>From 6bd60b922b1f1e43fd534a11194553f27c036a1e Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Wed, 23 Jan 2019 17:16:47 +0300 Subject: [PATCH] device property: Fix the length used in PROPERTY_ENTRY_STRING 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. Fixes: a85f42047533 ("device property: helper macros for property entry creation") Cc: stable@vger.kernel.org # 4.9.x Signed-off-by: Heikki Krogerus --- 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 459337fb44d0..d5c7ebda4113 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -233,7 +233,7 @@ struct property_entry { #define PROPERTY_ENTRY_STRING(_name_, _val_) \ (struct property_entry) { \ .name = _name_, \ - .length = sizeof(_val_), \ + .length = sizeof(const char *), \ .is_string = true, \ { .value = { .str = _val_ } }, \ } -- 2.20.1