kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sun Feb 16 11:31:43 PST 2020 OpenBSD/amd64 (ci-openbsd-main-2.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.181' (ECDSA) to the list of known hosts. 2020/02/16 11:31:55 parsed 1 programs 2020/02/16 11:32:00 executed programs: 0 login: panic: receive 1a: so 0xfffffd805e569190, so_type 3, m 0xfffffd805a945300, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *173468 65253 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821b9a61) at panic+0x15c soreceive(fffffd805e569190,0,ffff80001d372648,0,0,ffff80001d372554) at soreceive+0x170a soo_read(fffffd805eb10690,ffff80001d372648,0) at soo_read+0x53 dofilereadv(ffff80001d339c38,6,ffff80001d372648,0,ffff80001d372730) at dofilereadv+0x1a1 sys_read(ffff80001d339c38,ffff80001d3726e0,ffff80001d372730) at sys_read+0x83 syscall(ffff80001d3727b0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbcac0, 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 0xfffffd805e569190, so_type 3, m 0xfffffd805a945300, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821b9a61) at panic+0x15c soreceive(fffffd805e569190,0,ffff80001d372648,0,0,ffff80001d372554) at soreceive+0x170a soo_read(fffffd805eb10690,ffff80001d372648,0) at soo_read+0x53 dofilereadv(ffff80001d339c38,6,ffff80001d372648,0,ffff80001d372730) at dofilereadv+0x1a1 sys_read(ffff80001d339c38,ffff80001d3726e0,ffff80001d372730) at sys_read+0x83 syscall(ffff80001d3727b0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbcac0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d372390 rbx 0xffff80001d372440 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d372350 r9 0x1 r10 0x10411bef3ae2af31 r11 0xa2e9c117eb48c0b3 r12 0x3000000008 r13 0xffff80001d3723a0 r14 0x100 r15 0x1 rip 0xffffffff81cd8128 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d372380 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=173468 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d3399c8,0xffff80001d33a398 process=0xffff8000ffffaa90 user=0xffff80001d36d000, vmspace=0xfffffd806bc09110 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 61367 165329 93656 0 3 0x82 thrsleep syz-execprog 61367 84299 93656 0 3 0x4000082 thrsleep syz-execprog 61367 500377 93656 0 3 0x4000082 thrsleep syz-execprog 61367 72602 93656 0 3 0x4000082 thrsleep syz-execprog 61367 266653 93656 0 3 0x4000082 wait syz-execprog 61367 423097 93656 0 3 0x4000082 kqread syz-execprog 61367 375147 93656 0 3 0x4000082 thrsleep syz-execprog 93656 282170 34476 0 3 0x10008a pause ksh 34476 40637 26530 0 3 0x92 select sshd 64579 371646 1 0 3 0x100083 ttyin getty 26530 5951 1 0 3 0x80 select sshd 68184 390542 60679 73 3 0x100090 kqread syslogd 60679 220958 1 0 3 0x100082 netio syslogd 68878 48626 1 77 2 0x100010 dhclient *65253 173468 1 0 7 0 dhclient 65982 305086 0 0 3 0x14200 pgzero zerothread 31269 388121 0 0 3 0x14200 aiodoned aiodoned 76006 431669 0 0 3 0x14200 syncer update 31415 28578 0 0 3 0x14200 cleaner cleaner 64137 300795 0 0 3 0x14200 reaper reaper 89952 78700 0 0 3 0x14200 pgdaemon pagedaemon 69420 298745 0 0 3 0x14200 bored crynlk 86814 512236 0 0 3 0x14200 bored crypto 35927 151149 0 0 3 0x40014200 acpi0 acpi0 32675 31408 0 0 2 0x14200 softnet 47859 324718 0 0 2 0x14200 systqmp 85429 37181 0 0 3 0x14200 bored systq 61023 111376 0 0 3 0x40014200 bored softclock 76873 239646 0 0 3 0x40014200 idle0 21942 129708 0 0 3 0x14200 bored smr 1 188622 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 61 1K 2K 78643K 155 0 ifaddr 24 7K 9K 78643K 33 0 counters 19 16K 16K 78643K 20 0 ioctlops 0 0K 2K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1182 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 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 67 11K 12K 78643K 842 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 3013K 3077K 78643K 1666 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 12 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 3 0 3 1 0 1 1 0 8 1 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 dino1pl 128 1414 0 20 45 0 45 45 0 8 0 ffsino 240 1414 0 20 83 0 83 83 0 8 1 nchpl 144 1639 0 38 60 0 60 60 0 8 0 uvmvnodes 72 1423 0 0 26 0 26 26 0 8 0 vnodes 208 1423 0 0 75 0 75 75 0 8 0 namei 1024 3833 0 3833 1 0 1 1 0 8 1 scxspl 192 4335 0 4335 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 30 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipelkpl 16 67 0 61 1 0 1 1 0 8 0 pipepl 120 134 0 123 1 0 1 1 0 8 0 fdescpl 432 198 0 186 2 0 2 2 0 8 0 filepl 120 964 0 913 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 896 212 0 186 4 0 4 4 0 8 0 procpl 624 218 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 5505 0 5477 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9574 0 9495 7 0 7 7 0 8 0 bufpl 280 3648 0 161 250 0 250 250 0 8 0 anonpl 16 20406 0 18958 15 2 13 13 0 107 6 amapchunkpl 152 729 0 668 5 0 5 5 0 158 2 amappl16 192 136 0 110 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 7 0 5 2 1 1 1 0 8 0 amappl13 168 18 0 17 1 0 1 1 0 8 0 amappl12 160 8 0 7 1 0 1 1 0 8 0 amappl11 152 64 0 52 1 0 1 1 0 8 0 amappl10 144 15 0 10 1 0 1 1 0 8 0 amappl9 136 209 0 206 1 0 1 1 0 8 0 amappl8 128 230 0 223 1 0 1 1 0 8 0 amappl7 120 103 0 94 1 0 1 1 0 8 0 amappl6 112 21 0 20 1 0 1 1 0 8 0 amappl5 104 169 0 160 1 0 1 1 0 8 0 amappl4 96 450 0 421 1 0 1 1 0 8 0 amappl3 88 114 0 106 1 0 1 1 0 8 0 amappl2 80 830 0 778 3 0 3 3 0 8 1 amappl1 72 13349 0 12962 26 9 17 20 0 8 8 amappl 80 419 0 394 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 6031 0 6011 1 0 1 1 0 8 0 vmmpepl 168 29092 0 28257 83 6 77 77 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 103063 0 99377 113 0 113 113 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 112 125 0 4 4 0 4 4 0 8 0 ddb>