kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Feb 28 23:18:00 PST 2020 OpenBSD/amd64 (ci-openbsd-main-4.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.34' (ECDSA) to the list of known hosts. 2020/02/28 23:18:15 parsed 1 programs 2020/02/28 23:18:20 executed programs: 0 login: panic: receive 3: so 0xfffffd805e566190, so_type 3, m 0xfffffd805c000000, m_type 3977 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *213477 88468 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821ac3eb) at panic+0x15c soreceive(fffffd805e566190,0,ffff80001d372198,0,0,ffff80001d3720a4) at soreceive+0x16e7 soo_read(fffffd805eb12960,ffff80001d372198,0) at soo_read+0x53 dofilereadv(ffff80001d3394e8,6,ffff80001d372198,0,ffff80001d372280) at dofilereadv+0x1a1 sys_read(ffff80001d3394e8,ffff80001d372230,ffff80001d372280) at sys_read+0x83 syscall(ffff80001d372300) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc2c40, 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 0xfffffd805e566190, so_type 3, m 0xfffffd805c000000, m_type 3977 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821ac3eb) at panic+0x15c soreceive(fffffd805e566190,0,ffff80001d372198,0,0,ffff80001d3720a4) at soreceive+0x16e7 soo_read(fffffd805eb12960,ffff80001d372198,0) at soo_read+0x53 dofilereadv(ffff80001d3394e8,6,ffff80001d372198,0,ffff80001d372280) at dofilereadv+0x1a1 sys_read(ffff80001d3394e8,ffff80001d372230,ffff80001d372280) at sys_read+0x83 syscall(ffff80001d372300) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc2c40, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d371ee0 rbx 0xffff80001d371f90 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d371ea0 r9 0x1 r10 0x748cbad8060a9cc6 r11 0x72743fdc64611c7f r12 0x3000000008 r13 0xffff80001d371ef0 r14 0x100 r15 0x1 rip 0xffffffff81dfb598 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d371ed0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=213477 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d33a118,0xffff80001d339768 process=0xffff8000ffffa710 user=0xffff80001d36d000, vmspace=0xfffffd806bc0a330 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 34839 105575 48305 0 3 0x82 wait syz-execprog 34839 187246 48305 0 3 0x4000082 thrsleep syz-execprog 34839 157983 48305 0 3 0x4000082 thrsleep syz-execprog 34839 293251 48305 0 3 0x4000082 thrsleep syz-execprog 34839 196334 48305 0 3 0x4000082 thrsleep syz-execprog 34839 426452 48305 0 3 0x4000082 kqread syz-execprog 34839 71497 48305 0 3 0x4000082 thrsleep syz-execprog 48305 357317 98669 0 3 0x10008a pause ksh 98669 260617 73592 0 3 0x92 select sshd 3252 23714 1 0 3 0x100083 ttyin getty 73592 217462 1 0 3 0x80 select sshd 15432 507422 52657 73 3 0x100090 kqread syslogd 52657 170285 1 0 3 0x100082 netio syslogd 9061 288819 1 77 2 0x100010 dhclient *88468 213477 1 0 7 0 dhclient 91421 11045 0 0 3 0x14200 bored smr 94142 229832 0 0 3 0x14200 pgzero zerothread 99669 298021 0 0 3 0x14200 aiodoned aiodoned 14681 489237 0 0 3 0x14200 syncer update 85674 173693 0 0 3 0x14200 cleaner cleaner 28860 135974 0 0 3 0x14200 reaper reaper 63885 137222 0 0 3 0x14200 pgdaemon pagedaemon 49387 156698 0 0 3 0x14200 bored crynlk 59434 145774 0 0 3 0x14200 bored crypto 31653 303896 0 0 3 0x40014200 acpi0 acpi0 83629 146361 0 0 2 0x14200 softnet 54266 104987 0 0 2 0x14200 systqmp 42692 89541 0 0 3 0x14200 bored systq 8174 140646 0 0 3 0x40014200 bored softclock 96548 513575 0 0 3 0x40014200 idle0 1 441996 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 9441 6321K 6321K 78643K 10540 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 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 68 11K 12K 78643K 839 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 3005K 3069K 78643K 1665 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 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 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 256 144 0 0 9 0 9 9 0 8 0 art_table 32 145 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 1414 0 20 45 0 45 45 0 8 0 ffsino 240 1414 0 20 83 0 83 83 0 8 1 nchpl 144 1639 0 38 60 0 60 60 0 8 0 uvmvnodes 72 1423 0 0 26 0 26 26 0 8 0 vnodes 208 1423 0 0 75 0 75 75 0 8 0 namei 1024 3833 0 3833 1 0 1 1 0 8 1 scxspl 192 4334 0 4334 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 39 0 30 1 0 1 1 0 8 0 kqueuepl 144 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 120 964 0 913 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 0 1 1 0 8 1 mcl2k 2048 5508 0 5480 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9587 0 9509 8 1 7 7 0 8 0 bufpl 280 3646 0 160 249 0 249 249 0 8 0 anonpl 16 20275 0 18821 15 2 13 13 0 107 7 amapchunkpl 152 744 0 683 5 0 5 5 0 158 2 amappl16 192 117 0 91 2 0 2 2 0 8 0 amappl15 184 3 0 1 1 0 1 1 0 8 0 amappl14 176 3 0 2 2 1 1 1 0 8 0 amappl13 168 18 0 17 1 0 1 1 0 8 0 amappl12 160 6 0 3 1 0 1 1 0 8 0 amappl11 152 59 0 47 1 0 1 1 0 8 0 amappl10 144 14 0 11 1 0 1 1 0 8 0 amappl9 136 224 0 221 1 0 1 1 0 8 0 amappl8 128 239 0 230 1 0 1 1 0 8 0 amappl7 120 101 0 92 1 0 1 1 0 8 0 amappl6 112 23 0 21 2 1 1 1 0 8 0 amappl5 104 134 0 124 1 0 1 1 0 8 0 amappl4 96 444 0 420 1 0 1 1 0 8 0 amappl3 88 111 0 106 1 0 1 1 0 8 0 amappl2 80 834 0 780 3 0 3 3 0 8 1 amappl1 72 13678 0 13286 27 10 17 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 6044 0 6024 1 0 1 1 0 8 0 vmmpepl 168 29140 0 28301 86 9 77 77 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 103405 0 99716 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 112 126 0 5 4 0 4 4 0 8 0 ddb>