Re: [PATCH v4 3/4] drivers/base/node.c: use bin_attribute to avoid buff overflow

[Greg KH]

On Thu, Jun 17, 2021 at 10:19:09PM +1200, Barry Song wrote:
> From: Tian Tao <tiantao6@xxxxxxxxxxxxx>
> 
> Reading sys/devices/system/cpu/cpuX/nodeX/ returns cpumap and cpulist.
> However, the size of this file is limited to PAGE_SIZE because of the
> limitation for sysfs attribute. so we use bin_attribute instead of
> attribute to avoid NR_CPUS too big to cause buff overflow.
> 
> Signed-off-by: Tian Tao <tiantao6@xxxxxxxxxxxxx>
> Reviewed-by: Jonathan Cameron <jonathan.cameron@xxxxxxxxxx>
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Cc: "Rafael J. Wysocki" <rafael@xxxxxxxxxx>
> ---
>  drivers/base/node.c | 52 +++++++++++++++++++++++++++++----------------
>  1 file changed, 34 insertions(+), 18 deletions(-)

You are forwarding on a patch from someone else, you HAVE to also sign
off on it as well.

thanks,

greg k-h