kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Thu Jan 30 01:04:24 PST 2020 OpenBSD/amd64 (ci-openbsd-main-8.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.15' (ECDSA) to the list of known hosts. 2020/01/30 01:04:36 parsed 1 programs 2020/01/30 01:04:40 executed programs: 0 login: panic: receive 3: so 0xfffffd805e553190, so_type 3, m 0xfffffd805a75a300, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *215637 12644 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff82195c5e) at panic+0x15c soreceive(fffffd805e553190,0,ffff80001d3828e8,0,0,ffff80001d3827f4) at soreceive+0x16e7 soo_read(fffffd80647fe2d0,ffff80001d3828e8,0) at soo_read+0x53 dofilereadv(ffff80001d349278,6,ffff80001d3828e8,0,ffff80001d3829d0) at dofilereadv+0x1a2 sys_read(ffff80001d349278,ffff80001d382980,ffff80001d3829d0) at sys_read+0x83 syscall(ffff80001d382a50) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdb5e0, 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 0xfffffd805e553190, so_type 3, m 0xfffffd805a75a300, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff82195c5e) at panic+0x15c soreceive(fffffd805e553190,0,ffff80001d3828e8,0,0,ffff80001d3827f4) at soreceive+0x16e7 soo_read(fffffd80647fe2d0,ffff80001d3828e8,0) at soo_read+0x53 dofilereadv(ffff80001d349278,6,ffff80001d3828e8,0,ffff80001d3829d0) at dofilereadv+0x1a2 sys_read(ffff80001d349278,ffff80001d382980,ffff80001d3829d0) at sys_read+0x83 syscall(ffff80001d382a50) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdb5e0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d382630 rbx 0xffff80001d3826e0 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d3825f0 r9 0x1 r10 0xd35c0033bbdb17af r11 0x236b6ac1c499052d r12 0x3000000008 r13 0xffff80001d382640 r14 0x100 r15 0x1 rip 0xffffffff81ba0848 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d382620 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=215637 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d34a868,0xffff80001d349768 process=0xffff8000ffffaa90 user=0xffff80001d37d000, vmspace=0xfffffd806bc0a660 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 12846 162363 80274 0 3 0x82 thrsleep syz-execprog 12846 408795 80274 0 3 0x4000082 thrsleep syz-execprog 12846 325536 80274 0 3 0x4000082 thrsleep syz-execprog 12846 116248 80274 0 3 0x4000082 thrsleep syz-execprog 12846 406566 80274 0 3 0x4000082 kqread syz-execprog 12846 86948 80274 0 3 0x4000082 wait syz-execprog 12846 373009 80274 0 3 0x4000082 thrsleep syz-execprog 80274 242075 62138 0 3 0x10008a pause ksh 62138 406959 34316 0 3 0x92 select sshd 47416 235746 1 0 3 0x100083 ttyin getty 34316 165272 1 0 3 0x80 select sshd 34240 210129 72190 73 3 0x100090 kqread syslogd 72190 393382 1 0 3 0x100082 netio syslogd 69979 254507 1 77 2 0x100010 dhclient *12644 215637 1 0 7 0 dhclient 21684 46705 0 0 3 0x14200 pgzero zerothread 5834 19789 0 0 3 0x14200 aiodoned aiodoned 5061 339358 0 0 3 0x14200 syncer update 37152 174306 0 0 3 0x14200 cleaner cleaner 57280 18433 0 0 3 0x14200 reaper reaper 84281 191900 0 0 3 0x14200 pgdaemon pagedaemon 51776 318670 0 0 3 0x14200 bored crynlk 29594 151895 0 0 3 0x14200 bored crypto 2953 342007 0 0 3 0x40014200 acpi0 acpi0 70665 232901 0 0 2 0x14200 softnet 31501 427868 0 0 2 0x14200 systqmp 275 386924 0 0 3 0x14200 bored systq 8211 436418 0 0 3 0x40014200 bored softclock 29445 451712 0 0 3 0x40014200 idle0 2584 229688 0 0 3 0x14200 bored smr 1 182582 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 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 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 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 73 11K 12K 78643K 880 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 3001K 3065K 78643K 1690 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 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 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 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 256 168 0 0 11 0 11 11 0 8 0 art_table 32 169 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 4357 0 4357 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 104 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 120 998 0 947 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 71 0 55 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5496 0 5468 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9523 0 9451 7 0 7 7 0 8 0 bufpl 280 3713 0 179 253 0 253 253 0 8 0 anonpl 16 21061 0 19589 14 1 13 13 0 107 6 amapchunkpl 152 787 0 726 5 0 5 5 0 158 2 amappl16 192 90 0 65 2 0 2 2 0 8 0 amappl15 184 51 0 47 1 0 1 1 0 8 0 amappl14 176 20 0 18 1 0 1 1 0 8 0 amappl12 160 8 0 6 1 0 1 1 0 8 0 amappl11 152 43 0 32 1 0 1 1 0 8 0 amappl10 144 13 0 13 1 0 1 1 0 8 1 amappl9 136 398 0 396 1 0 1 1 0 8 0 amappl8 128 86 0 76 1 0 1 1 0 8 0 amappl7 120 87 0 77 1 0 1 1 0 8 0 amappl6 112 58 0 53 1 0 1 1 0 8 0 amappl5 104 129 0 118 1 0 1 1 0 8 0 amappl4 96 430 0 404 1 0 1 1 0 8 0 amappl3 88 125 0 117 1 0 1 1 0 8 0 amappl2 80 853 0 795 3 0 3 3 0 8 1 amappl1 72 13611 0 13214 26 8 18 20 0 8 8 amappl 80 435 0 410 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 6056 0 6036 1 0 1 1 0 8 0 vmmpepl 168 29439 0 28570 83 5 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 104586 0 100855 114 0 114 114 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 112 127 0 4 4 0 4 4 0 8 0 ddb>