kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Wed Jan 8 16:22:25 PST 2020 OpenBSD/amd64 (ci-openbsd-main-4.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.212' (ECDSA) to the list of known hosts. 2020/01/08 16:24:06 parsed 1 programs 2020/01/08 16:24:12 executed programs: 0 login: panic: receive 1a: so 0xfffffd805e4e3300, so_type 3, m 0xfffffd805bfb7100, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *250186 64995 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff8219a0ba) at panic+0x15c soreceive(fffffd805e4e3300,0,ffff80001d37e448,0,0,ffff80001d37e354) at soreceive+0x170a soo_read(fffffd8061f3e348,ffff80001d37e448,0) at soo_read+0x53 dofilereadv(ffff8000ffff9150,6,ffff80001d37e448,0,ffff80001d37e530) at dofilereadv+0x1a2 sys_read(ffff8000ffff9150,ffff80001d37e4e0,ffff80001d37e530) at sys_read+0x83 syscall(ffff80001d37e5b0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd2450, 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 0xfffffd805e4e3300, so_type 3, m 0xfffffd805bfb7100, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff8219a0ba) at panic+0x15c soreceive(fffffd805e4e3300,0,ffff80001d37e448,0,0,ffff80001d37e354) at soreceive+0x170a soo_read(fffffd8061f3e348,ffff80001d37e448,0) at soo_read+0x53 dofilereadv(ffff8000ffff9150,6,ffff80001d37e448,0,ffff80001d37e530) at dofilereadv+0x1a2 sys_read(ffff8000ffff9150,ffff80001d37e4e0,ffff80001d37e530) at sys_read+0x83 syscall(ffff80001d37e5b0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd2450, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d37e190 rbx 0xffff80001d37e240 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d37e150 r9 0x1 r10 0x514751b72e4739e9 r11 0xb79d49294c3f2418 r12 0x3000000008 r13 0xffff80001d37e1a0 r14 0x100 r15 0x1 rip 0xffffffff818838e8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d37e180 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=250186 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8008,0xffff8000ffff93d8 process=0xffff8000ffff66d0 user=0xffff80001d379000, vmspace=0xfffffd806bc09880 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 97801 46032 81423 0 3 0x82 thrsleep syz-execprog 97801 333957 81423 0 3 0x4000082 nanosleep syz-execprog 97801 435965 81423 0 3 0x4000082 thrsleep syz-execprog 97801 292232 81423 0 3 0x4000082 thrsleep syz-execprog 97801 472529 81423 0 3 0x4000082 wait syz-execprog 97801 36394 81423 0 3 0x4000082 thrsleep syz-execprog 97801 240692 81423 0 3 0x4000082 thrsleep syz-execprog 81423 347625 13166 0 3 0x10008a pause ksh 13166 484614 61842 0 3 0x92 select sshd 82948 401104 1 0 3 0x100083 ttyin getty 61842 374351 1 0 3 0x80 select sshd 1415 419008 85766 73 3 0x100090 kqread syslogd 85766 419562 1 0 3 0x100082 netio syslogd 20783 96529 1 77 2 0x100010 dhclient *64995 250186 1 0 7 0 dhclient 26776 310744 0 0 3 0x14200 pgzero zerothread 76539 220598 0 0 3 0x14200 aiodoned aiodoned 11002 466869 0 0 3 0x14200 syncer update 95482 260369 0 0 3 0x14200 cleaner cleaner 40587 90825 0 0 3 0x14200 reaper reaper 50818 413479 0 0 3 0x14200 pgdaemon pagedaemon 31107 181361 0 0 3 0x14200 bored crynlk 81331 105538 0 0 3 0x14200 bored crypto 52826 87307 0 0 3 0x40014200 acpi0 acpi0 68188 21437 0 0 2 0x14200 softnet 15925 318462 0 0 2 0x14200 systqmp 29334 455124 0 0 3 0x14200 bored systq 51545 51532 0 0 3 0x40014200 bored softclock 60559 82128 0 0 3 0x40014200 idle0 33295 470039 0 0 3 0x14200 bored smr 1 91152 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 873 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 3056 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 2 1 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 2 1 1 1 0 8 1 scxspl 192 4186 0 4186 4 3 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 112 134 0 122 2 1 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 2 1 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 2 1 1 1 0 8 1 mcl2k 2048 5502 0 5472 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9555 0 9473 8 1 7 7 0 8 0 bufpl 280 5847 0 1326 323 0 323 323 0 8 0 anonpl 16 21076 0 19607 15 2 13 13 0 107 6 amapchunkpl 152 715 0 654 5 0 5 5 0 158 2 amappl16 192 70 0 48 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 24 0 19 2 1 1 1 0 8 0 amappl13 168 9 0 7 1 0 1 1 0 8 0 amappl12 160 10 0 8 2 1 1 1 0 8 0 amappl11 152 48 0 37 1 0 1 1 0 8 0 amappl10 144 11 0 10 2 1 1 1 0 8 0 amappl9 136 401 0 398 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 55 0 52 1 0 1 1 0 8 0 amappl5 104 125 0 116 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 80 834 0 776 3 0 3 3 0 8 1 amappl1 72 13666 0 13259 26 8 18 20 0 8 8 amappl 80 432 0 407 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 6054 0 6039 1 0 1 1 0 8 0 vmmpepl 168 29500 0 28623 90 11 79 79 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 104528 0 100798 115 2 113 113 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 112 125 0 7 4 0 4 4 0 8 0