Re: ip_rcv_finish() NULL pointer and possibly related Oopses

[Shaun Crampton]

>And the kernel thinks it's
>outside of any normal text section, so it does not try to dump any
>code from before the instruction pointer.
>
>   0:	48 8b 88 40 03 00 00 	mov    0x340(%rax),%rcx
>   7:	e8 1d dd dd ff       	callq  0xffffffffffdddd29
>   c:	5d                   	pop    %rbp
>   d:	c3                   	retq
>
>Did you write your own module loader or something?

We certainly didn't but CoreOS may have.  I've asked CoreOS if they know
what's going on.

Are there any extra diagnostics I can gather from a CoreOS system to help
figure out what's going on there?  Is there anything I can do to get more
useful diagnostics when one of these failures occur?  As noted, I can
reproduce the issue but it's expensive, requiring hundreds of VMs to
hammer away for an hour or so.

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