kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sat Feb 8 06:41:05 PST 2020 OpenBSD/amd64 (ci-openbsd-main-3.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.198' (ECDSA) to the list of known hosts. 2020/02/08 06:41:21 parsed 1 programs 2020/02/08 06:41:24 executed programs: 0 login: panic: receive 3: so 0xfffffd805e552640, so_type 3, m 0xfffffd806bc22800, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 10283 7781 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff8219458c) at panic+0x15c soreceive(fffffd805e552640,0,ffff80001d382888,0,0,ffff80001d382794) at soreceive+0x16e7 soo_read(fffffd8064dfc258,ffff80001d382888,0) at soo_read+0x53 dofilereadv(ffff80001d349278,6,ffff80001d382888,0,ffff80001d382970) at dofilereadv+0x1a1 sys_read(ffff80001d349278,ffff80001d382920,ffff80001d382970) at sys_read+0x83 syscall(ffff80001d3829f0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0680, 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 0xfffffd805e552640, so_type 3, m 0xfffffd806bc22800, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff8219458c) at panic+0x15c soreceive(fffffd805e552640,0,ffff80001d382888,0,0,ffff80001d382794) at soreceive+0x16e7 soo_read(fffffd8064dfc258,ffff80001d382888,0) at soo_read+0x53 dofilereadv(ffff80001d349278,6,ffff80001d382888,0,ffff80001d382970) at dofilereadv+0x1a1 sys_read(ffff80001d349278,ffff80001d382920,ffff80001d382970) at sys_read+0x83 syscall(ffff80001d3829f0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0680, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d3825d0 rbx 0xffff80001d382680 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d382590 r9 0x1 r10 0x61bac1a153e44cc4 r11 0xaa6cf04e7af9607 r12 0x3000000008 r13 0xffff80001d3825e0 r14 0x100 r15 0x1 rip 0xffffffff81008d68 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d3825c0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=10283 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d349c38,0xffff80001d349eb8 process=0xffff8000ffffae10 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 53673 205322 67178 0 3 0x82 wait syz-execprog 53673 453204 67178 0 3 0x4000082 thrsleep syz-execprog 53673 95299 67178 0 3 0x4000082 thrsleep syz-execprog 53673 132199 67178 0 3 0x4000082 thrsleep syz-execprog 53673 382099 67178 0 3 0x4000082 thrsleep syz-execprog 53673 120745 67178 0 3 0x4000082 kqread syz-execprog 53673 23899 67178 0 3 0x4000082 thrsleep syz-execprog 53673 370540 67178 0 3 0x4000082 thrsleep syz-execprog 67178 119153 26515 0 3 0x10008a pause ksh 26515 472764 98145 0 3 0x92 select sshd 50700 190575 1 0 3 0x100083 ttyin getty 98145 334794 1 0 3 0x80 select sshd 65979 388455 45628 73 3 0x100090 kqread syslogd 45628 509448 1 0 3 0x100082 netio syslogd 75996 459330 1 77 2 0x100010 dhclient * 7781 10283 1 0 7 0 dhclient 60597 481495 0 0 3 0x14200 pgzero zerothread 33227 383248 0 0 3 0x14200 aiodoned aiodoned 55784 343595 0 0 3 0x14200 syncer update 67129 246912 0 0 3 0x14200 cleaner cleaner 82402 501701 0 0 3 0x14200 reaper reaper 93893 309432 0 0 3 0x14200 pgdaemon pagedaemon 78543 117266 0 0 3 0x14200 bored crynlk 65395 44590 0 0 3 0x14200 bored crypto 91290 155960 0 0 3 0x40014200 acpi0 acpi0 96883 121492 0 0 2 0x14200 softnet 9019 401806 0 0 2 0x14200 systqmp 2416 273278 0 0 3 0x14200 bored systq 58872 197747 0 0 3 0x40014200 bored softclock 13754 135964 0 0 3 0x40014200 idle0 4121 154416 0 0 3 0x14200 bored smr 1 420143 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 76 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 18 3001K 3065K 78643K 1692 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 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 256 167 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 1 0 1 1 0 8 1 scxspl 192 4357 0 4357 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 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 120 998 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 1 0 1 1 0 8 0 processpl 896 212 0 186 4 0 4 4 0 8 0 procpl 624 219 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 5503 0 5470 8 2 6 8 0 8 1 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9567 0 9490 9 2 7 7 0 8 0 bufpl 280 3717 0 180 253 0 253 253 0 8 0 anonpl 16 20275 0 18804 15 2 13 13 0 107 6 amapchunkpl 152 770 0 709 5 0 5 5 0 158 2 amappl16 192 71 0 48 2 0 2 2 0 8 0 amappl15 184 53 0 47 1 0 1 1 0 8 0 amappl14 176 21 0 18 1 0 1 1 0 8 0 amappl12 160 12 0 7 1 0 1 1 0 8 0 amappl11 152 44 0 33 1 0 1 1 0 8 0 amappl10 144 9 0 8 1 0 1 1 0 8 0 amappl9 136 386 0 384 1 0 1 1 0 8 0 amappl8 128 82 0 73 1 0 1 1 0 8 0 amappl7 120 96 0 85 1 0 1 1 0 8 0 amappl6 112 58 0 54 1 0 1 1 0 8 0 amappl5 104 146 0 137 1 0 1 1 0 8 0 amappl4 96 423 0 401 1 0 1 1 0 8 0 amappl3 88 124 0 116 1 0 1 1 0 8 0 amappl2 80 840 0 783 3 0 3 3 0 8 1 amappl1 72 13481 0 13080 27 10 17 20 0 8 8 amappl 80 417 0 392 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 6046 0 6026 1 0 1 1 0 8 0 vmmpepl 168 29513 0 28641 88 10 78 78 0 357 39 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 103695 0 99955 114 0 114 114 0 265 82 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 6 4 0 4 4 0 8 0 ddb>