kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sun May 17 04:11:08 PDT 2020 OpenBSD/amd64 (ci-openbsd-main-1.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.10.46' (ECDSA) to the list of known hosts. 2020/05/17 04:11:17 parsed 1 programs 2020/05/17 04:11:21 executed programs: 0 login: panic: receive 3: so 0xfffffd805e561320, so_type 3, m 0xfffffd805c0d4300, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *477487 16154 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821d1ef4) at panic+0x15c soreceive(fffffd805e561320,0,ffff80001d772908,0,0,ffff80001d772814) at soreceive+0x16e7 soo_read(fffffd80669f2780,ffff80001d772908,0) at soo_read+0x53 dofilereadv(ffff80001d739c38,6,ffff80001d772908,0,ffff80001d7729f0) at dofilereadv+0x1a1 sys_read(ffff80001d739c38,ffff80001d7729a0,ffff80001d7729f0) at sys_read+0x83 syscall(ffff80001d772a70) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0830, 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 0xfffffd805e561320, so_type 3, m 0xfffffd805c0d4300, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821d1ef4) at panic+0x15c soreceive(fffffd805e561320,0,ffff80001d772908,0,0,ffff80001d772814) at soreceive+0x16e7 soo_read(fffffd80669f2780,ffff80001d772908,0) at soo_read+0x53 dofilereadv(ffff80001d739c38,6,ffff80001d772908,0,ffff80001d7729f0) at dofilereadv+0x1a1 sys_read(ffff80001d739c38,ffff80001d7729a0,ffff80001d7729f0) at sys_read+0x83 syscall(ffff80001d772a70) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0830, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d772650 rbx 0xffff80001d772700 rdx 0x2 rcx 0 rax 0x1 r8 0xffffffff81e7465f kprintf+0x15f r9 0x1 r10 0x2 r11 0xa2087ae39c65cf31 r12 0x3000000008 r13 0xffff80001d772660 r14 0x100 r15 0x1 rip 0xffffffff818c51a8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d772640 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=477487 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d739758,0xffff80001d739eb8 process=0xffff8000ffffa3a8 user=0xffff80001d76d000, vmspace=0xfffffd806bc09550 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 16539 279906 98411 0 3 0x82 thrsleep syz-execprog 16539 151457 98411 0 3 0x4000082 thrsleep syz-execprog 16539 127513 98411 0 3 0x4000082 thrsleep syz-execprog 16539 136170 98411 0 3 0x4000082 thrsleep syz-execprog 16539 33896 98411 0 3 0x4000082 wait syz-execprog 16539 484526 98411 0 3 0x4000082 kqread syz-execprog 16539 140602 98411 0 3 0x4000082 thrsleep syz-execprog 98411 115447 46429 0 3 0x10008a pause ksh 46429 440274 25586 0 3 0x92 select sshd 37028 98652 1 0 3 0x100083 ttyin getty 25586 156788 1 0 3 0x80 select sshd 55722 182339 15383 73 3 0x100090 kqread syslogd 15383 270216 1 0 3 0x100082 netio syslogd 83969 65436 1 77 2 0x100010 dhclient *16154 477487 1 0 7 0 dhclient 55254 366113 0 0 3 0x14200 bored smr 13680 455288 0 0 3 0x14200 pgzero zerothread 8498 515800 0 0 3 0x14200 aiodoned aiodoned 54587 408556 0 0 3 0x14200 syncer update 74246 345913 0 0 3 0x14200 cleaner cleaner 62463 28774 0 0 3 0x14200 reaper reaper 40251 160909 0 0 3 0x14200 pgdaemon pagedaemon 81676 404310 0 0 3 0x14200 bored crynlk 75296 507891 0 0 3 0x14200 bored crypto 15625 138370 0 0 3 0x40014200 acpi0 acpi0 25107 242284 0 0 2 0x14200 softnet 4094 41191 0 0 2 0x14200 systqmp 78228 258415 0 0 3 0x14200 bored systq 34910 115852 0 0 3 0x40014200 bored softclock 91671 331868 0 0 3 0x40014200 idle0 1 338025 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 65 11K 11K 78643K 837 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 3029K 3093K 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 256 145 0 0 10 0 10 10 0 8 0 art_table 32 146 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 1631 0 39 60 0 60 60 0 8 1 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 3915 0 3915 1 0 1 1 0 8 1 scxspl 192 3672 0 3672 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 120 973 0 922 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 5494 0 5463 7 2 5 7 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9603 0 9525 8 1 7 7 0 8 0 bufpl 280 2892 0 126 198 0 198 198 0 8 0 anonpl 16 20234 0 18748 14 2 12 12 0 107 4 amapchunkpl 152 761 0 702 4 0 4 4 0 158 0 amappl16 192 121 0 95 2 0 2 2 0 8 0 amappl15 184 3 0 1 1 0 1 1 0 8 0 amappl14 176 27 0 22 1 0 1 1 0 8 0 amappl13 168 18 0 17 1 0 1 1 0 8 0 amappl12 160 9 0 6 1 0 1 1 0 8 0 amappl11 152 42 0 33 1 0 1 1 0 8 0 amappl10 144 10 0 7 1 0 1 1 0 8 0 amappl9 136 197 0 196 1 0 1 1 0 8 0 amappl8 128 242 0 234 1 0 1 1 0 8 0 amappl7 120 104 0 93 1 0 1 1 0 8 0 amappl6 112 25 0 22 1 0 1 1 0 8 0 amappl5 104 179 0 170 1 0 1 1 0 8 0 amappl4 96 422 0 402 1 0 1 1 0 8 0 amappl3 88 105 0 100 1 0 1 1 0 8 0 amappl2 80 805 0 751 2 0 2 2 0 8 0 amappl1 72 13714 0 13318 22 5 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 6149 0 6130 1 0 1 1 0 8 0 vmmpepl 168 28988 0 28149 73 4 69 69 0 357 31 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 104922 0 101221 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(ffffffff821d1ef4) at panic+0x15c soreceive(fffffd805e561320,0,ffff80001d772908,0,0,ffff80001d772814) at soreceive+0x16e7 soo_read(fffffd80669f2780,ffff80001d772908,0) at soo_read+0x53 dofilereadv(ffff80001d739c38,6,ffff80001d772908,0,ffff80001d7729f0) at dofilereadv+0x1a1 sys_read(ffff80001d739c38,ffff80001d7729a0,ffff80001d7729f0) at sys_read+0x83 syscall(ffff80001d772a70) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0830, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821d1ef4) at panic+0x15c soreceive(fffffd805e561320,0,ffff80001d772908,0,0,ffff80001d772814) at soreceive+0x16e7 soo_read(fffffd80669f2780,ffff80001d772908,0) at soo_read+0x53 dofilereadv(ffff80001d739c38,6,ffff80001d772908,0,ffff80001d7729f0) at dofilereadv+0x1a1 sys_read(ffff80001d739c38,ffff80001d7729a0,ffff80001d7729f0) at sys_read+0x83 syscall(ffff80001d772a70) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0830, count: -8 ddb>