kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Jan 10 16:17:11 PST 2020 OpenBSD/amd64 (ci-openbsd-main-2.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.211' (ECDSA) to the list of known hosts. 2020/01/10 16:17:27 parsed 1 programs 2020/01/10 16:17:34 executed programs: 0 login: panic: receive 3: so 0xfffffd805e4d4300, so_type 3, m 0xfffffd805c16e700, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 72710 34264 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff8219029c) at panic+0x15c soreceive(fffffd805e4d4300,0,ffff80001d37e9a8,0,0,ffff80001d37e8b4) at soreceive+0x16e7 soo_read(fffffd80613fe4b0,ffff80001d37e9a8,0) at soo_read+0x53 dofilereadv(ffff8000ffff8ed8,6,ffff80001d37e9a8,0,ffff80001d37ea90) at dofilereadv+0x1a2 sys_read(ffff8000ffff8ed8,ffff80001d37ea40,ffff80001d37ea90) at sys_read+0x83 syscall(ffff80001d37eb10) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdbc60, 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 0xfffffd805e4d4300, so_type 3, m 0xfffffd805c16e700, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff8219029c) at panic+0x15c soreceive(fffffd805e4d4300,0,ffff80001d37e9a8,0,0,ffff80001d37e8b4) at soreceive+0x16e7 soo_read(fffffd80613fe4b0,ffff80001d37e9a8,0) at soo_read+0x53 dofilereadv(ffff8000ffff8ed8,6,ffff80001d37e9a8,0,ffff80001d37ea90) at dofilereadv+0x1a2 sys_read(ffff8000ffff8ed8,ffff80001d37ea40,ffff80001d37ea90) at sys_read+0x83 syscall(ffff80001d37eb10) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdbc60, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d37e6f0 rbx 0xffff80001d37e7a0 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d37e6b0 r9 0x1 r10 0x88752c6f6401e057 r11 0x192814346d4fa376 r12 0x3000000008 r13 0xffff80001d37e700 r14 0x100 r15 0x1 rip 0xffffffff81042028 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d37e6e0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=72710 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8008,0xffff8000ffff9160 process=0xffff8000ffff66d0 user=0xffff80001d379000, vmspace=0xfffffd806bc09000 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 90227 497180 73696 0 3 0x82 thrsleep syz-execprog 90227 275059 73696 0 3 0x4000082 nanosleep syz-execprog 90227 109239 73696 0 3 0x4000082 thrsleep syz-execprog 90227 169384 73696 0 3 0x4000082 thrsleep syz-execprog 90227 217100 73696 0 3 0x4000082 wait syz-execprog 90227 231310 73696 0 3 0x4000082 thrsleep syz-execprog 90227 291196 73696 0 3 0x4000082 thrsleep syz-execprog 73696 327186 65505 0 3 0x10008a pause ksh 65505 159216 27007 0 3 0x92 select sshd 27695 7959 1 0 3 0x100083 ttyin getty 27007 477199 1 0 3 0x80 select sshd 33684 113493 13838 73 3 0x100090 kqread syslogd 13838 136405 1 0 3 0x100082 netio syslogd 65052 436488 1 77 2 0x100010 dhclient *34264 72710 1 0 7 0 dhclient 95269 189657 0 0 3 0x14200 pgzero zerothread 29455 511633 0 0 3 0x14200 aiodoned aiodoned 34828 56853 0 0 3 0x14200 syncer update 66757 495066 0 0 3 0x14200 cleaner cleaner 54219 301348 0 0 3 0x14200 reaper reaper 13011 476780 0 0 3 0x14200 pgdaemon pagedaemon 90713 391887 0 0 3 0x14200 bored crynlk 80890 353240 0 0 3 0x14200 bored crypto 85223 195629 0 0 3 0x40014200 acpi0 acpi0 7857 343981 0 0 2 0x14200 softnet 11987 14063 0 0 2 0x14200 systqmp 39414 488093 0 0 3 0x14200 bored systq 49847 330118 0 0 3 0x40014200 bored softclock 50375 41275 0 0 3 0x40014200 idle0 24303 24323 0 0 3 0x14200 bored smr 1 266855 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 74 11K 12K 78643K 891 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 2993K 3057K 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 256 167 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 3992 0 3992 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 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 5506 0 5476 7 2 5 7 0 8 1 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9584 0 9507 8 1 7 7 0 8 0 bufpl 280 5847 0 1326 323 0 323 323 0 8 0 anonpl 16 21924 0 20454 15 2 13 13 0 107 6 amapchunkpl 152 855 0 794 5 0 5 5 0 158 2 amappl16 192 91 0 67 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 21 0 18 1 0 1 1 0 8 0 amappl12 160 10 0 7 2 1 1 1 0 8 0 amappl11 152 43 0 32 1 0 1 1 0 8 0 amappl10 144 11 0 10 1 0 1 1 0 8 0 amappl9 136 395 0 393 1 0 1 1 0 8 0 amappl8 128 82 0 73 1 0 1 1 0 8 0 amappl7 120 87 0 77 1 0 1 1 0 8 0 amappl6 112 56 0 50 1 0 1 1 0 8 0 amappl5 104 132 0 121 1 0 1 1 0 8 0 amappl4 96 429 0 404 1 0 1 1 0 8 0 amappl3 88 126 0 117 1 0 1 1 0 8 0 amappl2 80 855 0 796 3 0 3 3 0 8 1 amappl1 72 13449 0 13051 27 10 17 20 0 8 8 amappl 80 447 0 422 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 6056 0 6041 1 0 1 1 0 8 0 vmmpepl 168 29477 0 28604 88 10 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 105316 0 101580 114 0 114 114 0 265 82 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>