On Wed, Jan 23, 2019 at 05:44:16PM +0300, Heikki Krogerus wrote:
> With string type property entries we need to use
> sizeof(const char *) instead of the number of characters as
> the length of the entry.
>
> If the string was shorter then sizeof(const char *),
> attempts to read it would have failed with -EOVERFLOW. The
> problem has been hidden because all build-in string
> properties have had a string longer then 8 characters until
> now.
>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> Fixes: a85f42047533 ("device property: helper macros for property entry creation")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
> ---
> include/linux/property.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/include/linux/property.h b/include/linux/property.h
> index 3789ec755fb6..65d3420dd5d1 100644
> --- a/include/linux/property.h
> +++ b/include/linux/property.h
> @@ -258,7 +258,7 @@ struct property_entry {
> #define PROPERTY_ENTRY_STRING(_name_, _val_) \
> (struct property_entry) { \
> .name = _name_, \
> - .length = sizeof(_val_), \
> + .length = sizeof(const char *), \
> .type = DEV_PROP_STRING, \
> { .value = { .str = _val_ } }, \
> }
> --
> 2.20.1
>
--
With Best Regards,
Andy Shevchenko
