diff options
| author | Hui Tang <tanghui20@huawei.com> | 2022-11-14 17:02:40 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-18 11:41:03 +0100 |
| commit | 8eb64dc5a790a529ef49ec94b3337af09dac15d3 (patch) | |
| tree | 492ab1befdcf12e623398e3d9cb77640bf6e88e0 /drivers/mtd | |
| parent | 8e51f5894df2018bf194e58a1789f3cb493698a6 (diff) | |
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: 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
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/lpddr/lpddr2_nvm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mtd/lpddr/lpddr2_nvm.c b/drivers/mtd/lpddr/lpddr2_nvm.c index 72f5c7b30079..add4386f99f0 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) { |