From: Richard Hirst <rhirst@linuxcare.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] Kernel dumps stacks while calling exported function from a loadable module
Date: Tue, 20 Aug 2002 11:22:30 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590701905959@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590701905956@msgid-missing>
On Tue, Aug 20, 2002 at 07:41:47PM +0800, Jeff Lee wrote:
> My kernel was from the RH installation CD. I haven't touched it yet.
>
> I used gcc3.1 for a reason: the 2.96 gcc causes the same problem; hence I tried gcc3.1 but that doesn't seem to matter,
>
> Actually, I tried a little experiment. I printed the address of dummy() out; surprisingly, the reading of dummy() is different in the exporting module from the calling module (no wonder the kernel stacks). But, any other global variables look fine.
>
> What so special about the kernel function symbols in IA 64?
A pointer to a function on ia64 is actually a pointer to a struct
containing the address of the function and the data pointer to use in
the function.
Richard
next prev parent reply other threads:[~2002-08-20 11:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-20 9:52 [Linux-ia64] Kernel dumps stacks while calling exported function from a loadable module Jeff Lee
2002-08-20 11:11 ` Matthew Wilcox
2002-08-20 11:22 ` Richard Hirst [this message]
2002-08-20 11:41 ` Jeff Lee
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