On Fri, Aug 3, 2018 at 6:43 PM, Matthew Wilcox [off-list ref] wrote:

On Fri, Aug 03, 2018 at 05:09:45PM +0200, Greg Kroah-Hartman wrote:

quoted

On Fri, Aug 03, 2018 at 04:59:18PM +0200, Andrey Konovalov wrote:

quoted

Started looking at this. When I run sparse with default checks enabled
(make C=1) I get countless warnings. Does anybody actually use it?

Try using a more up-to-date version of sparse.  Odds are you are using
an old one, there is a newer version in a different branch on kernel.org
somewhere...

That's not true.  Building the current version of sparse from
git://git.kernel.org/pub/scm/devel/sparse/sparse.git leaves me with a
thousand errors just building the mm/ directory.  A sample:

I'm running the one from https://github.com/lucvoo/sparse-dev which
seems to be even more up to date. Defconfig on x86 gives me ~3000
warnings:

https://gist.github.com/xairy/8adace989f64462e18ffb5cb7d096b73
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