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syscall: SIGSYS: bad system call on OpenBSD-current (1/14/2013-snapshot) #4683

gopherbot opened this issue Jan 22, 2013 · 3 comments


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by yourcomputerpal:

Before filing a bug, please check whether it has been fixed since the
latest release. Search the issue tracker and check that you're running the
latest version of Go:

Run "go version" and compare against  If a newer version of Go exists,
install it and retry what you did to reproduce the problem.


What steps will reproduce the problem?
If possible, include a link to a program on
1. Running openbsd snapshot from 1/14/2013, amd64
2. Pulled tip and tried to build with ./make.bash
changeset:   15428:073d912321cc

What is the expected output?
Build the toolchain.

What do you see instead?
SIGSYS: bad system call

        /home/bmercer/go/src/pkg/syscall/asm_openbsd_amd64.s:15 +0x5
syscall.Stat(0xf840062a20, 0xf80000001a, 0xf840078090, 0x0, 0x0, ...)
        /home/bmercer/go/src/pkg/syscall/zsyscall_openbsd_amd64.go:1120 +0x94
os.Stat(0xf840062a20, 0xf80000001a, 0x0, 0x0, 0x0, ...)
        /home/bmercer/go/src/pkg/os/file_unix.go:132 +0x6f
os/exec.findExecutable(0xf840062a20, 0x7f7f0000001a, 0x14, 0x5b45d4, 0x2f000000$
1, ...)
        /home/bmercer/go/src/pkg/os/exec/lp_unix.go:19 +0x2f
os/exec.LookPath(0x5be764, 0x6763636700000005, 0xf840056060, 0xf84006f550, 0x0, 
        /home/bmercer/go/src/pkg/os/exec/lp_unix.go:51 +0x278
        /home/bmercer/go/src/cmd/go/bootstrap.go:1319 +0x501

goroutine 2 [runnable]:
created by runtime.main

Which compiler are you using (5g, 6g, 8g, gccgo)?

Which operating system are you using?
OpenBSD amd64

Which version are you using?  (run 'go version')

Please provide any additional information below.
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Comment 2:

This is rather bizarre - none of the OpenBSD syscalls have changed since September 2012
and the sys_stat syscall has remained unchanged since 2004. I have not been able to
reproduce the issue here. The reporter is attempting to gather some additional

Owner changed to @4a6f656c.

Status changed to WaitingForReply.

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Comment 3 by yourcomputerpal:

I built a -current kernel, deleted my go src tree, did a fresh pull and things are
working. I did find out what was causing the issue and it looks like maybe I pulled
-release instead of -tip. 
6167 go_bootstrap CALL  #251 (obsolete rfork)()
6167 go_bootstrap PSIG  SIGSYS caught handler=0x44655b mask=0<>
6167 go_bootstrap RET   #251 (obsolete rfork) -1 errno 78 Function not implemented
Even though I tried doing an hg up tip, and verified I was on tip, there must have been
some stale binary laying around that had that in it? This can be closed. Thanks

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minux commented Jan 22, 2013

Comment 4:

Status changed to Retracted.

@rsc rsc added this to the Go1.1 milestone Apr 14, 2015
@rsc rsc removed the go1.1 label Apr 14, 2015
@golang golang locked and limited conversation to collaborators Jun 24, 2016
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4 participants