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(bbee6eb9e8706f3b,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:502 rtable_walk_helper(fffffd8036d78a90,ffff800014936938) at rtable_walk_helper+0x58 sys/net/rtable.c:683 art_table_walk(ffff800000075880,fffffd8036d77260,ffffffff81536b70,ffff800014936938) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075880,fffffd8036d77260,ffffffff81536b70,ffff800014936938) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075880,fffffd8036d77220,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77200,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d771c0,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d771a0,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77180,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77120,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d770e0,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d770c0,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77060,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77040,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77000,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77020,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77080,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d770a0,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77100,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77140,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77160,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d771e0,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77240,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77280,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d772e0,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77380,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77440,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77480,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77540,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77580,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d775a0,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d775c0,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77620,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77640,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d77f60,ffffffff81536b70,ffff800014936938) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075880,ffffffff81536b70,ffff800014936938) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,0,ffffffff82089a70,0) at rtable_walk+0xd4 ip6_mrouter_done(fffffd80363dfa88) at ip6_mrouter_done+0xb5 rip6_detach(fffffd80363dfa88) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd80363dfa88,0) at soclose+0xb2 sys/kern/uipc_socket.c:303 soo_close(fffffd8036226e90,ffff8000ffff29f8) at soo_close+0x40 fdrop(fffffd8036226e90,ffff8000ffff29f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd8036226e90,ffff8000ffff29f8) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff8000ffff29f8) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff8000ffff29f8,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff8000ffff29f8,ffff800014936dd0,ffff800014936e20) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800014936ea0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,1,0,1,0,7f7fffff3bc4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff3b90, count: -47 ddb> show registers rdi 0xbbee6eb9e8706f3b rsi 0 rbp 0xffff800014935670 rbx 0xffff800000075888 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0x3230f9402fd39301 r12 0 r13 0xfffffd8036d77260 r14 0 r15 0xbbee6eb9e8706f3b rip 0xffffffff82089a9b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800014935630 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=197379 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff3160,0xffffffff825a33e0 process=0xffff8000ffff7450 user=0xffff800014931000, vmspace=0xfffffd803f014330 estcpu=29, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 48963 19929 31678 0 2 0 syz-executor.1 48963 231387 31678 0 2 0x4000000 syz-executor.1 31678 317394 60600 0 3 0x82 nanosleep syz-executor.1 31619 144301 60600 0 3 0x82 nanosleep syz-executor.0 40667 180375 0 0 3 0x14200 bored sosplice 60600 80175 5155 0 3 0x82 thrsleep syz-fuzzer 60600 314581 5155 0 3 0x4000082 thrsleep syz-fuzzer 60600 217381 5155 0 3 0x4000082 thrsleep syz-fuzzer 60600 394464 5155 0 3 0x4000082 thrsleep syz-fuzzer 60600 69587 5155 0 3 0x4000082 kqread syz-fuzzer 60600 456493 5155 0 3 0x4000082 thrsleep syz-fuzzer 60600 505127 5155 0 3 0x4000082 thrsleep syz-fuzzer 5155 517045 89320 0 3 0x10008a pause ksh 89320 448889 31670 0 3 0x92 select sshd 85160 302253 1 0 3 0x100083 ttyin getty 31670 38815 1 0 3 0x80 select sshd 68247 504881 81984 73 3 0x100090 kqread syslogd 81984 304825 1 0 3 0x100082 netio syslogd 20120 312431 1 77 3 0x100090 poll dhclient 88216 351693 1 0 3 0x80 poll dhclient 62722 291944 0 0 2 0x14200 zerothread 64793 416688 0 0 3 0x14200 aiodoned aiodoned 88746 332672 0 0 3 0x14200 syncer update 72897 192879 0 0 3 0x14200 cleaner cleaner 57942 383582 0 0 3 0x14200 reaper reaper 64067 70084 0 0 3 0x14200 pgdaemon pagedaemon 80456 101035 0 0 3 0x14200 bored crynlk 73656 227990 0 0 3 0x14200 bored crypto 81286 182971 0 0 3 0x40014200 acpi0 acpi0 48592 160798 0 0 3 0x14200 bored softnet 68603 63539 0 0 2 0x14200 systqmp 15034 68488 0 0 3 0x14200 bored systq 3309 46166 0 0 3 0x40014200 bored softclock 68687 154249 0 0 3 0x40014200 idle0 36775 420796 0 0 3 0x14200 bored smr 1 169403 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 9537 6995K 7640K 78643K 17352 0 0 pcb 15 8K 8K 78643K 859 0 0 rtable 119 12K 12K 78643K 1240 0 0 ifaddr 67 15K 16K 78643K 287 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 144 0 0 iov 0 0K 28K 78643K 237 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1213 76K 77K 78643K 3474 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 38 0 0 VM map 2 0K 0K 78643K 6 0 0 sem 12 0K 0K 78643K 287 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12723 0 0 file desc 6 17K 25K 78643K 2788 0 0 sigio 1 0K 0K 78643K 42 0 0 proc 49 38K 63K 78643K 739 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 258 0 0 in_multi 33 2K 2K 78643K 205 0 0 ether_multi 2 0K 0K 78643K 16 0 0 mrt 2 0K 0K 78643K 414 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 90 397K 397K 78643K 90 0 0 exec 0 0K 1K 78643K 468 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 91 21K 29K 78643K 7308 0 0 UVM aobj 105 3K 3K 78643K 117 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 280 0 0 NDP 15 0K 0K 78643K 84 0 0 temp 191 3540K 4179K 78643K 38736 0 0 kqueue 0 0K 0K 78643K 16 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 16 0 10 1 0 1 1 0 8 0 rtpcb 80 135 0 133 1 0 1 1 0 8 0 rtentry 112 100 0 55 2 0 2 2 0 8 0 unpcb 120 823 0 815 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 4922 0 4922 1 1 0 1 0 8 0 tcpcb 544 525 0 521 1 0 1 1 0 8 0 inpcb 280 1894 0 1885 3 2 1 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 12 0 12 4 4 0 1 0 8 0 ppxss 1128 43 0 43 6 5 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 439 0 221 14 0 14 14 0 8 0 art_table 32 440 0 221 2 0 2 2 0 8 0 art_node 16 96 0 55 1 0 1 1 0 8 0 sysvmsgpl 40 32 0 20 1 0 1 1 0 8 0 semapl 112 283 0 273 1 0 1 1 0 8 0 shmpl 112 115 0 12 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 5347 0 3957 46 0 46 46 0 8 0 ffsino 240 5347 0 3957 83 0 83 83 0 8 0 nchpl 144 9261 0 7661 60 0 60 60 0 8 0 uvmvnodes 72 6219 0 0 114 0 114 114 0 8 0 vnodes 208 6219 0 0 328 0 328 328 0 8 0 namei 1024 28647 0 28647 3 2 1 1 0 8 1 vmpool 520 4 0 4 2 2 0 1 0 8 0 scsiplug 64 3 0 3 2 2 0 1 0 8 0 scxspl 192 26462 0 26462 14 13 1 7 0 8 1 plimitpl 152 294 0 287 1 0 1 1 0 8 0 sigapl 432 2944 0 2930 2 0 2 2 0 8 0 futexpl 56 47671 0 47671 1 0 1 1 0 8 1 knotepl 112 499 0 480 1 0 1 1 0 8 0 kqueuepl 104 498 0 496 1 0 1 1 0 8 0 pipepl 112 2534 0 2515 5 3 2 2 0 8 1 fdescpl 424 2945 0 2930 2 0 2 2 0 8 0 filepl 120 17458 0 17361 6 2 4 5 0 8 1 lockfpl 104 862 0 861 1 0 1 1 0 8 0 lockfspl 48 293 0 292 1 0 1 1 0 8 0 sessionpl 112 22 0 12 1 0 1 1 0 8 0 pgrppl 48 46 0 36 1 0 1 1 0 8 0 ucredpl 96 2957 0 2950 1 0 1 1 0 8 0 zombiepl 144 2932 0 2931 3 2 1 1 0 8 0 processpl 864 2961 0 2931 4 0 4 4 0 8 0 procpl 632 6334 0 6297 5 1 4 5 0 8 0 sosppl 128 17 0 17 5 5 0 1 0 8 0 sockpl 384 2891 0 2872 5 2 3 4 0 8 1 mcl64k 65536 66 0 66 11 10 1 1 0 8 1 mcl16k 16384 12 0 12 6 5 1 1 0 8 1 mcl12k 12288 34 0 34 8 7 1 1 0 8 1 mcl9k 9216 37 0 37 7 6 1 1 0 8 1 mcl8k 8192 49 0 49 10 9 1 1 0 8 1 mcl4k 4096 126 0 126 2 1 1 1 0 8 1 mcl2k2 2112 14 0 14 8 8 0 1 0 8 0 mcl2k 2048 58488 0 58430 19 11 8 16 0 8 0 mtagpl 80 71 0 51 2 1 1 1 0 8 0 mbufpl 256 109243 0 109105 16 6 10 11 0 8 0 bufpl 256 12466 0 6234 390 0 390 390 0 8 0 anonpl 16 231997 0 219405 107 55 52 69 0 62 0 amapchunkpl 152 12261 0 12158 37 32 5 15 0 158 0 amappl16 192 13030 0 12309 65 28 37 48 0 8 0 amappl15 184 10 0 10 2 2 0 1 0 8 0 amappl14 176 803 0 796 2 1 1 1 0 8 0 amappl13 168 421 0 420 3 2 1 1 0 8 0 amappl12 160 12 0 9 1 0 1 1 0 8 0 amappl11 152 61 0 50 1 0 1 1 0 8 0 amappl10 144 378 0 378 2 2 0 1 0 8 0 amappl9 136 1821 0 1813 1 0 1 1 0 8 0 amappl8 128 1347 0 1322 1 0 1 1 0 8 0 amappl7 120 424 0 419 1 0 1 1 0 8 0 amappl6 112 69 0 60 1 0 1 1 0 8 0 amappl5 104 194 0 183 1 0 1 1 0 8 0 amappl4 96 2828 0 2802 1 0 1 1 0 8 0 amappl3 88 1675 0 1666 1 0 1 1 0 8 0 amappl2 80 22530 0 22454 4 2 2 3 0 8 0 amappl1 72 60446 0 60024 28 19 9 20 0 8 0 amappl 80 6662 0 6626 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 64 116 0 12 2 0 2 2 0 8 0 uaddrrnd 24 2949 0 2930 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2949 0 2930 1 0 1 1 0 8 0 vmmpekpl 168 23368 0 23341 2 0 2 2 0 8 0 vmmpepl 168 343377 0 341515 195 95 100 102 0 357 18 vmsppl 272 2944 0 2930 2 1 1 2 0 8 0 pdppl 4096 5904 0 5868 6 1 5 6 0 8 0 pvpl 32 763823 0 748052 298 131 167 247 0 265 37 pmappl 200 2948 0 2934 1 0 1 1 0 8 0 extentpl 40 38 0 22 1 0 1 1 0 8 0 phpool 112 569 0 48 15 0 15 15 0 8 0