kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Mon Dec 23 22:29:04 PST 2019 OpenBSD/amd64 (ci-openbsd-main-5.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.10.28' (ECDSA) to the list of known hosts. 2019/12/23 22:29:16 parsed 1 programs 2019/12/23 22:29:19 executed programs: 0 login: panic: receive 3: so 0xfffffd805e4dd480, so_type 3, m 0xfffffd805d30a500, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *304088 40837 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff8218ebc1) at panic+0x15c soreceive(fffffd805e4dd480,0,ffff80001d3763e8,0,0,ffff80001d3762f4) at soreceive+0x16e7 soo_read(fffffd8067bf5000,ffff80001d3763e8,0) at soo_read+0x53 dofilereadv(ffff8000ffff84f8,6,ffff80001d3763e8,0,ffff80001d3764d0) at dofilereadv+0x1a2 sys_read(ffff8000ffff84f8,ffff80001d376480,ffff80001d3764d0) at sys_read+0x83 syscall(ffff80001d376550) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffebac0, 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 0xfffffd805e4dd480, so_type 3, m 0xfffffd805d30a500, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff8218ebc1) at panic+0x15c soreceive(fffffd805e4dd480,0,ffff80001d3763e8,0,0,ffff80001d3762f4) at soreceive+0x16e7 soo_read(fffffd8067bf5000,ffff80001d3763e8,0) at soo_read+0x53 dofilereadv(ffff8000ffff84f8,6,ffff80001d3763e8,0,ffff80001d3764d0) at dofilereadv+0x1a2 sys_read(ffff8000ffff84f8,ffff80001d376480,ffff80001d3764d0) at sys_read+0x83 syscall(ffff80001d376550) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffebac0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d376130 rbx 0xffff80001d3761e0 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d3760f0 r9 0x1 r10 0x71e02a0bdb63941d r11 0x20c0f8a616a3665d r12 0x3000000008 r13 0xffff80001d376140 r14 0x100 r15 0x1 rip 0xffffffff820bfbb8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d376120 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=304088 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff9150,0xffff8000ffff89f8 process=0xffff8000ffff6010 user=0xffff80001d371000, vmspace=0xfffffd806bc11110 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 43296 477176 25426 0 3 0x82 thrsleep syz-execprog 43296 462131 25426 0 3 0x4000082 nanosleep syz-execprog 43296 291413 25426 0 3 0x4000082 thrsleep syz-execprog 43296 6405 25426 0 3 0x4000082 thrsleep syz-execprog 43296 118672 25426 0 3 0x4000082 wait syz-execprog 43296 212552 25426 0 3 0x4000082 thrsleep syz-execprog 43296 44912 25426 0 3 0x4000082 thrsleep syz-execprog 25426 432048 49855 0 3 0x10008a pause ksh 49855 428802 95567 0 3 0x92 select sshd 87803 369943 1 0 3 0x100083 ttyin getty 95567 300910 1 0 3 0x80 select sshd 36461 214206 42242 73 3 0x100090 kqread syslogd 42242 51781 1 0 3 0x100082 netio syslogd 73734 458426 1 77 2 0x100010 dhclient *40837 304088 1 0 7 0 dhclient 13928 316267 0 0 3 0x14200 pgzero zerothread 93605 126632 0 0 3 0x14200 aiodoned aiodoned 76472 278205 0 0 3 0x14200 syncer update 72024 91915 0 0 3 0x14200 cleaner cleaner 95401 93110 0 0 3 0x14200 reaper reaper 20203 282885 0 0 3 0x14200 pgdaemon pagedaemon 16313 65943 0 0 3 0x14200 bored crynlk 15835 45989 0 0 3 0x14200 bored crypto 80114 332173 0 0 3 0x40014200 acpi0 acpi0 71297 44022 0 0 2 0x14200 softnet 7065 187767 0 0 2 0x14200 systqmp 62321 413545 0 0 3 0x14200 bored systq 25252 34979 0 0 2 0x40014200 softclock 42746 318146 0 0 3 0x40014200 idle0 5650 26391 0 0 3 0x14200 bored smr 1 324053 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 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 75 11K 12K 78643K 861 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 3017K 3081K 78643K 3057 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 3999 0 3999 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 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 120 998 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 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 5483 0 5451 7 2 5 7 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9526 0 9444 8 1 7 7 0 8 0 bufpl 280 5846 0 1326 323 0 323 323 0 8 0 anonpl 16 20259 0 18794 14 1 13 13 0 107 6 amapchunkpl 152 740 0 681 5 0 5 5 0 158 2 amappl16 192 76 0 53 2 0 2 2 0 8 0 amappl15 184 51 0 46 1 0 1 1 0 8 0 amappl14 176 25 0 21 1 0 1 1 0 8 0 amappl13 168 1 0 1 1 0 1 1 0 8 1 amappl12 160 5 0 3 1 0 1 1 0 8 0 amappl11 152 43 0 32 1 0 1 1 0 8 0 amappl10 144 9 0 8 1 0 1 1 0 8 0 amappl9 136 390 0 387 1 0 1 1 0 8 0 amappl8 128 85 0 74 1 0 1 1 0 8 0 amappl7 120 86 0 77 1 0 1 1 0 8 0 amappl6 112 58 0 54 1 0 1 1 0 8 0 amappl5 104 146 0 135 1 0 1 1 0 8 0 amappl4 96 425 0 400 1 0 1 1 0 8 0 amappl3 88 126 0 118 1 0 1 1 0 8 0 amappl2 80 849 0 790 3 0 3 3 0 8 1 amappl1 72 13435 0 13033 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 6051 0 6036 1 0 1 1 0 8 0 vmmpepl 168 29641 0 28766 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 103490 0 99777 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 112 124 0 5 4 0 4 4 0 8 0 ddb>