kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Thu Feb 20 07:30:36 PST 2020 OpenBSD/amd64 (ci-openbsd-main-8.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.236' (ECDSA) to the list of known hosts. 2020/02/20 07:30:50 parsed 1 programs 2020/02/20 07:30:56 executed programs: 0 login: panic: receive 3: so 0xfffffd8067a3d320, so_type 3, m 0xfffffd806bc21700, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *421085 24240 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821aa30c) at panic+0x15c soreceive(fffffd8067a3d320,0,ffff80001d372a58,0,0,ffff80001d372964) at soreceive+0x16e7 soo_read(fffffd805eb12708,ffff80001d372a58,0) at soo_read+0x53 dofilereadv(ffff80001d339758,6,ffff80001d372a58,0,ffff80001d372b40) at dofilereadv+0x1a1 sys_read(ffff80001d339758,ffff80001d372af0,ffff80001d372b40) at sys_read+0x83 syscall(ffff80001d372bc0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc81d0, 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 0xfffffd8067a3d320, so_type 3, m 0xfffffd806bc21700, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821aa30c) at panic+0x15c soreceive(fffffd8067a3d320,0,ffff80001d372a58,0,0,ffff80001d372964) at soreceive+0x16e7 soo_read(fffffd805eb12708,ffff80001d372a58,0) at soo_read+0x53 dofilereadv(ffff80001d339758,6,ffff80001d372a58,0,ffff80001d372b40) at dofilereadv+0x1a1 sys_read(ffff80001d339758,ffff80001d372af0,ffff80001d372b40) at sys_read+0x83 syscall(ffff80001d372bc0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc81d0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d3727a0 rbx 0xffff80001d372850 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d372760 r9 0x1 r10 0x4c8db9d7f3c33a6 r11 0xb4bc6e43acc2aa8f r12 0x3000000008 r13 0xffff80001d3727b0 r14 0x100 r15 0x1 rip 0xffffffff810c59a8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d372790 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=421085 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d33a118,0xffff80001d3399d8 process=0xffff8000ffffb190 user=0xffff80001d36d000, vmspace=0xfffffd806bc09550 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 91357 176118 36590 0 3 0x82 wait syz-execprog 91357 69147 36590 0 3 0x4000082 thrsleep syz-execprog 91357 414271 36590 0 3 0x4000082 thrsleep syz-execprog 91357 138509 36590 0 3 0x4000082 thrsleep syz-execprog 91357 508320 36590 0 3 0x4000082 thrsleep syz-execprog 91357 73832 36590 0 3 0x4000082 kqread syz-execprog 91357 145329 36590 0 3 0x4000082 thrsleep syz-execprog 36590 87038 82184 0 3 0x10008a pause ksh 82184 201691 75298 0 3 0x92 select sshd 20285 195797 1 0 3 0x100083 ttyin getty 75298 502574 1 0 3 0x80 select sshd 12826 408863 3170 73 3 0x100090 kqread syslogd 3170 133355 1 0 3 0x100082 netio syslogd 94295 107045 1 77 2 0x100010 dhclient *24240 421085 1 0 7 0 dhclient 24888 524127 0 0 3 0x14200 pgzero zerothread 21369 76924 0 0 3 0x14200 aiodoned aiodoned 79725 470593 0 0 3 0x14200 syncer update 59087 190288 0 0 3 0x14200 cleaner cleaner 41146 509911 0 0 3 0x14200 reaper reaper 20278 350674 0 0 3 0x14200 pgdaemon pagedaemon 69731 383332 0 0 3 0x14200 bored crynlk 12152 437100 0 0 3 0x14200 bored crypto 35744 146886 0 0 3 0x40014200 acpi0 acpi0 50164 451631 0 0 2 0x14200 softnet 26741 306463 0 0 2 0x14200 systqmp 28825 377655 0 0 3 0x14200 bored systq 10394 256214 0 0 3 0x40014200 bored softclock 12238 357243 0 0 3 0x40014200 idle0 87934 331398 0 0 3 0x14200 bored smr 1 287468 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 840 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 29 0 21 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 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 4347 0 4347 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 120 966 0 915 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 73 0 57 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5504 0 5475 7 2 5 7 0 8 1 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9595 0 9517 8 1 7 7 0 8 0 bufpl 280 3647 0 161 249 0 249 249 0 8 0 anonpl 16 20356 0 18889 15 2 13 13 0 107 6 amapchunkpl 152 744 0 683 5 0 5 5 0 158 2 amappl16 192 137 0 109 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 3 0 2 2 1 1 1 0 8 0 amappl13 168 18 0 17 1 0 1 1 0 8 0 amappl12 160 4 0 2 1 0 1 1 0 8 0 amappl11 152 63 0 50 1 0 1 1 0 8 0 amappl10 144 10 0 6 1 0 1 1 0 8 0 amappl9 136 216 0 213 1 0 1 1 0 8 0 amappl8 128 230 0 224 1 0 1 1 0 8 0 amappl7 120 101 0 92 1 0 1 1 0 8 0 amappl6 112 31 0 24 2 1 1 1 0 8 0 amappl5 104 153 0 144 1 0 1 1 0 8 0 amappl4 96 443 0 418 1 0 1 1 0 8 0 amappl3 88 111 0 106 1 0 1 1 0 8 0 amappl2 80 839 0 787 3 0 3 3 0 8 1 amappl1 72 13428 0 13037 26 8 18 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 6050 0 6030 1 0 1 1 0 8 0 vmmpepl 168 29128 0 28288 85 8 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 103235 0 99534 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>