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Bug#464962: immediate crash on boot on TM5800



maximilian attems wrote:
On Tue, Feb 12, 2008 at 01:14:04PM -0800, H. Peter Anvin wrote:
Are you sure that build matches the bug report?

urrgs right sorry, the posted vmlinux is a newer 2.6.24-git22 and not Version: 2.6.24-3
The EIP given falls inside the .data segment of that kernel, specifically inside the symbol init_task.

	-hpa

will rebuild aboves.

Okay, the faulting instruction is the following:

c0383360:       0f 1f 40 00             nopl   0x0(%eax)

The Crusoe code morphing software apparently doesn't recognize these "long noops", and (presumably) the rest of the hinting NOOP group. gcc didn't use to generate them, and Crusoe/Efficeon generally do not benefit from code alignment anyway. I suspect the best thing to do is to use either a 586 kernel or build a dedicated Crusoe kernel without code alignment.

	-hpa




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