Messages in this thread | | | Date | Fri, 19 Nov 2010 20:01:56 +0100 | From | Lars-Peter Clausen <> | Subject | Re: [PATCH] power: gpio-charger: fix potential NULL dereference |
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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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