3.16.75-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Yingjoe Chen <yingjoe.chen@xxxxxxxxxxxx>
commit a0692f0eef91354b62c2b4c94954536536be5425 upstream.
If I2C_M_RECV_LEN check failed, msgs[i].buf allocated by memdup_user
will not be freed. Pump index up so it will be freed.
Fixes: 838bfa6049fb ("i2c-dev: Add support for I2C_M_RECV_LEN")
Signed-off-by: Yingjoe Chen <yingjoe.chen@xxxxxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
drivers/i2c/i2c-dev.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -300,6 +300,7 @@ static noinline int i2cdev_ioctl_rdrw(st
rdwr_pa[i].buf[0] < 1 ||
rdwr_pa[i].len < rdwr_pa[i].buf[0] +
I2C_SMBUS_BLOCK_MAX) {
+ i++;
res = -EINVAL;
break;
}
