kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sun Jan 26 11:39:14 PST 2020 OpenBSD/amd64 (ci-openbsd-main-2.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.114' (ECDSA) to the list of known hosts. 2020/01/26 11:39:51 parsed 1 programs 2020/01/26 11:39:57 executed programs: 0 login: panic: receive 3: so 0xfffffd805e54a4b0, so_type 3, m 0xfffffd805a735300, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *419105 44038 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff82194508) at panic+0x15c soreceive(fffffd805e54a4b0,0,ffff80001d3822e8,0,0,ffff80001d3821f4) at soreceive+0x16e7 soo_read(fffffd805f1fe7f8,ffff80001d3822e8,0) at soo_read+0x53 dofilereadv(ffff80001d349c38,6,ffff80001d3822e8,0,ffff80001d3823d0) at dofilereadv+0x1a2 sys_read(ffff80001d349c38,ffff80001d382380,ffff80001d3823d0) at sys_read+0x83 syscall(ffff80001d382450) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc3b0, 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 0xfffffd805e54a4b0, so_type 3, m 0xfffffd805a735300, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff82194508) at panic+0x15c soreceive(fffffd805e54a4b0,0,ffff80001d3822e8,0,0,ffff80001d3821f4) at soreceive+0x16e7 soo_read(fffffd805f1fe7f8,ffff80001d3822e8,0) at soo_read+0x53 dofilereadv(ffff80001d349c38,6,ffff80001d3822e8,0,ffff80001d3823d0) at dofilereadv+0x1a2 sys_read(ffff80001d349c38,ffff80001d382380,ffff80001d3823d0) at sys_read+0x83 syscall(ffff80001d382450) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc3b0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d382030 rbx 0xffff80001d3820e0 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d381ff0 r9 0x1 r10 0xc8f5772db3e1cae r11 0xce66b8f042b4e2de r12 0x3000000008 r13 0xffff80001d382040 r14 0x100 r15 0x1 rip 0xffffffff81089e98 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d382020 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=419105 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d3499c8,0xffff80001d349eb8 process=0xffff8000ffffa390 user=0xffff80001d37d000, 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 61583 461242 12632 0 3 0x82 thrsleep syz-execprog 61583 69442 12632 0 3 0x4000082 thrsleep syz-execprog 61583 94820 12632 0 3 0x4000082 thrsleep syz-execprog 61583 352881 12632 0 3 0x4000082 thrsleep syz-execprog 61583 438712 12632 0 3 0x4000082 wait syz-execprog 61583 270128 12632 0 3 0x4000082 kqread syz-execprog 61583 260814 12632 0 3 0x4000082 thrsleep syz-execprog 12632 175198 42853 0 3 0x10008a pause ksh 42853 445181 88071 0 3 0x92 select sshd 91251 423243 1 0 3 0x100083 ttyin getty 88071 343230 1 0 3 0x80 select sshd 61868 504204 46543 73 3 0x100090 kqread syslogd 46543 397253 1 0 3 0x100082 netio syslogd 3975 247153 1 77 2 0x100010 dhclient *44038 419105 1 0 7 0 dhclient 44688 91343 0 0 3 0x14200 pgzero zerothread 81050 205055 0 0 3 0x14200 aiodoned aiodoned 59260 477994 0 0 3 0x14200 syncer update 33007 500808 0 0 3 0x14200 cleaner cleaner 81299 149162 0 0 3 0x14200 reaper reaper 77953 392639 0 0 3 0x14200 pgdaemon pagedaemon 71101 267495 0 0 3 0x14200 bored crynlk 90296 392365 0 0 3 0x14200 bored crypto 19374 289579 0 0 3 0x40014200 acpi0 acpi0 66222 397120 0 0 2 0x14200 softnet 72294 498589 0 0 2 0x14200 systqmp 59395 182973 0 0 3 0x14200 bored systq 39920 49392 0 0 3 0x40014200 bored softclock 1497 369286 0 0 3 0x40014200 idle0 12052 324297 0 0 3 0x14200 bored smr 1 364768 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 156 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 75 11K 12K 78643K 870 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 1691 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 2 1 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 2 1 1 1 0 8 1 scxspl 192 4512 0 4512 2 1 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 2 1 1 1 0 8 0 pipepl 120 134 0 123 2 1 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 2 1 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 2 1 1 1 0 8 1 mcl2k 2048 5503 0 5472 7 2 5 7 0 8 1 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9605 0 9530 10 3 7 7 0 8 0 bufpl 280 3712 0 179 253 0 253 253 0 8 0 anonpl 16 21034 0 19569 15 2 13 13 0 107 6 amapchunkpl 152 792 0 731 5 0 5 5 0 158 1 amappl16 192 76 0 53 2 0 2 2 0 8 0 amappl15 184 52 0 47 1 0 1 1 0 8 0 amappl14 176 25 0 21 2 1 1 1 0 8 0 amappl13 168 1 0 0 1 0 1 1 0 8 0 amappl12 160 5 0 3 2 1 1 1 0 8 0 amappl11 152 43 0 32 1 0 1 1 0 8 0 amappl10 144 11 0 9 2 1 1 1 0 8 0 amappl9 136 392 0 390 1 0 1 1 0 8 0 amappl8 128 83 0 73 1 0 1 1 0 8 0 amappl7 120 86 0 76 1 0 1 1 0 8 0 amappl6 112 57 0 53 1 0 1 1 0 8 0 amappl5 104 135 0 126 1 0 1 1 0 8 0 amappl4 96 426 0 402 1 0 1 1 0 8 0 amappl3 88 124 0 116 1 0 1 1 0 8 0 amappl2 80 859 0 799 4 1 3 3 0 8 1 amappl1 72 13825 0 13429 26 8 18 20 0 8 8 amappl 80 432 0 407 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 6045 0 6025 1 0 1 1 0 8 0 vmmpepl 168 29672 0 28802 96 18 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 104771 0 101043 118 5 113 113 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 112 133 0 9 4 0 4 4 0 8 0 ddb>