From mboxrd@z Thu Jan  1 00:00:00 1970
From: erik quanstrom <quanstro@coraid.com>
Date: Fri, 31 Jul 2009 14:00:25 -0400
To: 9fans@9fans.net
Message-ID: <64332bc783f3dc7dffc16c1266fefea3@coraid.com>
In-Reply-To: <f390245ec5802e1703b4bd6a6b15a6c3@gmx.de>
References: <f390245ec5802e1703b4bd6a6b15a6c3@gmx.de>
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Subject: Re: [9fans] Race condition in /sys/src/9/pc/trap.c?
Topicbox-Message-UUID: 33b65092-ead5-11e9-9d60-3106f5b1d025

> process1:
> 	still in kernel:
> 		memmove(buf, ...)
> 		*fault*
> 		trap()
> 			fault386()
> 				fault() => -1
> 				if(!user){
> 					panic()
> 					*panic*
> 				}
> 				...
> 				postnote()

could you be more specific.  what is your test program,
where is it crashing (if you know), and what is the panic
message, if any?  i must be dense, but i'm confused by
your process diagram.

- erik