linux-kernel - static char *buf; (was Re: + v4l-fix-concurrent-read-from-proc-videocodecs.patch added to -mm tree)

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Message-ID: <20080413161812.GA21575@martell.zuzino.mipt.ru>
Date:	Sun, 13 Apr 2008 20:18:12 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org
Subject: static char *buf; (was Re: +
	v4l-fix-concurrent-read-from-proc-videocodecs.patch added to -mm
	tree)

> -static char *videocodec_buf = NULL;
> -static int videocodec_bufsize;

> -	kfree(videocodec_buf);
> -	videocodec_buf = kmalloc(size, GFP_KERNEL);

Speaking of this failure mode... cfi_staa_writev() does the same trick
allocating and freeing global pointer to data.
Is this a bug too?

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