Re: do_gettimeofday() system crash

[Christoph Hellwig <hch@ns.caldera.de>]

On Tue, Jul 17, 2001 at 03:43:26PM +0100, Oliver Ryan wrote:
> Hi,
> 
> I insmod a kernel module which calls do_gettimeofday in the following way:
> 
> struct timeval *timecount;
> 
> do_gettimeofday(timecount);
> 
> This causes a segmentation fault with the following error repeated on the screen: 
> VFS: Disk change detected on device ide1(22,0).
> 
> Does anyone know what happened?

You write to some random kernel memory as timecount is a pointer initialized with
some random value on the stack..

try:

	struct timeval timecount;

	do_gettimeofday(&timecount);

instead..

	Christoph

-- 
Of course it doesn't work. We've performed a software upgrade.
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