Messages in this thread Patch in this message | | | From | Arvind Yadav <> | Subject | [v1] misc: cb710: core:- Handle return NULL error from pcim_iomap_table | Date | Thu, 22 Dec 2016 17:28:30 +0530 |
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Here, If pcim_iomap_table will fail. It will return NULL. Kernel can run into a NULL-pointer dereference. This error check will avoid NULL pointer dereference.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> --- drivers/misc/cb710/core.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/misc/cb710/core.c b/drivers/misc/cb710/core.c index fb397e7..7b60019 100644 --- a/drivers/misc/cb710/core.c +++ b/drivers/misc/cb710/core.c @@ -248,6 +248,8 @@ static int cb710_probe(struct pci_dev *pdev, spin_lock_init(&chip->irq_lock); chip->pdev = pdev; chip->iobase = pcim_iomap_table(pdev)[0]; + if (!chip->iobase) + return -ENOMEM; pci_set_drvdata(pdev, chip); -- 1.7.9.5
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