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SubjectRe: [PATCH] arm: mach-omap2: potential NULL dereference


Am 17.01.2011 11:08, schrieb Vasiliy Kulikov:
> kzalloc() may fail, if so return -ENOMEM.
>
> Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
> ---
> Cannot compile this driver, so it is not tested at all.
>
> arch/arm/mach-omap2/smartreflex.c | 3 +++
> 1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c
> index 77ecebf..871bca9 100644
> --- a/arch/arm/mach-omap2/smartreflex.c
> +++ b/arch/arm/mach-omap2/smartreflex.c
> @@ -260,7 +260,10 @@ static int sr_late_init(struct omap_sr *sr_info)
> if (sr_class->class_type == SR_CLASS2 &&
> sr_class->notify_flags && sr_info->irq) {
>
> + ret = -ENOMEM;
> name = kzalloc(SMARTREFLEX_NAME_LEN + 1, GFP_KERNEL);
> + if (name == NULL)
> + goto error;
> strcpy(name, "sr_");
> strcat(name, sr_info->voltdm->name);
> ret = request_irq(sr_info->irq, sr_interrupt,

maybe it is more readable to use:
kasprint(&name,"sr_%s",sr_info->voltdm->name);

re,
wh


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