linux-kernel - Re: [Cocci] [PATCH v2] coccinelle: api: check for propagation of error from platform_get

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Message-ID: <567F9A29.50202@users.sourceforge.net>
Date:	Sun, 27 Dec 2015 08:58:33 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Julia Lawall <julia.lawall@...6.fr>
Cc:	Coccinelle <cocci@...teme.lip6.fr>,
	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org, linux-media@...r.kernel.org,
	netdev@...r.kernel.org, linux-i2c@...r.kernel.org,
	linux-spi@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	Gilles Muller <Gilles.Muller@...6.fr>,
	Michal Marek <mmarek@...e.com>,
	Nicolas Palix <nicolas.palix@...g.fr>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Subject: Re: [Cocci] [PATCH v2] coccinelle: api: check for propagation of
 error from platform_get_irq

> The error return value of platform_get_irq seems to often get dropped.

How do you think about any more fine-tuning here?

Commit message:
* … of the platform_get_irq() function seems to get dropped too often.

* Why do you concentrate on a single function name?
  Do you plan to extend this source code analysis approach?


> +@...ipt:python r_report depends on report@
> +j0 << r.j0;
> +j1 << r.j1;
> +@@
> +
> +msg = "Propagate return value of platform_get_irq around line %s." % (j1[0].line)

Are there more unchecked return values which are interesting
for further considerations?
https://cwe.mitre.org/data/definitions/252.html

Regards,
Markus
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