kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Tue Jul 7 15:21:37 PDT 2020 OpenBSD/amd64 (ci-openbsd-main-6.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.25' (ECDSA) to the list of known hosts. 2020/07/07 15:21:57 parsed 1 programs 2020/07/07 15:22:01 executed programs: 0 login: kernel: protection 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 the kernel did not panic ddb> trace in_delmulti(fffddeffffffffff) at in_delmulti+0x8d in_purgeaddr(ffff8000006b5400) at in_purgeaddr+0x156 in_ifdetach(ffff800000ac3800) at in_ifdetach+0x74 if_detach(ffff800000ac3800) at if_detach+0x140 tun_clone_destroy(ffff800000ac3800) at tun_clone_destroy+0x1d8 ifioctl(fffffd805da72e18,80206979,ffff80001d776fe0,ffff80001d6aa118) at ifioctl+0x3de sys_ioctl(ffff80001d6aa118,ffff80001d7770f8,ffff80001d777140) at sys_ioctl+0x4a1 syscall(ffff80001d7771c0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9c40, count: -9 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d776dc0 rbx 0 rdx 0x3 rcx 0x1 rax 0x1 r8 0xffffffff813262a3 rt_ifa_purge+0x153 r9 0x5 r10 0x7ce5e1a37c8922aa r11 0xaf76242fd1c3d342 r12 0 r13 0x3 r14 0xfffddeffffffffff r15 0x1 rip 0xffffffff819f7b7d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d776d60 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=147732 stat=onproc flags process=0 proc=0 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a99c8,0xffffffff82815730 process=0xffff80001d6c5970 user=0xffff80001d772000, vmspace=0xfffffd806bc09770 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *50968 147732 65134 0 7 0 syz-executor.0 65134 172552 58446 0 3 0x82 nanosleep syz-executor.0 58446 215701 75542 0 3 0x82 thrsleep syz-execprog 58446 376697 75542 0 3 0x4000082 thrsleep syz-execprog 58446 400580 75542 0 3 0x4000082 thrsleep syz-execprog 58446 165289 75542 0 3 0x4000082 thrsleep syz-execprog 58446 58139 75542 0 3 0x4000082 kqread syz-execprog 58446 47013 75542 0 3 0x4000082 thrsleep syz-execprog 58446 277854 75542 0 3 0x4000082 thrsleep syz-execprog 75542 400565 68111 0 3 0x10008a pause ksh 68111 122826 36778 0 3 0x92 select sshd 92335 9761 1 0 3 0x100083 ttyin getty 36778 145166 1 0 3 0x80 select sshd 77458 425741 98113 73 3 0x100090 kqread syslogd 98113 69874 1 0 3 0x100082 netio syslogd 47485 397410 1 77 2 0x100090 dhclient 8629 73628 1 0 3 0x80 poll dhclient 45694 54545 0 0 3 0x14200 bored smr 71162 465672 0 0 3 0x14200 pgzero zerothread 18081 447890 0 0 3 0x14200 aiodoned aiodoned 70657 283590 0 0 3 0x14200 syncer update 25177 270422 0 0 3 0x14200 cleaner cleaner 64280 75508 0 0 3 0x14200 reaper reaper 9124 368920 0 0 3 0x14200 pgdaemon pagedaemon 94565 138321 0 0 3 0x14200 bored crynlk 34174 109196 0 0 3 0x14200 bored crypto 46403 222149 0 0 3 0x40014200 acpi0 acpi0 19774 380021 0 0 3 0x14200 bored softnet 28572 445952 0 0 2 0x14200 systqmp 49034 211316 0 0 3 0x14200 bored systq 52419 436995 0 0 3 0x40014200 bored softclock 77360 447265 0 0 3 0x40014200 idle0 1 400767 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 9442 6321K 6321K 78643K 10543 0 pcb 13 8K 8K 78643K 13 0 rtable 75 2K 2K 78643K 155 0 ifaddr 32 8K 9K 78643K 33 0 counters 20 16K 16K 78643K 20 0 ioctlops 0 0K 2K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1181 74K 74K 78643K 1187 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 1809 195K 288K 78643K 12938 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 19 95K 95K 78643K 19 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 68 11K 12K 78643K 836 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 6 0K 0K 78643K 6 0 temp 23 3845K 3909K 78643K 1623 0 kqueue 3 4K 4K 78643K 3 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 2 1 1 1 0 8 1 tcpqe 32 8 0 8 1 1 0 1 0 8 0 tcpcb 544 9 0 5 1 0 1 1 0 8 0 inpcb 296 28 0 20 1 0 1 1 0 8 0 nd6 48 3 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 144 0 0 9 0 9 9 0 8 0 art_table 32 145 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 dino2pl 256 1415 0 22 88 0 88 88 0 8 0 ffsino 240 1415 0 22 82 0 82 82 0 8 0 nchpl 144 1634 0 36 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 3939 0 3939 1 0 1 1 0 8 1 scxspl 192 4243 0 4243 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 424 212 0 185 4 0 4 4 0 8 0 knotepl 112 47 0 36 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipepl 272 70 0 63 1 0 1 1 0 8 0 fdescpl 432 198 0 185 2 0 2 2 0 8 0 filepl 120 980 0 925 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 57 0 50 1 0 1 1 0 8 0 zombiepl 144 185 0 185 1 0 1 1 0 8 1 processpl 928 212 0 185 4 0 4 4 0 8 0 procpl 624 218 0 185 3 0 3 3 0 8 0 sockpl 400 72 0 54 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5554 0 5517 8 2 6 8 0 8 1 mtagpl 96 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9660 0 9606 8 2 6 6 0 8 2 bufpl 280 2959 0 125 203 0 203 203 0 8 0 anonpl 16 20413 0 18888 14 2 12 12 0 107 3 amapchunkpl 152 748 0 687 4 0 4 4 0 158 1 amappl16 192 126 0 94 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 25 0 22 1 0 1 1 0 8 0 amappl13 168 25 0 20 2 1 1 1 0 8 0 amappl12 160 8 0 6 2 1 1 1 0 8 0 amappl11 152 44 0 35 1 0 1 1 0 8 0 amappl10 144 19 0 15 1 0 1 1 0 8 0 amappl9 136 224 0 222 1 0 1 1 0 8 0 amappl8 128 234 0 228 1 0 1 1 0 8 0 amappl7 120 102 0 91 1 0 1 1 0 8 0 amappl6 112 22 0 17 1 0 1 1 0 8 0 amappl5 104 132 0 123 1 0 1 1 0 8 0 amappl4 96 428 0 405 1 0 1 1 0 8 0 amappl3 88 105 0 100 1 0 1 1 0 8 0 amappl2 80 761 0 706 2 0 2 2 0 8 0 amappl1 72 13483 0 13081 24 7 17 17 0 8 8 amappl 80 421 0 395 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 2 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 6063 0 6042 2 0 2 2 0 8 0 vmmpepl 168 29342 0 28462 81 12 69 69 0 357 30 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 104707 0 100901 102 0 102 102 0 265 68 pmappl 200 197 0 185 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 216 0 6 6 0 6 6 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(fffddeffffffffff) at in_delmulti+0x8d in_purgeaddr(ffff8000006b5400) at in_purgeaddr+0x156 in_ifdetach(ffff800000ac3800) at in_ifdetach+0x74 if_detach(ffff800000ac3800) at if_detach+0x140 tun_clone_destroy(ffff800000ac3800) at tun_clone_destroy+0x1d8 ifioctl(fffffd805da72e18,80206979,ffff80001d776fe0,ffff80001d6aa118) at ifioctl+0x3de sys_ioctl(ffff80001d6aa118,ffff80001d7770f8,ffff80001d777140) at sys_ioctl+0x4a1 syscall(ffff80001d7771c0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9c40, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(fffddeffffffffff) at in_delmulti+0x8d in_purgeaddr(ffff8000006b5400) at in_purgeaddr+0x156 in_ifdetach(ffff800000ac3800) at in_ifdetach+0x74 if_detach(ffff800000ac3800) at if_detach+0x140 tun_clone_destroy(ffff800000ac3800) at tun_clone_destroy+0x1d8 ifioctl(fffffd805da72e18,80206979,ffff80001d776fe0,ffff80001d6aa118) at ifioctl+0x3de sys_ioctl(ffff80001d6aa118,ffff80001d7770f8,ffff80001d777140) at sys_ioctl+0x4a1 syscall(ffff80001d7771c0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9c40, count: -9 ddb>