kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Jan 10 10:39:30 PST 2020 OpenBSD/amd64 (ci-openbsd-multicore-3.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.115' (ECDSA) to the list of known hosts. 2020/01/10 10:39:40 parsed 1 programs 2020/01/10 10:39:47 executed programs: 0 login: panic: receive 3: so 0xfffffd806f665480, so_type 3, m 0xfffffd806d738400, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 225757 32054 0 0x2 0x4000000 0 syz-execprog *306062 37693 0 0 0 1K dhclient db_enter() at db_enter+0x18 panic(ffffffff821b27b2) at panic+0x15c soreceive(fffffd806f665480,0,ffff800020abd4d8,0,0,ffff800020abd3e4) at soreceive+0x1727 soo_read(fffffd8078dfe000,ffff800020abd4d8,0) at soo_read+0x53 dofilereadv(ffff800020a773c8,6,ffff800020abd4d8,0,ffff800020abd5c0) at dofilereadv+0x1a2 sys_read(ffff800020a773c8,ffff800020abd570,ffff800020abd5c0) at sys_read+0x83 syscall(ffff800020abd640) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffa6a0, 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 0xfffffd806f665480, so_type 3, m 0xfffffd806d738400, m_type 0 ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff821b27b2) at panic+0x15c soreceive(fffffd806f665480,0,ffff800020abd4d8,0,0,ffff800020abd3e4) at soreceive+0x1727 soo_read(fffffd8078dfe000,ffff800020abd4d8,0) at soo_read+0x53 dofilereadv(ffff800020a773c8,6,ffff800020abd4d8,0,ffff800020abd5c0) at dofilereadv+0x1a2 sys_read(ffff800020a773c8,ffff800020abd570,ffff800020abd5c0) at sys_read+0x83 syscall(ffff800020abd640) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffa6a0, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020abd220 rbx 0xffff800020abd2d0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff82033a4f kprintf+0x16f r9 0x1 r10 0x528fe0672aa07ddf r11 0x94dcc18e6aa033d2 r12 0x3000000008 r13 0xffff800020abd230 r14 0x100 r15 0x1 rip 0xffffffff814d75b8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020abd210 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (dhclient) pid=306062 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020a764f8,0xffff800020a77650 process=0xffff800020aa2010 user=0xffff800020ab8000, vmspace=0xfffffd807efff170 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 32054 223491 59750 0 3 0x82 thrsleep syz-execprog 32054 94465 59750 0 3 0x4000082 nanosleep syz-execprog 32054 368142 59750 0 3 0x4000082 thrsleep syz-execprog 32054 195952 59750 0 3 0x4000082 thrsleep syz-execprog 32054 492872 59750 0 3 0x4000082 thrsleep syz-execprog 32054 28615 59750 0 3 0x4000082 thrsleep syz-execprog 32054 435889 59750 0 3 0x4000082 thrsleep syz-execprog 32054 103707 59750 0 3 0x4000082 nanosleep syz-execprog 32054 225757 59750 0 7 0x4000002 syz-execprog 59750 521134 13937 0 3 0x10008a pause ksh 13937 502721 85460 0 3 0x92 select sshd 33414 276100 1 0 3 0x100083 ttyin getty 85460 466218 1 0 3 0x80 select sshd 64562 475405 76268 74 3 0x100092 bpf pflogd 76268 140514 1 0 3 0x80 netio pflogd 12393 221221 98718 73 3 0x100090 kqread syslogd 98718 426928 1 0 3 0x100082 netio syslogd 62798 89499 1 77 3 0x100090 poll dhclient *37693 306062 1 0 7 0 dhclient 76236 91343 0 0 3 0x14200 pgzero zerothread 95902 339289 0 0 3 0x14200 aiodoned aiodoned 34525 365847 0 0 3 0x14200 syncer update 95304 145987 0 0 3 0x14200 cleaner cleaner 96777 200408 0 0 3 0x14200 reaper reaper 85528 404977 0 0 3 0x14200 pgdaemon pagedaemon 36428 172173 0 0 3 0x14200 bored crynlk 4949 390259 0 0 3 0x14200 bored crypto 72789 447795 0 0 3 0x40014200 acpi0 acpi0 57252 189905 0 0 3 0x40014200 idle1 73073 432722 0 0 3 0x14200 bored softnet 2909 50780 0 0 3 0x14200 bored systqmp 68970 446134 0 0 3 0x14200 bored systq 38739 407918 0 0 3 0x40014200 bored softclock 4874 414614 0 0 3 0x40014200 idle0 33737 449968 0 0 3 0x14200 bored smr 1 175805 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 37693 (dhclient) thread 0xffff800020a773c8 (306062) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82645020) #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 74 3K 12K 78643K 970 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 2997K 3061K 78643K 3317 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 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 10 0 0 1 0 1 1 0 8 0 pfstkey 112 10 0 0 1 0 1 1 0 8 0 pfstate 328 10 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 256 167 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 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 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 4160 0 4160 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4110 0 4110 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 28 1 0 1 1 0 8 0 kqueuepl 104 2 0 0 1 0 1 1 0 8 0 pipelkpl 48 74 0 67 1 0 1 1 0 8 0 pipepl 120 148 0 138 1 0 1 1 0 8 0 fdescpl 496 226 0 213 3 0 3 3 0 8 0 filepl 152 1138 0 1083 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 384 80 0 62 2 0 2 2 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 77 0 0 10 0 10 10 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 136 0 0 8 0 8 8 0 8 0 bufpl 280 5948 0 1340 330 0 330 330 0 8 0 anonpl 16 22587 0 20994 14 1 13 13 0 125 6 amapchunkpl 152 870 0 804 5 0 5 5 0 158 2 amappl16 192 101 0 74 2 0 2 2 0 8 0 amappl15 184 62 0 58 1 0 1 1 0 8 0 amappl14 176 27 0 24 1 0 1 1 0 8 0 amappl12 160 6 0 6 1 1 0 1 0 8 0 amappl11 152 59 0 44 1 0 1 1 0 8 0 amappl10 144 18 0 15 1 0 1 1 0 8 0 amappl9 136 440 0 439 1 0 1 1 0 8 0 amappl8 128 94 0 83 1 0 1 1 0 8 0 amappl7 120 101 0 89 1 0 1 1 0 8 0 amappl6 112 60 0 55 1 0 1 1 0 8 0 amappl5 104 124 0 110 1 0 1 1 0 8 0 amappl4 96 501 0 472 1 0 1 1 0 8 0 amappl3 88 124 0 116 1 0 1 1 0 8 0 amappl2 80 962 0 901 3 0 3 3 0 8 1 amappl1 72 15264 0 14835 27 9 18 21 0 8 8 amappl 80 474 0 448 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 6185 0 6161 2 0 2 2 0 8 0 vmmpepl 168 33177 0 32244 86 4 82 82 0 357 37 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 112867 0 108907 116 0 116 116 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}>