diff --git a/src/utils/wpa_debug.c b/src/utils/wpa_debug.c
index 38ea8aa38..7846c1e5f 100644
--- a/src/utils/wpa_debug.c
+++ b/src/utils/wpa_debug.c
@@ -375,19 +375,19 @@ static void _wpa_hexdump(int level, const char *title, const u8 *buf,
 #endif /* CONFIG_ANDROID_LOG */
 }
 
-void wpa_hexdump(int level, const char *title, const u8 *buf, size_t len)
+void wpa_hexdump(int level, const char *title, const void *buf, size_t len)
 {
 	_wpa_hexdump(level, title, buf, len, 1);
 }
 
 
-void wpa_hexdump_key(int level, const char *title, const u8 *buf, size_t len)
+void wpa_hexdump_key(int level, const char *title, const void *buf, size_t len)
 {
 	_wpa_hexdump(level, title, buf, len, wpa_debug_show_keys);
 }
 
 
-static void _wpa_hexdump_ascii(int level, const char *title, const u8 *buf,
+static void _wpa_hexdump_ascii(int level, const char *title, const void *buf,
 			       size_t len, int show)
 {
 	size_t i, llen;
@@ -407,7 +407,7 @@ static void _wpa_hexdump_ascii(int level, const char *title, const u8 *buf,
 			/* can do ascii processing in userspace */
 			for (i = 0; i < len; i++)
 				fprintf(wpa_debug_tracing_file,
-					" %02x", buf[i]);
+					" %02x", pos[i]);
 		}
 		fflush(wpa_debug_tracing_file);
 	}
@@ -495,13 +495,14 @@ static void _wpa_hexdump_ascii(int level, const char *title, const u8 *buf,
 }
 
 
-void wpa_hexdump_ascii(int level, const char *title, const u8 *buf, size_t len)
+void wpa_hexdump_ascii(int level, const char *title, const void *buf,
+		       size_t len)
 {
 	_wpa_hexdump_ascii(level, title, buf, len, 1);
 }
 
 
-void wpa_hexdump_ascii_key(int level, const char *title, const u8 *buf,
+void wpa_hexdump_ascii_key(int level, const char *title, const void *buf,
 			   size_t len)
 {
 	_wpa_hexdump_ascii(level, title, buf, len, wpa_debug_show_keys);
diff --git a/src/utils/wpa_debug.h b/src/utils/wpa_debug.h
index 2ed1bd8ec..0013cf20a 100644
--- a/src/utils/wpa_debug.h
+++ b/src/utils/wpa_debug.h
@@ -77,7 +77,7 @@ PRINTF_FORMAT(2, 3);
  * output may be directed to stdout, stderr, and/or syslog based on
  * configuration. The contents of buf is printed out has hex dump.
  */
-void wpa_hexdump(int level, const char *title, const u8 *buf, size_t len);
+void wpa_hexdump(int level, const char *title, const void *buf, size_t len);
 
 static inline void wpa_hexdump_buf(int level, const char *title,
 				   const struct wpabuf *buf)
@@ -99,7 +99,7 @@ static inline void wpa_hexdump_buf(int level, const char *title,
  * like wpa_hexdump(), but by default, does not include secret keys (passwords,
  * etc.) in debug output.
  */
-void wpa_hexdump_key(int level, const char *title, const u8 *buf, size_t len);
+void wpa_hexdump_key(int level, const char *title, const void *buf, size_t len);
 
 static inline void wpa_hexdump_buf_key(int level, const char *title,
 				       const struct wpabuf *buf)
@@ -121,7 +121,7 @@ static inline void wpa_hexdump_buf_key(int level, const char *title,
  * the hex numbers and ASCII characters (for printable range) are shown. 16
  * bytes per line will be shown.
  */
-void wpa_hexdump_ascii(int level, const char *title, const u8 *buf,
+void wpa_hexdump_ascii(int level, const char *title, const void *buf,
 		       size_t len);
 
 /**
@@ -138,7 +138,7 @@ void wpa_hexdump_ascii(int level, const char *title, const u8 *buf,
  * bytes per line will be shown. This works like wpa_hexdump_ascii(), but by
  * default, does not include secret keys (passwords, etc.) in debug output.
  */
-void wpa_hexdump_ascii_key(int level, const char *title, const u8 *buf,
+void wpa_hexdump_ascii_key(int level, const char *title, const void *buf,
 			   size_t len);
 
 /*