Messages in this thread | | | Subject | Re: [PATCH] mtd: lpddr2_nvm: i2c: mux: reg: Fix possible null-ptr-deref | From | Hui Tang <> | Date | Mon, 14 Nov 2022 16:30:48 +0800 |
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On 2022/11/14 16:04, Miquel Raynal wrote: > Hi Hui, > > tanghui20@huawei.com wrote on Mon, 14 Nov 2022 10:01:41 +0800: > >> 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> >> --- >> 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..cf8e86eb4b2c 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 (IS_ERR(add_range)) > > platform_get_resource() just returns NULL upon error.
Thanks
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