uvm_fault(0xfffffd807f00a000, 0x36e2348, 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(0xfffffd807f00a000, 0x36e2348, 0, 1) -> e in6_purgeaddr(ffff800000a48100) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 end trace frame: 0xffff800022383350, count: 0 ddb{1}> trace in6_purgeaddr(ffff800000a48100) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 in6_ifdetach(ffff800000a98000) at in6_ifdetach+0x74 sys/netinet6/in6_ifattach.c:422 if_detach(ffff800000a98000) at if_detach+0x148 sys/net/if.c:1157 tun_clone_destroy(ffff800000a98000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:278 spec_close(ffff800022383480) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd807cf8b758,7,fffffd807f7c6660,ffff800020abe018) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd806c9deb60,ffff800020abe018) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:301 [inline] vn_closefile(fffffd806c9deb60,ffff800020abe018) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:613 fdrop(fffffd806c9deb60,ffff800020abe018) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd806c9deb60,ffff800020abe018) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020abe018) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020abe018,19,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff800020abe018,19) at postsig+0x4e3 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff800020abe018,19) at postsig+0x4e3 sys/kern/kern_sig.c:1431 userret(ffff800020abe018) at userret+0x199 sys/kern/kern_sig.c:1889 Xsyscall(6,0,7f7ffffd9c30,89,4c7c0206e00,7f7ffffda0f0) at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffda0e0, count: -14 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000223832e0 rbx 0 rdx 0x73 rcx 0x74 rax 0 r8 0xffffffff81c09334 rt_ifa_dellocal+0x44 r9 0x1 r10 0x18 r11 0xcf399fdd8a12fa7c r12 0x36e2340 __kernel_end_phys+0xee2340 r13 0 r14 0xffff800000a48100 r15 0xffff800000a98000 rip 0xffffffff816df045 in6_purgeaddr+0x135 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800022383270 ss 0x10 in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb{1}> show proc PROC (syz-executor.1) pid=91916 stat=onproc flags process=a proc=2000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020abf3d8,0xffff800020abec80 process=0xffff800020adce00 user=0xffff80002237e000, vmspace=0xfffffd807f00a000 estcpu=36, cpticks=2, pctcpu=0.4 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 90682 165097 1 0 3 0x100083 ttyin getty 17280 256733 41805 0 3 0x82 nanosleep syz-executor.0 13551 491925 0 0 3 0x14200 acct acct 41126 244971 0 0 3 0x14200 bored sosplice 41805 489892 87744 0 3 0x82 thrsleep syz-fuzzer 41805 23915 87744 0 3 0x4000082 nanosleep syz-fuzzer 41805 470853 87744 0 3 0x4000082 thrsleep syz-fuzzer 41805 482099 87744 0 3 0x4000082 thrsleep syz-fuzzer 41805 279758 87744 0 3 0x4000082 thrsleep syz-fuzzer 41805 59164 87744 0 3 0x4000082 thrsleep syz-fuzzer 41805 417236 87744 0 3 0x4000082 nanosleep syz-fuzzer 41805 125307 87744 0 3 0x4000082 thrsleep syz-fuzzer 41805 335636 87744 0 3 0x4000082 thrsleep syz-fuzzer 41805 499458 87744 0 2 0x4000082 syz-fuzzer 87744 76468 91327 0 3 0x10008a pause ksh 91327 240641 62851 0 7 0x12 sshd 62851 146327 1 0 3 0x80 select sshd 76777 356844 97722 74 3 0x100092 bpf pflogd 97722 358767 1 0 3 0x80 netio pflogd 89737 224805 68554 73 3 0x100090 kqread syslogd 68554 495261 1 0 3 0x100082 netio syslogd 45379 291904 1 77 2 0x100090 dhclient 4060 39196 1 0 3 0x80 poll dhclient 11575 236086 0 0 2 0x14200 zerothread 59099 293442 0 0 3 0x14200 aiodoned aiodoned 1680 80703 0 0 3 0x14200 syncer update 14822 285647 0 0 3 0x14200 cleaner cleaner 9860 195694 0 0 3 0x14200 reaper reaper 16687 425616 0 0 3 0x14200 pgdaemon pagedaemon 86183 247467 0 0 3 0x14200 bored crynlk 57943 445807 0 0 3 0x14200 bored crypto 25632 280303 0 0 3 0x40014200 acpi0 acpi0 91469 277689 0 0 3 0x40014200 idle1 91876 180962 0 0 2 0x14200 softnet 56443 432231 0 0 2 0x14200 systqmp 32773 47075 0 0 3 0x14200 bored systq 54111 162677 0 0 3 0x40014200 bored softclock 79640 41479 0 0 3 0x40014200 idle0 98289 322198 0 0 3 0x14200 bored smr 1 89631 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 9517 6415K 8457K 78643K 17391 0 0 pcb 13 8K 8K 78643K 527 0 0 rtable 102 12K 14K 78643K 1326 0 0 ifaddr 63 15K 15K 78643K 429 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1503 0 0 iov 0 0K 24K 78643K 243 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1224 77K 78K 78643K 3333 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 128 0 0 VM map 7 3K 3K 78643K 7 0 0 sem 12 0K 1K 78643K 764 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 4 9K 25K 78643K 2947 0 0 sigio 0 0K 1K 78643K 65 0 0 proc 60 63K 95K 78643K 711 0 0 subproc 23 1K 2K 78643K 68 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 353 0 0 in_multi 23 1K 2K 78643K 193 0 0 ether_multi 1 0K 0K 78643K 26 0 0 mrt 6 0K 0K 78643K 138 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 78 344K 344K 78643K 78 0 0 exec 0 0K 1K 78643K 508 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 125 87K 105K 78643K 8125 0 0 UVM aobj 130 8K 8K 78643K 171 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 378 0 0 NDP 13 0K 0K 78643K 128 0 0 temp 155 3559K 3643K 78643K 40201 0 0 kqueue 0 0K 0K 78643K 11 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 12 0 7 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 252 0 250 1 0 1 1 0 8 0 rtentry 112 141 0 103 2 0 2 2 0 8 0 unpcb 120 1340 0 1306 9 7 2 4 0 8 0 syncache 264 47 0 47 4 4 0 1 0 8 0 tcpqe 32 24 0 24 2 2 0 1 0 8 0 tcpcb 544 1227 0 1223 4 3 1 2 0 8 0 inpcb 280 3965 0 3958 12 10 2 4 0 8 1 rttmr 72 59 0 59 5 5 0 1 0 8 0 ip6q 72 1 0 0 1 0 1 1 0 8 0 nd6 48 19 0 16 1 0 1 1 0 8 0 pkpcb 40 20 0 20 2 2 0 1 0 8 0 ppxss 1128 52 0 50 1 0 1 1 0 8 0 pffrag 232 17 0 17 2 2 0 1 0 482 0 pffrnode 88 17 0 17 2 2 0 1 0 8 0 pffrent 40 335 0 335 2 2 0 1 0 8 0 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 49 0 36 1 0 1 1 0 8 0 pfstkey 112 49 0 36 1 0 1 1 0 8 0 pfstate 328 49 0 36 2 0 2 2 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 548 0 319 17 2 15 15 0 8 0 art_table 32 549 0 319 2 0 2 2 0 8 0 art_node 16 140 0 102 1 0 1 1 0 8 0 sysvmsgpl 40 66 0 29 1 0 1 1 0 8 0 semapl 112 762 0 752 1 0 1 1 0 8 0 shmpl 112 169 0 41 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 6208 0 4787 48 2 46 47 0 8 0 ffsino 272 6208 0 4787 96 0 96 96 0 8 0 nchpl 144 10606 0 9007 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 31251 0 31251 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 552 5 0 0 1 0 1 1 0 8 0 scxspl 192 30084 0 30084 10 9 1 7 0 8 1 plimitpl 152 239 0 231 1 0 1 1 0 8 0 sigapl 432 3141 0 3127 3 1 2 3 0 8 0 futexpl 56 53158 0 53158 1 0 1 1 0 8 1 knotepl 112 698 0 679 2 1 1 2 0 8 0 kqueuepl 104 843 0 841 2 1 1 2 0 8 0 pipepl 112 746 0 728 2 1 1 1 0 8 0 fdescpl 488 3142 0 3127 3 0 3 3 0 8 0 filepl 152 19467 0 19377 12 7 5 8 0 8 0 lockfpl 104 768 0 767 1 0 1 1 0 8 0 lockfspl 48 296 0 295 1 0 1 1 0 8 0 sessionpl 112 22 0 11 1 0 1 1 0 8 0 pgrppl 48 55 0 44 1 0 1 1 0 8 0 ucredpl 96 3728 0 3719 1 0 1 1 0 8 0 zombiepl 144 3136 0 3134 2 1 1 1 0 8 0 processpl 896 3167 0 3134 4 0 4 4 0 8 0 procpl 632 7090 0 7048 12 7 5 5 0 8 1 srpgc 64 6 0 4 2 1 1 1 0 8 0 sosppl 128 393 0 393 3 3 0 1 0 8 0 sockpl 384 5677 0 5634 20 14 6 12 0 8 1 mcl64k 65536 25 0 0 4 1 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 14 0 0 1 0 1 1 0 8 0 mcl8k 8192 33 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 217 0 0 14 1 13 14 0 8 0 mtagpl 80 395 0 0 8 0 8 8 0 8 0 mbufpl 256 994 0 0 57 0 57 57 0 8 0 bufpl 256 11857 0 4799 442 0 442 442 0 8 0 anonpl 16 289932 0 284907 84 47 37 45 0 124 13 amapchunkpl 152 13534 0 13440 19 6 13 14 0 158 7 amappl16 192 16815 0 16598 59 46 13 34 0 8 0 amappl15 184 1435 0 1434 1 0 1 1 0 8 0 amappl14 176 66 0 59 1 0 1 1 0 8 0 amappl13 168 1 0 1 1 1 0 1 0 8 0 amappl12 160 22 0 19 2 1 1 1 0 8 0 amappl11 152 63 0 48 1 0 1 1 0 8 0 amappl10 144 784 0 776 1 0 1 1 0 8 0 amappl9 136 629 0 626 1 0 1 1 0 8 0 amappl8 128 212 0 171 3 1 2 2 0 8 0 amappl7 120 817 0 810 1 0 1 1 0 8 0 amappl6 112 66 0 58 1 0 1 1 0 8 0 amappl5 104 148 0 134 1 0 1 1 0 8 0 amappl4 96 3455 0 3422 1 0 1 1 0 8 0 amappl3 88 210 0 203 1 0 1 1 0 8 0 amappl2 80 25922 0 25859 4 2 2 3 0 8 0 amappl1 72 65242 0 64825 26 16 10 20 0 8 0 amappl 80 7388 0 7348 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 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 64 170 0 41 3 0 3 3 0 8 0 uaddrrnd 24 3147 0 3127 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3147 0 3127 1 0 1 1 0 8 0 vmmpekpl 168 21680 0 21644 2 0 2 2 0 8 0 vmmpepl 168 364861 0 363600 132 65 67 83 0 357 0 vmsppl 368 3141 0 3127 2 0 2 2 0 8 0 pdppl 4096 6301 0 6259 6 0 6 6 0 8 0 pvpl 32 1038623 0 1030399 211 102 109 121 0 265 35 pmappl 232 3146 0 3127 4 2 2 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 660 0 10 19 0 19 19 0 8 0