kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Thu Jan 16 21:15:40 PST 2020 OpenBSD/amd64 (ci-openbsd-multicore-1.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.40' (ECDSA) to the list of known hosts. 2020/01/16 21:15:52 parsed 1 programs 2020/01/16 21:15:59 executed programs: 0 login: panic: receive 3: so 0xfffffd806f661640, so_type 3, m 0xfffffd807f01f300, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 218963 16069 0 0x2 0x4000000 0 syz-execprog *231704 23575 0 0 0 1K dhclient db_enter() at db_enter+0x18 panic(ffffffff821b2df1) at panic+0x15c soreceive(fffffd806f661640,0,ffff800020abd908,0,0,ffff800020abd814) at soreceive+0x1727 soo_read(fffffd8073c1d000,ffff800020abd908,0) at soo_read+0x53 dofilereadv(ffff800020a76ed8,6,ffff800020abd908,0,ffff800020abd9f0) at dofilereadv+0x1a2 sys_read(ffff800020a76ed8,ffff800020abd9a0,ffff800020abd9f0) at sys_read+0x83 syscall(ffff800020abda70) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd5490, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic receive 3: so 0xfffffd806f661640, so_type 3, m 0xfffffd807f01f300, m_type 0 ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff821b2df1) at panic+0x15c soreceive(fffffd806f661640,0,ffff800020abd908,0,0,ffff800020abd814) at soreceive+0x1727 soo_read(fffffd8073c1d000,ffff800020abd908,0) at soo_read+0x53 dofilereadv(ffff800020a76ed8,6,ffff800020abd908,0,ffff800020abd9f0) at dofilereadv+0x1a2 sys_read(ffff800020a76ed8,ffff800020abd9a0,ffff800020abd9f0) at sys_read+0x83 syscall(ffff800020abda70) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd5490, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020abd650 rbx 0xffff800020abd700 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff8176834f kprintf+0x16f r9 0x1 r10 0x8e9dc70a6ffe8dc7 r11 0x3710544b46464ebb r12 0x3000000008 r13 0xffff800020abd660 r14 0x100 r15 0x1 rip 0xffffffff81c0cd88 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020abd640 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (dhclient) pid=231704 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020a764f8,0xffff800020a773d8 process=0xffff800020aa2710 user=0xffff800020ab8000, vmspace=0xfffffd807f0002e0 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 16069 23345 79651 0 3 0x82 thrsleep syz-execprog 16069 487299 79651 0 3 0x4000082 nanosleep syz-execprog 16069 470403 79651 0 3 0x4000082 thrsleep syz-execprog 16069 467241 79651 0 3 0x4000082 thrsleep syz-execprog 16069 327649 79651 0 3 0x4000082 thrsleep syz-execprog 16069 301955 79651 0 3 0x4000082 thrsleep syz-execprog 16069 396268 79651 0 3 0x4000082 thrsleep syz-execprog 16069 218963 79651 0 7 0x4000002 syz-execprog 16069 131873 79651 0 3 0x4000082 kqread syz-execprog 79651 107393 26512 0 3 0x10008a pause ksh 26512 49234 51517 0 3 0x92 select sshd 5276 485703 1 0 3 0x100083 ttyin getty 51517 440877 1 0 3 0x80 select sshd 22747 428925 9224 74 3 0x100092 bpf pflogd 9224 82663 1 0 3 0x80 netio pflogd 42786 452304 21778 73 3 0x100090 kqread syslogd 21778 174793 1 0 3 0x100082 netio syslogd 88437 252720 1 77 2 0x100010 dhclient *23575 231704 1 0 7 0 dhclient 90327 385573 0 0 3 0x14200 pgzero zerothread 15596 127622 0 0 3 0x14200 aiodoned aiodoned 11619 474253 0 0 3 0x14200 syncer update 14305 374460 0 0 3 0x14200 cleaner cleaner 37388 458757 0 0 3 0x14200 reaper reaper 2083 54074 0 0 3 0x14200 pgdaemon pagedaemon 42616 3748 0 0 3 0x14200 bored crynlk 43731 420644 0 0 3 0x14200 bored crypto 26257 75613 0 0 3 0x40014200 acpi0 acpi0 73752 151958 0 0 3 0x40014200 idle1 62517 291313 0 0 3 0x14200 bored softnet 95195 357443 0 0 3 0x14200 bored systqmp 21406 393320 0 0 3 0x14200 bored systq 76978 411876 0 0 3 0x40014200 bored softclock 93574 512809 0 0 3 0x40014200 idle0 67346 404329 0 0 3 0x14200 bored smr 1 120122 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 23575 (dhclient) thread 0xffff800020a76ed8 (231704) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82626628) #0 witness_lock+0x52e #1 solock+0x66 #2 soreceive+0xb3a #3 soo_read+0x53 #4 dofilereadv+0x1a2 #5 sys_read+0x83 #6 syscall+0x4a4 #7 Xsyscall+0x128 ddb{1}> 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 67 2K 2K 78643K 167 0 ifaddr 31 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 4K 12K 78643K 969 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{1}> 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 9 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 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 34 0 28 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 1651 0 39 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 4163 0 4163 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4134 0 4134 2 1 1 2 0 8 1 plimitpl 152 15 0 9 1 0 1 1 0 8 0 sigapl 432 225 0 213 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 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 1139 0 1084 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 10 1 0 1 1 0 8 0 pgrppl 48 19 0 10 1 0 1 1 0 8 0 ucredpl 96 52 0 43 1 0 1 1 0 8 0 zombiepl 144 213 0 213 1 0 1 1 0 8 1 processpl 896 241 0 213 4 0 4 4 0 8 0 procpl 632 249 0 213 4 0 4 4 0 8 0 srpgc 64 2 0 0 1 0 1 1 0 8 0 sockpl 400 80 0 62 2 0 2 2 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 69 0 0 9 0 9 9 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 119 0 0 7 0 7 7 0 8 0 bufpl 280 5947 0 1340 330 0 330 330 0 8 0 anonpl 16 22504 0 20899 15 1 14 14 0 125 7 amapchunkpl 152 797 0 731 5 0 5 5 0 158 2 amappl16 192 85 0 57 2 0 2 2 0 8 0 amappl15 184 66 0 62 1 0 1 1 0 8 0 amappl14 176 26 0 23 1 0 1 1 0 8 0 amappl13 168 1 0 0 1 0 1 1 0 8 0 amappl12 160 9 0 7 1 0 1 1 0 8 0 amappl11 152 55 0 40 1 0 1 1 0 8 0 amappl10 144 10 0 8 1 0 1 1 0 8 0 amappl9 136 402 0 400 1 0 1 1 0 8 0 amappl8 128 93 0 81 1 0 1 1 0 8 0 amappl7 120 100 0 90 1 0 1 1 0 8 0 amappl6 112 59 0 53 1 0 1 1 0 8 0 amappl5 104 201 0 187 1 0 1 1 0 8 0 amappl4 96 493 0 467 1 0 1 1 0 8 0 amappl3 88 124 0 117 1 0 1 1 0 8 0 amappl2 80 951 0 891 3 0 3 3 0 8 1 amappl1 72 15333 0 14911 25 7 18 20 0 8 8 amappl 80 476 0 450 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 6184 0 6159 2 0 2 2 0 8 0 vmmpepl 168 33369 0 32446 87 5 82 82 0 357 39 vmsppl 368 225 0 213 2 0 2 2 0 8 0 pdppl 4096 459 0 426 6 0 6 6 0 8 1 pvpl 32 112750 0 108780 117 1 116 116 0 265 81 pmappl 232 225 0 213 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{1}>