kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Thu Dec 19 20:19:45 PST 2019 OpenBSD/amd64 (ci-openbsd-main-6.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.10.1' (ECDSA) to the list of known hosts. 2019/12/19 20:20:04 parsed 1 programs 2019/12/19 20:20:07 executed programs: 0 login: panic: receive 1a: so 0xfffffd805e4e2000, so_type 3, m 0xfffffd806b5ff200, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *187479 61706 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff82197ea8) at panic+0x15c soreceive(fffffd805e4e2000,0,ffff80001d376088,0,0,ffff80001d375f94) at soreceive+0x170a soo_read(fffffd80669f68e8,ffff80001d376088,0) at soo_read+0x53 dofilereadv(ffff8000ffff8770,6,ffff80001d376088,0,ffff80001d376170) at dofilereadv+0x1a2 sys_read(ffff8000ffff8770,ffff80001d376120,ffff80001d376170) at sys_read+0x83 syscall(ffff80001d3761f0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd2360, 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 0xfffffd805e4e2000, so_type 3, m 0xfffffd806b5ff200, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff82197ea8) at panic+0x15c soreceive(fffffd805e4e2000,0,ffff80001d376088,0,0,ffff80001d375f94) at soreceive+0x170a soo_read(fffffd80669f68e8,ffff80001d376088,0) at soo_read+0x53 dofilereadv(ffff8000ffff8770,6,ffff80001d376088,0,ffff80001d376170) at dofilereadv+0x1a2 sys_read(ffff8000ffff8770,ffff80001d376120,ffff80001d376170) at sys_read+0x83 syscall(ffff80001d3761f0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd2360, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d375dd0 rbx 0xffff80001d375e80 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d375d90 r9 0x1 r10 0xf1cc68d86dfbccf6 r11 0x8f2d1b6076e67d89 r12 0x3000000008 r13 0xffff80001d375de0 r14 0x100 r15 0x1 rip 0xffffffff82063a78 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d375dc0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=187479 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8ed8,0xffff8000ffff8c70 process=0xffff8000ffff6010 user=0xffff80001d371000, vmspace=0xfffffd806bc11770 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 47948 505223 29244 0 3 0x82 thrsleep syz-execprog 47948 401499 29244 0 3 0x4000082 nanosleep syz-execprog 47948 77000 29244 0 3 0x4000082 thrsleep syz-execprog 47948 416852 29244 0 3 0x4000082 thrsleep syz-execprog 47948 333358 29244 0 3 0x4000082 wait syz-execprog 47948 378324 29244 0 3 0x4000082 thrsleep syz-execprog 47948 174876 29244 0 3 0x4000082 thrsleep syz-execprog 29244 273329 81265 0 3 0x10008a pause ksh 81265 484753 21839 0 3 0x92 select sshd 53828 183119 1 0 3 0x100083 ttyin getty 21839 68392 1 0 3 0x80 select sshd 20926 369797 7461 73 3 0x100090 kqread syslogd 7461 165377 1 0 3 0x100082 netio syslogd 36809 2339 1 77 2 0x100010 dhclient *61706 187479 1 0 7 0 dhclient 55058 209660 0 0 2 0x14200 zerothread 58112 88963 0 0 3 0x14200 aiodoned aiodoned 65083 24749 0 0 3 0x14200 syncer update 3554 135472 0 0 3 0x14200 cleaner cleaner 38452 378501 0 0 3 0x14200 reaper reaper 79791 439904 0 0 3 0x14200 pgdaemon pagedaemon 26065 444818 0 0 3 0x14200 bored crynlk 73714 250866 0 0 3 0x14200 bored crypto 66473 141599 0 0 3 0x40014200 acpi0 acpi0 8993 179395 0 0 2 0x14200 softnet 59550 193813 0 0 2 0x14200 systqmp 20398 56226 0 0 3 0x14200 bored systq 17589 489555 0 0 2 0x40014200 softclock 87689 452198 0 0 3 0x40014200 idle0 84820 327073 0 0 3 0x14200 bored smr 1 97799 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 859 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 3013K 3077K 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 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 256 168 0 0 11 0 11 11 0 8 0 art_table 32 169 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 4006 0 4006 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 1 0 1 1 0 8 1 mcl2k 2048 5479 0 5450 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9562 0 9485 8 1 7 7 0 8 0 bufpl 280 5845 0 1326 323 0 323 323 0 8 0 anonpl 16 20397 0 18928 15 2 13 13 0 107 6 amapchunkpl 152 755 0 696 5 0 5 5 0 158 2 amappl16 192 81 0 56 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 23 0 20 2 1 1 1 0 8 0 amappl12 160 9 0 7 1 0 1 1 0 8 0 amappl11 152 46 0 35 1 0 1 1 0 8 0 amappl10 144 15 0 12 1 0 1 1 0 8 0 amappl9 136 380 0 378 1 0 1 1 0 8 0 amappl8 128 84 0 74 1 0 1 1 0 8 0 amappl7 120 86 0 76 1 0 1 1 0 8 0 amappl6 112 54 0 50 1 0 1 1 0 8 0 amappl5 104 159 0 149 1 0 1 1 0 8 0 amappl4 96 426 0 401 1 0 1 1 0 8 0 amappl3 88 125 0 118 1 0 1 1 0 8 0 amappl2 80 832 0 773 4 1 3 3 0 8 1 amappl1 72 13683 0 13283 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 6051 0 6035 1 0 1 1 0 8 0 vmmpepl 168 29660 0 28785 88 10 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 104025 0 100318 115 2 113 113 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 112 123 0 5 4 0 4 4 0 8 0 ddb>