kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sun May 10 12:09:54 PDT 2020 OpenBSD/amd64 (ci-openbsd-main-3.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.35' (ECDSA) to the list of known hosts. 2020/05/10 12:10:03 parsed 1 programs 2020/05/10 12:10:08 executed programs: 0 login: panic: receive 1a: so 0xfffffd806871e000, so_type 3, m 0xfffffd805b05d200, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *236540 14445 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff821c9bdd) at panic+0x15c soreceive(fffffd806871e000,0,ffff80001d772af8,0,0,ffff80001d772a04) at soreceive+0x170a soo_read(fffffd80687f32d0,ffff80001d772af8,0) at soo_read+0x53 dofilereadv(ffff80001d739c38,6,ffff80001d772af8,0,ffff80001d772be0) at dofilereadv+0x1a1 sys_read(ffff80001d739c38,ffff80001d772b90,ffff80001d772be0) at sys_read+0x83 syscall(ffff80001d772c60) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff1f60, 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 0xfffffd806871e000, so_type 3, m 0xfffffd805b05d200, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821c9bdd) at panic+0x15c soreceive(fffffd806871e000,0,ffff80001d772af8,0,0,ffff80001d772a04) at soreceive+0x170a soo_read(fffffd80687f32d0,ffff80001d772af8,0) at soo_read+0x53 dofilereadv(ffff80001d739c38,6,ffff80001d772af8,0,ffff80001d772be0) at dofilereadv+0x1a1 sys_read(ffff80001d739c38,ffff80001d772b90,ffff80001d772be0) at sys_read+0x83 syscall(ffff80001d772c60) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff1f60, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d772840 rbx 0xffff80001d7728f0 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d772800 r9 0x1 r10 0x634db1a32a90c5d4 r11 0x2690d9502e987f65 r12 0x3000000008 r13 0xffff80001d772850 r14 0x100 r15 0x1 rip 0xffffffff81b226c8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d772830 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=236540 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d739008,0xffff80001d739eb8 process=0xffff8000ffffaad8 user=0xffff80001d76d000, vmspace=0xfffffd806bc09000 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 46763 316122 94194 0 3 0x82 wait syz-execprog 46763 404877 94194 0 3 0x4000082 thrsleep syz-execprog 46763 170324 94194 0 3 0x4000082 thrsleep syz-execprog 46763 282933 94194 0 3 0x4000082 thrsleep syz-execprog 46763 474548 94194 0 3 0x4000082 thrsleep syz-execprog 46763 361480 94194 0 3 0x4000082 kqread syz-execprog 46763 378204 94194 0 3 0x4000082 thrsleep syz-execprog 94194 236012 66148 0 3 0x10008a pause ksh 66148 60870 63479 0 3 0x92 select sshd 25837 130333 1 0 3 0x100083 ttyin getty 63479 494266 1 0 3 0x80 select sshd 11932 416610 40568 73 3 0x100090 kqread syslogd 40568 190847 1 0 3 0x100082 netio syslogd 62878 244845 1 77 2 0x100010 dhclient *14445 236540 1 0 7 0 dhclient 33699 296880 0 0 3 0x14200 bored smr 35497 280222 0 0 3 0x14200 pgzero zerothread 63586 238065 0 0 3 0x14200 aiodoned aiodoned 6080 359779 0 0 3 0x14200 syncer update 91089 421114 0 0 3 0x14200 cleaner cleaner 76743 468590 0 0 3 0x14200 reaper reaper 7962 494229 0 0 3 0x14200 pgdaemon pagedaemon 64611 58736 0 0 3 0x14200 bored crynlk 51530 207529 0 0 3 0x14200 bored crypto 54627 40278 0 0 3 0x40014200 acpi0 acpi0 76582 410155 0 0 2 0x14200 softnet 53159 249429 0 0 2 0x14200 systqmp 17952 252980 0 0 3 0x14200 bored systq 47661 197062 0 0 3 0x40014200 bored softclock 56006 185719 0 0 3 0x40014200 idle0 1 190908 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 9441 6321K 6321K 78643K 10540 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 1808 195K 288K 78643K 12860 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 66 11K 11K 78643K 840 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 1622 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 3665 0 3665 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 5492 0 5464 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9629 0 9553 7 0 7 7 0 8 0 bufpl 280 2892 0 126 198 0 198 198 0 8 0 anonpl 16 20345 0 18863 14 2 12 12 0 107 5 amapchunkpl 152 708 0 649 4 0 4 4 0 158 0 amappl16 192 128 0 103 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 29 0 24 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 44 0 34 1 0 1 1 0 8 0 amappl10 144 15 0 10 1 0 1 1 0 8 0 amappl9 136 213 0 212 1 0 1 1 0 8 0 amappl8 128 237 0 231 1 0 1 1 0 8 0 amappl7 120 104 0 92 1 0 1 1 0 8 0 amappl6 112 26 0 22 1 0 1 1 0 8 0 amappl5 104 149 0 140 1 0 1 1 0 8 0 amappl4 96 428 0 405 1 0 1 1 0 8 0 amappl3 88 106 0 100 1 0 1 1 0 8 0 amappl2 80 772 0 720 2 0 2 2 0 8 0 amappl1 72 13789 0 13402 23 6 17 17 0 8 8 amappl 80 421 0 396 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 6137 0 6116 2 0 2 2 0 8 0 vmmpepl 168 29039 0 28211 72 4 68 68 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 104963 0 101267 102 0 102 102 0 265 70 pmappl 200 197 0 186 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 213 0 4 6 0 6 6 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821c9bdd) at panic+0x15c soreceive(fffffd806871e000,0,ffff80001d772af8,0,0,ffff80001d772a04) at soreceive+0x170a soo_read(fffffd80687f32d0,ffff80001d772af8,0) at soo_read+0x53 dofilereadv(ffff80001d739c38,6,ffff80001d772af8,0,ffff80001d772be0) at dofilereadv+0x1a1 sys_read(ffff80001d739c38,ffff80001d772b90,ffff80001d772be0) at sys_read+0x83 syscall(ffff80001d772c60) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff1f60, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff821c9bdd) at panic+0x15c soreceive(fffffd806871e000,0,ffff80001d772af8,0,0,ffff80001d772a04) at soreceive+0x170a soo_read(fffffd80687f32d0,ffff80001d772af8,0) at soo_read+0x53 dofilereadv(ffff80001d739c38,6,ffff80001d772af8,0,ffff80001d772be0) at dofilereadv+0x1a1 sys_read(ffff80001d739c38,ffff80001d772b90,ffff80001d772be0) at sys_read+0x83 syscall(ffff80001d772c60) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff1f60, count: -8 ddb>