Re: linux-next: build warning after merge of the tip tree

From: Stephen Rothwell
Date: Thu Sep 02 2010 - 22:12:13 EST


On Fri, 3 Sep 2010 12:10:23 +1000 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> After merging the tip tree, today's linux-next build (x86_64 allmodconfig)
> produced this warning:
>
> arch/x86/mm/init_64.c: In function 'kernel_physical_mapping_init':
> arch/x86/mm/init_64.c:601: warning: 'addr' may be used uninitialized in this function
>
> The code does look suspicious ... 'addr' gets declared and then passed to
> a function, but is not set anywhere ...

Forgot to say:

Introduced by commit 9b861528a8012e7bc4d1f7bae07395b225331477 ("x86-64,
mem: Update all PGDs for direct mapping and vmemmap mapping changes").

--
Cheers,
Stephen Rothwell sfr@xxxxxxxxxxxxxxxx
http://www.canb.auug.org.au/~sfr/

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