kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Apr 24 19:24:39 PDT 2020 OpenBSD/amd64 (ci-openbsd-main-2.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.201' (ECDSA) to the list of known hosts. 2020/04/24 19:24:55 parsed 1 programs 2020/04/24 19:24:59 executed programs: 0 login: panic: receive 1a: so 0xfffffd8069669640, so_type 3, m 0xfffffd805a062100, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *152550 46816 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821c3f51) at panic+0x15c soreceive(fffffd8069669640,0,ffff80001d772168,0,0,ffff80001d772074) at soreceive+0x170a soo_read(fffffd8069404690,ffff80001d772168,0) at soo_read+0x53 dofilereadv(ffff80001d7399c8,6,ffff80001d772168,0,ffff80001d772250) at dofilereadv+0x1a1 sys_read(ffff80001d7399c8,ffff80001d772200,ffff80001d772250) at sys_read+0x83 syscall(ffff80001d7722d0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff9740, 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 0xfffffd8069669640, so_type 3, m 0xfffffd805a062100, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821c3f51) at panic+0x15c soreceive(fffffd8069669640,0,ffff80001d772168,0,0,ffff80001d772074) at soreceive+0x170a soo_read(fffffd8069404690,ffff80001d772168,0) at soo_read+0x53 dofilereadv(ffff80001d7399c8,6,ffff80001d772168,0,ffff80001d772250) at dofilereadv+0x1a1 sys_read(ffff80001d7399c8,ffff80001d772200,ffff80001d772250) at sys_read+0x83 syscall(ffff80001d7722d0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff9740, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d771eb0 rbx 0xffff80001d771f60 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d771e70 r9 0x1 r10 0x7df3ab24863670c3 r11 0xabd832e036df5b1f r12 0x3000000008 r13 0xffff80001d771ec0 r14 0x100 r15 0x1 rip 0xffffffff815e4318 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d771ea0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=152550 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d73a118,0xffff80001d739c48 process=0xffff8000ffffa740 user=0xffff80001d76d000, vmspace=0xfffffd806bc0a440 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 3951 440163 9 0 3 0x82 thrsleep syz-execprog 3951 469582 9 0 3 0x4000082 thrsleep syz-execprog 3951 467426 9 0 3 0x4000082 thrsleep syz-execprog 3951 437282 9 0 3 0x4000082 thrsleep syz-execprog 3951 395709 9 0 3 0x4000082 wait syz-execprog 3951 17257 9 0 3 0x4000082 kqread syz-execprog 3951 491409 9 0 3 0x4000082 thrsleep syz-execprog 9 332612 73620 0 3 0x10008a pause ksh 73620 141782 27823 0 3 0x92 select sshd 14908 56843 1 0 3 0x100083 ttyin getty 27823 182661 1 0 3 0x80 select sshd 66799 362057 10745 73 3 0x100090 kqread syslogd 10745 115146 1 0 3 0x100082 netio syslogd 39068 50987 1 77 2 0x100010 dhclient *46816 152550 1 0 7 0 dhclient 52419 487055 0 0 3 0x14200 bored smr 33213 348853 0 0 3 0x14200 pgzero zerothread 62005 1367 0 0 3 0x14200 aiodoned aiodoned 60580 384524 0 0 3 0x14200 syncer update 86232 274401 0 0 3 0x14200 cleaner cleaner 36891 115738 0 0 3 0x14200 reaper reaper 15367 465516 0 0 3 0x14200 pgdaemon pagedaemon 91161 229593 0 0 3 0x14200 bored crynlk 33635 122514 0 0 3 0x14200 bored crypto 66555 98441 0 0 3 0x40014200 acpi0 acpi0 83631 379794 0 0 2 0x14200 softnet 54679 117477 0 0 2 0x14200 systqmp 73052 202592 0 0 3 0x14200 bored systq 53517 371879 0 0 3 0x40014200 bored softclock 32100 460166 0 0 3 0x40014200 idle0 1 518792 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 69 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 3029K 3093K 78643K 1677 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 dino2pl 256 1414 0 20 88 0 88 88 0 8 0 ffsino 240 1414 0 20 83 0 83 83 0 8 1 nchpl 144 1638 0 37 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 3872 0 3872 1 0 1 1 0 8 1 scxspl 192 4422 0 4422 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 2 1 1 1 0 8 0 pipepl 120 134 0 123 2 1 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 57 0 50 1 0 1 1 0 8 0 zombiepl 144 187 0 186 1 0 1 1 0 8 0 processpl 920 212 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 5535 0 5507 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9693 0 9614 9 2 7 7 0 8 0 bufpl 280 3720 0 183 253 0 253 253 0 8 0 anonpl 16 20351 0 18907 15 2 13 13 0 107 6 amapchunkpl 152 710 0 649 5 0 5 5 0 158 2 amappl16 192 119 0 94 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 26 0 21 1 0 1 1 0 8 0 amappl13 168 19 0 18 2 1 1 1 0 8 0 amappl12 160 19 0 13 1 0 1 1 0 8 0 amappl11 152 46 0 36 1 0 1 1 0 8 0 amappl10 144 9 0 6 1 0 1 1 0 8 0 amappl9 136 222 0 220 1 0 1 1 0 8 0 amappl8 128 232 0 224 1 0 1 1 0 8 0 amappl7 120 102 0 93 1 0 1 1 0 8 0 amappl6 112 22 0 19 1 0 1 1 0 8 0 amappl5 104 135 0 126 1 0 1 1 0 8 0 amappl4 96 429 0 407 1 0 1 1 0 8 0 amappl3 88 111 0 105 1 0 1 1 0 8 0 amappl2 80 830 0 777 4 1 3 3 0 8 1 amappl1 72 13663 0 13271 27 10 17 20 0 8 8 amappl 80 418 0 393 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 6102 0 6083 1 0 1 1 0 8 0 vmmpepl 168 29067 0 28228 88 11 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 103650 0 99968 114 1 113 113 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 112 215 0 6 6 0 6 6 0 8 0 ddb>