kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Jun 5 16:37:23 PDT 2020 OpenBSD/amd64 (ci-openbsd-main-1.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.16' (ECDSA) to the list of known hosts. 2020/06/05 16:37:35 parsed 1 programs 2020/06/05 16:37:38 executed programs: 0 login: panic: receive 3: so 0xfffffd80669c0190, so_type 3, m 0xfffffd8066df5500, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 30943 25985 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821c06e7) at panic+0x15c soreceive(fffffd80669c0190,0,ffff80001d7620c8,0,0,ffff80001d761fd4) at soreceive+0x16e7 soo_read(fffffd80669f4690,ffff80001d7620c8,0) at soo_read+0x53 dofilereadv(ffff80001d7294e8,6,ffff80001d7620c8,0,ffff80001d7621b0) at dofilereadv+0x1a1 sys_read(ffff80001d7294e8,ffff80001d762160,ffff80001d7621b0) at sys_read+0x83 syscall(ffff80001d762230) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc4920, 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 0xfffffd80669c0190, so_type 3, m 0xfffffd8066df5500, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821c06e7) at panic+0x15c soreceive(fffffd80669c0190,0,ffff80001d7620c8,0,0,ffff80001d761fd4) at soreceive+0x16e7 soo_read(fffffd80669f4690,ffff80001d7620c8,0) at soo_read+0x53 dofilereadv(ffff80001d7294e8,6,ffff80001d7620c8,0,ffff80001d7621b0) at dofilereadv+0x1a1 sys_read(ffff80001d7294e8,ffff80001d762160,ffff80001d7621b0) at sys_read+0x83 syscall(ffff80001d762230) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc4920, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d761e10 rbx 0xffff80001d761ec0 rdx 0x2 rcx 0 rax 0x1 r8 0xffffffff81cd589f kprintf+0x15f r9 0x1 r10 0x2 r11 0xdc9d423c0b0381b0 r12 0x3000000008 r13 0xffff80001d761e20 r14 0x100 r15 0x1 rip 0xffffffff81264068 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d761e00 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=30943 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d72a388,0xffff80001d729288 process=0xffff8000ffffa3a8 user=0xffff80001d75d000, vmspace=0xfffffd806bc0a880 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 18849 80109 53918 0 3 0x82 wait syz-execprog 18849 211459 53918 0 3 0x4000082 thrsleep syz-execprog 18849 368567 53918 0 3 0x4000082 thrsleep syz-execprog 18849 497935 53918 0 3 0x4000082 thrsleep syz-execprog 18849 142621 53918 0 3 0x4000082 thrsleep syz-execprog 18849 434776 53918 0 3 0x4000082 kqread syz-execprog 18849 207162 53918 0 3 0x4000082 thrsleep syz-execprog 53918 263552 54316 0 3 0x10008a pause ksh 54316 427929 16456 0 3 0x92 select sshd 40110 20595 1 0 3 0x100083 ttyin getty 16456 247675 1 0 3 0x80 select sshd 59965 516306 19342 73 3 0x100090 kqread syslogd 19342 191777 1 0 3 0x100082 netio syslogd 99999 263530 1 77 2 0x100010 dhclient *25985 30943 1 0 7 0 dhclient 25990 100823 0 0 3 0x14200 bored smr 51737 361621 0 0 3 0x14200 pgzero zerothread 44965 524250 0 0 3 0x14200 aiodoned aiodoned 77207 318335 0 0 3 0x14200 syncer update 4766 408770 0 0 3 0x14200 cleaner cleaner 13147 298447 0 0 3 0x14200 reaper reaper 62649 84889 0 0 3 0x14200 pgdaemon pagedaemon 1598 234196 0 0 3 0x14200 bored crynlk 12827 255143 0 0 3 0x14200 bored crypto 11614 109053 0 0 3 0x40014200 acpi0 acpi0 38708 223174 0 0 2 0x14200 softnet 16881 496961 0 0 2 0x14200 systqmp 8960 150539 0 0 3 0x14200 bored systq 52312 92672 0 0 3 0x40014200 bored softclock 37857 39752 0 0 3 0x40014200 idle0 1 57446 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 9442 6321K 6321K 78643K 10543 0 pcb 13 8K 8K 78643K 13 0 rtable 61 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 1182 74K 74K 78643K 1187 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 1809 195K 288K 78643K 12938 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 67 11K 12K 78643K 836 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 3025K 3089K 78643K 1623 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 12 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 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 144 0 0 9 0 9 9 0 8 0 art_table 32 145 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 dino2pl 256 1415 0 22 88 0 88 88 0 8 0 ffsino 240 1415 0 22 82 0 82 82 0 8 0 nchpl 144 1633 0 39 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 3923 0 3923 1 0 1 1 0 8 1 scxspl 192 3688 0 3688 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 424 212 0 186 4 0 4 4 0 8 0 knotepl 112 47 0 38 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipelkpl 16 70 0 64 1 0 1 1 0 8 0 pipepl 120 140 0 129 1 0 1 1 0 8 0 fdescpl 432 198 0 186 2 0 2 2 0 8 0 filepl 120 980 0 929 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 57 0 50 1 0 1 1 0 8 0 zombiepl 144 187 0 186 1 0 1 1 0 8 0 processpl 920 212 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 5524 0 5493 7 2 5 7 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9655 0 9575 9 2 7 7 0 8 0 bufpl 280 2899 0 126 199 0 199 199 0 8 0 anonpl 16 20207 0 18701 14 2 12 12 0 107 4 amapchunkpl 152 704 0 644 4 0 4 4 0 158 1 amappl16 192 134 0 103 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 27 0 23 1 0 1 1 0 8 0 amappl13 168 21 0 19 1 0 1 1 0 8 0 amappl12 160 5 0 3 1 0 1 1 0 8 0 amappl11 152 43 0 34 1 0 1 1 0 8 0 amappl10 144 10 0 7 1 0 1 1 0 8 0 amappl9 136 217 0 216 1 0 1 1 0 8 0 amappl8 128 234 0 228 1 0 1 1 0 8 0 amappl7 120 111 0 100 1 0 1 1 0 8 0 amappl6 112 24 0 21 1 0 1 1 0 8 0 amappl5 104 136 0 127 1 0 1 1 0 8 0 amappl4 96 431 0 406 1 0 1 1 0 8 0 amappl3 88 106 0 100 1 0 1 1 0 8 0 amappl2 80 795 0 742 2 0 2 2 0 8 0 amappl1 72 13637 0 13241 23 6 17 17 0 8 7 amappl 80 418 0 393 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 6134 0 6114 1 0 1 1 0 8 0 vmmpepl 168 29107 0 28266 75 6 69 69 0 357 30 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 104637 0 100917 102 0 102 102 0 265 69 pmappl 200 197 0 186 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 215 0 6 6 0 6 6 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821c06e7) at panic+0x15c soreceive(fffffd80669c0190,0,ffff80001d7620c8,0,0,ffff80001d761fd4) at soreceive+0x16e7 soo_read(fffffd80669f4690,ffff80001d7620c8,0) at soo_read+0x53 dofilereadv(ffff80001d7294e8,6,ffff80001d7620c8,0,ffff80001d7621b0) at dofilereadv+0x1a1 sys_read(ffff80001d7294e8,ffff80001d762160,ffff80001d7621b0) at sys_read+0x83 syscall(ffff80001d762230) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc4920, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821c06e7) at panic+0x15c soreceive(fffffd80669c0190,0,ffff80001d7620c8,0,0,ffff80001d761fd4) at soreceive+0x16e7 soo_read(fffffd80669f4690,ffff80001d7620c8,0) at soo_read+0x53 dofilereadv(ffff80001d7294e8,6,ffff80001d7620c8,0,ffff80001d7621b0) at dofilereadv+0x1a1 sys_read(ffff80001d7294e8,ffff80001d762160,ffff80001d7621b0) at sys_read+0x83 syscall(ffff80001d762230) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc4920, count: -8 ddb>