uvm_fault(0xfffffd803f014ee0, 0xa0a29347838, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd803f014ee0, 0xa0a29347838, 0, 1) -> e in6_purgeaddr(ffff800000b54b00) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 end trace frame: 0xffff8000159d8da0, count: 0 ddb> trace in6_purgeaddr(ffff800000b54b00) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 in6_ifdetach(ffff800000b21800) at in6_ifdetach+0x74 sys/netinet6/in6_ifattach.c:422 if_detach(ffff800000b21800) at if_detach+0x185 sys/net/if.c:1127 tun_clone_destroy(ffff800000b21800) at tun_clone_destroy+0x1c0 sys/net/if_tun.c:278 spec_close(ffff8000159d8ed0) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd80361648f0,7,fffffd803f7c68a0,ffff8000ffff2ee8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd802d47c790,ffff8000ffff2ee8) at vn_closefile+0xd3 vn_close sys/kern/vfs_vnops.c:301 [inline] vn_closefile(fffffd802d47c790,ffff8000ffff2ee8) at vn_closefile+0xd3 sys/kern/vfs_vnops.c:613 fdrop(fffffd802d47c790,ffff8000ffff2ee8) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd802d47c790,ffff8000ffff2ee8) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff8000ffff2ee8) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff8000ffff2ee8,19,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff8000ffff2ee8,19) at postsig+0x4a6 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff8000ffff2ee8,19) at postsig+0x4a6 sys/kern/kern_sig.c:1431 userret(ffff8000ffff2ee8) at userret+0x159 sys/kern/kern_sig.c:1889 Xsyscall(6,3,7f7ffffcaa80,5,0,b2144cae000) at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffca580, count: -14 ddb> show registers rdi 0 rsi 0 rbp 0xffff8000159d8d30 rbx 0 rdx 0x1 rcx 0xfffffd80378a2800 rax 0 r8 0xffff800000b54000 r9 0x1 r10 0xbc2d35642f263c05 r11 0xba2876f849eea060 r12 0xa0a29347830 r13 0 r14 0xffff800000b54b00 r15 0xffff800000b21800 rip 0xffffffff82085775 in6_purgeaddr+0x135 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff8000159d8cc0 ss 0x10 in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb> show proc PROC (syz-executor.0) pid=213678 stat=onproc flags process=a proc=2000 pri=17, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff3160,0xffff8000ffff8ee8 process=0xffff8000ffff6010 user=0xffff8000159d4000, vmspace=0xfffffd803f014ee0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 94092 246966 64180 0 2 0 syz-executor.1 94092 143619 64180 0 3 0x4000080 ttyout syz-executor.1 33731 268743 0 0 3 0x14200 acct acct 64180 358600 33138 0 2 0x482 syz-executor.1 90751 361462 0 0 3 0x14200 bored sosplice 33138 129728 72098 0 3 0x82 thrsleep syz-fuzzer 33138 463416 72098 0 2 0x4000482 syz-fuzzer 33138 5152 72098 0 3 0x4000082 thrsleep syz-fuzzer 33138 62734 72098 0 3 0x4000082 thrsleep syz-fuzzer 33138 470118 72098 0 2 0x4000082 syz-fuzzer 33138 123254 72098 0 3 0x4000082 thrsleep syz-fuzzer 33138 443620 72098 0 3 0x4000082 thrsleep syz-fuzzer 33138 302575 72098 0 3 0x4000082 thrsleep syz-fuzzer 33138 2282 72098 0 3 0x4000082 thrsleep syz-fuzzer 72098 245017 23356 0 3 0x10008a pause ksh 23356 87253 64664 0 3 0x92 select sshd 14276 20473 1 0 3 0x100083 ttyin getty 64664 303957 1 0 3 0x80 select sshd 58398 254224 75554 73 3 0x100090 kqread syslogd 75554 279323 1 0 3 0x100082 netio syslogd 156 456844 0 0 2 0x14200 zerothread 52534 95793 0 0 3 0x14200 aiodoned aiodoned 31606 242984 0 0 3 0x14200 syncer update 96954 639 0 0 3 0x14200 cleaner cleaner 92132 323451 0 0 3 0x14200 reaper reaper 6838 20722 0 0 3 0x14200 pgdaemon pagedaemon 40597 217369 0 0 3 0x14200 bored crynlk 31245 473092 0 0 3 0x14200 bored crypto 39544 16100 0 0 3 0x40014200 acpi0 acpi0 12633 305940 0 0 2 0x14200 softnet 99166 63049 0 0 2 0x14200 systqmp 77135 479997 0 0 3 0x14200 bored systq 48693 86252 0 0 3 0x40014200 bored softclock 75211 255908 0 0 3 0x40014200 idle0 98704 100263 0 0 3 0x14200 bored smr 1 466653 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 9637 6663K 14848K 78643K 38441 0 0 pcb 13 11K 12K 78643K 2259 0 0 rtable 120 13K 15K 78643K 4736 0 0 ifaddr 112 28K 30K 78643K 1657 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 540 0 0 iov 0 0K 32K 78643K 2295 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1213 76K 78K 78643K 10829 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 167 0 0 VM map 75 18K 19K 78643K 122 0 0 sem 12 0K 0K 78643K 1899 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 8960 0 0 sigio 0 0K 0K 78643K 210 0 0 proc 45 30K 63K 78643K 3376 0 0 subproc 23 1K 2K 78643K 971 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 1019 0 0 in_multi 37 2K 3K 78643K 1250 0 0 ether_multi 1 0K 0K 78643K 112 0 0 mrt 0 0K 0K 78643K 64 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 108 477K 477K 78643K 108 0 0 exec 0 0K 1K 78643K 2012 0 0 pfkey data 0 0K 4K 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 223 561K 571K 78643K 23801 0 0 UVM aobj 130 9K 9K 78643K 140 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 2129 0 0 NDP 25 0K 1K 78643K 538 0 0 temp 236 3545K 4185K 78643K 322740 0 0 kqueue 0 0K 0K 78643K 189 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 64 252 0 247 1 0 1 1 0 8 0 rtpcb 80 910 0 910 12 11 1 1 0 8 1 rtentry 112 1209 0 1167 2 0 2 2 0 8 0 unpcb 120 5064 0 5053 2 1 1 2 0 8 0 syncache 264 59 0 59 21 20 1 1 0 8 1 tcpqe 32 142 0 142 8 8 0 1 0 8 0 tcpcb 544 4260 0 4256 52 51 1 15 0 8 0 ipq 40 132 0 132 39 38 1 1 0 8 1 ipqe 40 3775 0 3775 39 38 1 1 0 8 1 inpcb 280 22302 0 22298 71 68 3 9 0 8 2 rttmr 72 22 0 21 1 0 1 1 0 8 0 ip6q 72 5 0 5 3 3 0 1 0 8 0 ip6af 40 12 0 12 2 2 0 1 0 8 0 nd6 48 165 0 162 5 4 1 1 0 8 0 pkpcb 40 46 0 46 18 18 0 1 0 8 0 ppxss 1128 220 0 220 33 33 0 1 0 8 0 art_heap8 4096 15 0 13 14 12 2 4 0 8 0 art_heap4 256 4806 0 4522 56 38 18 19 0 8 0 art_table 32 4821 0 4535 7 4 3 3 0 8 0 art_node 16 1207 0 1163 1 0 1 1 0 8 0 sysvmsgpl 40 93 0 70 1 0 1 1 0 8 0 semapl 112 1897 0 1887 1 0 1 1 0 8 0 shmpl 112 138 0 10 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 15302 0 13874 47 0 47 47 0 8 0 ffsino 240 15302 0 13874 85 0 85 85 0 8 0 nchpl 144 30779 0 30321 60 40 20 60 0 8 0 uvmvnodes 72 9289 0 0 169 0 169 169 0 8 0 vnodes 208 9289 0 0 489 0 489 489 0 8 0 namei 1024 107661 0 107661 9 8 1 1 0 8 1 vcpupl 1984 74 0 1 10 0 10 10 0 8 0 vmpool 520 120 0 47 5 0 5 5 0 8 0 scsiplug 64 13 0 13 7 6 1 1 0 8 1 scxspl 192 120745 0 120745 46 45 1 7 0 8 1 plimitpl 152 860 0 854 1 0 1 1 0 8 0 sigapl 432 8965 0 8954 2 0 2 2 0 8 0 futexpl 56 289371 0 289371 9 8 1 1 0 8 1 knotepl 112 2703 0 2684 14 13 1 3 0 8 0 kqueuepl 104 3377 0 3375 7 6 1 4 0 8 0 pipepl 112 6002 0 5984 16 14 2 2 0 8 1 fdescpl 424 8966 0 8954 2 0 2 2 0 8 0 filepl 120 90249 0 90173 60 56 4 11 0 8 1 lockfpl 104 3694 0 3694 6 5 1 1 0 8 1 lockfspl 48 1176 0 1176 6 5 1 1 0 8 1 sessionpl 112 72 0 64 1 0 1 1 0 8 0 pgrppl 48 208 0 200 1 0 1 1 0 8 0 ucredpl 96 10726 0 10719 1 0 1 1 0 8 0 zombiepl 144 8966 0 8965 1 0 1 1 0 8 0 processpl 864 8993 0 8965 4 0 4 4 0 8 0 procpl 632 19985 0 19948 5 1 4 5 0 8 0 sosppl 128 164 0 164 38 37 1 1 0 8 1 sockpl 384 28704 0 28688 89 84 5 14 0 8 1 mcl64k 65536 3883 0 3883 306 305 1 64 0 8 1 mcl16k 16384 118 0 118 33 32 1 1 0 8 1 mcl12k 12288 326 0 326 27 26 1 1 0 8 1 mcl9k 9216 164 0 164 38 37 1 1 0 8 1 mcl8k 8192 495 0 494 20 19 1 1 0 8 0 mcl4k 4096 1134 0 1134 11 10 1 1 0 8 1 mcl2k2 2112 94 0 94 35 34 1 1 0 8 1 mcl2k 2048 86549 0 86504 17 10 7 15 0 8 0 mtagpl 80 1258 0 1242 14 12 2 2 0 8 0 mbufpl 256 261300 0 261166 407 383 24 47 0 8 8 bufpl 256 50894 0 41604 581 0 581 581 0 8 0 anonpl 16 1317245 0 1296068 383 286 97 133 0 62 3 amapchunkpl 152 58414 0 58242 284 268 16 42 0 158 8 amappl16 192 65340 0 64118 536 471 65 82 0 8 3 amappl15 184 1775 0 1775 13 13 0 1 0 8 0 amappl14 176 1967 0 1963 1 0 1 1 0 8 0 amappl13 168 531 0 530 9 8 1 1 0 8 0 amappl12 160 1631 0 1631 8 8 0 1 0 8 0 amappl11 152 1061 0 1057 1 0 1 1 0 8 0 amappl10 144 776 0 774 1 0 1 1 0 8 0 amappl9 136 2049 0 2044 1 0 1 1 0 8 0 amappl8 128 1640 0 1580 3 1 2 3 0 8 0 amappl7 120 1022 0 1014 1 0 1 1 0 8 0 amappl6 112 963 0 947 1 0 1 1 0 8 0 amappl5 104 2323 0 2315 1 0 1 1 0 8 0 amappl4 96 8404 0 8373 1 0 1 1 0 8 0 amappl3 88 2386 0 2377 1 0 1 1 0 8 0 amappl2 80 69365 0 69295 3 1 2 3 0 8 0 amappl1 72 177883 0 177497 28 19 9 20 0 8 0 amappl 80 21298 0 21221 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 139 0 10 3 0 3 3 0 8 0 uaddrrnd 24 9086 0 8954 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9086 0 8954 1 0 1 1 0 8 0 vmmpekpl 168 58068 0 58021 3 0 3 3 0 8 0 vmmpepl 168 1121409 0 1118982 705 554 151 158 0 357 32 vmsppl 272 8965 0 8954 6 5 1 2 0 8 0 pdppl 4096 18178 0 18075 20 6 14 14 0 8 0 pvpl 32 3617389 0 3594114 979 725 254 398 0 265 51 pmappl 200 9085 0 9001 6 1 5 5 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 1622 0 881 24 1 23 23 0 8 0