kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sun Mar 1 08:26:27 PST 2020 OpenBSD/amd64 (ci-openbsd-main-6.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.244' (ECDSA) to the list of known hosts. 2020/03/01 08:26:41 parsed 1 programs 2020/03/01 08:26:45 executed programs: 0 login: panic: receive 3: so 0xfffffd805e565190, so_type 3, m 0xfffffd805a0f7300, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 53863 79167 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821b1256) at panic+0x15c soreceive(fffffd805e565190,0,ffff80001d372108,0,0,ffff80001d372014) at soreceive+0x16e7 soo_read(fffffd80617f27f8,ffff80001d372108,0) at soo_read+0x53 dofilereadv(ffff80001d3394e8,6,ffff80001d372108,0,ffff80001d3721f0) at dofilereadv+0x1a1 sys_read(ffff80001d3394e8,ffff80001d3721a0,ffff80001d3721f0) at sys_read+0x83 syscall(ffff80001d372270) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff3d50, 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 0xfffffd805e565190, so_type 3, m 0xfffffd805a0f7300, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821b1256) at panic+0x15c soreceive(fffffd805e565190,0,ffff80001d372108,0,0,ffff80001d372014) at soreceive+0x16e7 soo_read(fffffd80617f27f8,ffff80001d372108,0) at soo_read+0x53 dofilereadv(ffff80001d3394e8,6,ffff80001d372108,0,ffff80001d3721f0) at dofilereadv+0x1a1 sys_read(ffff80001d3394e8,ffff80001d3721a0,ffff80001d3721f0) at sys_read+0x83 syscall(ffff80001d372270) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff3d50, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d371e50 rbx 0xffff80001d371f00 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d371e10 r9 0x1 r10 0x34144a2ece2cd7e6 r11 0xd5d4fef44a55bffa r12 0x3000000008 r13 0xffff80001d371e60 r14 0x100 r15 0x1 rip 0xffffffff81ea1968 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d371e40 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=53863 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d33a118,0xffff80001d339768 process=0xffff8000ffffaa90 user=0xffff80001d36d000, vmspace=0xfffffd806bc0a440 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 11897 402671 7240 0 3 0x82 thrsleep syz-execprog 11897 43600 7240 0 3 0x4000082 thrsleep syz-execprog 11897 119873 7240 0 3 0x4000082 thrsleep syz-execprog 11897 106853 7240 0 3 0x4000082 thrsleep syz-execprog 11897 281636 7240 0 3 0x4000082 wait syz-execprog 11897 193574 7240 0 3 0x4000082 kqread syz-execprog 11897 430613 7240 0 3 0x4000082 thrsleep syz-execprog 7240 425908 59324 0 3 0x10008a pause ksh 59324 269422 80838 0 3 0x92 select sshd 99760 145533 1 0 3 0x100083 ttyin getty 80838 52340 1 0 3 0x80 select sshd 36598 137341 18216 73 3 0x100090 kqread syslogd 18216 399829 1 0 3 0x100082 netio syslogd 23011 40701 1 77 2 0x100010 dhclient *79167 53863 1 0 7 0 dhclient 49222 211213 0 0 3 0x14200 bored smr 62103 106558 0 0 3 0x14200 pgzero zerothread 54393 229810 0 0 3 0x14200 aiodoned aiodoned 51324 408851 0 0 3 0x14200 syncer update 94162 341273 0 0 3 0x14200 cleaner cleaner 76660 412019 0 0 3 0x14200 reaper reaper 76695 447842 0 0 3 0x14200 pgdaemon pagedaemon 86002 385424 0 0 3 0x14200 bored crynlk 82806 390268 0 0 3 0x14200 bored crypto 55085 122955 0 0 3 0x40014200 acpi0 acpi0 10906 200883 0 0 2 0x14200 softnet 35029 17369 0 0 2 0x14200 systqmp 58166 162089 0 0 3 0x14200 bored systq 79203 336833 0 0 3 0x40014200 bored softclock 62 454462 0 0 3 0x40014200 idle0 1 438968 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 156 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 847 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 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 4338 0 4338 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 5506 0 5478 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9575 0 9500 8 1 7 7 0 8 0 bufpl 280 3649 0 161 250 0 250 250 0 8 0 anonpl 16 20522 0 19083 14 1 13 13 0 107 6 amapchunkpl 152 753 0 692 5 0 5 5 0 158 1 amappl16 192 126 0 98 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 5 0 2 2 1 1 1 0 8 0 amappl13 168 18 0 17 1 0 1 1 0 8 0 amappl12 160 6 0 5 1 0 1 1 0 8 0 amappl11 152 65 0 53 1 0 1 1 0 8 0 amappl10 144 12 0 9 1 0 1 1 0 8 0 amappl9 136 228 0 226 1 0 1 1 0 8 0 amappl8 128 231 0 225 1 0 1 1 0 8 0 amappl7 120 112 0 102 1 0 1 1 0 8 0 amappl6 112 20 0 19 1 0 1 1 0 8 0 amappl5 104 127 0 117 1 0 1 1 0 8 0 amappl4 96 448 0 420 1 0 1 1 0 8 0 amappl3 88 111 0 105 1 0 1 1 0 8 0 amappl2 80 813 0 760 3 0 3 3 0 8 1 amappl1 72 13445 0 13057 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 6037 0 6017 1 0 1 1 0 8 0 vmmpepl 168 29068 0 28237 83 7 76 76 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 103442 0 99773 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 112 126 0 5 4 0 4 4 0 8 0 ddb>