login: uvm_fault(0xfffffd803f013110, 0x9, 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(0xfffffd803f013110, 0x9, 0, 1) -> e in6_purgeaddr(ffff800000a77600) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 end trace frame: 0xffff80001595b7c0, count: 0 ddb> trace in6_purgeaddr(ffff800000a77600) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 in6_ifdetach(ffff800000a6f800) at in6_ifdetach+0x74 sys/netinet6/in6_ifattach.c:422 if_detach(ffff800000a6f800) at if_detach+0x155 sys/net/if.c:1110 tun_clone_destroy(ffff800000a6f800) at tun_clone_destroy+0x1c0 sys/net/if_tun.c:278 spec_close(ffff80001595b8f0) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd803e908a90,7,fffffd803f7c6a20,ffff80001592e9f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd8037561168,ffff80001592e9f8) at vn_closefile+0xd3 vn_close sys/kern/vfs_vnops.c:301 [inline] vn_closefile(fffffd8037561168,ffff80001592e9f8) at vn_closefile+0xd3 sys/kern/vfs_vnops.c:613 fdrop(fffffd8037561168,ffff80001592e9f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd8037561168,ffff80001592e9f8) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff80001592e9f8) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff80001592e9f8,19,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff80001592e9f8,19) at postsig+0x4a6 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff80001592e9f8,19) at postsig+0x4a6 sys/kern/kern_sig.c:1431 userret(ffff80001592e9f8) at userret+0x159 sys/kern/kern_sig.c:1889 Xsyscall(6,3,7f7ffffedfb0,5,0,d6dd8c69000) at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffedab0, count: -14 ddb> show registers rdi 0x1 rsi 0x1 rbp 0xffff80001595b750 rbx 0xffff800000a8b300 rdx 0 rcx 0xfffffd802daffb00 rax 0 r8 0xffff800000a6f800 r9 0x1 r10 0xb3dd11e15cfb0913 r11 0x6f84dfbf931d62c7 r12 0x1 r13 0 r14 0xffff800000a77600 r15 0xffff800000a6f800 rip 0xffffffff82014ef5 in6_purgeaddr+0x135 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80001595b6e0 ss 0x10 in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb> show proc PROC (syz-executor.1) pid=248496 stat=onproc flags process=a proc=2000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8770,0xffff80001592f170 process=0xffff8000148a37b8 user=0xffff800015956000, vmspace=0xfffffd803f013110 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 36384 254901 28889 0 3 0x80 nanosleep syz-executor.0 36384 250134 28889 0 3 0x4000080 netio syz-executor.0 36384 76206 28889 0 3 0x4000080 fsleep syz-executor.0 97339 292393 1 0 3 0x100083 ttyin getty 28889 351038 63599 0 3 0x82 nanosleep syz-executor.0 63599 194241 99796 0 3 0x82 thrsleep syz-fuzzer 63599 318200 99796 0 3 0x4000082 nanosleep syz-fuzzer 63599 47420 99796 0 3 0x4000082 thrsleep syz-fuzzer 63599 416326 99796 0 3 0x4000082 thrsleep syz-fuzzer 63599 207993 99796 0 2 0x4000082 syz-fuzzer 63599 93498 99796 0 3 0x4000082 thrsleep syz-fuzzer 63599 134761 99796 0 3 0x4000082 thrsleep syz-fuzzer 63599 288301 99796 0 3 0x4000082 thrsleep syz-fuzzer 63599 381229 99796 0 3 0x4000082 thrsleep syz-fuzzer 99796 112941 24649 0 3 0x10008a pause ksh 24649 310030 54741 0 3 0x92 select sshd 54741 294716 1 0 3 0x80 select sshd 91199 107366 23472 73 3 0x100090 kqread syslogd 23472 391154 1 0 3 0x100082 netio syslogd 26403 356593 1 77 2 0x100090 dhclient 97426 38707 1 0 3 0x80 poll dhclient 40862 185698 0 0 2 0x14200 zerothread 98588 78866 0 0 3 0x14200 aiodoned aiodoned 56262 402989 0 0 3 0x14200 syncer update 77039 99938 0 0 3 0x14200 cleaner cleaner 13264 405451 0 0 3 0x14200 reaper reaper 91869 518262 0 0 3 0x14200 pgdaemon pagedaemon 75877 407111 0 0 3 0x14200 bored crynlk 44441 260082 0 0 3 0x14200 bored crypto 9561 29842 0 0 3 0x40014200 acpi0 acpi0 36821 127276 0 0 2 0x14200 softnet 63039 262582 0 0 2 0x14200 systqmp 83640 364209 0 0 3 0x14200 bored systq 37669 374602 0 0 3 0x40014200 bored softclock 59925 501504 0 0 3 0x40014200 idle0 28746 416439 0 0 3 0x14200 bored smr 1 211673 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 9467 6322K 6832K 78643K 10872 0 0 pcb 13 8K 8K 78643K 67 0 0 rtable 94 3K 4K 78643K 294 0 0 ifaddr 44 11K 12K 78643K 78 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 29 0 0 iov 0 0K 16K 78643K 25 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1214 76K 77K 78643K 1323 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 4 0 0 VM map 4 1K 1K 78643K 4 0 0 sem 11 1K 1K 78643K 11 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 164 0 0 sigio 0 0K 0K 78643K 2 0 0 proc 48 38K 63K 78643K 383 0 0 subproc 23 1K 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 216 0 0 in_multi 25 1K 2K 78643K 76 0 0 ether_multi 1 0K 0K 78643K 3 0 0 mrt 0 0K 0K 78643K 6 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 48 212K 212K 78643K 48 0 0 exec 0 0K 1K 78643K 190 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 108 38K 38K 78643K 1259 0 0 UVM aobj 6 2K 2K 78643K 8 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 37 0 0 NDP 8 0K 0K 78643K 21 0 0 temp 143 3538K 3605K 78643K 4777 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 8 0 4 1 0 1 1 0 8 0 rtpcb 80 33 0 31 1 0 1 1 0 8 0 rtentry 112 62 0 25 2 0 2 2 0 8 0 unpcb 120 113 0 103 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 161 0 161 1 1 0 1 0 8 0 tcpcb 544 157 0 147 2 0 2 2 0 8 1 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 280 295 0 282 2 0 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 9 0 6 1 0 1 1 0 8 0 ppxss 1128 7 0 7 2 1 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 319 0 91 15 0 15 15 0 8 0 art_table 32 320 0 91 2 0 2 2 0 8 0 art_node 16 61 0 25 1 0 1 1 0 8 0 sysvmsgpl 40 74 0 34 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 6 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1617 0 220 46 0 46 46 0 8 0 ffsino 240 1617 0 220 83 0 83 83 0 8 0 nchpl 144 2028 0 1598 60 0 60 60 0 8 40 uvmvnodes 72 1735 0 0 32 0 32 32 0 8 0 vnodes 208 1735 0 0 92 0 92 92 0 8 0 namei 1024 5150 0 5150 1 0 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 520 2 0 0 1 0 1 1 0 8 0 scxspl 192 5698 0 5698 8 6 2 7 0 8 2 plimitpl 152 24 0 17 1 0 1 1 0 8 0 sigapl 432 335 0 322 2 0 2 2 0 8 0 futexpl 56 4130 0 4129 1 0 1 1 0 8 0 knotepl 112 69 0 50 1 0 1 1 0 8 0 kqueuepl 104 50 0 48 1 0 1 1 0 8 0 pipepl 112 374 0 354 1 0 1 1 0 8 0 fdescpl 424 336 0 322 2 0 2 2 0 8 0 filepl 120 2210 0 2114 4 0 4 4 0 8 0 lockfpl 104 33 0 31 1 0 1 1 0 8 0 lockfspl 48 14 0 12 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 20 0 10 1 0 1 1 0 8 0 ucredpl 96 149 0 142 1 0 1 1 0 8 0 zombiepl 144 323 0 322 1 0 1 1 0 8 0 processpl 864 350 0 322 4 0 4 4 0 8 0 procpl 632 560 0 522 6 1 5 5 0 8 1 sockpl 384 443 0 418 4 0 4 4 0 8 1 mcl64k 65536 261 0 261 33 0 33 33 0 8 33 mcl12k 12288 3 0 3 2 1 1 1 0 8 1 mcl9k 9216 2 0 2 1 1 0 1 0 8 0 mcl8k 8192 6 0 6 2 1 1 1 0 8 1 mcl4k 4096 27 0 27 2 1 1 1 0 8 1 mcl2k 2048 67545 0 67498 21 12 9 17 0 8 2 mtagpl 80 4 0 2 2 1 1 1 0 8 0 mbufpl 256 108786 0 108677 26 6 20 25 0 8 8 bufpl 256 6394 0 1545 304 0 304 304 0 8 0 anonpl 16 52942 0 33342 97 1 96 96 0 62 16 amapchunkpl 152 1527 0 1376 9 2 7 9 0 158 0 amappl16 192 2029 0 938 67 4 63 67 0 8 8 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 112 0 105 1 0 1 1 0 8 0 amappl13 168 1 0 0 1 0 1 1 0 8 0 amappl12 160 6 0 6 1 1 0 1 0 8 0 amappl11 152 124 0 111 1 0 1 1 0 8 0 amappl10 144 14 0 12 1 0 1 1 0 8 0 amappl9 136 567 0 564 1 0 1 1 0 8 0 amappl8 128 149 0 124 1 0 1 1 0 8 0 amappl7 120 35 0 31 1 0 1 1 0 8 0 amappl6 112 118 0 109 1 0 1 1 0 8 0 amappl5 104 128 0 118 1 0 1 1 0 8 0 amappl4 96 487 0 460 1 0 1 1 0 8 0 amappl3 88 249 0 239 1 0 1 1 0 8 0 amappl2 80 1907 0 1839 3 1 2 3 0 8 0 amappl1 72 15558 0 15139 26 16 10 20 0 8 0 amappl 80 796 0 751 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 7 0 2 1 0 1 1 0 8 0 uaddrrnd 24 338 0 322 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 338 0 322 1 0 1 1 0 8 0 vmmpekpl 168 6994 0 6965 2 0 2 2 0 8 0 vmmpepl 168 47968 0 45801 142 11 131 136 0 357 31 vmsppl 272 335 0 322 2 1 1 2 0 8 0 pdppl 4096 682 0 646 6 1 5 6 0 8 0 pvpl 32 161675 0 139028 225 0 225 225 0 265 40 pmappl 200 337 0 322 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 503 0 24 14 0 14 14 0 8 0