kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sun Mar 8 03:49:43 PDT 2020 OpenBSD/amd64 (ci-openbsd-main-1.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.20' (ECDSA) to the list of known hosts. 2020/03/08 03:49:56 parsed 1 programs 2020/03/08 03:50:02 executed programs: 0 login: panic: receive 3: so 0xfffffd805e56c4b0, so_type 3, m 0xfffffd805a147500, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *521540 78561 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821b7b91) at panic+0x15c soreceive(fffffd805e56c4b0,0,ffff80001d371f18,0,0,ffff80001d371e24) at soreceive+0x16e7 soo_read(fffffd805eb12258,ffff80001d371f18,0) at soo_read+0x53 dofilereadv(ffff80001d339758,6,ffff80001d371f18,0,ffff80001d372000) at dofilereadv+0x1a1 sys_read(ffff80001d339758,ffff80001d371fb0,ffff80001d372000) at sys_read+0x83 syscall(ffff80001d372080) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffca780, 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 3: so 0xfffffd805e56c4b0, so_type 3, m 0xfffffd805a147500, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821b7b91) at panic+0x15c soreceive(fffffd805e56c4b0,0,ffff80001d371f18,0,0,ffff80001d371e24) at soreceive+0x16e7 soo_read(fffffd805eb12258,ffff80001d371f18,0) at soo_read+0x53 dofilereadv(ffff80001d339758,6,ffff80001d371f18,0,ffff80001d372000) at dofilereadv+0x1a1 sys_read(ffff80001d339758,ffff80001d371fb0,ffff80001d372000) at sys_read+0x83 syscall(ffff80001d372080) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffca780, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d371c60 rbx 0xffff80001d371d10 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d371c20 r9 0x1 r10 0x5f8c093260127463 r11 0xa10c5b85c5954d80 r12 0x3000000008 r13 0xffff80001d371c70 r14 0x100 r15 0x1 rip 0xffffffff81948ca8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d371c50 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=521540 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d339ea8,0xffff80001d3399d8 process=0xffff8000ffffa710 user=0xffff80001d36d000, vmspace=0xfffffd806bc0a330 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 8447 33916 23778 0 3 0x82 thrsleep syz-execprog 8447 406443 23778 0 3 0x4000082 thrsleep syz-execprog 8447 453790 23778 0 3 0x4000082 thrsleep syz-execprog 8447 84282 23778 0 3 0x4000082 thrsleep syz-execprog 8447 477426 23778 0 3 0x4000082 kqread syz-execprog 8447 207001 23778 0 3 0x4000082 wait syz-execprog 8447 315065 23778 0 3 0x4000082 thrsleep syz-execprog 23778 32194 12040 0 3 0x10008a pause ksh 12040 403406 20080 0 3 0x92 select sshd 59604 229234 1 0 3 0x100083 ttyin getty 20080 211281 1 0 3 0x80 select sshd 59063 164827 57060 73 3 0x100090 kqread syslogd 57060 347803 1 0 3 0x100082 netio syslogd 86806 181784 1 77 2 0x100010 dhclient *78561 521540 1 0 7 0 dhclient 23055 256444 0 0 3 0x14200 bored smr 45597 226470 0 0 3 0x14200 pgzero zerothread 8886 173162 0 0 3 0x14200 aiodoned aiodoned 58985 414076 0 0 3 0x14200 syncer update 61273 278673 0 0 3 0x14200 cleaner cleaner 27064 391582 0 0 3 0x14200 reaper reaper 35202 362498 0 0 3 0x14200 pgdaemon pagedaemon 15593 7109 0 0 3 0x14200 bored crynlk 99709 96753 0 0 3 0x14200 bored crypto 76451 33484 0 0 3 0x40014200 acpi0 acpi0 19529 104466 0 0 2 0x14200 softnet 34964 467509 0 0 2 0x14200 systqmp 79794 143489 0 0 3 0x14200 bored systq 46027 125555 0 0 3 0x40014200 bored softclock 37716 55803 0 0 3 0x40014200 idle0 1 135499 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 9441 6321K 6321K 78643K 10540 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 68 11K 12K 78643K 855 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 3005K 3069K 78643K 1665 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 256 145 0 0 10 0 10 10 0 8 0 art_table 32 146 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 4365 0 4365 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 424 212 0 186 4 0 4 4 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 5517 0 5485 8 3 5 8 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9597 0 9516 9 2 7 7 0 8 0 bufpl 280 3648 0 160 250 0 250 250 0 8 0 anonpl 16 20825 0 19375 14 1 13 13 0 107 6 amapchunkpl 152 743 0 682 5 0 5 5 0 158 2 amappl16 192 125 0 99 2 0 2 2 0 8 0 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 2 0 1 2 1 1 1 0 8 0 amappl13 168 19 0 18 1 0 1 1 0 8 0 amappl12 160 9 0 6 1 0 1 1 0 8 0 amappl11 152 68 0 55 1 0 1 1 0 8 0 amappl10 144 12 0 7 1 0 1 1 0 8 0 amappl9 136 172 0 170 1 0 1 1 0 8 0 amappl8 128 231 0 225 1 0 1 1 0 8 0 amappl7 120 104 0 94 1 0 1 1 0 8 0 amappl6 112 21 0 19 1 0 1 1 0 8 0 amappl5 104 238 0 228 1 0 1 1 0 8 0 amappl4 96 449 0 420 2 0 2 2 0 8 1 amappl3 88 111 0 105 1 0 1 1 0 8 0 amappl2 80 829 0 776 3 0 3 3 0 8 1 amappl1 72 13554 0 13165 26 8 18 20 0 8 8 amappl 80 433 0 408 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 6035 0 6015 1 0 1 1 0 8 0 vmmpepl 168 29228 0 28386 83 6 77 77 0 357 39 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 103732 0 100051 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 112 130 0 7 4 0 4 4 0 8 0 ddb>