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  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Mon, 11 Oct 2021 11:05:04 +0900
From:   Akira Yokosawa <>
To:     Jonathan Corbet <>
Subject: [PATCH] docs: pdfdocs: Adjust \headheight for fancyhdr

Fancyhdr prior to v4.0 outputs a message per document as follows:

    Package Fancyhdr Warning: \headheight is too small (12.0pt):
    Make it at least 13.59999pt.
    We now make it that large for the rest of the document.
    This may cause the page layout to be inconsistent, however.

Fancyhdr v4.0 complains (once a page!) as follows:

    Package fancyhdr Warning: \headheight is too small (12.0pt):
    (fancyhdr)    Make it at least 13.59999pt, for example:
    (fancyhdr)    \setlength{\headheight}{13.59999pt}.
    (fancyhdr)    You might also make \topmargin smaller to compensate:

    (fancyhdr)    \addtolength{\topmargin}{-1.59999pt}.

Related item in fancyhdr v4.0 announcement on 2021-01-04 [1]:

    Backward incompatible changes:
      - Eliminate adjustments of \headheight or \footskip, when the
        header or footer is too high.


Silence the warnings by adding a couple of \addtolength commands in
the preamble.

Signed-off-by: Akira Yokosawa <>

This update doesn't have much visual effects in the final PDFs
(adjustment of only 1.6pt), but getting rid of harmless warnings
would help spot potential important ones.

Tested against Sphinx versions 2.4.4 and 4.2.0, with Tex Live
versions 2017/debian (Ubuntu 18.04), 2019/debian (Ubuntu 20.04),
and vanilla 2021 (as of 2021-10-08).

        Thanks, Akira
 Documentation/ | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/ b/Documentation/
index 948a97d6387d..17f7cee56987 100644
--- a/Documentation/
+++ b/Documentation/
@@ -353,6 +353,9 @@ latex_elements = {
         \\setsansfont{DejaVu Sans}
         \\setromanfont{DejaVu Serif}
         \\setmonofont{DejaVu Sans Mono}
+        % Adjust \\headheight for fancyhdr
+        \\addtolength{\\headheight}{1.6pt}
+        \\addtolength{\\topmargin}{-1.6pt}

base-commit: 7275423c177e5dcf53e350ab9db38f99946b8ec5

Powered by blists - more mailing lists