kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Tue Dec 24 21:44:07 PST 2019 OpenBSD/amd64 (ci-openbsd-main-1.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.10.11' (ECDSA) to the list of known hosts. 2019/12/24 21:44:17 parsed 1 programs 2019/12/24 21:44:24 executed programs: 0 login: panic: receive 1a: so 0xfffffd805e4e1600, so_type 3, m 0xfffffd805bfe1200, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *281948 66908 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821982ee) at panic+0x15c soreceive(fffffd805e4e1600,0,ffff80001d37e418,0,0,ffff80001d37e324) at soreceive+0x170a soo_read(fffffd805eaee780,ffff80001d37e418,0) at soo_read+0x53 dofilereadv(ffff8000ffff8c60,6,ffff80001d37e418,0,ffff80001d37e500) at dofilereadv+0x1a2 sys_read(ffff8000ffff8c60,ffff80001d37e4b0,ffff80001d37e500) at sys_read+0x83 syscall(ffff80001d37e580) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff9c80, 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 0xfffffd805e4e1600, so_type 3, m 0xfffffd805bfe1200, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821982ee) at panic+0x15c soreceive(fffffd805e4e1600,0,ffff80001d37e418,0,0,ffff80001d37e324) at soreceive+0x170a soo_read(fffffd805eaee780,ffff80001d37e418,0) at soo_read+0x53 dofilereadv(ffff8000ffff8c60,6,ffff80001d37e418,0,ffff80001d37e500) at dofilereadv+0x1a2 sys_read(ffff8000ffff8c60,ffff80001d37e4b0,ffff80001d37e500) at sys_read+0x83 syscall(ffff80001d37e580) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff9c80, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d37e160 rbx 0xffff80001d37e210 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d37e120 r9 0x1 r10 0x8d138e912be3e5e3 r11 0x470eec1b05546770 r12 0x3000000008 r13 0xffff80001d37e170 r14 0x100 r15 0x1 rip 0xffffffff816f2be8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d37e150 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=281948 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8770,0xffff8000ffff9160 process=0xffff8000ffff6db0 user=0xffff80001d379000, vmspace=0xfffffd806bc0a220 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 61013 283378 65768 0 3 0x82 thrsleep syz-execprog 61013 90053 65768 0 3 0x4000082 nanosleep syz-execprog 61013 115674 65768 0 3 0x4000082 thrsleep syz-execprog 61013 370247 65768 0 3 0x4000082 thrsleep syz-execprog 61013 102237 65768 0 3 0x4000082 wait syz-execprog 61013 193427 65768 0 3 0x4000082 thrsleep syz-execprog 61013 35713 65768 0 3 0x4000082 thrsleep syz-execprog 65768 307732 19945 0 3 0x10008a pause ksh 19945 411976 54947 0 3 0x92 select sshd 19037 23243 1 0 3 0x100083 ttyin getty 54947 221753 1 0 3 0x80 select sshd 27562 119699 53465 73 3 0x100090 kqread syslogd 53465 99451 1 0 3 0x100082 netio syslogd 95673 199220 1 77 2 0x100010 dhclient *66908 281948 1 0 7 0 dhclient 77700 405349 0 0 2 0x14200 zerothread 68709 443553 0 0 3 0x14200 aiodoned aiodoned 94939 435327 0 0 3 0x14200 syncer update 33086 345001 0 0 3 0x14200 cleaner cleaner 79312 47733 0 0 3 0x14200 reaper reaper 34414 145292 0 0 3 0x14200 pgdaemon pagedaemon 93465 388146 0 0 3 0x14200 bored crynlk 57916 41507 0 0 3 0x14200 bored crypto 59872 119057 0 0 3 0x40014200 acpi0 acpi0 10638 184552 0 0 2 0x14200 softnet 72396 341477 0 0 2 0x14200 systqmp 13318 513889 0 0 3 0x14200 bored systq 26551 196738 0 0 3 0x40014200 bored softclock 23393 224832 0 0 3 0x40014200 idle0 67700 222661 0 0 3 0x14200 bored smr 1 174422 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 157 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 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 72 11K 12K 78643K 858 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 21 3001K 3065K 78643K 3058 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 256 168 0 0 11 0 11 11 0 8 0 art_table 32 169 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 4009 0 4009 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 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 424 198 0 186 2 0 2 2 0 8 0 filepl 120 998 0 946 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 872 212 0 186 4 0 4 4 0 8 0 procpl 632 218 0 186 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 5481 0 5452 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9556 0 9478 8 1 7 7 0 8 0 bufpl 280 5846 0 1326 323 0 323 323 0 8 0 anonpl 16 20398 0 18940 14 1 13 13 0 107 6 amapchunkpl 152 762 0 702 5 0 5 5 0 158 2 amappl16 192 88 0 64 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 21 0 18 1 0 1 1 0 8 0 amappl12 160 12 0 8 1 0 1 1 0 8 0 amappl11 152 43 0 32 1 0 1 1 0 8 0 amappl10 144 9 0 9 1 0 1 1 0 8 1 amappl9 136 388 0 386 1 0 1 1 0 8 0 amappl8 128 84 0 75 1 0 1 1 0 8 0 amappl7 120 88 0 78 1 0 1 1 0 8 0 amappl6 112 56 0 51 1 0 1 1 0 8 0 amappl5 104 147 0 137 1 0 1 1 0 8 0 amappl4 96 426 0 403 1 0 1 1 0 8 0 amappl3 88 124 0 117 1 0 1 1 0 8 0 amappl2 80 866 0 806 3 0 3 3 0 8 1 amappl1 72 13749 0 13351 26 8 18 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 6050 0 6035 1 0 1 1 0 8 0 vmmpepl 168 29621 0 28751 82 4 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 103962 0 100261 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 112 123 0 5 4 0 4 4 0 8 0 ddb>