linux-kernel - [RFC] NULL pointer checking?

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Message-ID: <CAGG-pUTDbZzWv9qyQdZ4JELZT59=BL4EA64rPCrUA+8jNX=WzQ@mail.gmail.com>
Date:	Thu, 26 Sep 2013 09:34:22 -0300
From:	Geyslan Gregório Bem <geyslan@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: [RFC] NULL pointer checking?

I would like to know when to do the NULL pointer checking.

Calling functions from different modules?
Calling functions in the same module?
Check again, after calling an outside function that already verifies
the pointer?
Always?

Best Regards,

Geyslan Gregório Bem
hackingbits.com
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