From owner-freebsd-bugs  Sun Jun 20 23:15: 3 1999
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From: dirk.meyer@dinoex.sub.org (Dirk Meyer)
Organization: privat
Subject: Re: kern/12247: userlevel program let kernel hang
Date: Mon, 21 Jun 1999 07:39:52 +0200
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I wrote:
> >Only if gdb try to exit in the second time,
> >It keep hangin and kann be killed with <CTRL-C>
> >the debugged application will terminate too.
> >But the system keep runninng as intended.

Bruce Evans wrote:
> I think it is a bug in PT_ATTACH or PT_DETACH, since gdb hangs waiting
> for the "hangme" process after it (gdb) issues PT_ATTACH the second time.

I looked briefly over the code, and find a point I have to ask for.
PT_DETACH reset the P_WAITED flag in sys/kern/sys_process.c, line 358.
Does this harm if a process is already waiting for a signal?

kind regards Dirk

-- Dirk Meyer, Im Grund 4, 34317 Habichtswald, Germany
-- Tel. +49-5606-6512



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