Subject: [patch] PS3: Fix printing of os-area magic numbers

From: Geoff Levand <[email-masked]>
Date: Sat, 17 Nov 2007 14:24:40 -0800

Fix a bug in the printing of the PS3 os-area magic numbers which assumed that
magic numbers were zero terminated strings.  The magic numbers are represented
in memory as integers.  If the os-area sections are not initialized correctly
they could contained random data that would be printed to the display.

CC: Geert Uytterhoeven <[email-masked]>
Signed-off-by: Geoff Levand <[email-masked]>
---

Paul,

This fixes a very minor bug in linus' current tree.  Please consider
for 2.6.24.

-Geoff

 arch/powerpc/platforms/ps3/os-area.c |   14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

--- a/arch/powerpc/platforms/ps3/os-area.c
+++ b/arch/powerpc/platforms/ps3/os-area.c
@@ -269,8 +269,13 @@ static void __init os_area_get_property(
 static void _dump_header(const struct os_area_header *h, const char *func,
 	int line)
 {
+	u8 str[sizeof(h->magic_num) + 1];
+
+	memcpy(str, h->magic_num, sizeof(h->magic_num));
+	str[sizeof(h->magic_num)] = 0;
+
 	pr_debug("%s:%d: h.magic_num:       '%s'\n", func, line,
-		h->magic_num);
+		str);
 	pr_debug("%s:%d: h.hdr_version:     %u\n", func, line,
 		h->hdr_version);
 	pr_debug("%s:%d: h.db_area_offset:  %u\n", func, line,
@@ -484,8 +489,13 @@ static int db_get_rtc_diff(const struct 
 static void _dump_db(const struct os_area_db *db, const char *func,
 	int line)
 {
+	u8 str[sizeof(db->magic_num) + 1];
+
+	memcpy(str, &db->magic_num, sizeof(db->magic_num));
+	str[sizeof(db->magic_num)] = 0;
+
 	pr_debug("%s:%d: db.magic_num:      '%s'\n", func, line,
-		(const char*)&db->magic_num);
+		str);
 	pr_debug("%s:%d: db.version:         %u\n", func, line,
 		db->version);
 	pr_debug("%s:%d: db.index_64:        %u\n", func, line,