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authorHui Tang <tanghui20@huawei.com>2022-11-14 17:02:40 +0800
committerMiquel Raynal <miquel.raynal@bootlin.com>2022-11-17 21:59:03 +0100
commit6bdd45d795adf9e73b38ced5e7f750cd199499ff (patch)
treefa2d00ddba48c063b56939d852bd4ccc629f747a /drivers/mtd/lpddr
parent9b533a6e41df8315422575764a7f9a72bda2d995 (diff)
mtd: lpddr2_nvm: Fix possible null-ptr-deref
It will cause null-ptr-deref when resource_size(add_range) invoked, if platform_get_resource() returns NULL. Fixes: 96ba9dd65788 ("mtd: lpddr: add driver for LPDDR2-NVM PCM memories") Signed-off-by: Hui Tang <tanghui20@huawei.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20221114090240.244172-1-tanghui20@huawei.com
Diffstat (limited to 'drivers/mtd/lpddr')
-rw-r--r--drivers/mtd/lpddr/lpddr2_nvm.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mtd/lpddr/lpddr2_nvm.c b/drivers/mtd/lpddr/lpddr2_nvm.c
index 367e2d906de0..e71af4c49096 100644
--- a/drivers/mtd/lpddr/lpddr2_nvm.c
+++ b/drivers/mtd/lpddr/lpddr2_nvm.c
@@ -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) {