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Date: Wed, 19 Aug 2020 10:05:01 +0800 From: Zhen Lei <thunder.leizhen@...wei.com> To: Oliver O'Halloran <oohall@...il.com>, Dan Williams <dan.j.williams@...el.com>, Vishal Verma <vishal.l.verma@...el.com>, "Dave Jiang" <dave.jiang@...el.com>, Ira Weiny <ira.weiny@...el.com>, Markus Elfring <Markus.Elfring@....de>, linux-nvdimm <linux-nvdimm@...ts.01.org>, linux-kernel <linux-kernel@...r.kernel.org> CC: Zhen Lei <thunder.leizhen@...wei.com> Subject: [PATCH v2 2/4] libnvdimm: add sanity check for provider_name in of_pmem_region_probe() kstrdup() may return NULL because of no memory, check it. Fixes: 49bddc73d15c ("libnvdimm/of_pmem: Provide a unique name for bus provider") Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com> --- drivers/nvdimm/of_pmem.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/nvdimm/of_pmem.c b/drivers/nvdimm/of_pmem.c index 1292ffca7b2ecc0..13c4c274ca6ea88 100644 --- a/drivers/nvdimm/of_pmem.c +++ b/drivers/nvdimm/of_pmem.c @@ -31,6 +31,11 @@ static int of_pmem_region_probe(struct platform_device *pdev) return -ENOMEM; priv->bus_desc.provider_name = kstrdup(pdev->name, GFP_KERNEL); + if (!priv->bus_desc.provider_name) { + kfree(priv); + return -ENOMEM; + } + priv->bus_desc.module = THIS_MODULE; priv->bus_desc.of_node = np; -- 1.8.3
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