uvm_fault(0xfffffd803f013dd0, 0xa0a2928737c, 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(0xfffffd803f013dd0, 0xa0a2928737c, 0, 1) -> e in6_purgeaddr(ffff800000acfa00) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 end trace frame: 0xffff800015d85660, count: 0 ddb> trace in6_purgeaddr(ffff800000acfa00) at in6_purgeaddr+0x135 sys/netinet6/in6.c:914 in6_ifdetach(ffff800000a99000) at in6_ifdetach+0x74 sys/netinet6/in6_ifattach.c:422 if_detach(ffff800000a99000) at if_detach+0x155 sys/net/if.c:1110 tun_clone_destroy(ffff800000a99000) at tun_clone_destroy+0x1c0 sys/net/if_tun.c:278 spec_close(ffff800015d85790) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd803e9fd9c0,7,fffffd803f7c6780,ffff8000ffff3650) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd802d6adbc8,ffff8000ffff3650) at vn_closefile+0xd3 vn_close sys/kern/vfs_vnops.c:301 [inline] vn_closefile(fffffd802d6adbc8,ffff8000ffff3650) at vn_closefile+0xd3 sys/kern/vfs_vnops.c:613 fdrop(fffffd802d6adbc8,ffff8000ffff3650) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd802d6adbc8,ffff8000ffff3650) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff8000ffff3650) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff8000ffff3650,19,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff8000ffff3650,19) at postsig+0x4a6 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff8000ffff3650,19) at postsig+0x4a6 sys/kern/kern_sig.c:1431 userret(ffff8000ffff3650) at userret+0x159 sys/kern/kern_sig.c:1889 syscall(ffff800015d85c10) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:115 [inline] syscall(ffff800015d85c10) at syscall+0x42e sys/arch/amd64/amd64/trap.c:577 Xsyscall(6,0,7f7fffff37f0,57,0,7f7fffff3814) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff3860, count: -15 ddb> show registers rdi 0 rsi 0 rbp 0xffff800015d855f0 rbx 0xffff800000b83200 rdx 0 rcx 0xfffffd802f2c9d00 rax 0 r8 0xffff800000a99000 r9 0x1 r10 0xc3d522b42da4d44 r11 0x4dd6b8efc267c264 r12 0xa0a29287374 r13 0 r14 0xffff800000acfa00 r15 0xffff800000a99000 rip 0xffffffff82014ef5 in6_purgeaddr+0x135 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800015d85580 ss 0x10 in6_purgeaddr+0x135: movq 0x8(%r12),%r13 ddb> show proc PROC (syz-executor.1) pid=281677 stat=onproc flags process=a proc=2000 pri=17, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff89e8,0xffff8000ffff2a08 process=0xffff8000ffff6a30 user=0xffff800015d80000, vmspace=0xfffffd803f013dd0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=2, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 23921 266985 1 0 3 0x100083 ttyin getty 70209 441927 36088 0 3 0x82 nanosleep syz-executor.0 70166 220015 0 0 3 0x14200 acct acct 40513 33472 0 0 3 0x14200 bored sosplice 36088 183357 28044 0 3 0x82 thrsleep syz-fuzzer 36088 470742 28044 0 3 0x4000082 nanosleep syz-fuzzer 36088 461377 28044 0 3 0x4000082 thrsleep syz-fuzzer 36088 338484 28044 0 3 0x4000082 thrsleep syz-fuzzer 36088 242149 28044 0 2 0x4000082 syz-fuzzer 36088 346561 28044 0 3 0x4000082 thrsleep syz-fuzzer 36088 452282 28044 0 3 0x4000082 thrsleep syz-fuzzer 36088 58000 28044 0 3 0x4000082 thrsleep syz-fuzzer 36088 147404 28044 0 3 0x4000082 thrsleep syz-fuzzer 28044 157999 29214 0 3 0x10008a pause ksh 29214 247093 44415 0 3 0x92 select sshd 44415 25816 1 0 3 0x80 select sshd 62409 96722 83269 73 3 0x100090 kqread syslogd 83269 251015 1 0 3 0x100082 netio syslogd 86266 224746 1 77 2 0x100090 dhclient 90779 357363 1 0 3 0x80 poll dhclient 64085 509097 0 0 2 0x14200 zerothread 37852 186037 0 0 3 0x14200 aiodoned aiodoned 3637 72124 0 0 3 0x14200 syncer update 89339 486743 0 0 3 0x14200 cleaner cleaner 89463 302938 0 0 3 0x14200 reaper reaper 79671 261929 0 0 3 0x14200 pgdaemon pagedaemon 42080 419913 0 0 3 0x14200 bored crynlk 60935 378829 0 0 3 0x14200 bored crypto 22528 441576 0 0 3 0x40014200 acpi0 acpi0 42903 183798 0 0 2 0x14200 softnet 54118 469588 0 0 3 0x14200 bored systqmp 43318 226087 0 0 3 0x14200 bored systq 37540 30395 0 0 3 0x40014200 bored softclock 81201 78614 0 0 3 0x40014200 idle0 35972 16373 0 0 3 0x14200 bored smr 1 382511 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 9584 6734K 8601K 78643K 22095 0 0 pcb 13 10K 12K 78643K 466 0 0 rtable 107 8K 8K 78643K 1131 0 0 ifaddr 71 16K 17K 78643K 290 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 326 0 0 iov 0 0K 32K 78643K 502 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1230 77K 78K 78643K 4458 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 32 8K 8K 78643K 39 0 0 sem 12 1K 1K 78643K 298 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 4 9K 25K 78643K 2306 0 0 sigio 0 0K 0K 78643K 47 0 0 proc 49 38K 63K 78643K 1128 0 0 subproc 23 1K 2K 78643K 238 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 182 0 0 in_multi 21 1K 2K 78643K 252 0 0 ether_multi 1 0K 0K 78643K 21 0 0 mrt 1 0K 0K 78643K 17 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 538 0 0 pfkey data 0 0K 0K 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 152 234K 235K 78643K 7255 0 0 UVM aobj 130 4K 4K 78643K 130 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 403 0 0 NDP 16 0K 1K 78643K 98 0 0 temp 198 3544K 4181K 78643K 81895 0 0 kqueue 0 0K 0K 78643K 15 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 36 0 32 1 0 1 1 0 8 0 rtpcb 80 183 0 181 1 0 1 1 0 8 0 rtentry 112 218 0 179 2 0 2 2 0 8 0 unpcb 120 1169 0 1159 2 1 1 2 0 8 0 syncache 264 20 0 20 7 7 0 1 0 8 0 tcpqe 32 30 0 30 3 3 0 1 0 8 0 tcpcb 544 951 0 947 16 15 1 15 0 8 0 ipq 40 89 0 89 6 5 1 1 0 8 1 ipqe 40 956 0 956 6 5 1 1 0 8 1 inpcb 280 3713 0 3706 14 12 2 9 0 8 1 rttmr 72 5 0 4 2 1 1 1 0 8 0 nd6 48 36 0 34 1 0 1 1 0 8 0 pkpcb 40 10 0 10 4 4 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 19 0 19 6 5 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 969 0 756 23 7 16 16 0 8 1 art_table 32 971 0 756 2 0 2 2 0 8 0 art_node 16 216 0 181 1 0 1 1 0 8 0 sysvmsgpl 40 29 0 11 1 0 1 1 0 8 0 semapl 112 296 0 286 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 5856 0 4462 46 0 46 46 0 8 0 ffsino 240 5856 0 4462 83 0 83 83 0 8 0 nchpl 144 9877 0 9400 60 40 20 60 0 8 0 uvmvnodes 72 6765 0 0 123 0 123 123 0 8 0 vnodes 208 6765 0 0 357 0 357 357 0 8 0 namei 1024 34067 0 34067 3 2 1 1 0 8 1 vcpupl 1984 31 0 1 4 0 4 4 0 8 0 vmpool 520 37 0 7 2 0 2 2 0 8 0 scsiplug 64 3 0 3 1 1 0 1 0 8 0 scxspl 192 39739 0 39739 16 15 1 7 0 8 1 plimitpl 152 217 0 210 1 0 1 1 0 8 0 sigapl 432 2441 0 2429 2 0 2 2 0 8 0 futexpl 56 71468 0 71468 3 2 1 1 0 8 1 knotepl 112 1272 0 1253 1 0 1 1 0 8 0 kqueuepl 104 1245 0 1243 4 3 1 4 0 8 0 pipepl 112 1374 0 1356 5 4 1 2 0 8 0 fdescpl 424 2442 0 2429 2 0 2 2 0 8 0 filepl 120 24276 0 24191 23 18 5 11 0 8 2 lockfpl 104 2031 0 2030 1 0 1 1 0 8 0 lockfspl 48 488 0 487 1 0 1 1 0 8 0 sessionpl 112 30 0 20 1 0 1 1 0 8 0 pgrppl 48 54 0 44 1 0 1 1 0 8 0 ucredpl 96 2326 0 2319 1 0 1 1 0 8 0 zombiepl 144 2431 0 2429 1 0 1 1 0 8 0 processpl 864 2459 0 2429 4 0 4 4 0 8 0 procpl 632 5490 0 5452 7 3 4 5 0 8 0 sosppl 128 162 0 162 6 5 1 1 0 8 1 sockpl 384 5133 0 5114 26 22 4 14 0 8 1 mcl64k 65536 250 0 250 5 4 1 1 0 8 1 mcl16k 16384 58 0 58 7 6 1 1 0 8 1 mcl12k 12288 494 0 494 3 2 1 1 0 8 1 mcl9k 9216 40 0 40 9 8 1 1 0 8 1 mcl8k 8192 171 0 171 5 4 1 1 0 8 1 mcl4k 4096 266 0 266 4 3 1 1 0 8 1 mcl2k2 2112 16 0 16 8 7 1 1 0 8 1 mcl2k 2048 74821 0 74764 17 8 9 12 0 8 0 mtagpl 80 78 0 78 3 2 1 1 0 8 1 mbufpl 256 146320 0 146252 74 62 12 23 0 8 2 bufpl 256 17566 0 10797 424 0 424 424 0 8 0 anonpl 16 339830 0 318147 146 49 97 102 0 62 6 amapchunkpl 152 12781 0 12617 31 22 9 17 0 158 0 amappl16 192 16091 0 14896 147 81 66 71 0 8 3 amappl15 184 557 0 556 1 0 1 1 0 8 0 amappl14 176 270 0 263 1 0 1 1 0 8 0 amappl13 168 248 0 248 2 2 0 1 0 8 0 amappl12 160 208 0 208 3 3 0 1 0 8 0 amappl11 152 514 0 501 1 0 1 1 0 8 0 amappl10 144 288 0 286 1 0 1 1 0 8 0 amappl9 136 1027 0 1023 1 0 1 1 0 8 0 amappl8 128 633 0 588 2 0 2 2 0 8 0 amappl7 120 355 0 349 1 0 1 1 0 8 0 amappl6 112 479 0 470 1 0 1 1 0 8 0 amappl5 104 460 0 450 1 0 1 1 0 8 0 amappl4 96 2942 0 2914 1 0 1 1 0 8 0 amappl3 88 786 0 777 1 0 1 1 0 8 0 amappl2 80 18305 0 18240 3 1 2 3 0 8 0 amappl1 72 55964 0 55570 25 16 9 20 0 8 0 amappl 80 5938 0 5881 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 64 129 0 0 3 0 3 3 0 8 0 uaddrrnd 24 2479 0 2429 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2479 0 2429 1 0 1 1 0 8 0 vmmpekpl 168 19277 0 19246 2 0 2 2 0 8 0 vmmpepl 168 308752 0 306439 246 129 117 172 0 357 5 vmsppl 272 2441 0 2429 4 3 1 2 0 8 0 pdppl 4096 4964 0 4902 12 3 9 9 0 8 0 pvpl 32 890457 0 867744 403 133 270 324 0 265 83 pmappl 200 2478 0 2436 3 0 3 3 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 684 0 119 17 0 17 17 0 8 0