Messages in this thread Patch in this message | | | From | Yang Yingliang <> | Subject | [PATCH] bus: fsl-mc: check return value after calling platform_get_resource() | Date | Sat, 18 Sep 2021 15:34:37 +0800 |
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It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/bus/fsl-mc/fsl-mc-bus.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c index 8fd4a356a86e..a7d6eac52fde 100644 --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -1168,6 +1168,8 @@ static int fsl_mc_bus_probe(struct platform_device *pdev) * Get physical address of MC portal for the root DPRC: */ plat_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!plat_res) + return -EINVAL; mc_portal_phys_addr = plat_res->start; mc_portal_size = resource_size(plat_res); mc_portal_base_phys_addr = mc_portal_phys_addr & ~0x3ffffff; -- 2.25.1
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