uvm_fault(0xfffffd807f008450, 0xa0a292f, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xfffffd807f008450, 0xa0a292f, 0, 1) -> e in6_purgeaddr(ffff800000b09d00) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 end trace frame: 0xffff800022d69360, count: 0 ddb{0}> trace in6_purgeaddr(ffff800000b09d00) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 in6_ifdetach(ffff800000adf000) at in6_ifdetach+0x74 sys/netinet6/in6_ifattach.c:422 if_detach(ffff800000adf000) at if_detach+0x148 sys/net/if.c:1157 tun_clone_destroy(ffff800000adf000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:278 spec_close(ffff800022d69490) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e130688,7,fffffd807f7c6ae0,ffff800020ace518) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd80641ed3a8,ffff800020ace518) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:301 [inline] vn_closefile(fffffd80641ed3a8,ffff800020ace518) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:613 fdrop(fffffd80641ed3a8,ffff800020ace518) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd80641ed3a8,ffff800020ace518) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020ace518) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020ace518,19,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff800020ace518,19) at postsig+0x4e3 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff800020ace518,19) at postsig+0x4e3 sys/kern/kern_sig.c:1431 userret(ffff800020ace518) at userret+0x199 sys/kern/kern_sig.c:1889 Xsyscall(6,38,7f7ffffed650,3,0,23a086cd000) at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffed640, count: -14 ddb{0}> show registers rdi 0x1 rsi 0x1 rbp 0xffff800022d692f0 rbx 0 rdx 0xa2 rcx 0 rax 0x3 r8 0x1 r9 0x1 r10 0x1464a3c11068a8e r11 0x7a32e59306f0f842 r12 0xa0a2927 __kernel_end_phys+0x78a2927 r13 0 r14 0xffff800000b09d00 r15 0xffff800000adf000 rip 0xffffffff816df045 in6_purgeaddr+0x135 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800022d69280 ss 0x10 in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb{0}> show proc PROC (syz-executor.0) pid=30855 stat=onproc flags process=a proc=2000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ace2a0,0xffff800020ab0790 process=0xffff800020adca80 user=0xffff800022d64000, vmspace=0xfffffd807f008450 estcpu=36, cpticks=1, pctcpu=0.27 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 26558 68109 83296 0 3 0x82 nanosleep syz-executor.1 85820 381400 0 0 3 0x14200 acct acct 2938 138302 1 0 3 0x100083 ttyin getty 84412 459329 0 0 3 0x14200 bored sosplice 83296 364990 87469 0 3 0x82 nanosleep syz-fuzzer 83296 124767 87469 0 3 0x4000082 nanosleep syz-fuzzer 83296 263985 87469 0 3 0x4000082 thrsleep syz-fuzzer 83296 153292 87469 0 3 0x4000082 thrsleep syz-fuzzer 83296 164953 87469 0 2 0x4000082 syz-fuzzer 83296 82476 87469 0 3 0x4000082 thrsleep syz-fuzzer 83296 19065 87469 0 3 0x4000082 thrsleep syz-fuzzer 83296 143199 87469 0 3 0x4000082 thrsleep syz-fuzzer 83296 155751 87469 0 3 0x4000082 thrsleep syz-fuzzer 83296 359054 87469 0 3 0x4000082 thrsleep syz-fuzzer 87469 442410 20549 0 3 0x10008a pause ksh 20549 376522 38496 0 3 0x92 select sshd 38496 153031 1 0 3 0x80 select sshd 46455 357769 64230 74 3 0x100092 bpf pflogd 64230 153914 1 0 3 0x80 netio pflogd 68688 221369 63335 73 3 0x100090 kqread syslogd 63335 495307 1 0 3 0x100082 netio syslogd 58513 283686 1 77 3 0x100090 poll dhclient 15536 386049 1 0 3 0x80 poll dhclient 59145 511682 0 0 2 0x14200 zerothread 21464 302575 0 0 3 0x14200 aiodoned aiodoned 7172 428815 0 0 3 0x14200 syncer update 3306 261859 0 0 3 0x14200 cleaner cleaner 29446 207213 0 0 7 0x14200 reaper 41624 283775 0 0 3 0x14200 pgdaemon pagedaemon 10898 342652 0 0 3 0x14200 bored crynlk 12356 354688 0 0 3 0x14200 bored crypto 78999 200094 0 0 3 0x40014200 acpi0 acpi0 37203 137318 0 0 3 0x40014200 idle1 21102 63462 0 0 2 0x14200 softnet 71057 66172 0 0 3 0x14200 bored systqmp 93265 246544 0 0 3 0x14200 bored systq 1832 374342 0 0 3 0x40014200 bored softclock 83559 31227 0 0 3 0x40014200 idle0 67694 236226 0 0 3 0x14200 bored smr 1 491800 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9604 6455K 7745K 78643K 16272 0 0 pcb 13 10K 12K 78643K 595 0 0 rtable 101 6K 6K 78643K 1564 0 0 ifaddr 90 20K 22K 78643K 534 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1604 0 0 iov 0 0K 32K 78643K 1295 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1227 77K 78K 78643K 3266 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 30 0 0 VM map 30 15K 15K 78643K 40 0 0 sem 12 0K 1K 78643K 1125 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1809 196K 290K 78643K 12766 0 0 file desc 4 9K 25K 78643K 2425 0 0 sigio 0 0K 0K 78643K 21 0 0 proc 62 63K 95K 78643K 1182 0 0 subproc 23 1K 2K 78643K 221 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 276 0 0 in_multi 24 1K 2K 78643K 252 0 0 ether_multi 1 0K 0K 78643K 21 0 0 mrt 0 0K 0K 78643K 8 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 84 371K 371K 78643K 84 0 0 exec 0 0K 1K 78643K 643 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 170 235K 235K 78643K 9695 0 0 UVM aobj 130 4K 4K 78643K 138 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 2K 78643K 579 0 0 NDP 21 0K 0K 78643K 157 0 0 temp 197 3564K 4200K 78643K 44899 0 0 kqueue 0 0K 0K 78643K 13 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 40 0 35 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 184 0 182 1 0 1 1 0 8 0 rtentry 112 225 0 189 2 0 2 2 0 8 0 unpcb 120 1671 0 1658 4 2 2 2 0 8 1 syncache 264 13 0 13 7 6 1 1 0 8 1 tcpqe 32 234 0 234 2 2 0 1 0 8 0 tcpcb 544 1118 0 1114 12 10 2 4 0 8 1 inpcb 280 3788 0 3781 23 20 3 13 0 8 2 rttmr 72 1 0 1 1 1 0 1 0 8 0 ip6q 72 4 0 4 2 2 0 1 0 8 0 ip6af 40 8 0 8 2 2 0 1 0 8 0 nd6 48 30 0 28 4 3 1 1 0 8 0 pkpcb 40 17 0 17 6 5 1 1 0 8 1 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 63 0 63 9 9 0 1 0 8 0 pffrag 232 63 0 63 8 7 1 1 0 482 1 pffrnode 88 63 0 63 8 7 1 1 0 8 1 pffrent 40 2377 0 2377 8 7 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 24 202 0 137 1 0 1 1 0 8 0 pfstkey 112 202 0 137 3 0 3 3 0 8 0 pfstate 328 202 0 136 6 0 6 6 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 6 0 3 6 3 3 4 0 8 0 art_heap4 256 941 0 737 26 11 15 15 0 8 0 art_table 32 947 0 740 2 0 2 2 0 8 0 art_node 16 224 0 190 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 15 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 1123 0 1113 1 0 1 1 0 8 0 shmpl 112 136 0 8 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 5632 0 4220 46 0 46 46 0 8 0 ffsino 272 5632 0 4220 96 1 95 95 0 8 0 nchpl 144 10555 0 8928 61 0 61 61 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 36085 0 36085 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 28 0 0 4 0 4 4 0 8 0 vmpool 552 38 0 10 4 2 2 3 0 8 0 scsiplug 64 3 0 3 2 1 1 1 0 8 1 scxspl 192 30518 0 30518 23 20 3 7 0 8 3 plimitpl 152 207 0 199 1 0 1 1 0 8 0 sigapl 432 2594 0 2580 4 2 2 3 0 8 0 futexpl 56 63305 0 63305 1 0 1 1 0 8 1 knotepl 112 428 0 409 1 0 1 1 0 8 0 kqueuepl 104 950 0 948 1 0 1 1 0 8 0 pipepl 112 1672 0 1654 5 4 1 2 0 8 0 fdescpl 488 2595 0 2580 3 0 3 3 0 8 0 filepl 152 25028 0 24938 27 20 7 15 0 8 3 lockfpl 104 1916 0 1915 1 0 1 1 0 8 0 lockfspl 48 557 0 556 1 0 1 1 0 8 0 sessionpl 112 33 0 22 1 0 1 1 0 8 0 pgrppl 48 69 0 58 1 0 1 1 0 8 0 ucredpl 96 2680 0 2671 1 0 1 1 0 8 0 zombiepl 144 2582 0 2580 1 0 1 1 0 8 0 processpl 896 2613 0 2580 5 1 4 5 0 8 0 procpl 632 7968 0 7926 6 1 5 5 0 8 0 srpgc 64 19 0 19 7 7 0 1 0 8 0 sosppl 128 69 0 69 10 9 1 1 0 8 1 sockpl 384 5702 0 5680 47 40 7 24 0 8 4 mcl64k 65536 261 0 0 33 14 19 33 0 8 1 mcl16k 16384 22 0 0 3 1 2 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 16 0 0 2 0 2 2 0 8 0 mcl8k 8192 15 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 169 0 0 20 1 19 20 0 8 0 mtagpl 80 44 0 0 1 0 1 1 0 8 0 mbufpl 256 532 0 0 23 0 23 23 0 8 0 bufpl 256 15240 0 8182 442 0 442 442 0 8 0 anonpl 16 343798 0 317877 172 60 112 112 0 124 6 amapchunkpl 152 18611 0 18191 64 42 22 22 0 158 4 amappl16 192 15511 0 14263 155 85 70 75 0 8 7 amappl15 184 13 0 12 1 0 1 1 0 8 0 amappl14 176 1403 0 1397 1 0 1 1 0 8 0 amappl13 168 11 0 10 2 1 1 1 0 8 0 amappl12 160 354 0 351 1 0 1 1 0 8 0 amappl11 152 196 0 180 1 0 1 1 0 8 0 amappl10 144 298 0 290 1 0 1 1 0 8 0 amappl9 136 837 0 834 1 0 1 1 0 8 0 amappl8 128 467 0 421 3 1 2 2 0 8 0 amappl7 120 350 0 341 1 0 1 1 0 8 0 amappl6 112 174 0 164 1 0 1 1 0 8 0 amappl5 104 594 0 579 1 0 1 1 0 8 0 amappl4 96 2921 0 2888 1 0 1 1 0 8 0 amappl3 88 766 0 760 1 0 1 1 0 8 0 amappl2 80 19202 0 19125 3 1 2 3 0 8 0 amappl1 72 68130 0 67676 26 16 10 20 0 8 0 amappl 80 8474 0 8411 2 0 2 2 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 18 0 17 1 0 1 1 0 8 0 aobjpl 64 137 0 8 3 0 3 3 0 8 0 uaddrrnd 24 2633 0 2580 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2633 0 2580 1 0 1 1 0 8 0 vmmpekpl 168 24321 0 24277 3 0 3 3 0 8 0 vmmpepl 168 337046 0 334525 268 115 153 157 0 357 35 vmsppl 368 2594 0 2579 2 0 2 2 0 8 0 pdppl 4096 5273 0 5206 10 1 9 9 0 8 0 pvpl 32 871943 0 848305 322 98 224 235 0 265 25 pmappl 232 2632 0 2589 4 1 3 3 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 687 0 46 19 0 19 19 0 8 0