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i2c: dev: fix potential memory leak in i2cdev_ioctl_rdwr
[ Upstream commita0692f0eef
] 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:838bfa6049
("i2c-dev: Add support for I2C_M_RECV_LEN") Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -283,6 +283,7 @@ static noinline int i2cdev_ioctl_rdwr(struct i2c_client *client,
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msgs[i].len < 1 || msgs[i].buf[0] < 1 ||
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msgs[i].len < msgs[i].buf[0] +
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I2C_SMBUS_BLOCK_MAX) {
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i++;
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res = -EINVAL;
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break;
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}
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