[PATCH 3/4] base: soc: Check for NULL SoC device attributes

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[PATCH 3/4] base: soc: Check for NULL SoC device attributes · gregkh@linuxfoundation.org (Greg Kroah-Hartman) · 2016-10-19

STALE3531d REVIEWED: 18 (18M)

Revisions (3)

2016-10-04 v1 [diff vs current]
2016-10-19 v1 current
2016-10-31 v2 [diff vs current]

From: gregkh@linuxfoundation.org (Greg Kroah-Hartman)
Date: 2016-10-19 08:26:49

On Tue, Oct 04, 2016 at 11:09:26AM +0200, Geert Uytterhoeven wrote:

If soc_device_match() is used to check the value of a specific
attribute that is not present for the current SoC, the kernel crashes
with a NULL pointer dereference.

Fix this by explicitly checking for the absence of a needed property,
and considering this a non-match.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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