kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sun Dec 22 08:48:50 PST 2019 OpenBSD/amd64 (ci-openbsd-main-3.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.177' (ECDSA) to the list of known hosts. 2019/12/22 08:48:59 parsed 1 programs 2019/12/22 08:49:06 executed programs: 0 login: uvm_fault(0xfffffd806bc12330, 0x800b, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd806bc12330, 0x800b, 0, 1) -> e in_delmulti(7fff) at in_delmulti+0x8d end trace frame: 0xffff80001d4082b0, count: 0 ddb> trace in_delmulti(7fff) at in_delmulti+0x8d in_purgeaddr(ffff8000009bcc00) at in_purgeaddr+0x156 in_ifdetach(ffff8000009e6800) at in_ifdetach+0x74 if_detach(ffff8000009e6800) at if_detach+0x140 tun_clone_destroy(ffff8000009e6800) at tun_clone_destroy+0x172 ifioctl(fffffd805d8fa788,80206979,ffff80001d408480,ffff8000ffff8770) at ifioctl+0x3de sys_ioctl(ffff8000ffff8770,ffff80001d408598,ffff80001d4085e0) at sys_ioctl+0x5b9 syscall(ffff80001d408660) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe4610, count: -9 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d408260 rbx 0 rdx 0x3 rcx 0x1 rax 0x1 r8 0xffff8000009bcc00 r9 0x5 r10 0x8572f93ac314ee76 r11 0x99d9e73d2a2355fa r12 0 r13 0x3 r14 0x7fff __ALIGN_SIZE+0x6fff r15 0x1 rip 0xffffffff81056cdd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d408200 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=36670 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8280,0xffffffff82591108 process=0xffff80001d392db8 user=0xffff80001d403000, vmspace=0xfffffd806bc12330 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *42802 36670 25114 0 7 0 syz-executor.0 25114 521737 83617 0 3 0x82 nanosleep syz-executor.0 83617 398635 55664 0 3 0x82 thrsleep syz-execprog 83617 188012 55664 0 3 0x4000082 nanosleep syz-execprog 83617 113513 55664 0 3 0x4000082 thrsleep syz-execprog 83617 252221 55664 0 3 0x4000082 thrsleep syz-execprog 83617 434929 55664 0 3 0x4000082 kqread syz-execprog 83617 21272 55664 0 3 0x4000082 thrsleep syz-execprog 83617 42492 55664 0 3 0x4000082 thrsleep syz-execprog 55664 52547 92293 0 3 0x10008a pause ksh 92293 477929 9419 0 3 0x92 select sshd 47865 506884 1 0 3 0x100083 ttyin getty 9419 243263 1 0 3 0x80 select sshd 47023 279865 25103 73 3 0x100090 kqread syslogd 25103 321326 1 0 3 0x100082 netio syslogd 55416 253704 1 77 2 0x100090 dhclient 89699 65417 1 0 3 0x80 poll dhclient 64554 462753 0 0 2 0x14200 zerothread 16847 296220 0 0 3 0x14200 aiodoned aiodoned 26784 283082 0 0 3 0x14200 syncer update 43418 464832 0 0 3 0x14200 cleaner cleaner 5238 269289 0 0 3 0x14200 reaper reaper 28606 206282 0 0 3 0x14200 pgdaemon pagedaemon 40630 230270 0 0 3 0x14200 bored crynlk 50252 392061 0 0 3 0x14200 bored crypto 29446 203459 0 0 3 0x40014200 acpi0 acpi0 8635 362642 0 0 3 0x14200 bored softnet 95244 62737 0 0 2 0x14200 systqmp 22838 155488 0 0 3 0x14200 bored systq 31844 244454 0 0 3 0x40014200 bored softclock 24619 48653 0 0 3 0x40014200 idle0 37205 40435 0 0 3 0x14200 bored smr 1 30129 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 devbuf 9440 6321K 6321K 78643K 10539 0 pcb 13 8K 8K 78643K 13 0 rtable 75 2K 2K 78643K 155 0 ifaddr 32 8K 9K 78643K 33 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1180 74K 74K 78643K 1185 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 3 8K 12K 78643K 18 0 proc 47 38K 54K 78643K 318 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 25 1K 1K 78643K 26 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 18 79K 79K 78643K 18 0 exec 0 0K 1K 78643K 171 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 76 11K 12K 78643K 860 0 UVM aobj 2 2K 2K 78643K 2 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 6 0K 0K 78643K 6 0 temp 27 3013K 3077K 78643K 3057 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 4 0 2 1 0 1 1 0 8 0 rtpcb 80 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 5 1 0 1 1 0 8 0 unpcb 120 27 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 1 0 1 1 0 8 1 tcpcb 544 9 0 5 1 0 1 1 0 8 0 inpcb 280 28 0 20 1 0 1 1 0 8 0 nd6 48 2 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 167 0 0 11 0 11 11 0 8 0 art_table 32 168 0 0 2 0 2 2 0 8 0 art_node 16 33 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1415 0 19 46 0 46 46 0 8 0 ffsino 240 1415 0 19 83 0 83 83 0 8 0 nchpl 144 1640 0 35 60 0 60 60 0 8 0 uvmvnodes 72 1424 0 0 26 0 26 26 0 8 0 vnodes 208 1424 0 0 75 0 75 75 0 8 0 namei 1024 3862 0 3862 1 0 1 1 0 8 1 scxspl 192 3995 0 3995 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 432 197 0 185 2 0 2 2 0 8 0 knotepl 112 39 0 28 1 0 1 1 0 8 0 kqueuepl 104 2 0 0 1 0 1 1 0 8 0 pipepl 128 134 0 121 1 0 1 1 0 8 0 fdescpl 424 198 0 185 2 0 2 2 0 8 0 filepl 120 998 0 943 2 0 2 2 0 8 0 lockfpl 104 5 0 4 1 0 1 1 0 8 0 lockfspl 48 3 0 2 1 0 1 1 0 8 0 sessionpl 112 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 47 0 40 1 0 1 1 0 8 0 zombiepl 144 185 0 185 1 0 1 1 0 8 1 processpl 872 212 0 185 4 0 4 4 0 8 0 procpl 632 218 0 185 3 0 3 3 0 8 0 sockpl 384 72 0 54 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5487 0 5452 8 3 5 8 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9517 0 9433 7 1 6 6 0 8 0 bufpl 280 5845 0 1326 323 0 323 323 0 8 0 anonpl 16 20387 0 18877 15 2 13 13 0 107 6 amapchunkpl 152 725 0 665 5 0 5 5 0 158 2 amappl16 192 70 0 43 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 22 0 18 1 0 1 1 0 8 0 amappl13 168 3 0 1 1 0 1 1 0 8 0 amappl12 160 6 0 4 1 0 1 1 0 8 0 amappl11 152 43 0 32 1 0 1 1 0 8 0 amappl10 144 12 0 11 1 0 1 1 0 8 0 amappl9 136 403 0 398 1 0 1 1 0 8 0 amappl8 128 83 0 73 1 0 1 1 0 8 0 amappl7 120 86 0 77 1 0 1 1 0 8 0 amappl6 112 57 0 53 1 0 1 1 0 8 0 amappl5 104 135 0 125 1 0 1 1 0 8 0 amappl4 96 429 0 404 1 0 1 1 0 8 0 amappl3 88 125 0 117 1 0 1 1 0 8 0 amappl2 80 849 0 788 3 0 3 3 0 8 1 amappl1 72 13385 0 12976 26 8 18 20 0 8 8 amappl 80 418 0 392 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 18 0 17 1 0 1 1 0 8 0 aobjpl 64 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 198 0 185 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 198 0 185 1 0 1 1 0 8 0 vmmpekpl 168 6044 0 6030 1 0 1 1 0 8 0 vmmpepl 168 29551 0 28644 82 4 78 78 0 357 37 vmsppl 272 197 0 185 1 0 1 1 0 8 0 pdppl 4096 402 0 370 5 0 5 5 0 8 0 pvpl 32 103578 0 99785 113 0 113 113 0 265 81 pmappl 200 197 0 185 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 124 0 6 4 0 4 4 0 8 0 ddb>