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From: "David Xu" <davidxu@freebsd.org>
To: "Daniel Eischen" <eischen@pcnet1.pcnet.com>,
	<threads@freebsd.org>
References: <Pine.GSO.4.10.10304211030080.11142-100000@pcnet1.pcnet.com>
Date: Mon, 21 Apr 2003 23:01:33 +0800
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Subject: Re: Thread-related LOR in exit1() (fwd)
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----- Original Message -----=20
From: "Daniel Eischen" <eischen@pcnet1.pcnet.com>
To: <threads@freebsd.org>
Cc: <davidxu@freebsd.org>
Sent: Monday, April 21, 2003 10:33 PM
Subject: Thread-related LOR in exit1() (fwd)


> David, did you see this message sent to -current?
>=20
I have committed a fix.

> Also, I have scope system threads running in a simple test.  I'm
> getting EPROCLIM though when trying to create more than 4 or so
> of them (KSEs with their own KSEG).
>=20

Yeah,  sysctl -a |grep kern.threads
should show the reason,  please increase max_groups_per_proc sysctl by =
hand,
I know it's too small. :-)

> Here's the patches to libpthread that I'm currently using along
> with a test program.
>=20
>     http://people.freebsd.org/~deischen/kse/libpthread.diffs
>     http://people.freebsd.org/~deischen/kse/thread_test2.c
>=20
I am going to sleep again,  I will test it tomorrow.
it seems KMF_NOCOMPLETED should be added in _kse_lock_wait().

> --=20
> Dan
>=20
> ---------- Forwarded message ----------
> Date: Mon, 21 Apr 2003 20:25:41 +1000
> From: Tim Robbins <tjr@freebsd.org>
> To: current@freebsd.org
> Subject: Thread-related LOR in exit1()
>=20
> While running a trivial test program linked with libkse that created
> 3 threads:
>=20
> lock order reversal
>  1st 0xc0f0f428 process lock (process lock) @ =
/usr/src/sys/kern/kern_exit.c:134
>  2nd 0xc02f75c0 Giant (Giant) @ /usr/src/sys/kern/kern_exit.c:142
>=20
>=20
> Tim
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>=20
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