 8 0 amappl11 152 44 0 33 1 0 1 1 0 8 0 amappl10 144 10 0 8 2 1 1 1 0 8 0 amappl9 136 577 0 570 1 0 1 1 0 8 0 amappl8 128 146 0 123 1 0 1 1 0 8 0 amappl7 120 41 0 37 1 0 1 1 0 8 0 amappl6 112 68 0 59 1 0 1 1 0 8 0 amappl5 104 193 0 181 1 0 1 1 0 8 0 amappl4 96 761 0 734 1 0 1 1 0 8 0 amappl3 88 128 0 123 1 0 1 1 0 8 0 amappl2 80 3722 0 3655 3 1 2 3 0 8 0 amappl1 72 19241 0 18826 28 19 9 20 0 8 0 amappl 80 1218 0 1184 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 17 0 0 1 0 1 1 0 8 0 uaddrrnd 24 536 0 522 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 536 0 522 1 0 1 1 0 8 0 vmmpekpl 168 7620 0 7597 2 0 2 2 0 8 0 vmmpepl 168 70033 0 68243 134 45 89 100 0 357 9 vmsppl 272 535 0 522 2 1 1 2 0 8 0 pdppl 4096 1078 0 1044 6 1 5 6 0 8 0 pvpl 32 196776 0 180429 211 38 173 173 0 265 39 pmappl 200 535 0 522 1 0 1 1 0 8 0 extentpl 40 38 0 22 1 0 1 1 0 8 0 phpool 112 511 0 74 14 0 14 14 0 8 0