kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Mon Jan 20 22:48:07 PST 2020 OpenBSD/amd64 (ci-openbsd-main-2.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.11' (ECDSA) to the list of known hosts. 2020/01/20 22:48:19 parsed 1 programs 2020/01/20 22:48:26 executed programs: 0 login: panic: receive 3: so 0xfffffd805e4dc320, so_type 3, m 0xfffffd805c6c3500, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 27301 10527 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff8218e99b) at panic+0x15c soreceive(fffffd805e4dc320,0,ffff80001d37e648,0,0,ffff80001d37e554) at soreceive+0x16e7 soo_read(fffffd8068dce618,ffff80001d37e648,0) at soo_read+0x53 dofilereadv(ffff8000ffff8008,6,ffff80001d37e648,0,ffff80001d37e730) at dofilereadv+0x1a2 sys_read(ffff8000ffff8008,ffff80001d37e6e0,ffff80001d37e730) at sys_read+0x83 syscall(ffff80001d37e7b0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda510, 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 0xfffffd805e4dc320, so_type 3, m 0xfffffd805c6c3500, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff8218e99b) at panic+0x15c soreceive(fffffd805e4dc320,0,ffff80001d37e648,0,0,ffff80001d37e554) at soreceive+0x16e7 soo_read(fffffd8068dce618,ffff80001d37e648,0) at soo_read+0x53 dofilereadv(ffff8000ffff8008,6,ffff80001d37e648,0,ffff80001d37e730) at dofilereadv+0x1a2 sys_read(ffff8000ffff8008,ffff80001d37e6e0,ffff80001d37e730) at sys_read+0x83 syscall(ffff80001d37e7b0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda510, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d37e390 rbx 0xffff80001d37e440 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d37e350 r9 0x1 r10 0x24b32f6ec20811ce r11 0xa79f49bcc2097ba1 r12 0x3000000008 r13 0xffff80001d37e3a0 r14 0x100 r15 0x1 rip 0xffffffff81baf908 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d37e380 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=27301 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff9150,0xffff8000ffff8290 process=0xffff8000ffff6d90 user=0xffff80001d379000, vmspace=0xfffffd806bc0a770 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 85589 136818 67368 0 3 0x82 thrsleep syz-execprog 85589 281648 67368 0 3 0x4000082 nanosleep syz-execprog 85589 260404 67368 0 3 0x4000082 thrsleep syz-execprog 85589 393856 67368 0 3 0x4000082 thrsleep syz-execprog 85589 49867 67368 0 3 0x4000082 thrsleep syz-execprog 85589 19840 67368 0 3 0x4000082 wait syz-execprog 85589 232453 67368 0 3 0x4000082 thrsleep syz-execprog 67368 223144 65772 0 3 0x10008a pause ksh 65772 158774 62690 0 3 0x92 select sshd 49036 463635 1 0 3 0x100083 ttyin getty 62690 418424 1 0 3 0x80 select sshd 28933 14538 20636 73 3 0x100090 kqread syslogd 20636 56148 1 0 3 0x100082 netio syslogd 14754 198606 1 77 2 0x100010 dhclient *10527 27301 1 0 7 0 dhclient 62830 247908 0 0 3 0x14200 pgzero zerothread 52906 129841 0 0 3 0x14200 aiodoned aiodoned 71239 419472 0 0 3 0x14200 syncer update 52127 394426 0 0 3 0x14200 cleaner cleaner 27941 119068 0 0 3 0x14200 reaper reaper 88686 69838 0 0 3 0x14200 pgdaemon pagedaemon 69553 37398 0 0 3 0x14200 bored crynlk 23409 360057 0 0 3 0x14200 bored crypto 73113 362523 0 0 3 0x40014200 acpi0 acpi0 84774 434660 0 0 2 0x14200 softnet 46109 168590 0 0 2 0x14200 systqmp 77346 309999 0 0 3 0x14200 bored systq 25238 99000 0 0 3 0x40014200 bored softclock 26093 275640 0 0 3 0x40014200 idle0 86941 247264 0 0 3 0x14200 bored smr 1 434526 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 73 11K 12K 78643K 867 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 2997K 3061K 78643K 3054 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 256 168 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 4006 0 4006 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 pipelkpl 16 67 0 60 1 0 1 1 0 8 0 pipepl 120 134 0 122 1 0 1 1 0 8 0 fdescpl 432 198 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 864 212 0 186 4 0 4 4 0 8 0 procpl 632 218 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 5505 0 5476 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9589 0 9513 8 1 7 7 0 8 0 bufpl 280 5849 0 1326 324 0 324 324 0 8 0 anonpl 16 20370 0 18904 14 1 13 13 0 107 6 amapchunkpl 152 651 0 590 5 0 5 5 0 158 1 amappl16 192 99 0 75 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 23 0 19 1 0 1 1 0 8 0 amappl13 168 1 0 1 1 0 1 1 0 8 1 amappl12 160 4 0 2 1 0 1 1 0 8 0 amappl11 152 45 0 34 1 0 1 1 0 8 0 amappl10 144 12 0 11 1 0 1 1 0 8 0 amappl9 136 374 0 372 1 0 1 1 0 8 0 amappl8 128 86 0 77 1 0 1 1 0 8 0 amappl7 120 87 0 78 1 0 1 1 0 8 0 amappl6 112 57 0 51 1 0 1 1 0 8 0 amappl5 104 171 0 161 1 0 1 1 0 8 0 amappl4 96 424 0 401 1 0 1 1 0 8 0 amappl3 88 124 0 116 1 0 1 1 0 8 0 amappl2 80 809 0 751 3 0 3 3 0 8 1 amappl1 72 13753 0 13353 26 8 18 20 0 8 8 amappl 80 421 0 396 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 6059 0 6044 1 0 1 1 0 8 0 vmmpepl 168 29545 0 28674 85 7 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 103819 0 100087 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 112 125 0 5 4 0 4 4 0 8 0 ddb>