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Commit 8eb64dc5 authored by Hui Tang's avatar Hui Tang Committed by Greg Kroah-Hartman
Browse files

mtd: lpddr2_nvm: Fix possible null-ptr-deref 



[ Upstream commit 6bdd45d795adf9e73b38ced5e7f750cd199499ff ]

It will cause null-ptr-deref when resource_size(add_range) invoked,
if platform_get_resource() returns NULL.

Fixes: 96ba9dd6 ("mtd: lpddr: add driver for LPDDR2-NVM PCM memories")
Signed-off-by: default avatarHui Tang <tanghui20@huawei.com>
Acked-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221114090240.244172-1-tanghui20@huawei.com


Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 8e51f589

drivers/mtd/lpddr/lpddr2_nvm.c

+2 −0
Original line number Diff line number Diff line
@@ -433,6 +433,8 @@ static int lpddr2_nvm_probe(struct platform_device *pdev) 


	/* lpddr2_nvm address range */

	add_range = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!add_range)

		return -ENODEV;



	/* Populate map_info data structure */

	*map = (struct map_info) {