kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Tue Feb 18 09:38:26 PST 2020 OpenBSD/amd64 (ci-openbsd-main-1.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.81' (ECDSA) to the list of known hosts. 2020/02/18 09:38:37 parsed 1 programs 2020/02/18 09:38:43 executed programs: 0 login: panic: receive 3: so 0xfffffd805e56a640, so_type 3, m 0xfffffd805c942c00, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 64558 4505 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821ac86c) at panic+0x15c soreceive(fffffd805e56a640,0,ffff80001d372bb8,0,0,ffff80001d372ac4) at soreceive+0x16e7 soo_read(fffffd805eb10348,ffff80001d372bb8,0) at soo_read+0x53 dofilereadv(ffff80001d339008,6,ffff80001d372bb8,0,ffff80001d372ca0) at dofilereadv+0x1a1 sys_read(ffff80001d339008,ffff80001d372c50,ffff80001d372ca0) at sys_read+0x83 syscall(ffff80001d372d20) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc65c0, 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 0xfffffd805e56a640, so_type 3, m 0xfffffd805c942c00, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821ac86c) at panic+0x15c soreceive(fffffd805e56a640,0,ffff80001d372bb8,0,0,ffff80001d372ac4) at soreceive+0x16e7 soo_read(fffffd805eb10348,ffff80001d372bb8,0) at soo_read+0x53 dofilereadv(ffff80001d339008,6,ffff80001d372bb8,0,ffff80001d372ca0) at dofilereadv+0x1a1 sys_read(ffff80001d339008,ffff80001d372c50,ffff80001d372ca0) at sys_read+0x83 syscall(ffff80001d372d20) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc65c0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d372900 rbx 0xffff80001d3729b0 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d3728c0 r9 0x1 r10 0x79f65b6ea5b8f4e8 r11 0x60abe223bacb535a r12 0x3000000008 r13 0xffff80001d372910 r14 0x100 r15 0x1 rip 0xffffffff8209c498 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d3728f0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=64558 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d33a118,0xffff80001d339288 process=0xffff8000ffffaa90 user=0xffff80001d36d000, vmspace=0xfffffd806bc09550 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 42762 508227 22632 0 3 0x82 wait syz-execprog 42762 456229 22632 0 3 0x4000082 thrsleep syz-execprog 42762 249066 22632 0 3 0x4000082 thrsleep syz-execprog 42762 143814 22632 0 3 0x4000082 thrsleep syz-execprog 42762 111995 22632 0 3 0x4000082 thrsleep syz-execprog 42762 60671 22632 0 3 0x4000082 kqread syz-execprog 42762 40086 22632 0 3 0x4000082 thrsleep syz-execprog 22632 8306 44408 0 3 0x10008a pause ksh 44408 200380 99586 0 3 0x92 select sshd 47635 264260 1 0 3 0x100083 ttyin getty 99586 87991 1 0 3 0x80 select sshd 90385 126706 89692 73 3 0x100090 kqread syslogd 89692 10305 1 0 3 0x100082 netio syslogd 32084 410457 1 77 2 0x100010 dhclient * 4505 64558 1 0 7 0 dhclient 85512 199268 0 0 3 0x14200 pgzero zerothread 44609 413838 0 0 3 0x14200 aiodoned aiodoned 18893 2674 0 0 3 0x14200 syncer update 31503 439813 0 0 3 0x14200 cleaner cleaner 45246 8628 0 0 3 0x14200 reaper reaper 16565 164244 0 0 3 0x14200 pgdaemon pagedaemon 21135 28299 0 0 3 0x14200 bored crynlk 40816 235393 0 0 3 0x14200 bored crypto 54971 432010 0 0 3 0x40014200 acpi0 acpi0 29780 113241 0 0 2 0x14200 softnet 5738 465109 0 0 2 0x14200 systqmp 14879 519702 0 0 3 0x14200 bored systq 54217 444802 0 0 3 0x40014200 bored softclock 88228 427582 0 0 3 0x40014200 idle0 26131 162470 0 0 3 0x14200 bored smr 1 104845 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 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 66 11K 12K 78643K 838 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 3013K 3077K 78643K 1664 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 4322 0 4322 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 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 5507 0 5474 8 3 5 8 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9586 0 9500 8 1 7 7 0 8 0 bufpl 280 3642 0 156 249 0 249 249 0 8 0 anonpl 16 20235 0 18797 15 2 13 13 0 107 6 amapchunkpl 152 744 0 683 5 0 5 5 0 158 2 amappl16 192 118 0 93 2 0 2 2 0 8 0 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 4 0 3 2 1 1 1 0 8 0 amappl13 168 22 0 20 1 0 1 1 0 8 0 amappl12 160 4 0 2 1 0 1 1 0 8 0 amappl11 152 63 0 51 1 0 1 1 0 8 0 amappl10 144 19 0 15 1 0 1 1 0 8 0 amappl9 136 221 0 219 1 0 1 1 0 8 0 amappl8 128 230 0 224 1 0 1 1 0 8 0 amappl7 120 102 0 92 1 0 1 1 0 8 0 amappl6 112 21 0 18 1 0 1 1 0 8 0 amappl5 104 139 0 130 1 0 1 1 0 8 0 amappl4 96 442 0 416 1 0 1 1 0 8 0 amappl3 88 110 0 105 1 0 1 1 0 8 0 amappl2 80 829 0 775 3 0 3 3 0 8 1 amappl1 72 13672 0 13287 26 9 17 20 0 8 8 amappl 80 419 0 394 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 6030 0 6010 1 0 1 1 0 8 0 vmmpepl 168 28953 0 28120 81 5 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 103126 0 99452 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 112 128 0 6 4 0 4 4 0 8 0 ddb>