kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Tue Jan 21 13:45:16 PST 2020 OpenBSD/amd64 (ci-openbsd-main-8.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.109' (ECDSA) to the list of known hosts. 2020/01/21 13:45:31 parsed 1 programs 2020/01/21 13:45:38 executed programs: 0 login: panic: receive 1a: so 0xfffffd805e4db000, so_type 3, m 0xfffffd805c6a5f00, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *109369 76438 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff8219b2ef) at panic+0x15c soreceive(fffffd805e4db000,0,ffff80001d37e658,0,0,ffff80001d37e564) at soreceive+0x170a soo_read(fffffd80677fe1e0,ffff80001d37e658,0) at soo_read+0x53 dofilereadv(ffff8000ffff84f8,6,ffff80001d37e658,0,ffff80001d37e740) at dofilereadv+0x1a2 sys_read(ffff8000ffff84f8,ffff80001d37e6f0,ffff80001d37e740) at sys_read+0x83 syscall(ffff80001d37e7c0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9640, count: 7 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic receive 1a: so 0xfffffd805e4db000, so_type 3, m 0xfffffd805c6a5f00, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff8219b2ef) at panic+0x15c soreceive(fffffd805e4db000,0,ffff80001d37e658,0,0,ffff80001d37e564) at soreceive+0x170a soo_read(fffffd80677fe1e0,ffff80001d37e658,0) at soo_read+0x53 dofilereadv(ffff8000ffff84f8,6,ffff80001d37e658,0,ffff80001d37e740) at dofilereadv+0x1a2 sys_read(ffff8000ffff84f8,ffff80001d37e6f0,ffff80001d37e740) at sys_read+0x83 syscall(ffff80001d37e7c0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9640, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d37e3a0 rbx 0xffff80001d37e450 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d37e360 r9 0x1 r10 0x65f3757041ef5e3 r11 0xb87bb43297192466 r12 0x3000000008 r13 0xffff80001d37e3b0 r14 0x100 r15 0x1 rip 0xffffffff81fb3e48 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d37e390 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=109369 stat=onproc flags process=0 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff9150,0xffff8000ffff89f8 process=0xffff8000ffff6010 user=0xffff80001d379000, vmspace=0xfffffd806bc0a770 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 77590 330184 14487 0 3 0x82 wait syz-execprog 77590 309694 14487 0 3 0x4000082 nanosleep syz-execprog 77590 345769 14487 0 3 0x4000082 thrsleep syz-execprog 77590 510770 14487 0 3 0x4000082 thrsleep syz-execprog 77590 478139 14487 0 3 0x4000082 thrsleep syz-execprog 77590 311800 14487 0 3 0x4000082 thrsleep syz-execprog 77590 305590 14487 0 3 0x4000082 thrsleep syz-execprog 14487 117978 61378 0 3 0x10008a pause ksh 61378 326317 47127 0 3 0x92 select sshd 79610 375238 1 0 3 0x100083 ttyin getty 47127 103662 1 0 3 0x80 select sshd 73628 236803 95328 73 3 0x100090 kqread syslogd 95328 115627 1 0 3 0x100082 netio syslogd 4790 293487 1 77 2 0x100010 dhclient *76438 109369 1 0 7 0 dhclient 52308 128265 0 0 3 0x14200 pgzero zerothread 93640 298086 0 0 3 0x14200 aiodoned aiodoned 1982 274981 0 0 3 0x14200 syncer update 6084 22210 0 0 3 0x14200 cleaner cleaner 72119 153916 0 0 3 0x14200 reaper reaper 22138 114855 0 0 3 0x14200 pgdaemon pagedaemon 29138 222494 0 0 3 0x14200 bored crynlk 32925 258519 0 0 3 0x14200 bored crypto 15760 323759 0 0 3 0x40014200 acpi0 acpi0 26150 429784 0 0 2 0x14200 softnet 97194 345811 0 0 2 0x14200 systqmp 23952 514030 0 0 3 0x14200 bored systq 90013 465917 0 0 3 0x40014200 bored softclock 5133 416066 0 0 3 0x40014200 idle0 64109 5303 0 0 3 0x14200 bored smr 1 248173 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 63 1K 2K 78643K 157 0 ifaddr 24 7K 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 2 4K 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 11 0K 1K 78643K 22 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 74 11K 12K 78643K 861 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 3 0K 0K 78643K 6 0 temp 18 2997K 3061K 78643K 3055 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 11 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 8 0 5 1 0 1 1 0 8 0 inpcb 280 27 0 21 1 0 1 1 0 8 0 nd6 48 2 0 2 1 0 1 1 0 8 1 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 20 46 0 46 46 0 8 1 ffsino 240 1415 0 20 83 0 83 83 0 8 0 nchpl 144 1640 0 38 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 3864 0 3864 1 0 1 1 0 8 1 scxspl 192 4015 0 4015 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 432 197 0 186 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 pipelkpl 16 67 0 60 1 0 1 1 0 8 0 pipepl 120 134 0 122 1 0 1 1 0 8 0 fdescpl 432 198 0 186 2 0 2 2 0 8 0 filepl 120 998 0 946 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 144 187 0 186 1 0 1 1 0 8 0 processpl 864 212 0 186 4 0 4 4 0 8 0 procpl 632 218 0 186 3 0 3 3 0 8 0 sockpl 400 71 0 55 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5507 0 5474 8 3 5 8 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9611 0 9529 9 2 7 7 0 8 0 bufpl 280 5847 0 1326 323 0 323 323 0 8 0 anonpl 16 20579 0 19105 14 1 13 13 0 107 6 amapchunkpl 152 633 0 572 5 0 5 5 0 158 1 amappl16 192 88 0 64 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 22 0 19 1 0 1 1 0 8 0 amappl12 160 9 0 6 1 0 1 1 0 8 0 amappl11 152 50 0 39 1 0 1 1 0 8 0 amappl10 144 11 0 10 1 0 1 1 0 8 0 amappl9 136 397 0 395 1 0 1 1 0 8 0 amappl8 128 87 0 76 1 0 1 1 0 8 0 amappl7 120 86 0 76 1 0 1 1 0 8 0 amappl6 112 57 0 53 1 0 1 1 0 8 0 amappl5 104 132 0 122 1 0 1 1 0 8 0 amappl4 96 424 0 400 1 0 1 1 0 8 0 amappl3 88 128 0 119 1 0 1 1 0 8 0 amappl2 80 806 0 750 3 0 3 3 0 8 1 amappl1 72 13850 0 13445 26 8 18 20 0 8 8 amappl 80 420 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 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 198 0 186 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 198 0 186 1 0 1 1 0 8 0 vmmpekpl 168 6049 0 6034 1 0 1 1 0 8 0 vmmpepl 168 29624 0 28747 87 8 79 79 0 357 40 vmsppl 272 197 0 186 1 0 1 1 0 8 0 pdppl 4096 402 0 372 5 0 5 5 0 8 0 pvpl 32 104046 0 100308 114 0 114 114 0 265 82 pmappl 200 197 0 186 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 128 0 7 4 0 4 4 0 8 0 ddb>