kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Mon Dec 23 15:23:03 PST 2019 OpenBSD/amd64 (ci-openbsd-main-8.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.2' (ECDSA) to the list of known hosts. 2019/12/23 15:23:34 parsed 1 programs 2019/12/23 15:23:41 executed programs: 0 login: panic: receive 1a: so 0xfffffd805e4ed300, so_type 3, m 0xfffffd805bfdd300, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *119535 3740 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff8219b55b) at panic+0x15c soreceive(fffffd805e4ed300,0,ffff80001d376228,0,0,ffff80001d376134) at soreceive+0x170a soo_read(fffffd80669f6780,ffff80001d376228,0) at soo_read+0x53 dofilereadv(ffff8000ffff8280,6,ffff80001d376228,0,ffff80001d376310) at dofilereadv+0x1a2 sys_read(ffff8000ffff8280,ffff80001d3762c0,ffff80001d376310) at sys_read+0x83 syscall(ffff80001d376390) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffec0a0, 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 0xfffffd805e4ed300, so_type 3, m 0xfffffd805bfdd300, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff8219b55b) at panic+0x15c soreceive(fffffd805e4ed300,0,ffff80001d376228,0,0,ffff80001d376134) at soreceive+0x170a soo_read(fffffd80669f6780,ffff80001d376228,0) at soo_read+0x53 dofilereadv(ffff8000ffff8280,6,ffff80001d376228,0,ffff80001d376310) at dofilereadv+0x1a2 sys_read(ffff8000ffff8280,ffff80001d3762c0,ffff80001d376310) at sys_read+0x83 syscall(ffff80001d376390) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffec0a0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d375f70 rbx 0xffff80001d376020 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d375f30 r9 0x1 r10 0x1d4970ff274991a4 r11 0xea269558a787a7f1 r12 0x3000000008 r13 0xffff80001d375f80 r14 0x100 r15 0x1 rip 0xffffffff81113a28 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d375f60 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=119535 stat=onproc flags process=0 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8ed8,0xffff8000ffff8508 process=0xffff8000ffff6010 user=0xffff80001d371000, vmspace=0xfffffd806bc12440 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 65196 223691 64007 0 3 0x82 thrsleep syz-execprog 65196 206794 64007 0 3 0x4000082 nanosleep syz-execprog 65196 100392 64007 0 3 0x4000082 thrsleep syz-execprog 65196 303699 64007 0 3 0x4000082 thrsleep syz-execprog 65196 216132 64007 0 3 0x4000082 wait syz-execprog 65196 458916 64007 0 3 0x4000082 thrsleep syz-execprog 65196 406556 64007 0 3 0x4000082 thrsleep syz-execprog 64007 510730 2054 0 3 0x10008a pause ksh 2054 179608 98504 0 3 0x92 select sshd 78101 352924 1 0 3 0x100083 ttyin getty 98504 392255 1 0 3 0x80 select sshd 28833 259417 61203 73 3 0x100090 kqread syslogd 61203 126535 1 0 3 0x100082 netio syslogd 20672 252650 1 77 2 0x100010 dhclient * 3740 119535 1 0 7 0 dhclient 63018 225743 0 0 3 0x14200 pgzero zerothread 15335 319158 0 0 3 0x14200 aiodoned aiodoned 31225 408587 0 0 3 0x14200 syncer update 41504 237898 0 0 3 0x14200 cleaner cleaner 74630 13096 0 0 3 0x14200 reaper reaper 22315 245141 0 0 3 0x14200 pgdaemon pagedaemon 34489 477493 0 0 3 0x14200 bored crynlk 99100 130947 0 0 3 0x14200 bored crypto 22760 179243 0 0 3 0x40014200 acpi0 acpi0 43204 362766 0 0 2 0x14200 softnet 91173 326642 0 0 2 0x14200 systqmp 62861 8224 0 0 3 0x14200 bored systq 22545 133879 0 0 3 0x40014200 bored softclock 12033 301985 0 0 3 0x40014200 idle0 93695 82772 0 0 3 0x14200 bored smr 1 49919 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 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 74 11K 12K 78643K 863 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 22 3017K 3081K 78643K 3060 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 2 1 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 256 166 0 0 11 0 11 11 0 8 0 art_table 32 167 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 2 1 1 1 0 8 1 scxspl 192 4175 0 4175 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 pipepl 128 134 0 122 2 1 1 1 0 8 0 fdescpl 424 198 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 2 1 1 1 0 8 0 processpl 872 212 0 186 4 0 4 4 0 8 0 procpl 632 218 0 186 3 0 3 3 0 8 0 sockpl 384 71 0 55 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 2 1 1 1 0 8 1 mcl2k 2048 5626 0 5596 7 3 4 7 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 10046 0 9965 10 3 7 7 0 8 0 bufpl 280 5846 0 1326 323 0 323 323 0 8 0 anonpl 16 20326 0 18860 15 2 13 13 0 107 6 amapchunkpl 152 695 0 636 5 0 5 5 0 158 2 amappl16 192 71 0 47 2 0 2 2 0 8 0 amappl15 184 52 0 47 1 0 1 1 0 8 0 amappl14 176 22 0 20 2 1 1 1 0 8 0 amappl13 168 1 0 0 1 0 1 1 0 8 0 amappl12 160 1 0 0 1 0 1 1 0 8 0 amappl11 152 41 0 30 1 0 1 1 0 8 0 amappl10 144 8 0 6 1 0 1 1 0 8 0 amappl9 136 193 0 191 1 0 1 1 0 8 0 amappl8 128 82 0 72 1 0 1 1 0 8 0 amappl7 120 93 0 83 1 0 1 1 0 8 0 amappl6 112 53 0 50 1 0 1 1 0 8 0 amappl5 104 533 0 523 1 0 1 1 0 8 0 amappl4 96 427 0 401 1 0 1 1 0 8 0 amappl3 88 125 0 117 1 0 1 1 0 8 0 amappl2 80 852 0 795 4 1 3 3 0 8 1 amappl1 72 13416 0 13014 26 8 18 20 0 8 8 amappl 80 418 0 393 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 6047 0 6032 1 0 1 1 0 8 0 vmmpepl 168 29767 0 28894 96 18 78 78 0 357 37 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 103562 0 99852 119 6 113 113 0 265 81 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 10 4 0 4 4 0 8 0 ddb>