Re: [patch for-linus] memcg, kmem: fix build error when CONFIG_INETis disabled

[David Rientjes]

On Wed, 10 Oct 2012, Fengguang Wu wrote:

> > Fengguang, was that this error? Why hasn't it showed up before in the
> > test system?
> 
> I do find this error in the build error log:
> 
>         (.text+0x867f): undefined reference to `sock_update_memcg'
>         2012-09-24 04:54:53 snb next:akpm:69921c3 x86_64-randconfig-s005 0a7f618
> 
> Unfortunately it was not reported because the build system could
> miss/ignore build bugs due to various reasons/imperfections. It has
> since then undergo lots of enhancements and as a result, the daily
> reported errors have more than doubled. :-)
> 

Not sure where this discussion is going.  Do people who can't build their 
kernel and have a fix for it need to verify that your build system shows 
the same thing first?  This isn't a false positive.

As I said in the first message, Randy reported this on September 24 (the 
same date you're reporting above) and received no response when he 
reported it to LKML here: 
http://marc.info/?l=linux-kernel&m=134852557320089

Regardless, Linus' tree is messed up and I don't think we need to go back 
reverting patches out of his tree when it's trivial to fix with my patch, 
which Michal acked.  Sheesh.
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