kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Mon Mar 16 23:54:11 PDT 2020 OpenBSD/amd64 (ci-openbsd-main-8.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.27' (ECDSA) to the list of known hosts. 2020/03/16 23:54:26 parsed 1 programs 2020/03/16 23:54:29 executed programs: 0 login: panic: receive 3: so 0xfffffd805e561000, so_type 3, m 0xfffffd805c180400, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *516144 66034 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821b6c1b) at panic+0x15c soreceive(fffffd805e561000,0,ffff80001d372388,0,0,ffff80001d372294) at soreceive+0x16e7 soo_read(fffffd805eb0d5a0,ffff80001d372388,0) at soo_read+0x53 dofilereadv(ffff80001d339278,6,ffff80001d372388,0,ffff80001d372470) at dofilereadv+0x1a1 sys_read(ffff80001d339278,ffff80001d372420,ffff80001d372470) at sys_read+0x83 syscall(ffff80001d3724f0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8ba0, 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 0xfffffd805e561000, so_type 3, m 0xfffffd805c180400, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821b6c1b) at panic+0x15c soreceive(fffffd805e561000,0,ffff80001d372388,0,0,ffff80001d372294) at soreceive+0x16e7 soo_read(fffffd805eb0d5a0,ffff80001d372388,0) at soo_read+0x53 dofilereadv(ffff80001d339278,6,ffff80001d372388,0,ffff80001d372470) at dofilereadv+0x1a1 sys_read(ffff80001d339278,ffff80001d372420,ffff80001d372470) at sys_read+0x83 syscall(ffff80001d3724f0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8ba0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d3720d0 rbx 0xffff80001d372180 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d372090 r9 0x1 r10 0xf871e9a43cd66d2d r11 0x953e27b2aeefab54 r12 0x3000000008 r13 0xffff80001d3720e0 r14 0x100 r15 0x1 rip 0xffffffff81d56348 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d3720c0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=516144 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d339ea8,0xffff80001d339768 process=0xffff8000ffffa740 user=0xffff80001d36d000, vmspace=0xfffffd806bc0a550 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 97252 43126 11063 0 3 0x82 thrsleep syz-execprog 97252 394990 11063 0 3 0x4000082 thrsleep syz-execprog 97252 19059 11063 0 3 0x4000082 thrsleep syz-execprog 97252 172033 11063 0 3 0x4000082 thrsleep syz-execprog 97252 79115 11063 0 3 0x4000082 wait syz-execprog 97252 495473 11063 0 3 0x4000082 kqread syz-execprog 97252 309585 11063 0 3 0x4000082 thrsleep syz-execprog 11063 125602 30627 0 3 0x10008a pause ksh 30627 60314 8180 0 3 0x92 select sshd 52724 341400 1 0 3 0x100083 ttyin getty 8180 214353 1 0 3 0x80 select sshd 35842 78409 98933 73 3 0x100090 kqread syslogd 98933 301520 1 0 3 0x100082 netio syslogd 22807 115073 1 77 2 0x100010 dhclient *66034 516144 1 0 7 0 dhclient 44064 248948 0 0 3 0x14200 bored smr 82023 504177 0 0 3 0x14200 pgzero zerothread 85631 328313 0 0 3 0x14200 aiodoned aiodoned 35891 250960 0 0 3 0x14200 syncer update 16045 144815 0 0 3 0x14200 cleaner cleaner 38752 367442 0 0 3 0x14200 reaper reaper 95266 236212 0 0 3 0x14200 pgdaemon pagedaemon 95043 244951 0 0 3 0x14200 bored crynlk 73394 216555 0 0 3 0x14200 bored crypto 13938 218524 0 0 3 0x40014200 acpi0 acpi0 23865 199603 0 0 2 0x14200 softnet 90031 120756 0 0 2 0x14200 systqmp 52831 267357 0 0 3 0x14200 bored systq 61946 8771 0 0 3 0x40014200 bored softclock 51985 88671 0 0 3 0x40014200 idle0 1 160175 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 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 70 11K 12K 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 18 3025K 3089K 78643K 1665 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 256 145 0 0 10 0 10 10 0 8 0 art_table 32 146 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 4332 0 4332 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 920 212 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 5525 0 5493 8 2 6 8 0 8 1 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9635 0 9557 10 3 7 7 0 8 0 bufpl 280 3648 0 161 250 0 250 250 0 8 0 anonpl 16 20288 0 18843 15 2 13 13 0 107 7 amapchunkpl 152 699 0 638 5 0 5 5 0 158 2 amappl16 192 130 0 105 2 0 2 2 0 8 0 amappl15 184 3 0 1 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 7 0 5 1 0 1 1 0 8 0 amappl11 152 58 0 46 1 0 1 1 0 8 0 amappl10 144 10 0 6 1 0 1 1 0 8 0 amappl9 136 179 0 177 1 0 1 1 0 8 0 amappl8 128 233 0 226 1 0 1 1 0 8 0 amappl7 120 103 0 93 1 0 1 1 0 8 0 amappl6 112 18 0 17 2 1 1 1 0 8 0 amappl5 104 224 0 213 1 0 1 1 0 8 0 amappl4 96 448 0 420 1 0 1 1 0 8 0 amappl3 88 112 0 105 1 0 1 1 0 8 0 amappl2 80 835 0 783 3 0 3 3 0 8 1 amappl1 72 13538 0 13151 27 7 20 20 0 8 11 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 6016 0 5996 1 0 1 1 0 8 0 vmmpepl 168 28981 0 28148 85 8 77 77 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 103330 0 99666 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 112 131 0 7 4 0 4 4 0 8 0 ddb>