linux-kernel - Re: [PATCH] checkpatch: relax regexp for COMMIT_LOG_LONG

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Date:   Fri, 5 Nov 2021 11:31:58 +0100
From:   Jerome Forissier <jerome@...issier.org>
To:     Andy Whitcroft <apw@...onical.com>, Joe Perches <joe@...ches.com>,
        Dwaipayan Ray <dwaipayanray1@...il.com>,
        Lukas Bulwahn <lukas.bulwahn@...il.com>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH] checkpatch: relax regexp for COMMIT_LOG_LONG_LINE

On 9/23/21 16:38, Jerome Forissier wrote:
> One exceptions to the COMMIT_LOG_LONG_LINE rule is a file path followed
> by :. That is typically some sort diagnostic message from a compiler or
> a build tool, in which case we don't want to wrap the lines but keep the
> message unmodified.
> The regular expression used to match this pattern currently doesn't
> accept absolute paths or + characters. This can result in false
> positives as in the following (out-of-tree) example:
> 
>   ...
>   /home/jerome/work/optee_repo_qemu/build/../toolchains/aarch32/bin/arm-linux-gnueabihf-ld.bfd: /home/jerome/work/toolchains-gcc10.2/aarch32/bin/../lib/gcc/arm-none-linux-gnueabihf/10.2.1/../../../../arm-none-linux-gnueabihf/lib/libstdc++.a(eh_alloc.o): in function `__cxa_allocate_exception':
>   /tmp/dgboter/bbs/build03--cen7x86_64/buildbot/cen7x86_64--arm-none-linux-gnueabihf/build/src/gcc/libstdc++-v3/libsupc++/eh_alloc.cc:284: undefined reference to `malloc'
>   ...
> 
> Update the regular expression to match the above paths.
> 
> Signed-off-by: Jerome Forissier <jerome@...issier.org>
> ---
>  scripts/checkpatch.pl | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index c27d2312cfc3..bf2094cb4271 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -3147,7 +3147,7 @@ sub process {
>  		    length($line) > 75 &&
>  		    !($line =~ /^\s*[a-zA-Z0-9_\/\.]+\s+\|\s+\d+/ ||
>  					# file delta changes
> -		      $line =~ /^\s*(?:[\w\.\-]+\/)++[\w\.\-]+:/ ||
> +		      $line =~ /^\s*(?:[\w\.\-\+]*\/)++[\w\.\-\+]+:/ ||
>  					# filename then :
>  		      $line =~ /^\s*(?:Fixes:|Link:|$signature_tags)/i ||
>  					# A Fixes: or Link: line or signature tag line
> 

Ping?

Thanks,
-- 
Jerome