linux-kernel - Re: [build-check] scripts: add check

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20180703154914.5d3e8f28e1d87e48180073e3@linux-foundation.org>
Date:   Tue, 3 Jul 2018 15:49:14 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Norbert Manthey <nmanthey@...zon.de>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        David Woodhouse <dwmw@...zon.co.uk>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [build-check] scripts: add check_build script

On Tue, 3 Jul 2018 15:12:10 +0200 Norbert Manthey <nmanthey@...zon.de> wrote:

> This script performs build testing, by building several configurations
> several times. The script is introduced to improve the consistency of
> testing changes in the kernel configuration.
> 
> This version build randconfig 10 times, as well as allyesconfig,
> allnoconfig and allmodconfig. Depending on the used machine and system
> setup, the script might take a while to finish.
> 
> The script logs all the used config files, as well as the output of the
> build commands to a log directory "build_check_logs", so that this data
> can be retrieved after running the script.

I'm unable to even guess how many people will find this useful.

> +build ()
> +{
> +	local -r LOG_FILE="$1"
> +	local -i STATUS=0
> +
> +	make clean -j $(nproc) &> /dev/null
> +	make -j $(nproc) &>> "$LOG_FILE" || STATUS=$?
> +
> +	echo "build status: $STATUS" >> "$LOG_FILE"
> +	echo "[$SECONDS] build status: $STATUS"
> +	return "$STATUS"
> +}

The script never sets nproc.  So I guess this is a bare `make -j'. 
When I type that on my (quite beefy) workstation I get eleventy xillion
processes and the machine locks up.  Can't even wiggle the mouse. 
After a 20 minute nap (thanks!) it was still comatose so I hit the big
button (who writes this junk??).

So you might want to take an educated guess from /proc/cpuinfo here.