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To: pirat sriyotha <pirat@access.inet.co.th>
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Date: 03 Oct 2005 10:27:45 -0400
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Cc: questions@FreeBSD.ORG
Subject: Re: chflags uid 0 exited on signal 12 (core dump) Bad system call
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pirat sriyotha <pirat@access.inet.co.th> writes:

> hi sirs,
> 
> i am upgrading my other machine from 4.9 to 4.11
> and it produced the above message during make installkernel.
> 
> so what is the solution to this error ?  it appears to many places unexpectedly.
>  and when i reboot once again, still 4.9, i get that same error message
> hightlighted durinh the boot sequences before login: prompt.

You obviously installed something *before* doing the installkernel.
What was it?  /bin/chflags?  How did you do that exactly?