kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Wed Feb 12 02:03:31 PST 2020 OpenBSD/amd64 (ci-openbsd-main-2.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.230' (ECDSA) to the list of known hosts. 2020/02/12 02:03:41 parsed 1 programs 2020/02/12 02:03:49 executed programs: 0 login: panic: receive 1a: so 0xfffffd805e557320, so_type 3, m 0xfffffd805a084600, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *467213 7992 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff8219c408) at panic+0x15c soreceive(fffffd805e557320,0,ffff80001d382d48,0,0,ffff80001d382c54) at soreceive+0x170a soo_read(fffffd8061ffc438,ffff80001d382d48,0) at soo_read+0x53 dofilereadv(ffff80001d349278,6,ffff80001d382d48,0,ffff80001d382e30) at dofilereadv+0x1a1 sys_read(ffff80001d349278,ffff80001d382de0,ffff80001d382e30) at sys_read+0x83 syscall(ffff80001d382eb0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc43a0, 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 0xfffffd805e557320, so_type 3, m 0xfffffd805a084600, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff8219c408) at panic+0x15c soreceive(fffffd805e557320,0,ffff80001d382d48,0,0,ffff80001d382c54) at soreceive+0x170a soo_read(fffffd8061ffc438,ffff80001d382d48,0) at soo_read+0x53 dofilereadv(ffff80001d349278,6,ffff80001d382d48,0,ffff80001d382e30) at dofilereadv+0x1a1 sys_read(ffff80001d349278,ffff80001d382de0,ffff80001d382e30) at sys_read+0x83 syscall(ffff80001d382eb0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc43a0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d382a90 rbx 0xffff80001d382b40 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d382a50 r9 0x1 r10 0x3d7a9be23fa3f625 r11 0x7e5cbc97302a6b0e r12 0x3000000008 r13 0xffff80001d382aa0 r14 0x100 r15 0x1 rip 0xffffffff81e49f98 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d382a80 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=467213 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d34a118,0xffff80001d349018 process=0xffff8000ffffa390 user=0xffff80001d37d000, vmspace=0xfffffd806bc0a770 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 43559 263031 54877 0 3 0x82 thrsleep syz-execprog 43559 93881 54877 0 3 0x4000082 thrsleep syz-execprog 43559 449982 54877 0 3 0x4000082 thrsleep syz-execprog 43559 208525 54877 0 3 0x4000082 thrsleep syz-execprog 43559 499778 54877 0 3 0x4000082 wait syz-execprog 43559 422626 54877 0 3 0x4000082 kqread syz-execprog 43559 515009 54877 0 3 0x4000082 thrsleep syz-execprog 54877 235042 77278 0 3 0x10008a pause ksh 77278 416169 94151 0 3 0x92 select sshd 69415 324987 1 0 3 0x100083 ttyin getty 94151 283104 1 0 3 0x80 select sshd 27567 331928 50912 73 3 0x100090 kqread syslogd 50912 321892 1 0 3 0x100082 netio syslogd 68712 273502 1 77 2 0x100010 dhclient * 7992 467213 1 0 7 0 dhclient 5945 318942 0 0 3 0x14200 pgzero zerothread 41740 254956 0 0 3 0x14200 aiodoned aiodoned 65483 502136 0 0 3 0x14200 syncer update 64715 279859 0 0 3 0x14200 cleaner cleaner 60747 409473 0 0 3 0x14200 reaper reaper 43796 382552 0 0 3 0x14200 pgdaemon pagedaemon 93472 416430 0 0 3 0x14200 bored crynlk 61269 400129 0 0 3 0x14200 bored crypto 39994 286732 0 0 3 0x40014200 acpi0 acpi0 93151 125406 0 0 2 0x14200 softnet 93461 439381 0 0 2 0x14200 systqmp 1581 296539 0 0 3 0x14200 bored systq 6775 410611 0 0 3 0x40014200 bored softclock 75396 359287 0 0 3 0x40014200 idle0 74983 258711 0 0 3 0x14200 bored smr 1 285387 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 74 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 1690 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 1 0 1 0 8 0 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 4354 0 4354 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 624 218 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 1 0 1 0 8 0 mcl2k 2048 5498 0 5470 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9538 0 9462 7 0 7 7 0 8 0 bufpl 280 3712 0 178 253 0 253 253 0 8 0 anonpl 16 20450 0 18983 14 1 13 13 0 107 6 amapchunkpl 152 714 0 653 5 0 5 5 0 158 2 amappl16 192 77 0 53 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 22 0 19 1 0 1 1 0 8 0 amappl13 168 1 0 0 1 0 1 1 0 8 0 amappl12 160 18 0 15 1 0 1 1 0 8 0 amappl11 152 44 0 33 1 0 1 1 0 8 0 amappl10 144 7 0 6 1 0 1 1 0 8 0 amappl9 136 386 0 384 1 0 1 1 0 8 0 amappl8 128 84 0 75 1 0 1 1 0 8 0 amappl7 120 87 0 77 1 0 1 1 0 8 0 amappl6 112 58 0 54 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 88 123 0 116 1 0 1 1 0 8 0 amappl2 80 851 0 792 3 0 3 3 0 8 1 amappl1 72 13480 0 13082 26 8 18 20 0 8 8 amappl 80 418 0 393 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 6036 0 6016 1 0 1 1 0 8 0 vmmpepl 168 29514 0 28646 82 4 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 103765 0 100035 114 0 114 114 0 265 83 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 112 127 0 5 4 0 4 4 0 8 0 ddb>