kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Tue Dec 24 10:18:39 PST 2019 OpenBSD/amd64 (ci-openbsd-main-1.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.239' (ECDSA) to the list of known hosts. 2019/12/24 10:18:52 parsed 1 programs 2019/12/24 10:18:59 executed programs: 0 login: panic: receive 1a: so 0xfffffd805e4df000, so_type 3, m 0xfffffd8059f55100, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *263271 53049 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff8219a5e2) at panic+0x15c soreceive(fffffd805e4df000,0,ffff80001d37ed68,0,0,ffff80001d37ec74) at soreceive+0x170a soo_read(fffffd8064bfe258,ffff80001d37ed68,0) at soo_read+0x53 dofilereadv(ffff8000ffff84f8,6,ffff80001d37ed68,0,ffff80001d37ee50) at dofilereadv+0x1a2 sys_read(ffff8000ffff84f8,ffff80001d37ee00,ffff80001d37ee50) at sys_read+0x83 syscall(ffff80001d37eed0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff4d60, 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 0xfffffd805e4df000, so_type 3, m 0xfffffd8059f55100, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff8219a5e2) at panic+0x15c soreceive(fffffd805e4df000,0,ffff80001d37ed68,0,0,ffff80001d37ec74) at soreceive+0x170a soo_read(fffffd8064bfe258,ffff80001d37ed68,0) at soo_read+0x53 dofilereadv(ffff8000ffff84f8,6,ffff80001d37ed68,0,ffff80001d37ee50) at dofilereadv+0x1a2 sys_read(ffff8000ffff84f8,ffff80001d37ee00,ffff80001d37ee50) at sys_read+0x83 syscall(ffff80001d37eed0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff4d60, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d37eab0 rbx 0xffff80001d37eb60 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d37ea70 r9 0x1 r10 0x51094afacc3f92a3 r11 0x6e37d6af3218b794 r12 0x3000000008 r13 0xffff80001d37eac0 r14 0x100 r15 0x1 rip 0xffffffff812bd148 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d37eaa0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=263271 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff9150,0xffff8000ffff8290 process=0xffff8000ffff66e0 user=0xffff80001d379000, vmspace=0xfffffd806bc0a220 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 59562 356096 39935 0 3 0x82 thrsleep syz-execprog 59562 65507 39935 0 3 0x4000082 nanosleep syz-execprog 59562 347158 39935 0 3 0x4000082 thrsleep syz-execprog 59562 304549 39935 0 3 0x4000082 thrsleep syz-execprog 59562 497920 39935 0 3 0x4000082 wait syz-execprog 59562 145306 39935 0 3 0x4000082 thrsleep syz-execprog 59562 442101 39935 0 3 0x4000082 thrsleep syz-execprog 39935 136495 55811 0 3 0x10008a pause ksh 55811 402369 73169 0 3 0x92 select sshd 69293 32809 1 0 3 0x100083 ttyin getty 73169 59918 1 0 3 0x80 select sshd 5796 317148 20108 73 3 0x100090 kqread syslogd 20108 333586 1 0 3 0x100082 netio syslogd 27582 190185 1 77 2 0x100010 dhclient *53049 263271 1 0 7 0 dhclient 2310 470908 0 0 3 0x14200 pgzero zerothread 86152 12940 0 0 3 0x14200 aiodoned aiodoned 73615 332227 0 0 3 0x14200 syncer update 38036 256043 0 0 3 0x14200 cleaner cleaner 95502 256762 0 0 3 0x14200 reaper reaper 54150 257842 0 0 3 0x14200 pgdaemon pagedaemon 63033 487411 0 0 3 0x14200 bored crynlk 80037 367702 0 0 3 0x14200 bored crypto 85327 470294 0 0 3 0x40014200 acpi0 acpi0 97835 253288 0 0 2 0x14200 softnet 29974 63473 0 0 2 0x14200 systqmp 52580 28437 0 0 3 0x14200 bored systq 82360 415485 0 0 3 0x40014200 bored softclock 22602 199965 0 0 3 0x40014200 idle0 98093 269550 0 0 3 0x14200 bored smr 1 488791 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 76 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 22 3017K 3081K 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 1 0 1 0 8 0 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 4027 0 4027 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 5481 0 5452 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9527 0 9447 9 2 7 7 0 8 0 bufpl 280 5845 0 1326 323 0 323 323 0 8 0 anonpl 16 20819 0 19356 14 1 13 13 0 107 6 amapchunkpl 152 760 0 700 5 0 5 5 0 158 2 amappl16 192 81 0 58 2 0 2 2 0 8 0 amappl15 184 53 0 47 1 0 1 1 0 8 0 amappl14 176 21 0 18 1 0 1 1 0 8 0 amappl12 160 9 0 7 1 0 1 1 0 8 0 amappl11 152 44 0 33 1 0 1 1 0 8 0 amappl10 144 10 0 8 2 1 1 1 0 8 0 amappl9 136 388 0 386 1 0 1 1 0 8 0 amappl8 128 83 0 74 1 0 1 1 0 8 0 amappl7 120 88 0 79 1 0 1 1 0 8 0 amappl6 112 57 0 53 1 0 1 1 0 8 0 amappl5 104 141 0 131 1 0 1 1 0 8 0 amappl4 96 430 0 403 1 0 1 1 0 8 0 amappl3 88 122 0 115 1 0 1 1 0 8 0 amappl2 80 855 0 796 3 0 3 3 0 8 1 amappl1 72 13711 0 13311 26 8 18 20 0 8 8 amappl 80 429 0 404 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 6049 0 6034 1 0 1 1 0 8 0 vmmpepl 168 29445 0 28576 86 8 78 78 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 104346 0 100645 113 0 113 113 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 6 4 0 4 4 0 8 0 ddb>