kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Dec 13 03:10:54 PST 2019 OpenBSD/amd64 (ci-openbsd-main-9.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.228' (ECDSA) to the list of known hosts. 2019/12/13 03:11:05 parsed 1 programs 2019/12/13 03:11:13 executed programs: 0 login: panic: receive 1a: so 0xfffffd8036fb2480, so_type 3, m 0xfffffd8034f30000, m_type -343 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *439946 64585 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff82193a56) at panic+0x15c soreceive(fffffd8036fb2480,0,ffff800014896958,0,0,ffff800014896864) at soreceive+0x170a soo_read(fffffd8037ff6708,ffff800014896958,0) at soo_read+0x53 dofilereadv(ffff8000ffff8ed8,6,ffff800014896958,0,ffff800014896a40) at dofilereadv+0x1a2 sys_read(ffff8000ffff8ed8,ffff8000148969f0,ffff800014896a40) at sys_read+0x83 syscall(ffff800014896ac0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbb5e0, 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 0xfffffd8036fb2480, so_type 3, m 0xfffffd8034f30000, m_type -343 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff82193a56) at panic+0x15c soreceive(fffffd8036fb2480,0,ffff800014896958,0,0,ffff800014896864) at soreceive+0x170a soo_read(fffffd8037ff6708,ffff800014896958,0) at soo_read+0x53 dofilereadv(ffff8000ffff8ed8,6,ffff800014896958,0,ffff800014896a40) at dofilereadv+0x1a2 sys_read(ffff8000ffff8ed8,ffff8000148969f0,ffff800014896a40) at sys_read+0x83 syscall(ffff800014896ac0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbb5e0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff8000148966a0 rbx 0xffff800014896750 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff800014896660 r9 0x1 r10 0xb394a2cb32cd04b1 r11 0x39e94cde134afbcc r12 0x3000000008 r13 0xffff8000148966b0 r14 0x100 r15 0x1 rip 0xffffffff816a1568 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800014896690 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=439946 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8280,0xffff8000ffff9160 process=0xffff8000ffff6010 user=0xffff800014891000, vmspace=0xfffffd803f012550 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 62925 274952 61899 0 3 0x82 thrsleep syz-execprog 62925 65459 61899 0 3 0x4000082 nanosleep syz-execprog 62925 375850 61899 0 3 0x4000082 thrsleep syz-execprog 62925 321743 61899 0 3 0x4000082 thrsleep syz-execprog 62925 506206 61899 0 2 0x4000002 syz-execprog 62925 496997 61899 0 3 0x4000082 thrsleep syz-execprog 62925 17253 61899 0 3 0x4000082 thrsleep syz-execprog 61899 114605 26628 0 3 0x10008a pause ksh 26628 293340 96417 0 3 0x92 select sshd 35255 200999 1 0 3 0x100083 ttyin getty 96417 175274 1 0 3 0x80 select sshd 69554 118292 65757 73 3 0x100090 kqread syslogd 65757 505011 1 0 3 0x100082 netio syslogd 53982 224210 1 77 3 0x100090 poll dhclient *64585 439946 1 0 7 0 dhclient 26969 231843 0 0 3 0x14200 pgzero zerothread 61110 117985 0 0 3 0x14200 aiodoned aiodoned 21061 271845 0 0 3 0x14200 syncer update 9744 474906 0 0 3 0x14200 cleaner cleaner 87459 375537 0 0 3 0x14200 reaper reaper 48169 281084 0 0 3 0x14200 pgdaemon pagedaemon 29690 232307 0 0 3 0x14200 bored crynlk 56253 268957 0 0 3 0x14200 bored crypto 98577 273584 0 0 3 0x40014200 acpi0 acpi0 34157 96941 0 0 3 0x14200 bored softnet 82461 139844 0 0 3 0x14200 bored systqmp 11313 459996 0 0 3 0x14200 bored systq 55827 20793 0 0 3 0x40014200 bored softclock 9201 516726 0 0 3 0x40014200 idle0 78418 181759 0 0 3 0x14200 bored smr 1 376280 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 9438 6318K 6320K 78643K 10539 0 pcb 13 8K 8K 78643K 13 0 rtable 63 1K 2K 78643K 159 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 1 0K 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 68 3K 12K 78643K 859 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 3013K 3077K 78643K 3064 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 47 11 0 11 11 0 8 2 art_table 32 168 0 47 2 0 2 2 0 8 0 art_node 16 33 0 12 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 1642 0 40 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 3874 0 3874 1 0 1 1 0 8 1 scxspl 192 3997 0 3997 2 1 1 2 0 8 1 plimitpl 152 14 0 9 1 0 1 1 0 8 0 sigapl 432 197 0 187 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 0 124 1 0 1 1 0 8 0 fdescpl 424 198 0 187 2 0 2 2 0 8 0 filepl 120 1001 0 950 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 10 1 0 1 1 0 8 0 pgrppl 48 18 0 10 1 0 1 1 0 8 0 ucredpl 96 47 0 40 1 0 1 1 0 8 0 zombiepl 144 187 0 187 1 0 1 1 0 8 1 processpl 872 212 0 187 4 0 4 4 0 8 0 procpl 632 218 0 187 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 1 0 1 0 8 0 mcl2k 2048 5478 0 5446 7 2 5 7 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9519 0 9435 8 1 7 7 0 8 0 bufpl 280 5846 0 1354 321 0 321 321 0 8 0 anonpl 16 20228 0 18777 14 1 13 13 0 62 6 amapchunkpl 152 774 0 716 5 0 5 5 0 158 2 amappl16 192 80 0 58 2 0 2 2 0 8 0 amappl15 184 52 0 48 1 0 1 1 0 8 0 amappl14 176 21 0 19 1 0 1 1 0 8 0 amappl12 160 7 0 5 1 0 1 1 0 8 0 amappl11 152 47 0 35 1 0 1 1 0 8 0 amappl10 144 11 0 11 1 0 1 1 0 8 1 amappl9 136 394 0 393 1 0 1 1 0 8 0 amappl8 128 88 0 77 1 0 1 1 0 8 0 amappl7 120 87 0 76 1 0 1 1 0 8 0 amappl6 112 60 0 53 1 0 1 1 0 8 0 amappl5 104 130 0 120 1 0 1 1 0 8 0 amappl4 96 425 0 401 1 0 1 1 0 8 0 amappl3 88 125 0 117 1 0 1 1 0 8 0 amappl2 80 848 0 794 3 0 3 3 0 8 1 amappl1 72 13385 0 12988 26 8 18 20 0 8 8 amappl 80 419 0 396 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 0 187 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 198 0 187 1 0 1 1 0 8 0 vmmpekpl 168 6055 0 6039 1 0 1 1 0 8 0 vmmpepl 168 29363 0 28520 83 4 79 79 0 357 40 vmsppl 272 197 0 187 1 0 1 1 0 8 0 pdppl 4096 402 0 374 5 0 5 5 0 8 0 pvpl 32 103502 0 99870 113 0 113 113 0 265 81 pmappl 200 197 0 187 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>