Re: [PATCH - RFC] [1/2] 2.6 must-fix list - kernel error reporting

From: Andi Kleen (
Date: Tue Jul 08 2003 - 14:14:04 EST

Andrew Morton <> writes:

> The layout of `struct kern_log_entry' may be problematic. Think of the
> situation where a 64-bit kernel constructs one of these and sends it up to
> 32-bit userspace. Will the structure layout be the same under the 32-bit
> compiler as under the 64-bit one?

No it won't. Best is to order the fields by size (arrays ordered by their
subtype). This should always give compatible alignment.

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