kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Jan 31 16:51:36 PST 2020 OpenBSD/amd64 (ci-openbsd-main-0.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.160' (ECDSA) to the list of known hosts. 2020/01/31 16:51:54 parsed 1 programs 2020/01/31 16:52:02 executed programs: 0 login: panic: receive 1a: so 0xfffffd805e550000, so_type 3, m 0xfffffd8063a00d00, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *321724 98228 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff8219bfee) at panic+0x15c soreceive(fffffd805e550000,0,ffff80001d382668,0,0,ffff80001d382574) at soreceive+0x170a soo_read(fffffd8063bfc5a0,ffff80001d382668,0) at soo_read+0x53 dofilereadv(ffff80001d349278,6,ffff80001d382668,0,ffff80001d382750) at dofilereadv+0x1a2 sys_read(ffff80001d349278,ffff80001d382700,ffff80001d382750) at sys_read+0x83 syscall(ffff80001d3827d0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8840, 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 0xfffffd805e550000, so_type 3, m 0xfffffd8063a00d00, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff8219bfee) at panic+0x15c soreceive(fffffd805e550000,0,ffff80001d382668,0,0,ffff80001d382574) at soreceive+0x170a soo_read(fffffd8063bfc5a0,ffff80001d382668,0) at soo_read+0x53 dofilereadv(ffff80001d349278,6,ffff80001d382668,0,ffff80001d382750) at dofilereadv+0x1a2 sys_read(ffff80001d349278,ffff80001d382700,ffff80001d382750) at sys_read+0x83 syscall(ffff80001d3827d0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8840, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d3823b0 rbx 0xffff80001d382460 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d382370 r9 0x1 r10 0xa67ea8ce478474ad r11 0xeeef674756a62f18 r12 0x3000000008 r13 0xffff80001d3823c0 r14 0x100 r15 0x1 rip 0xffffffff81ed2688 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d3823a0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=321724 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d34a388,0xffff80001d349018 process=0xffff8000ffffa390 user=0xffff80001d37d000, 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 73581 67779 42501 0 3 0x82 thrsleep syz-execprog 73581 113932 42501 0 3 0x4000082 thrsleep syz-execprog 73581 141316 42501 0 3 0x4000082 thrsleep syz-execprog 73581 51069 42501 0 3 0x4000082 thrsleep syz-execprog 73581 261616 42501 0 3 0x4000082 kqread syz-execprog 73581 310244 42501 0 3 0x4000082 wait syz-execprog 73581 403034 42501 0 3 0x4000082 thrsleep syz-execprog 42501 410980 35574 0 3 0x10008a pause ksh 35574 44109 62517 0 3 0x92 select sshd 8958 303405 1 0 3 0x100083 ttyin getty 62517 464731 1 0 3 0x80 select sshd 951 497704 38820 73 3 0x100090 kqread syslogd 38820 509199 1 0 3 0x100082 netio syslogd 32420 190805 1 77 2 0x100010 dhclient *98228 321724 1 0 7 0 dhclient 49606 208934 0 0 3 0x14200 pgzero zerothread 56011 445396 0 0 3 0x14200 aiodoned aiodoned 36020 300486 0 0 3 0x14200 syncer update 25061 395265 0 0 3 0x14200 cleaner cleaner 47839 511533 0 0 3 0x14200 reaper reaper 39069 1484 0 0 3 0x14200 pgdaemon pagedaemon 8902 209397 0 0 3 0x14200 bored crynlk 97546 518245 0 0 3 0x14200 bored crypto 28548 186926 0 0 3 0x40014200 acpi0 acpi0 60879 451092 0 0 2 0x14200 softnet 89868 521551 0 0 2 0x14200 systqmp 51142 463724 0 0 3 0x14200 bored systq 79528 155909 0 0 3 0x40014200 bored softclock 74578 418802 0 0 3 0x40014200 idle0 62478 335912 0 0 3 0x14200 bored smr 1 95936 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 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 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 74 11K 12K 78643K 864 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 1691 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 2 1 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 2 1 1 1 0 8 1 scxspl 192 4393 0 4393 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 104 2 0 0 1 0 1 1 0 8 0 pipelkpl 16 67 0 61 2 1 1 1 0 8 0 pipepl 120 134 0 123 2 1 1 1 0 8 0 fdescpl 432 198 0 186 2 0 2 2 0 8 0 filepl 120 998 0 947 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 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 2 1 1 1 0 8 1 mcl2k 2048 5504 0 5468 8 2 6 8 0 8 1 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9563 0 9482 8 1 7 7 0 8 0 bufpl 280 3713 0 179 253 0 253 253 0 8 0 anonpl 16 20308 0 18836 14 1 13 13 0 107 6 amapchunkpl 152 696 0 635 5 0 5 5 0 158 2 amappl16 192 86 0 62 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 21 0 18 2 1 1 1 0 8 0 amappl12 160 11 0 7 2 1 1 1 0 8 0 amappl11 152 41 0 30 1 0 1 1 0 8 0 amappl10 144 10 0 8 1 0 1 1 0 8 0 amappl9 136 395 0 392 1 0 1 1 0 8 0 amappl8 128 86 0 76 1 0 1 1 0 8 0 amappl7 120 87 0 77 1 0 1 1 0 8 0 amappl6 112 60 0 54 1 0 1 1 0 8 0 amappl5 104 128 0 119 1 0 1 1 0 8 0 amappl4 96 426 0 400 1 0 1 1 0 8 0 amappl3 88 122 0 115 1 0 1 1 0 8 0 amappl2 80 851 0 793 3 0 3 3 0 8 1 amappl1 72 13503 0 13103 26 8 18 20 0 8 8 amappl 80 421 0 396 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 6055 0 6034 1 0 1 1 0 8 0 vmmpepl 168 29513 0 28637 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 103469 0 99742 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 112 132 0 7 4 0 4 4 0 8 0 ddb>