kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Tue Apr 2 08:15:09 PDT 2019 OpenBSD/amd64 (ci-openbsd-multicore-9.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.67' (ECDSA) to the list of known hosts. 2019/04/02 08:15:59 parsed 1 programs 2019/04/02 08:16:05 executed programs: 0 login: panic: timeout_add: to_ticks (-400) < 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *114612 59472 0 0 0 0K syz-executor.0 db_enter() at db_enter+0x18 panic() at panic+0x174 timeout_add(ffff800020b14300,fffffe70) at timeout_add+0x194 msleep(ffff80000091d200,ffff80000091d208,11a,ffffffff81f93f9b,fffffe70) at msleep+0xdd bpfread(31700,ffff800020bff500,0) at bpfread+0x23f spec_read(ffff800020bff340) at spec_read+0xfd VOP_READ(fffffd806ab96d68,ffff800020bff500,0,fffffd807f7c6a80) at VOP_READ+0x6f vn_read(fffffd806d07ad20,ffff800020bff500,0) at vn_read+0x1c3 dofilereadv(ffff800020b14260,3,ffff800020bff500,0,ffff800020bff5e0) at dofilereadv+0x19f sys_read(ffff800020b14260,ffff800020bff5f8,ffff800020bff5e0) at sys_read+0x92 syscall(ffff800020bff690) at syscall+0x5b8 Xsyscall(6,0,ffffffffffffffb9,0,3,ef378d1e010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd5eb0, count: 3 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic timeout_add: to_ticks (-400) < 0 ddb{0}> trace db_enter() at db_enter+0x18 panic() at panic+0x174 timeout_add(ffff800020b14300,fffffe70) at timeout_add+0x194 msleep(ffff80000091d200,ffff80000091d208,11a,ffffffff81f93f9b,fffffe70) at msleep+0xdd bpfread(31700,ffff800020bff500,0) at bpfread+0x23f spec_read(ffff800020bff340) at spec_read+0xfd VOP_READ(fffffd806ab96d68,ffff800020bff500,0,fffffd807f7c6a80) at VOP_READ+0x6f vn_read(fffffd806d07ad20,ffff800020bff500,0) at vn_read+0x1c3 dofilereadv(ffff800020b14260,3,ffff800020bff500,0,ffff800020bff5e0) at dofilereadv+0x19f sys_read(ffff800020b14260,ffff800020bff5f8,ffff800020bff5e0) at sys_read+0x92 syscall(ffff800020bff690) at syscall+0x5b8 Xsyscall(6,0,ffffffffffffffb9,0,3,ef378d1e010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd5eb0, count: -12 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020bff060 rbx 0xffff800020bff110 rdx 0xffffffff81f8bb72 apollo_pio_rec+0x9b0d rcx 0x201 rax 0x1 r8 0xffffffff8106e1a3 kprintf+0x183 r9 0x1 r10 0x5c85650657c7956f r11 0x1d3d0f2f56300992 r12 0x3000000008 r13 0xffff800020bff070 r14 0x100 r15 0x1 rip 0xffffffff819c3ce8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020bff050 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=114612 stat=onproc flags process=0 proc=0 pri=26, usrpri=50, nice=20 forw=0x0, list=0xffff800020b14bc0,0xffffffff823811f0 process=0xffff800020b8c018 user=0xffff800020bfa000, vmspace=0xfffffd807effe438 estcpu=3, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *59472 114612 1899 0 7 0 bpf syz-executor.0 1899 435164 11523 0 3 0x82 nanosleep syz-executor.0 11523 117351 34581 0 3 0x82 thrsleep syz-execprog 11523 8833 34581 0 3 0x4000082 thrsleep syz-execprog 11523 82376 34581 0 3 0x4000082 thrsleep syz-execprog 11523 341802 34581 0 3 0x4000082 thrsleep syz-execprog 11523 19715 34581 0 3 0x4000082 thrsleep syz-execprog 11523 136420 34581 0 3 0x4000082 thrsleep syz-execprog 11523 80059 34581 0 3 0x4000082 kqread syz-execprog 11523 460549 34581 0 3 0x4000082 thrsleep syz-execprog 34581 286438 1269 0 3 0x10008a pause ksh 1269 486796 15142 0 3 0x92 select sshd 36310 44973 1 0 3 0x100083 ttyin getty 15142 319396 1 0 3 0x80 select sshd 23359 462114 94461 74 3 0x100092 bpf pflogd 94461 84369 1 0 3 0x80 netio pflogd 10605 261009 5283 73 3 0x100090 kqread syslogd 5283 523213 1 0 3 0x100082 netio syslogd 11621 127801 1 77 3 0x100090 poll dhclient 35737 11354 1 0 3 0x80 poll dhclient 99271 449686 0 0 3 0x14200 pgzero zerothread 44571 186610 0 0 3 0x14200 aiodoned aiodoned 45681 506201 0 0 3 0x14200 syncer update 15150 242101 0 0 3 0x14200 cleaner cleaner 27233 98078 0 0 3 0x14200 reaper reaper 30358 249621 0 0 3 0x14200 pgdaemon pagedaemon 13895 98106 0 0 3 0x14200 bored crynlk 72492 221882 0 0 3 0x14200 bored crypto 54370 5951 0 0 3 0x40014200 acpi0 acpi0 16714 514752 0 0 7 0x40014200 idle1 80234 367659 0 0 3 0x14200 bored softnet 42038 386256 0 0 3 0x14200 bored systqmp 26450 447048 0 0 3 0x14200 bored systq 35041 103520 0 0 3 0x40014200 bored softclock 28777 279007 0 0 3 0x40014200 idle0 30015 505533 0 0 3 0x14200 bored smr 1 326504 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}>