From: Corey Minyard <cminy...@mvista.com>
Avoid an overflow.
Signed-off-by: Corey Minyard <cminy...@mvista.com>
Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
---
hw/i2c/smbus_slave.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/hw/i2c/smbus_slave.c b/hw/i2c/smbus_slave.c
index 70ff29c095..d03f714608 100644
--- a/hw/i2c/smbus_slave.c
+++ b/hw/i2c/smbus_slave.c
@@ -182,7 +182,11 @@ static int smbus_i2c_send(I2CSlave *s, uint8_t data)
switch (dev->mode) {
case SMBUS_WRITE_DATA:
DPRINTF("Write data %02x\n", data);
- dev->data_buf[dev->data_len++] = data;
+ if (dev->data_len >= sizeof(dev->data_buf)) {
+ BADF("Too many bytes sent\n");
+ } else {
+ dev->data_buf[dev->data_len++] = data;
+ }
break;
default:
--
2.17.1
