| Message ID | 1447273657-1668-2-git-send-email-clabbe.montjoie@gmail.com |
|---|---|
| State | New |
| Headers | show |
On Wed, Nov 11, 2015 at 9:27 PM, LABBE Corentin <clabbe.montjoie@gmail.com> wrote: > of_match_device could return NULL, and so cause a NULL pointer > dereference later at line 199: > priv->flags = of_id->data; > > Reported-by: coverity (CID 1324140) > Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com> Took out the previously applied version and applied this instead. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/gpio/gpio-syscon.c b/drivers/gpio/gpio-syscon.c index 045a952..7b25fdf 100644 --- a/drivers/gpio/gpio-syscon.c +++ b/drivers/gpio/gpio-syscon.c @@ -187,11 +187,15 @@ MODULE_DEVICE_TABLE(of, syscon_gpio_ids); static int syscon_gpio_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - const struct of_device_id *of_id = of_match_device(syscon_gpio_ids, dev); + const struct of_device_id *of_id; struct syscon_gpio_priv *priv; struct device_node *np = dev->of_node; int ret; + of_id = of_match_device(syscon_gpio_ids, dev); + if (!of_id) + return -ENODEV; + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM;
of_match_device could return NULL, and so cause a NULL pointer dereference later at line 199: priv->flags = of_id->data; Reported-by: coverity (CID 1324140) Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com> --- drivers/gpio/gpio-syscon.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)