kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sun Jun 7 00:42:03 PDT 2020 OpenBSD/amd64 (ci-openbsd-main-6.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.211' (ECDSA) to the list of known hosts. 2020/06/07 00:42:14 parsed 1 programs 2020/06/07 00:42:18 executed programs: 0 login: panic: receive 1a: so 0xfffffd805e5584b0, so_type 3, m 0xfffffd805a88de00, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 95304 30458 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821cfa29) at panic+0x15c soreceive(fffffd805e5584b0,0,ffff80001d761f68,0,0,ffff80001d761e74) at soreceive+0x170a soo_read(fffffd80653f4780,ffff80001d761f68,0) at soo_read+0x53 dofilereadv(ffff80001d729008,6,ffff80001d761f68,0,ffff80001d762050) at dofilereadv+0x1a1 sys_read(ffff80001d729008,ffff80001d762000,ffff80001d762050) at sys_read+0x83 syscall(ffff80001d7620d0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdcf50, 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 1a: so 0xfffffd805e5584b0, so_type 3, m 0xfffffd805a88de00, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821cfa29) at panic+0x15c soreceive(fffffd805e5584b0,0,ffff80001d761f68,0,0,ffff80001d761e74) at soreceive+0x170a soo_read(fffffd80653f4780,ffff80001d761f68,0) at soo_read+0x53 dofilereadv(ffff80001d729008,6,ffff80001d761f68,0,ffff80001d762050) at dofilereadv+0x1a1 sys_read(ffff80001d729008,ffff80001d762000,ffff80001d762050) at sys_read+0x83 syscall(ffff80001d7620d0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdcf50, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d761cb0 rbx 0xffff80001d761d60 rdx 0x2 rcx 0 rax 0x1 r8 0xffffffff813a55ef kprintf+0x15f r9 0x1 r10 0x2 r11 0x41c6389789aaaaed r12 0x3000000008 r13 0xffff80001d761cc0 r14 0x100 r15 0x1 rip 0xffffffff812bfa38 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d761ca0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=95304 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d72a118,0xffff80001d729768 process=0xffff8000ffffa3a8 user=0xffff80001d75d000, vmspace=0xfffffd806bc0a220 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 97737 399428 8342 0 3 0x82 wait syz-execprog 97737 66277 8342 0 3 0x4000082 thrsleep syz-execprog 97737 483400 8342 0 3 0x4000082 thrsleep syz-execprog 97737 282496 8342 0 3 0x4000082 thrsleep syz-execprog 97737 472412 8342 0 3 0x4000082 thrsleep syz-execprog 97737 502558 8342 0 3 0x4000082 kqread syz-execprog 97737 94914 8342 0 3 0x4000082 thrsleep syz-execprog 97737 258378 8342 0 3 0x4000082 thrsleep syz-execprog 8342 444604 43926 0 3 0x10008a pause ksh 43926 152811 98427 0 3 0x92 select sshd 43987 439631 1 0 3 0x100083 ttyin getty 98427 135847 1 0 3 0x80 select sshd 4751 218105 44676 73 3 0x100090 kqread syslogd 44676 431284 1 0 3 0x100082 netio syslogd 81597 444248 1 77 2 0x100010 dhclient *30458 95304 1 0 7 0 dhclient 64088 233783 0 0 3 0x14200 bored smr 35842 369075 0 0 3 0x14200 pgzero zerothread 85914 395590 0 0 3 0x14200 aiodoned aiodoned 15951 229840 0 0 3 0x14200 syncer update 49577 19601 0 0 3 0x14200 cleaner cleaner 50203 302281 0 0 3 0x14200 reaper reaper 71059 52897 0 0 3 0x14200 pgdaemon pagedaemon 20388 148442 0 0 3 0x14200 bored crynlk 57356 300901 0 0 3 0x14200 bored crypto 38606 422318 0 0 3 0x40014200 acpi0 acpi0 98923 411722 0 0 2 0x14200 softnet 74044 299274 0 0 2 0x14200 systqmp 99281 363098 0 0 3 0x14200 bored systq 62250 484723 0 0 3 0x40014200 bored softclock 67999 473270 0 0 3 0x40014200 idle0 1 299717 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 68 11K 12K 78643K 838 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 1620 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 21 88 0 88 88 0 8 0 ffsino 240 1415 0 21 82 0 82 82 0 8 0 nchpl 144 1633 0 36 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 3919 0 3919 1 0 1 1 0 8 1 scxspl 192 3694 0 3694 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 120 978 0 927 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 624 219 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 5528 0 5493 8 2 6 8 0 8 1 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9617 0 9534 8 1 7 7 0 8 0 bufpl 280 2898 0 125 199 0 199 199 0 8 0 anonpl 16 20308 0 18836 14 2 12 12 0 107 4 amapchunkpl 152 766 0 706 4 0 4 4 0 158 1 amappl16 192 127 0 100 2 0 2 2 0 8 0 amappl15 184 3 0 1 1 0 1 1 0 8 0 amappl14 176 28 0 24 1 0 1 1 0 8 0 amappl13 168 20 0 18 1 0 1 1 0 8 0 amappl12 160 10 0 8 1 0 1 1 0 8 0 amappl11 152 42 0 33 1 0 1 1 0 8 0 amappl10 144 12 0 8 1 0 1 1 0 8 0 amappl9 136 214 0 211 1 0 1 1 0 8 0 amappl8 128 236 0 228 1 0 1 1 0 8 0 amappl7 120 101 0 91 1 0 1 1 0 8 0 amappl6 112 23 0 21 1 0 1 1 0 8 0 amappl5 104 149 0 140 1 0 1 1 0 8 0 amappl4 96 429 0 404 1 0 1 1 0 8 0 amappl3 88 107 0 102 1 0 1 1 0 8 0 amappl2 80 807 0 756 2 0 2 2 0 8 0 amappl1 72 13662 0 13280 23 6 17 17 0 8 8 amappl 80 419 0 394 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 6126 0 6104 2 0 2 2 0 8 0 vmmpepl 168 28865 0 28045 73 5 68 68 0 357 29 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 104717 0 101016 102 0 102 102 0 265 70 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 5 6 0 6 6 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821cfa29) at panic+0x15c soreceive(fffffd805e5584b0,0,ffff80001d761f68,0,0,ffff80001d761e74) at soreceive+0x170a soo_read(fffffd80653f4780,ffff80001d761f68,0) at soo_read+0x53 dofilereadv(ffff80001d729008,6,ffff80001d761f68,0,ffff80001d762050) at dofilereadv+0x1a1 sys_read(ffff80001d729008,ffff80001d762000,ffff80001d762050) at sys_read+0x83 syscall(ffff80001d7620d0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdcf50, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821cfa29) at panic+0x15c soreceive(fffffd805e5584b0,0,ffff80001d761f68,0,0,ffff80001d761e74) at soreceive+0x170a soo_read(fffffd80653f4780,ffff80001d761f68,0) at soo_read+0x53 dofilereadv(ffff80001d729008,6,ffff80001d761f68,0,ffff80001d762050) at dofilereadv+0x1a1 sys_read(ffff80001d729008,ffff80001d762000,ffff80001d762050) at sys_read+0x83 syscall(ffff80001d7620d0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdcf50, count: -8 ddb>