From: "David S. Miller" <davem@redhat.com>
To: gilbertd@treblig.org
Cc: dizzy@roedu.net, linux-kernel@vger.kernel.org
Subject: Re: mmap, SIGBUS, and handling it
Date: Fri, 10 May 2002 08:48:09 -0700 (PDT) [thread overview]
Message-ID: <20020510.084809.119196581.davem@redhat.com> (raw)
In-Reply-To: <3CDBED93.3040508@treblig.org>
From: "Dave Gilbert (Home)" <gilbertd@treblig.org>
Date: Fri, 10 May 2002 16:56:03 +0100
David S. Miller wrote:
> How would you like the kernel to "ignore" a page fault that cannot be
> serviced?
Well imagining you really wanted to do it you could skip a store
instruction or put a dummy value in the register that something is being
loaded into.
What is a suitable dummy value? Zero? That would likely lead to a
segfault if the value being loaded is supposed to be some pointer.
There is no reasonable behavior other than to kill the process if it
has not specified it's own handler.
next prev parent reply other threads:[~2002-05-10 16:00 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-05-10 15:37 Mihai RUSU
2002-05-10 15:30 ` David S. Miller
2002-05-10 15:53 ` Maciej W. Rozycki
2002-05-10 15:47 ` David S. Miller
2002-05-10 17:03 ` Maciej W. Rozycki
2002-05-10 16:56 ` David S. Miller
2002-05-10 19:54 ` Maciej W. Rozycki
2002-05-10 15:56 ` Dave Gilbert (Home)
2002-05-10 15:48 ` David S. Miller [this message]
2002-05-10 16:04 ` Mihai RUSU
2002-05-11 13:27 ` Alex Riesen
2002-05-10 16:27 ` Alan Cox
2002-05-10 16:40 ` Mihai RUSU
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