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SubjectRe: [PATCH] power: gpio-charger: fix potential NULL dereference
Vasiliy Kulikov wrote:
> kzalloc() result is not compared with NULL. It might lead to NULL
> pointer dereference in OOM situation.
>
> Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
> ---
> Compile tested only.
>
> drivers/power/gpio-charger.c | 4 ++++
> 1 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/power/gpio-charger.c b/drivers/power/gpio-charger.c
> index fccbe99..b07a71c 100644
> --- a/drivers/power/gpio-charger.c
> +++ b/drivers/power/gpio-charger.c
> @@ -87,6 +87,10 @@ static int __devinit gpio_charger_probe(struct platform_device *pdev)
> }
>
> gpio_charger = kzalloc(sizeof(*gpio_charger), GFP_KERNEL);
> + if (!gpio_charger) {
> + dev_err(&pdev->dev, "kzalloc failed\n");
> + return -ENOMEM;
> + }
>
> charger = &gpio_charger->charger;
>

Hi

I already send a similar patch yesterday.
See http://lkml.org/lkml/2010/11/18/632

- Lars


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