kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Feb 21 17:27:04 PST 2020 OpenBSD/amd64 (ci-openbsd-main-1.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.51' (ECDSA) to the list of known hosts. 2020/02/21 17:27:14 parsed 1 programs 2020/02/21 17:27:17 executed programs: 0 login: panic: receive 1a: so 0xfffffd806260e640, so_type 3, m 0xfffffd805afed400, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *471118 81077 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821b8667) at panic+0x15c soreceive(fffffd806260e640,0,ffff80001d372a18,0,0,ffff80001d372924) at soreceive+0x170a soo_read(fffffd8061bf3348,ffff80001d372a18,0) at soo_read+0x53 dofilereadv(ffff80001d339c38,6,ffff80001d372a18,0,ffff80001d372b00) at dofilereadv+0x1a1 sys_read(ffff80001d339c38,ffff80001d372ab0,ffff80001d372b00) at sys_read+0x83 syscall(ffff80001d372b80) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcc160, 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 0xfffffd806260e640, so_type 3, m 0xfffffd805afed400, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821b8667) at panic+0x15c soreceive(fffffd806260e640,0,ffff80001d372a18,0,0,ffff80001d372924) at soreceive+0x170a soo_read(fffffd8061bf3348,ffff80001d372a18,0) at soo_read+0x53 dofilereadv(ffff80001d339c38,6,ffff80001d372a18,0,ffff80001d372b00) at dofilereadv+0x1a1 sys_read(ffff80001d339c38,ffff80001d372ab0,ffff80001d372b00) at sys_read+0x83 syscall(ffff80001d372b80) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcc160, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d372760 rbx 0xffff80001d372810 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d372720 r9 0x1 r10 0xafe3b0b019f6565f r11 0x3f8d01efa5376e56 r12 0x3000000008 r13 0xffff80001d372770 r14 0x100 r15 0x1 rip 0xffffffff8144c198 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d372750 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=471118 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d339758,0xffff80001d339eb8 process=0xffff8000ffffae10 user=0xffff80001d36d000, vmspace=0xfffffd806bc0a770 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 98208 224745 86926 0 3 0x82 thrsleep syz-execprog 98208 313518 86926 0 3 0x4000082 thrsleep syz-execprog 98208 336254 86926 0 3 0x4000082 thrsleep syz-execprog 98208 42791 86926 0 3 0x4000082 thrsleep syz-execprog 98208 246896 86926 0 3 0x4000082 wait syz-execprog 98208 405599 86926 0 3 0x4000082 kqread syz-execprog 98208 49902 86926 0 3 0x4000082 thrsleep syz-execprog 86926 256674 96610 0 3 0x10008a pause ksh 96610 210531 38381 0 3 0x92 select sshd 62751 341224 1 0 3 0x100083 ttyin getty 38381 240800 1 0 3 0x80 select sshd 50181 519689 93021 73 3 0x100090 kqread syslogd 93021 265266 1 0 3 0x100082 netio syslogd 949 223878 1 77 2 0x100010 dhclient *81077 471118 1 0 7 0 dhclient 97472 144997 0 0 3 0x14200 pgzero zerothread 28750 123609 0 0 3 0x14200 aiodoned aiodoned 70457 433087 0 0 3 0x14200 syncer update 45975 245763 0 0 3 0x14200 cleaner cleaner 17374 345159 0 0 3 0x14200 reaper reaper 28444 326535 0 0 3 0x14200 pgdaemon pagedaemon 53966 179219 0 0 3 0x14200 bored crynlk 10467 37511 0 0 3 0x14200 bored crypto 47998 87980 0 0 3 0x40014200 acpi0 acpi0 45365 295780 0 0 2 0x14200 softnet 85353 56506 0 0 2 0x14200 systqmp 6349 235463 0 0 3 0x14200 bored systq 29372 228548 0 0 3 0x40014200 bored softclock 23006 293039 0 0 3 0x40014200 idle0 96678 425381 0 0 3 0x14200 bored smr 1 351199 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 67 11K 12K 78643K 838 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 1666 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 9 0 6 1 0 1 1 0 8 0 inpcb 280 28 0 22 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 256 145 0 0 10 0 10 10 0 8 0 art_table 32 146 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 4325 0 4325 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 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 120 965 0 914 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 72 0 56 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5509 0 5481 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9621 0 9542 8 1 7 7 0 8 0 bufpl 280 3646 0 160 249 0 249 249 0 8 0 anonpl 16 20419 0 18969 15 2 13 13 0 107 6 amapchunkpl 152 729 0 668 5 0 5 5 0 158 1 amappl16 192 121 0 95 2 0 2 2 0 8 0 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 3 0 1 2 1 1 1 0 8 0 amappl13 168 19 0 18 1 0 1 1 0 8 0 amappl12 160 17 0 14 1 0 1 1 0 8 0 amappl11 152 65 0 52 1 0 1 1 0 8 0 amappl10 144 12 0 9 1 0 1 1 0 8 0 amappl9 136 207 0 205 1 0 1 1 0 8 0 amappl8 128 230 0 223 1 0 1 1 0 8 0 amappl7 120 103 0 94 1 0 1 1 0 8 0 amappl6 112 21 0 19 1 0 1 1 0 8 0 amappl5 104 165 0 156 1 0 1 1 0 8 0 amappl4 96 445 0 420 1 0 1 1 0 8 0 amappl3 88 110 0 105 1 0 1 1 0 8 0 amappl2 80 834 0 779 3 0 3 3 0 8 1 amappl1 72 13513 0 13127 25 8 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 6035 0 6015 1 0 1 1 0 8 0 vmmpepl 168 29288 0 28457 81 4 77 77 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 103456 0 99776 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 112 127 0 5 4 0 4 4 0 8 0 ddb>