linux-kernel - Re: Linux Warning Report

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Date:   Wed, 26 Feb 2020 19:37:11 -0600
From:   Zzy Wysm <zzy@...wysm.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: Linux Warning Report - 5.6-rc3

> On Feb 25, 2020, at 9:55 PM, Randy Dunlap <rdunlap@...radead.org> wrote:
> 
> defconfig isn't very interesting IMO.  x86_64 allmodconfig has 1103 warnings
> when using your KCFLAGS string.
> (I am using gcc 7.5.0).  What version of gcc are you using?
> 

The gcc that comes with either Debian (gcc 8.3.0) or Ubuntu (gcc 9.2.1),
depending on what I use that day.

I agree that defconfig isn’t very interesting.  But it is the metric that
Linus used when he recently declared his warning mandate:

"we don't have any warnings in the default build”

If I do a x86_64 build with a very large config, I get 1139 warnings. The 
config I used is:

https://github.com/zzywysm/linux-kernel-compile-warnings/blob/master/almostallconfig-5.6rc3

And the warnings can be found at:

https://github.com/zzywysm/linux-kernel-compile-warnings/blob/master/warninglog-5.6rc3 

(Also, thank you Randy for fixing some of these warnings already!)

zzy