linux-kernel - Re: [PATCH] dmi: Prevent linked list corruption (resent)

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Message-ID: <82e4877d0802110935v11e4bdf8l783a9834ca0a950d@mail.gmail.com>
Date:	Mon, 11 Feb 2008 12:35:39 -0500
From:	"Parag Warudkar" <parag.warudkar@...il.com>
To:	"Jean Delvare" <khali@...ux-fr.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, "Ingo Molnar" <mingo@...e.hu>,
	"Thomas Gleixner" <tglx@...utronix.de>
Subject: Re: [PATCH] dmi: Prevent linked list corruption (resent)

On Feb 11, 2008 12:24 PM, Jean Delvare <khali@...ux-fr.org> wrote:
> [Once more without forgetting the last "quilt refresh", sorry.]
>
> Adding the same item to a given linked list more than once is guaranteed
> to break and corrupt the list. This is however what we do in dmi_scan
> since commit 79da4721117fcf188b4b007b775738a530f574da.
>
> Given that there is absolutely no interest in saving empty OEM
> strings anyway, I propose the simple and efficient fix below: we
> discard the empty OEM strings altogether.
>
> Signed-off-by: Jean Delvare <khali@...ux-fr.org>
> Cc: Parag Warudkar <parag.warudkar@...il.com>
> Cc: Ingo Molnar <mingo@...e.hu>
> Cc: Thomas Gleixner <tglx@...utronix.de>

I suppose the list would be corrupted only if there are deletions from
the list? (Which there aren't.)

Anyway not adding the empty strings is way better and I don't see now
how they could've been useful.
(I added them out of the doubt of breaking something.)

Acked-By: Parag Warudkar <parag.warudkar@...il.com>

Thanks

Parag
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