kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Thu Jan 23 21:49:44 PST 2020 OpenBSD/amd64 (ci-openbsd-main-4.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.148' (ECDSA) to the list of known hosts. 2020/01/23 21:50:00 parsed 1 programs 2020/01/23 21:50:03 executed programs: 0 login: panic: receive 3: so 0xfffffd805e4e04b0, so_type 3, m 0xfffffd8064deb600, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 28283 20346 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff82192a38) at panic+0x15c soreceive(fffffd805e4e04b0,0,ffff80001d3828f8,0,0,ffff80001d382804) at soreceive+0x16e7 soo_read(fffffd80641fc780,ffff80001d3828f8,0) at soo_read+0x53 dofilereadv(ffff80001d3494e8,6,ffff80001d3828f8,0,ffff80001d3829e0) at dofilereadv+0x1a2 sys_read(ffff80001d3494e8,ffff80001d382990,ffff80001d3829e0) at sys_read+0x83 syscall(ffff80001d382a60) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8800, 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 0xfffffd805e4e04b0, so_type 3, m 0xfffffd8064deb600, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff82192a38) at panic+0x15c soreceive(fffffd805e4e04b0,0,ffff80001d3828f8,0,0,ffff80001d382804) at soreceive+0x16e7 soo_read(fffffd80641fc780,ffff80001d3828f8,0) at soo_read+0x53 dofilereadv(ffff80001d3494e8,6,ffff80001d3828f8,0,ffff80001d3829e0) at dofilereadv+0x1a2 sys_read(ffff80001d3494e8,ffff80001d382990,ffff80001d3829e0) at sys_read+0x83 syscall(ffff80001d382a60) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8800, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d382640 rbx 0xffff80001d3826f0 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d382600 r9 0x1 r10 0x83213fab4fdab4f9 r11 0xc12f666985a9d2ee r12 0x3000000008 r13 0xffff80001d382650 r14 0x100 r15 0x1 rip 0xffffffff810f3718 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d382630 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=28283 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d34a388,0xffff80001d349768 process=0xffff8000ffffa710 user=0xffff80001d37d000, vmspace=0xfffffd806bc09330 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 29523 167246 75758 0 3 0x82 wait syz-execprog 29523 433251 75758 0 3 0x4000082 nanosleep syz-execprog 29523 112588 75758 0 3 0x4000082 thrsleep syz-execprog 29523 214828 75758 0 3 0x4000082 thrsleep syz-execprog 29523 175199 75758 0 3 0x4000082 thrsleep syz-execprog 29523 35660 75758 0 3 0x4000082 thrsleep syz-execprog 29523 459502 75758 0 3 0x4000082 thrsleep syz-execprog 75758 56913 79191 0 3 0x10008a pause ksh 79191 387764 31569 0 3 0x92 select sshd 9092 211861 1 0 3 0x100083 ttyin getty 31569 119127 1 0 3 0x80 select sshd 81041 116577 93342 73 3 0x100090 kqread syslogd 93342 485542 1 0 3 0x100082 netio syslogd 63088 84844 1 77 2 0x100010 dhclient *20346 28283 1 0 7 0 dhclient 5426 117232 0 0 3 0x14200 pgzero zerothread 34129 444351 0 0 3 0x14200 aiodoned aiodoned 56050 239310 0 0 3 0x14200 syncer update 62686 113723 0 0 3 0x14200 cleaner cleaner 66238 465970 0 0 3 0x14200 reaper reaper 80180 282224 0 0 3 0x14200 pgdaemon pagedaemon 18101 274969 0 0 3 0x14200 bored crynlk 7266 415674 0 0 3 0x14200 bored crypto 3019 305486 0 0 3 0x40014200 acpi0 acpi0 37110 390024 0 0 2 0x14200 softnet 35977 358950 0 0 2 0x14200 systqmp 32596 441475 0 0 3 0x14200 bored systq 50990 353605 0 0 3 0x40014200 bored softclock 81085 360631 0 0 3 0x40014200 idle0 64999 302214 0 0 3 0x14200 bored smr 1 418530 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 76 11K 12K 78643K 874 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 3001K 3065K 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 4002 0 4002 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 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 5506 0 5474 7 2 5 7 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9579 0 9497 8 1 7 7 0 8 0 bufpl 280 5847 0 1326 323 0 323 323 0 8 0 anonpl 16 20886 0 19424 15 2 13 13 0 107 6 amapchunkpl 152 802 0 741 5 0 5 5 0 158 2 amappl16 192 81 0 57 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 22 0 18 1 0 1 1 0 8 0 amappl13 168 1 0 0 1 0 1 1 0 8 0 amappl12 160 10 0 6 2 1 1 1 0 8 0 amappl11 152 46 0 35 1 0 1 1 0 8 0 amappl10 144 11 0 9 2 1 1 1 0 8 0 amappl9 136 394 0 392 1 0 1 1 0 8 0 amappl8 128 82 0 73 1 0 1 1 0 8 0 amappl7 120 85 0 76 1 0 1 1 0 8 0 amappl6 112 65 0 60 1 0 1 1 0 8 0 amappl5 104 136 0 126 1 0 1 1 0 8 0 amappl4 96 422 0 399 1 0 1 1 0 8 0 amappl3 88 124 0 117 1 0 1 1 0 8 0 amappl2 80 852 0 795 3 0 3 3 0 8 1 amappl1 72 13823 0 13428 27 10 17 20 0 8 8 amappl 80 428 0 403 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 6053 0 6033 1 0 1 1 0 8 0 vmmpepl 168 29583 0 28719 87 9 78 78 0 357 38 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 104626 0 100900 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 112 129 0 5 4 0 4 4 0 8 0 ddb>