Messages in this thread Patch in this message | | | From | Hui Tang <> | Subject | [PATCH v2] mtd: lpddr2_nvm: Fix possible null-ptr-deref | Date | Mon, 14 Nov 2022 17:02:40 +0800 |
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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> --- v1 -> v2: - replace IS_ERR(add_range) with !add_range - fix commit subject format --- drivers/mtd/lpddr/lpddr2_nvm.c | 2 ++ 1 file changed, 2 insertions(+)
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) { -- 2.17.1
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