kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Thu Dec 12 02:49:37 PST 2019 OpenBSD/amd64 (ci-openbsd-main-9.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.22' (ECDSA) to the list of known hosts. 2019/12/12 02:49:48 parsed 1 programs 2019/12/12 02:49:55 executed programs: 0 login: panic: receive 3: so 0xfffffd8038c11180, so_type 3, m 0xfffffd8034fe7400, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *446857 93021 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821880dc) at panic+0x15c soreceive(fffffd8038c11180,0,ffff800014896828,0,0,ffff800014896734) at soreceive+0x16e7 soo_read(fffffd80375ca438,ffff800014896828,0) at soo_read+0x53 dofilereadv(ffff8000ffff89e8,6,ffff800014896828,0,ffff800014896910) at dofilereadv+0x1a2 sys_read(ffff8000ffff89e8,ffff8000148968c0,ffff800014896910) at sys_read+0x83 syscall(ffff800014896990) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe780, 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 0xfffffd8038c11180, so_type 3, m 0xfffffd8034fe7400, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821880dc) at panic+0x15c soreceive(fffffd8038c11180,0,ffff800014896828,0,0,ffff800014896734) at soreceive+0x16e7 soo_read(fffffd80375ca438,ffff800014896828,0) at soo_read+0x53 dofilereadv(ffff8000ffff89e8,6,ffff800014896828,0,ffff800014896910) at dofilereadv+0x1a2 sys_read(ffff8000ffff89e8,ffff8000148968c0,ffff800014896910) at sys_read+0x83 syscall(ffff800014896990) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe780, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff800014896570 rbx 0xffff800014896620 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff800014896530 r9 0x1 r10 0x2133a6a827460f60 r11 0xd8eaf088fb969e5c r12 0x3000000008 r13 0xffff800014896580 r14 0x100 r15 0x1 rip 0xffffffff81dc2d98 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800014896560 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=446857 stat=onproc flags process=0 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8ed8,0xffff8000ffff8c70 process=0xffff8000ffff6378 user=0xffff800014891000, vmspace=0xfffffd803f013550 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 5777 464785 51740 0 3 0x82 thrsleep syz-execprog 5777 192750 51740 0 3 0x4000082 nanosleep syz-execprog 5777 499348 51740 0 3 0x4000082 thrsleep syz-execprog 5777 439812 51740 0 3 0x4000082 thrsleep syz-execprog 5777 80800 51740 0 3 0x4000082 wait syz-execprog 5777 319343 51740 0 3 0x4000082 thrsleep syz-execprog 5777 280412 51740 0 3 0x4000082 thrsleep syz-execprog 51740 497132 89410 0 3 0x10008a pause ksh 89410 369487 85833 0 3 0x92 select sshd 77551 457996 1 0 3 0x100083 ttyin getty 85833 226331 1 0 3 0x80 select sshd 71711 233950 68662 73 3 0x100090 kqread syslogd 68662 291898 1 0 3 0x100082 netio syslogd 91860 86556 1 77 2 0x100010 dhclient *93021 446857 1 0 7 0 dhclient 84732 47604 0 0 3 0x14200 pgzero zerothread 53797 423177 0 0 3 0x14200 aiodoned aiodoned 45288 47796 0 0 3 0x14200 syncer update 69723 201431 0 0 3 0x14200 cleaner cleaner 74614 491415 0 0 3 0x14200 reaper reaper 48897 491242 0 0 3 0x14200 pgdaemon pagedaemon 49912 381827 0 0 3 0x14200 bored crynlk 67899 153237 0 0 3 0x14200 bored crypto 81501 56079 0 0 3 0x40014200 acpi0 acpi0 56316 129848 0 0 2 0x14200 softnet 94278 469224 0 0 2 0x14200 systqmp 74414 357313 0 0 3 0x14200 bored systq 56455 20611 0 0 3 0x40014200 bored softclock 18336 497503 0 0 3 0x40014200 idle0 78175 380923 0 0 3 0x14200 bored smr 1 126170 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 6320K 6320K 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 18 79K 79K 78643K 18 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 860 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 22 3001K 3065K 78643K 3059 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 256 167 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 3994 0 3994 2 1 1 2 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 3 0 1 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 120 999 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 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 5475 0 5445 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9546 0 9469 8 1 7 7 0 8 0 bufpl 280 5846 0 1353 321 0 321 321 0 8 0 anonpl 16 20321 0 18852 14 1 13 13 0 62 6 amapchunkpl 152 744 0 685 5 0 5 5 0 158 2 amappl16 192 92 0 68 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 21 0 19 1 0 1 1 0 8 0 amappl13 168 1 0 1 1 1 0 1 0 8 0 amappl12 160 6 0 3 1 0 1 1 0 8 0 amappl11 152 44 0 33 1 0 1 1 0 8 0 amappl10 144 7 0 7 1 0 1 1 0 8 1 amappl9 136 383 0 381 1 0 1 1 0 8 0 amappl8 128 86 0 76 1 0 1 1 0 8 0 amappl7 120 88 0 78 1 0 1 1 0 8 0 amappl6 112 58 0 52 1 0 1 1 0 8 0 amappl5 104 149 0 140 1 0 1 1 0 8 0 amappl4 96 422 0 400 1 0 1 1 0 8 0 amappl3 88 123 0 115 1 0 1 1 0 8 0 amappl2 80 855 0 797 3 0 3 3 0 8 1 amappl1 72 13452 0 13058 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 29377 0 28515 83 5 78 78 0 357 38 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 103393 0 99683 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>