lkml.org 
[lkml]   [2019]   [Mar]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5.0 114/238] device property: Fix the length used in PROPERTY_ENTRY_STRING()
Date
5.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Heikki Krogerus <heikki.krogerus@linux.intel.com>

commit 2b6e492467c78183bb629bb0a100ea3509b615a5 upstream.

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: 4.5+ <stable@vger.kernel.org> # 4.5+
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
include/linux/property.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- 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_ } }, \
}

\
 
 \ /
  Last update: 2019-03-22 13:32    [W:0.554 / U:3.540 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site