uvm_fault(0xfffffd807f00b730, 0xce4b0f3b, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807f00b730, 0xce4b0f3b, 0, 1) -> e in6_purgeaddr(ffff800000c46700) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 end trace frame: 0xffff800023ba4ed0, count: 0 ddb{1}> trace in6_purgeaddr(ffff800000c46700) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 in6_ifdetach(ffff800000c11800) at in6_ifdetach+0x74 sys/netinet6/in6_ifattach.c:422 if_detach(ffff800000c11800) at if_detach+0x155 sys/net/if.c:1110 tun_clone_destroy(ffff800000c11800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:278 spec_close(ffff800023ba5000) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e78c0d8,7,fffffd807f7c6480,ffff800020ab0780) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd806ca45ac0,ffff800020ab0780) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:301 [inline] vn_closefile(fffffd806ca45ac0,ffff800020ab0780) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:613 fdrop(fffffd806ca45ac0,ffff800020ab0780) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd806ca45ac0,ffff800020ab0780) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020ab0780) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020ab0780,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff800020ab0780,ffff800023ba5290,ffff800023ba52e0) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800023ba5360) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800023ba5360) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,1,0,1,0,7f7ffffd1f94) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd1f60, count: -14 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800023ba4e60 rbx 0 rdx 0x409 rcx 0x40a rax 0 r8 0xffffffff82083cc4 rt_ifa_dellocal+0x44 r9 0x1 r10 0x18 r11 0x132ff049a988d0e4 r12 0xce4b0f33 r13 0 r14 0xffff800000c46700 r15 0xffff800000c11800 rip 0xffffffff8188d995 in6_purgeaddr+0x135 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800023ba4df0 ss 0x10 in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb{1}> show proc PROC (syz-executor.1) pid=222698 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab0018,0xffffffff8267a4c0 process=0xffff800020adc000 user=0xffff800023ba0000, vmspace=0xfffffd807f00b730 estcpu=36, cpticks=6, pctcpu=0.0 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 49760 83977 47795 0 3 0x82 nanosleep syz-executor.0 29607 352844 0 0 3 0x14200 acct acct 85482 166637 1 0 3 0x100083 ttyin getty 52001 514359 0 0 3 0x14200 bored sosplice 47795 60924 98294 0 3 0x82 thrsleep syz-fuzzer 47795 379768 98294 0 3 0x4000082 nanosleep syz-fuzzer 47795 141550 98294 0 3 0x4000082 thrsleep syz-fuzzer 47795 191102 98294 0 3 0x4000082 thrsleep syz-fuzzer 47795 125018 98294 0 3 0x4000082 thrsleep syz-fuzzer 47795 51209 98294 0 7 0x4000082 syz-fuzzer 47795 198236 98294 0 3 0x4000082 thrsleep syz-fuzzer 47795 2136 98294 0 3 0x4000082 thrsleep syz-fuzzer 47795 11565 98294 0 3 0x4000082 thrsleep syz-fuzzer 47795 28678 98294 0 3 0x4000082 thrsleep syz-fuzzer 98294 253298 45273 0 3 0x10008a pause ksh 45273 233627 57213 0 3 0x92 select sshd 57213 29364 1 0 3 0x80 select sshd 68245 157036 85055 74 3 0x100092 bpf pflogd 85055 262100 1 0 3 0x80 netio pflogd 72571 205652 90781 73 3 0x100090 kqread syslogd 90781 512463 1 0 3 0x100082 netio syslogd 91078 333227 0 0 2 0x14200 zerothread 71414 209615 0 0 3 0x14200 aiodoned aiodoned 36634 109499 0 0 3 0x14200 syncer update 70870 481698 0 0 3 0x14200 cleaner cleaner 15961 436607 0 0 3 0x14200 reaper reaper 67498 246896 0 0 3 0x14200 pgdaemon pagedaemon 42137 463441 0 0 3 0x14200 bored crynlk 44254 313829 0 0 3 0x14200 bored crypto 54514 21081 0 0 3 0x40014200 acpi0 acpi0 86260 189547 0 0 3 0x40014200 idle1 35208 77013 0 0 2 0x14200 softnet 10712 334129 0 0 2 0x14200 systqmp 91024 19129 0 0 2 0x14200 systq 59632 490176 0 0 3 0x40014200 bored softclock 75037 409020 0 0 3 0x40014200 idle0 22748 391331 0 0 3 0x14200 bored smr 1 142894 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9661 6575K 7923K 78643K 56811 0 0 pcb 13 12K 14K 78643K 4492 0 0 rtable 228 21K 21K 78643K 7127 0 0 ifaddr 153 41K 45K 78643K 3536 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 2534 0 0 iov 0 0K 32K 78643K 4173 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1235 78K 78K 78643K 19953 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 344 0 0 VM map 158 79K 79K 78643K 225 0 0 sem 12 1K 1K 78643K 4747 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 4 9K 25K 78643K 19822 0 0 sigio 0 0K 0K 78643K 236 0 0 proc 57 51K 95K 78643K 7853 0 0 subproc 23 1K 2K 78643K 2298 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 1917 0 0 in_multi 61 3K 4K 78643K 2698 0 0 ether_multi 1 0K 0K 78643K 226 0 0 mrt 3 0K 0K 78643K 146 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 4067 0 0 pfkey data 0 0K 0K 78643K 6 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 359 1242K 1247K 78643K 70764 0 0 UVM aobj 130 9K 9K 78643K 131 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 4534 0 0 NDP 29 1K 1K 78643K 1128 0 0 temp 278 3566K 4208K 78643K 481969 0 0 kqueue 0 0K 0K 78643K 159 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 307 0 302 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 2126 0 2126 22 21 1 1 0 8 1 rtentry 112 2167 0 2071 7 4 3 3 0 8 0 unpcb 120 12261 0 12215 24 22 2 3 0 8 0 syncache 264 106 0 106 44 44 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 83 0 83 28 28 0 1 0 8 0 tcpcb 544 17645 0 17639 107 105 2 13 0 8 1 ipq 40 3 0 3 2 2 0 1 0 8 0 ipqe 40 6 0 6 2 2 0 1 0 8 0 inpcb 280 37211 0 37207 116 114 2 13 0 8 1 rttmr 72 44 0 43 21 20 1 1 0 8 0 ip6q 72 7 0 7 6 6 0 1 0 8 0 ip6af 40 10 0 10 5 5 0 1 0 8 0 nd6 48 357 0 354 15 14 1 1 0 8 0 pkpcb 40 164 0 164 33 32 1 1 0 8 1 swfcl 56 11 0 0 1 0 1 1 0 8 0 ppxss 1128 521 0 521 57 56 1 1 0 8 1 pffrag 232 572 0 572 59 58 1 1 0 482 1 pffrnode 88 572 0 572 59 58 1 1 0 8 1 pffrent 40 20020 0 20020 59 58 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 1589 0 1523 1 0 1 1 0 8 0 pfstkey 112 1589 0 1523 3 0 3 3 0 8 0 pfstate 328 1589 0 1523 17 10 7 8 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 35 0 29 22 16 6 7 0 8 0 art_heap4 256 9922 0 9527 104 78 26 26 0 8 1 art_table 32 9957 0 9556 13 9 4 4 0 8 0 art_node 16 2159 0 2092 1 0 1 1 0 8 0 sysvmsgpl 40 54 0 42 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 4741 0 4731 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 32195 0 30659 50 0 50 50 0 8 0 ffsino 272 32195 0 30659 105 2 103 103 0 8 0 nchpl 144 71419 0 70952 61 41 20 61 0 8 0 uvmvnodes 72 8552 0 0 156 0 156 156 0 8 0 vnodes 208 8552 0 0 451 0 451 451 0 8 0 namei 1024 255635 0 255635 7 6 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 158 0 2 20 0 20 20 0 8 0 vmpool 552 223 0 67 13 1 12 12 0 8 0 scsiplug 64 21 0 21 14 14 0 1 0 8 0 scxspl 192 211178 0 211178 142 139 3 7 0 8 3 plimitpl 152 1675 0 1668 1 0 1 1 0 8 0 sigapl 432 19628 0 19616 4 2 2 3 0 8 0 futexpl 56 465597 0 465597 2 1 1 1 0 8 1 knotepl 112 4210 0 4191 11 10 1 3 0 8 0 kqueuepl 104 5859 0 5857 11 10 1 4 0 8 0 pipepl 112 12470 0 12454 30 29 1 2 0 8 0 fdescpl 488 19629 0 19616 3 0 3 3 0 8 0 filepl 152 200460 0 200383 116 111 5 14 0 8 1 lockfpl 104 7655 0 7655 5 4 1 1 0 8 1 lockfspl 48 2632 0 2632 5 4 1 1 0 8 1 sessionpl 112 150 0 141 1 0 1 1 0 8 0 pgrppl 48 578 0 569 1 0 1 1 0 8 0 ucredpl 96 21979 0 21970 1 0 1 1 0 8 0 zombiepl 144 19622 0 19619 6 5 1 1 0 8 0 processpl 896 19651 0 19619 5 1 4 5 0 8 0 procpl 632 62959 0 62918 57 52 5 5 0 8 1 srpgc 64 218 0 218 68 67 1 1 0 8 1 sosppl 128 426 0 426 61 60 1 1 0 8 1 sockpl 384 52092 0 52038 170 162 8 24 0 8 2 mcl64k 65536 1724 0 0 189 126 63 66 0 8 1 mcl16k 16384 94 0 0 10 8 2 3 0 8 0 mcl12k 12288 57 0 0 2 0 2 2 0 8 0 mcl9k 9216 57 0 0 3 1 2 2 0 8 0 mcl8k 8192 41 0 0 3 0 3 3 0 8 0 mcl4k 4096 41 0 0 3 0 3 3 0 8 0 mcl2k2 2112 17 0 0 2 0 2 2 0 8 0 mcl2k 2048 291 0 0 25 17 8 25 0 8 0 mtagpl 80 251 0 0 1 0 1 1 0 8 0 mbufpl 256 2026 0 0 42 3 39 39 0 8 0 bufpl 256 81827 0 73011 552 0 552 552 0 8 0 anonpl 16 2447584 0 2417605 596 441 155 156 0 124 12 amapchunkpl 152 147404 0 146699 277 247 30 42 0 158 0 amappl16 192 111014 0 109458 639 551 88 91 0 8 8 amappl15 184 2457 0 2457 15 15 0 1 0 8 0 amappl14 176 4169 0 4161 1 0 1 1 0 8 0 amappl13 168 1861 0 1861 17 17 0 1 0 8 0 amappl12 160 2473 0 2471 1 0 1 1 0 8 0 amappl11 152 3495 0 3487 1 0 1 1 0 8 0 amappl10 144 2570 0 2563 1 0 1 1 0 8 0 amappl9 136 4525 0 4522 1 0 1 1 0 8 0 amappl8 128 4104 0 4029 4 1 3 3 0 8 0 amappl7 120 3114 0 3105 1 0 1 1 0 8 0 amappl6 112 3146 0 3128 1 0 1 1 0 8 0 amappl5 104 3736 0 3725 1 0 1 1 0 8 0 amappl4 96 19952 0 19920 1 0 1 1 0 8 0 amappl3 88 5020 0 4984 1 0 1 1 0 8 0 amappl2 80 150179 0 150095 3 1 2 3 0 8 0 amappl1 72 453559 0 453150 26 16 10 20 0 8 0 amappl 80 65797 0 65677 3 0 3 3 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 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 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 64 130 0 1 3 0 3 3 0 8 0 uaddrrnd 24 19852 0 19616 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 19852 0 19616 2 0 2 2 0 8 0 vmmpekpl 168 137931 0 137869 7 4 3 4 0 8 0 vmmpepl 168 2543815 0 2540649 924 735 189 189 0 357 37 vmsppl 368 19628 0 19616 2 0 2 2 0 8 0 pdppl 4096 39711 0 39522 29 4 25 25 0 8 0 pvpl 32 6273632 0 6255329 1010 787 223 236 0 265 24 pmappl 232 19851 0 19683 15 4 11 11 0 8 1 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 1207 0 368 24 0 24 24 0 8 0