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From:   Sasha Levin <sashal@kernel.org>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc:     Zhang Qilong <zhangqilong3@huawei.com>,
        Martijn Coenen <maco@android.com>,
        Christian Brauner <christian.brauner@ubuntu.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Sasha Levin <sashal@kernel.org>, devel@driverdev.osuosl.org
Subject: [PATCH AUTOSEL 5.4 028/130] binder: change error code from postive to negative in binder_transaction
Date:   Tue, 22 Dec 2020 21:16:31 -0500
Message-Id: <20201223021813.2791612-28-sashal@kernel.org>
In-Reply-To: <20201223021813.2791612-1-sashal@kernel.org>
References: <20201223021813.2791612-1-sashal@kernel.org>
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From: Zhang Qilong <zhangqilong3@huawei.com>

[ Upstream commit 88f6c77927e4aee04e0193fd94e13a55753a72b0 ]

Depending on the context, the error return value
here (extra_buffers_size < added_size) should be
negative.

Acked-by: Martijn Coenen <maco@android.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201026110314.135481-1-zhangqilong3@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/android/binder.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index b62b1ab6bb699..6091a3e20506d 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -3107,7 +3107,7 @@ static void binder_transaction(struct binder_proc *proc,
 		if (extra_buffers_size < added_size) {
 			/* integer overflow of extra_buffers_size */
 			return_error = BR_FAILED_REPLY;
-			return_error_param = EINVAL;
+			return_error_param = -EINVAL;
 			return_error_line = __LINE__;
 			goto err_bad_extra_size;
 		}
-- 
2.27.0