kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Thu Jul 16 09:07:26 PDT 2020 OpenBSD/amd64 (ci-openbsd-main-2.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.8' (ECDSA) to the list of known hosts. 2020/07/16 09:07:52 parsed 1 programs 2020/07/16 09:07:55 executed programs: 0 login: panic: receive 1a: so 0xfffffd805e504190, so_type 3, m 0xfffffd805a5a6e00, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *230402 34112 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff823caf25) at panic+0x15c soreceive(fffffd805e504190,0,ffff80001d6e5c28,0,0,ffff80001d6e5b34) at soreceive+0x170a soo_read(fffffd805eab85a0,ffff80001d6e5c28,0) at soo_read+0x53 dofilereadv(ffff80001d6a99c8,6,ffff80001d6e5c28,0,ffff80001d6e5d10) at dofilereadv+0x1a1 sys_read(ffff80001d6a99c8,ffff80001d6e5cc0,ffff80001d6e5d10) at sys_read+0x83 syscall(ffff80001d6e5d90) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe19a0, 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 0xfffffd805e504190, so_type 3, m 0xfffffd805a5a6e00, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff823caf25) at panic+0x15c soreceive(fffffd805e504190,0,ffff80001d6e5c28,0,0,ffff80001d6e5b34) at soreceive+0x170a soo_read(fffffd805eab85a0,ffff80001d6e5c28,0) at soo_read+0x53 dofilereadv(ffff80001d6a99c8,6,ffff80001d6e5c28,0,ffff80001d6e5d10) at dofilereadv+0x1a1 sys_read(ffff80001d6a99c8,ffff80001d6e5cc0,ffff80001d6e5d10) at sys_read+0x83 syscall(ffff80001d6e5d90) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe19a0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d6e5970 rbx 0xffff80001d6e5a20 rdx 0x2 rcx 0 rax 0x1 r8 0xffffffff8140a10f kprintf+0x15f r9 0x1 r10 0x2 r11 0x1309f22efd13ce57 r12 0x3000000008 r13 0xffff80001d6e5980 r14 0x100 r15 0x1 rip 0xffffffff814764a8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d6e5960 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=230402 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6aa388,0xffff80001d6a9c48 process=0xffff80001d6c4750 user=0xffff80001d6e0000, vmspace=0xfffffd806bc0a220 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 14797 102033 23004 0 3 0x82 thrsleep syz-execprog 14797 48592 23004 0 3 0x4000082 thrsleep syz-execprog 14797 63268 23004 0 3 0x4000082 thrsleep syz-execprog 14797 108107 23004 0 3 0x4000082 thrsleep syz-execprog 14797 363395 23004 0 3 0x4000082 wait syz-execprog 14797 89469 23004 0 3 0x4000082 kqread syz-execprog 14797 154112 23004 0 3 0x4000082 thrsleep syz-execprog 23004 216626 40563 0 3 0x10008a pause ksh 40563 242402 45189 0 3 0x92 select sshd 40779 495162 1 0 3 0x100083 ttyin getty 45189 72178 1 0 3 0x80 select sshd 82162 45394 66336 73 3 0x100090 kqread syslogd 66336 276640 1 0 3 0x100082 netio syslogd 49633 322512 1 77 2 0x100010 dhclient *34112 230402 1 0 7 0 dhclient 21823 227541 0 0 3 0x14200 bored smr 14922 65246 0 0 3 0x14200 pgzero zerothread 82362 26464 0 0 3 0x14200 aiodoned aiodoned 44173 278369 0 0 3 0x14200 syncer update 32046 276246 0 0 3 0x14200 cleaner cleaner 98704 357001 0 0 3 0x14200 reaper reaper 45353 286047 0 0 3 0x14200 pgdaemon pagedaemon 72331 405045 0 0 3 0x14200 bored crynlk 79005 422749 0 0 3 0x14200 bored crypto 19550 369239 0 0 3 0x40014200 acpi0 acpi0 32012 485921 0 0 2 0x14200 softnet 19300 499635 0 0 2 0x14200 systqmp 22675 371272 0 0 3 0x14200 bored systq 89447 22499 0 0 3 0x40014200 bored softclock 43812 451135 0 0 3 0x40014200 idle0 1 407108 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 9442 6320K 6320K 78643K 10543 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 1809 195K 288K 78643K 12938 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 67 11K 12K 78643K 866 0 UVM aobj 3 2K 2K 78643K 3 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 3845K 3909K 78643K 1629 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 2 1 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 296 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 dino2pl 256 1415 0 22 88 0 88 88 0 8 0 ffsino 240 1415 0 22 82 0 82 82 0 8 0 nchpl 144 1634 0 39 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 3941 0 3941 2 1 1 1 0 8 1 scxspl 192 4454 0 4454 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 47 0 38 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipepl 272 70 0 64 2 1 1 1 0 8 0 fdescpl 432 198 0 186 2 0 2 2 0 8 0 filepl 120 980 0 929 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 57 0 50 1 0 1 1 0 8 0 zombiepl 144 187 0 186 2 1 1 1 0 8 0 processpl 928 212 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 5559 0 5524 8 3 5 8 0 8 0 mtagpl 96 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9684 0 9601 8 1 7 7 0 8 0 bufpl 280 2961 0 125 203 0 203 203 0 8 0 anonpl 16 22409 0 20923 14 2 12 12 0 107 4 amapchunkpl 152 873 0 813 5 1 4 4 0 158 1 amappl16 192 120 0 93 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 35 0 30 1 0 1 1 0 8 0 amappl13 168 20 0 18 2 1 1 1 0 8 0 amappl12 160 12 0 9 2 1 1 1 0 8 0 amappl11 152 46 0 36 1 0 1 1 0 8 0 amappl10 144 11 0 8 1 0 1 1 0 8 0 amappl9 136 211 0 209 1 0 1 1 0 8 0 amappl8 128 232 0 226 1 0 1 1 0 8 0 amappl7 120 103 0 91 1 0 1 1 0 8 0 amappl6 112 22 0 20 2 1 1 1 0 8 0 amappl5 104 156 0 147 1 0 1 1 0 8 0 amappl4 96 428 0 405 1 0 1 1 0 8 0 amappl3 88 107 0 101 1 0 1 1 0 8 0 amappl2 80 810 0 757 3 1 2 2 0 8 0 amappl1 72 13561 0 13167 24 7 17 17 0 8 8 amappl 80 446 0 421 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 2 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 6070 0 6048 2 0 2 2 0 8 0 vmmpepl 168 29531 0 28680 82 13 69 69 0 357 30 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 106789 0 103076 108 6 102 102 0 265 70 pmappl 200 197 0 186 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 220 0 9 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff823caf25) at panic+0x15c soreceive(fffffd805e504190,0,ffff80001d6e5c28,0,0,ffff80001d6e5b34) at soreceive+0x170a soo_read(fffffd805eab85a0,ffff80001d6e5c28,0) at soo_read+0x53 dofilereadv(ffff80001d6a99c8,6,ffff80001d6e5c28,0,ffff80001d6e5d10) at dofilereadv+0x1a1 sys_read(ffff80001d6a99c8,ffff80001d6e5cc0,ffff80001d6e5d10) at sys_read+0x83 syscall(ffff80001d6e5d90) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe19a0, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff823caf25) at panic+0x15c soreceive(fffffd805e504190,0,ffff80001d6e5c28,0,0,ffff80001d6e5b34) at soreceive+0x170a soo_read(fffffd805eab85a0,ffff80001d6e5c28,0) at soo_read+0x53 dofilereadv(ffff80001d6a99c8,6,ffff80001d6e5c28,0,ffff80001d6e5d10) at dofilereadv+0x1a1 sys_read(ffff80001d6a99c8,ffff80001d6e5cc0,ffff80001d6e5d10) at sys_read+0x83 syscall(ffff80001d6e5d90) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe19a0, count: -8 ddb>