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author | Hui Tang <tanghui20@huawei.com> | 2022-11-14 17:02:40 +0800 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-31 13:32:12 +0100 |
commit | c4cc41e94d8357f5f02b8ef40257bb23931d8438 (patch) | |
tree | d81c71a0c496435970228cc8afd093184ba59a64 /drivers/mtd | |
parent | fee1df5a5835e235ed33e0c5e05008f6e597f2f0 (diff) | |
download | linux-stable-c4cc41e94d8357f5f02b8ef40257bb23931d8438.tar.gz linux-stable-c4cc41e94d8357f5f02b8ef40257bb23931d8438.tar.bz2 linux-stable-c4cc41e94d8357f5f02b8ef40257bb23931d8438.zip |
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 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) { |