linux-kernel - Re: [PATCH] kbuild: deb-pkg: Remove blank first line from maint scripts

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Message-ID: <20241004171422.GA3142084@thelio-3990X>
Date: Fri, 4 Oct 2024 10:14:22 -0700
From: Nathan Chancellor <nathan@...nel.org>
To: Aaron Thompson <dev@...ont.org>
Cc: Masahiro Yamada <masahiroy@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kbuild: deb-pkg: Remove blank first line from maint
 scripts

On Fri, Oct 04, 2024 at 07:52:45AM +0000, Aaron Thompson wrote:
> From: Aaron Thompson <dev@...ont.org>
> 
> The blank line causes execve() to fail:
> 
>   # strace ./postinst
>   execve("./postinst", ...) = -1 ENOEXEC (Exec format error)
>   strace: exec: Exec format error
>   +++ exited with 1 +++
> 
> However running the scripts via shell does work (at least with bash)
> because the shell attempts to execute the file as a shell script when
> execve() fails.
> 
> Fixes: b611daae5efc ("kbuild: deb-pkg: split image and debug objects staging out into functions")
> Signed-off-by: Aaron Thompson <dev@...ont.org>

Reviewed-by: Nathan Chancellor <nathan@...nel.org>

> ---
>  scripts/package/builddeb | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/scripts/package/builddeb b/scripts/package/builddeb
> index c1757db6aa8a..404587fc71fe 100755
> --- a/scripts/package/builddeb
> +++ b/scripts/package/builddeb
> @@ -74,7 +74,6 @@ install_linux_image () {
>  
>  		mkdir -p "${pdir}/DEBIAN"
>  		cat <<-EOF > "${pdir}/DEBIAN/${script}"
> -
>  		#!/bin/sh
>  
>  		set -e
> 
> base-commit: 9852d85ec9d492ebef56dc5f229416c925758edc
> -- 
> 2.39.5
>