[PATCH v4 07/14] hw/sd/sdcard: Check address is in range

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

As a defense, assert if the requested address is out of the card area.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/sd/sd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 871c30a67f..0b606e9054 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -539,6 +539,8 @@ static void sd_response_r7_make(SDState *sd, uint8_t *response)
 
 static inline uint64_t sd_addr_to_wpnum(uint64_t addr)
 {
+    assert(addr < sd->size);
+
     return addr >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT);
 }
 
-- 
2.21.3