kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Nov 29 11:04:11 PST 2019 OpenBSD/amd64 (ci-openbsd-main-1.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.215' (ECDSA) to the list of known hosts. 2019/11/29 11:04:25 parsed 1 programs 2019/11/29 11:04:31 executed programs: 0 login: panic: receive 3: so 0xfffffd803866c300, so_type 3, m 0xfffffd8034c52400, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *439819 26587 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic() at panic+0x15c soreceive(fffffd803866c300,0,ffff800014886758,0,0,ffff800014886664) at soreceive+0x16e7 soo_read(fffffd803755b0f0,ffff800014886758,0) at soo_read+0x53 dofilereadv(ffff8000ffff87a0,6,ffff800014886758,0,ffff800014886840) at dofilereadv+0x1a2 sys_read(ffff8000ffff87a0,ffff8000148867f0,ffff800014886840) at sys_read+0x83 syscall(ffff8000148868c0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe4cf0, 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 0xfffffd803866c300, so_type 3, m 0xfffffd8034c52400, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic() at panic+0x15c soreceive(fffffd803866c300,0,ffff800014886758,0,0,ffff800014886664) at soreceive+0x16e7 soo_read(fffffd803755b0f0,ffff800014886758,0) at soo_read+0x53 dofilereadv(ffff8000ffff87a0,6,ffff800014886758,0,ffff800014886840) at dofilereadv+0x1a2 sys_read(ffff8000ffff87a0,ffff8000148867f0,ffff800014886840) at sys_read+0x83 syscall(ffff8000148868c0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe4cf0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff8000148864a0 rbx 0xffff800014886550 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff800014886460 r9 0x1 r10 0x43b43e827d2e9eac r11 0xac8b0e5ddf372cf0 r12 0x3000000008 r13 0xffff8000148864b0 r14 0x100 r15 0x1 rip 0xffffffff819579e8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800014886490 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=439819 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8f38,0xffff8000ffff8a38 process=0xffff8000ffff6710 user=0xffff800014881000, vmspace=0xfffffd803f012220 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 98 76384 17878 0 3 0x82 thrsleep syz-execprog 98 490260 17878 0 3 0x4000082 nanosleep syz-execprog 98 56468 17878 0 3 0x4000082 thrsleep syz-execprog 98 119887 17878 0 3 0x4000082 thrsleep syz-execprog 98 437698 17878 0 3 0x4000082 thrsleep syz-execprog 98 268192 17878 0 3 0x4000082 wait syz-execprog 98 100125 17878 0 3 0x4000082 thrsleep syz-execprog 17878 444199 66478 0 3 0x10008a pause ksh 66478 339498 42965 0 3 0x92 select sshd 20342 410401 1 0 3 0x100083 ttyin getty 42965 174839 1 0 3 0x80 select sshd 91438 494011 31493 73 3 0x100090 kqread syslogd 31493 519160 1 0 3 0x100082 netio syslogd 60813 386758 1 77 2 0x100010 dhclient *26587 439819 1 0 7 0 dhclient 85814 316003 0 0 3 0x14200 pgzero zerothread 36808 298679 0 0 3 0x14200 aiodoned aiodoned 30664 33174 0 0 3 0x14200 syncer update 94815 132678 0 0 3 0x14200 cleaner cleaner 42341 57028 0 0 3 0x14200 reaper reaper 63768 83560 0 0 3 0x14200 pgdaemon pagedaemon 43900 396588 0 0 3 0x14200 bored crynlk 26955 290146 0 0 3 0x14200 bored crypto 49713 328726 0 0 3 0x40014200 acpi0 acpi0 48786 55859 0 0 2 0x14200 softnet 97423 95749 0 0 2 0x14200 systqmp 73459 325811 0 0 3 0x14200 bored systq 26388 133146 0 0 3 0x40014200 bored softclock 5032 486362 0 0 3 0x40014200 idle0 29029 409411 0 0 3 0x14200 bored smr 1 422356 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 6320K 6320K 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 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 64 11K 11K 78643K 840 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 3545K 3609K 78643K 3028 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 96 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 280 5 0 5 1 0 1 1 0 8 1 tcpcb 640 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 1412 0 19 45 0 45 45 0 8 0 ffsino 240 1412 0 19 82 0 82 82 0 8 0 nchpl 144 1637 0 35 60 0 60 60 0 8 0 uvmvnodes 72 1421 0 0 26 0 26 26 0 8 0 vnodes 208 1421 0 0 75 0 75 75 0 8 0 namei 1024 3836 0 3836 1 0 1 1 0 8 1 scxspl 208 3987 0 3987 2 1 1 2 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 432 196 0 185 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 1 0 1 1 0 8 0 fdescpl 424 197 0 185 2 0 2 2 0 8 0 filepl 120 973 0 921 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 128 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 144 186 0 185 1 0 1 1 0 8 0 processpl 896 211 0 185 4 0 4 4 0 8 0 procpl 648 217 0 185 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 5478 0 5448 7 2 5 7 0 8 1 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9527 0 9451 9 2 7 7 0 8 0 bufpl 280 5785 0 1323 319 0 319 319 0 8 0 anonpl 16 20119 0 18690 15 2 13 13 0 62 6 amapchunkpl 152 762 0 703 5 0 5 5 0 158 2 amappl16 192 131 0 103 2 0 2 2 0 8 0 amappl15 184 8 0 7 1 0 1 1 0 8 0 amappl14 176 44 0 39 1 0 1 1 0 8 0 amappl12 160 4 0 2 1 0 1 1 0 8 0 amappl11 152 48 0 37 1 0 1 1 0 8 0 amappl10 144 11 0 10 1 0 1 1 0 8 0 amappl9 136 381 0 379 1 0 1 1 0 8 0 amappl8 128 113 0 104 1 0 1 1 0 8 0 amappl7 120 30 0 27 1 0 1 1 0 8 0 amappl6 112 57 0 51 1 0 1 1 0 8 0 amappl5 104 154 0 144 1 0 1 1 0 8 0 amappl4 96 424 0 399 1 0 1 1 0 8 0 amappl3 88 116 0 111 1 0 1 1 0 8 0 amappl2 80 840 0 787 3 0 3 3 0 8 1 amappl1 72 13259 0 12871 27 10 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 24 197 0 185 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 197 0 185 1 0 1 1 0 8 0 vmmpekpl 168 6160 0 6144 1 0 1 1 0 8 0 vmmpepl 168 28854 0 28033 84 7 77 77 0 357 38 vmsppl 272 196 0 185 1 0 1 1 0 8 0 pdppl 4096 400 0 370 5 0 5 5 0 8 0 pvpl 32 103288 0 99609 113 0 113 113 0 265 81 pmappl 200 196 0 185 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 123 0 6 4 0 4 4 0 8 0 ddb>