linux-kernel - Re: [PATCH v3] coccinelle: misc: add array_size_dup script to detect missed overflow checks

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>] [day] [month] [year] [list]

Message-ID: <cf6ab028-4297-dfab-35a7-cb6589fe61ac@web.de>
Date:   Fri, 19 Jun 2020 17:03:18 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     Denis Efremov <efremov@...ux.com>,
        Coccinelle <cocci@...teme.lip6.fr>,
        Gilles Muller <Gilles.Muller@...6.fr>,
        Julia Lawall <julia.lawall@...6.fr>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nicolas Palix <nicolas.palix@...g.fr>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>,
        Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH v3] coccinelle: misc: add array_size_dup script to detect
 missed overflow checks

> Changes in v2:
…
> - assignment operator used

I would prefer the distinction for the application of corresponding metavariables.


> Changes in v3:
…
>  - \(&E1\|&E2\) changed to &\(E1\|E2\)

Would it be more helpful to mention the movement of the ampersand
before SmPL disjunctions?


…
> +virtual context
> +virtual report
> +virtual org

Can the following SmPL code variant become more attractive?

+virtual context, report, org


…
> +expression subE1 <= as.E1;
> +expression subE2 <= as.E2;
> +expression as.E1, as.E2, E3;

How do you think about the following SmPL code variant?

+expression subE1 <= as.E1,
+           subE2 <= as.E2,
+           as.E1,
+           as.E2,
+           E3;


…
> +coccilib.report.print_report(p2[0],
> +f"WARNING: same struct_size (line {p1[0].line})")

Please align such function parameters.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/coding-style.rst?id=5e857ce6eae7ca21b2055cca4885545e29228fe2#n93

+coccilib.report.print_report(p2[0],
+                             f"WARNING: same struct_size (line {p1[0].line})")


Regards,
Markus