Re: pipe/page fault oddness.

[Sasha Levin]

On 10/01/2014 06:28 PM, Chuck Ebbert wrote:
> On Wed, 01 Oct 2014 18:08:30 -0400
> Sasha Levin <sasha.levin@xxxxxxxxxx> wrote:
> 
>> > On 10/01/2014 04:20 PM, Linus Torvalds wrote:
>>> > > So I'm really sending this patch out in the hope that it will get
>>> > > comments, fixup and possibly even testing by people who actually know
>>> > > the NUMA balancing code. Rik?  Anybody?
>> > 
>> > Hi Linus,
>> > 
>> > I've tried this patch on the same configuration that was triggering
>> > the VM_BUG_ON that Hugh mentioned previously. Surprisingly enough it
>> > ran fine for ~20 minutes before exploding with:
>> > 
>> > [ 2781.566206] kernel BUG at mm/huge_memory.c:1293!
> That's:
> 	BUG_ON(is_huge_zero_page(page));
> 
> Can you change your scripts to show the source code line when
> the error is a BUG_ON()? The machine code disassembly after the
> oops message doesn't really help.
> 

Hum? The source code line is the first line in the trace:

	[ 2781.566206] kernel BUG at mm/huge_memory.c:1293!


Thanks,
Sasha
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