kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Thu Jan 16 02:47:53 PST 2020 OpenBSD/amd64 (ci-openbsd-multicore-5.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.44' (ECDSA) to the list of known hosts. 2020/01/16 02:48:14 parsed 1 programs 2020/01/16 02:48:21 executed programs: 0 login: panic: receive 1a: so 0xfffffd806f65d4b0, so_type 3, m 0xfffffd806d4ed800, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 48635 66636 0 0 0 0K dhclient 405410 12613 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x18 panic(ffffffff821bc6ec) at panic+0x15c soreceive(fffffd806f65d4b0,0,ffff800020abce78,0,0,ffff800020abcd84) at soreceive+0x174a soo_read(fffffd807a9fd260,ffff800020abce78,0) at soo_read+0x53 dofilereadv(ffff800020a77640,6,ffff800020abce78,0,ffff800020abcf60) at dofilereadv+0x1a2 sys_read(ffff800020a77640,ffff800020abcf10,ffff800020abcf60) at sys_read+0x83 syscall(ffff800020abcfe0) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcade0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic receive 1a: so 0xfffffd806f65d4b0, so_type 3, m 0xfffffd806d4ed800, m_type 0 ddb{0}> trace db_enter() at db_enter+0x18 panic(ffffffff821bc6ec) at panic+0x15c soreceive(fffffd806f65d4b0,0,ffff800020abce78,0,0,ffff800020abcd84) at soreceive+0x174a soo_read(fffffd807a9fd260,ffff800020abce78,0) at soo_read+0x53 dofilereadv(ffff800020a77640,6,ffff800020abce78,0,ffff800020abcf60) at dofilereadv+0x1a2 sys_read(ffff800020a77640,ffff800020abcf10,ffff800020abcf60) at sys_read+0x83 syscall(ffff800020abcfe0) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcade0, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020abcbc0 rbx 0xffff800020abcc70 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff816b7fbf kprintf+0x16f r9 0x1 r10 0x545656c568b8d060 r11 0x55d2d1eefb41b63d r12 0x3000000008 r13 0xffff800020abcbd0 r14 0x100 r15 0x1 rip 0xffffffff81429ef8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020abcbb0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (dhclient) pid=48635 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020a764f8,0xffff800020a778c8 process=0xffff800020aa2a90 user=0xffff800020ab8000, vmspace=0xfffffd807f0002e0 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 66337 410108 10140 0 3 0x82 thrsleep syz-execprog 66337 214611 10140 0 3 0x4000082 nanosleep syz-execprog 66337 399551 10140 0 3 0x4000082 thrsleep syz-execprog 66337 41662 10140 0 3 0x4000082 thrsleep syz-execprog 66337 435093 10140 0 3 0x4000082 thrsleep syz-execprog 66337 170185 10140 0 3 0x4000082 thrsleep syz-execprog 66337 515708 10140 0 3 0x4000082 kqread syz-execprog 66337 89705 10140 0 3 0x4000082 thrsleep syz-execprog 66337 212407 10140 0 3 0x4000082 wait syz-execprog 10140 394481 6757 0 3 0x10008a pause ksh 6757 138292 9042 0 3 0x92 select sshd 83440 185497 1 0 3 0x100083 ttyin getty 9042 441375 1 0 3 0x80 select sshd 96855 80847 40095 74 3 0x100092 bpf pflogd 40095 252074 1 0 3 0x80 netio pflogd 64017 265739 9322 73 3 0x100090 kqread syslogd 9322 190242 1 0 3 0x100082 netio syslogd 7048 381728 1 77 3 0x100090 poll dhclient *66636 48635 1 0 7 0 dhclient 43330 302793 0 0 3 0x14200 pgzero zerothread 6102 462285 0 0 3 0x14200 aiodoned aiodoned 55446 72016 0 0 3 0x14200 syncer update 96442 33416 0 0 3 0x14200 cleaner cleaner 12613 405410 0 0 7 0x14200 reaper 38985 362266 0 0 3 0x14200 pgdaemon pagedaemon 25417 321915 0 0 3 0x14200 bored crynlk 73202 178091 0 0 3 0x14200 bored crypto 76567 390858 0 0 3 0x40014200 acpi0 acpi0 12715 343687 0 0 3 0x40014200 idle1 65245 248581 0 0 3 0x14200 bored softnet 69125 350741 0 0 3 0x14200 bored systqmp 81419 226880 0 0 3 0x14200 bored systq 87654 358320 0 0 3 0x40014200 bored softclock 79696 377149 0 0 3 0x40014200 idle0 8316 309738 0 0 3 0x14200 bored smr 1 288972 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 66636 (dhclient) thread 0xffff800020a77640 (48635) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82663c50) #0 witness_lock+0x52e #1 solock+0x66 #2 soreceive+0x114 #3 soo_read+0x53 #4 dofilereadv+0x1a2 #5 sys_read+0x83 #6 syscall+0x4a4 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9461 6393K 6395K 78643K 10556 0 pcb 13 8K 8K 78643K 13 0 rtable 63 2K 2K 78643K 167 0 ifaddr 29 8K 9K 78643K 39 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1468 0 mount 1 1K 1K 78643K 1 0 vnodes 1181 74K 74K 78643K 1186 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 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 1 0K 12K 78643K 18 0 proc 59 63K 83K 78643K 398 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 197 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 77 12K 12K 78643K 972 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 4 0K 0K 78643K 7 0 temp 24 3005K 3069K 78643K 3319 0 kqueue 3 4K 4K 78643K 3 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 plcache 128 20 0 0 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 29 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 35 0 29 1 0 1 1 0 8 0 nd6 48 2 0 2 1 0 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 11 0 0 1 0 1 1 0 8 0 pfstkey 112 11 0 0 1 0 1 1 0 8 0 pfstate 328 11 0 0 1 0 1 1 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 168 0 47 11 0 11 11 0 8 2 art_table 32 169 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 1424 0 20 46 0 46 46 0 8 0 ffsino 272 1424 0 20 94 0 94 94 0 8 0 nchpl 144 1650 0 38 60 0 60 60 0 8 0 uvmvnodes 72 1434 0 0 27 0 27 27 0 8 0 vnodes 208 1434 0 0 76 0 76 76 0 8 0 namei 1024 4157 0 4157 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4129 0 4129 2 1 1 2 0 8 1 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 432 225 0 213 2 0 2 2 0 8 0 futexpl 56 6 0 6 1 0 1 1 0 8 1 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 48 74 0 68 1 0 1 1 0 8 0 pipepl 120 148 0 139 1 0 1 1 0 8 0 fdescpl 496 226 0 213 3 0 3 3 0 8 0 filepl 152 1138 0 1085 3 0 3 3 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 19 0 9 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 52 0 43 1 0 1 1 0 8 0 zombiepl 144 213 0 212 1 0 1 1 0 8 0 processpl 896 241 0 212 4 0 4 4 0 8 0 procpl 632 251 0 214 4 0 4 4 0 8 0 srpgc 64 2 0 2 1 0 1 1 0 8 1 sockpl 400 81 0 63 2 0 2 2 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 68 0 0 9 0 9 9 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 134 0 0 7 0 7 7 0 8 0 bufpl 280 5947 0 1340 330 0 330 330 0 8 0 anonpl 16 22423 0 20834 14 1 13 13 0 125 6 amapchunkpl 152 838 0 771 5 0 5 5 0 158 2 amappl16 192 89 0 65 2 0 2 2 0 8 0 amappl15 184 58 0 55 1 0 1 1 0 8 0 amappl14 176 28 0 24 1 0 1 1 0 8 0 amappl13 168 11 0 9 1 0 1 1 0 8 0 amappl12 160 2 0 2 1 1 0 1 0 8 0 amappl11 152 56 0 41 1 0 1 1 0 8 0 amappl10 144 10 0 8 1 0 1 1 0 8 0 amappl9 136 438 0 435 1 0 1 1 0 8 0 amappl8 128 97 0 85 1 0 1 1 0 8 0 amappl7 120 100 0 89 1 0 1 1 0 8 0 amappl6 112 58 0 52 1 0 1 1 0 8 0 amappl5 104 127 0 114 1 0 1 1 0 8 0 amappl4 96 500 0 471 2 0 2 2 0 8 1 amappl3 88 123 0 116 1 0 1 1 0 8 0 amappl2 80 959 0 895 3 0 3 3 0 8 1 amappl1 72 15306 0 14879 26 8 18 21 0 8 8 amappl 80 479 0 451 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 24 226 0 213 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 226 0 213 1 0 1 1 0 8 0 vmmpekpl 168 6208 0 6183 2 0 2 2 0 8 0 vmmpepl 168 33242 0 32302 90 8 82 82 0 357 40 vmsppl 368 225 0 212 2 0 2 2 0 8 0 pdppl 4096 459 0 424 6 0 6 6 0 8 1 pvpl 32 112712 0 108791 116 1 115 115 0 265 81 pmappl 232 225 0 212 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 142 0 3 4 0 4 4 0 8 0 ddb{0}>