linux-kernel - [PATCH AUTOSEL 6.4 3/4] Bluetooth: MGMT: Use correct address for memcpy()

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Message-Id: <20230803130419.641865-3-sashal@kernel.org>
Date:   Thu,  3 Aug 2023 09:04:17 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Luiz Augusto von Dentz <luiz.von.dentz@...el.com>,
        Sasha Levin <sashal@...nel.org>, marcel@...tmann.org,
        johan.hedberg@...il.com, luiz.dentz@...il.com,
        linux-bluetooth@...r.kernel.org
Subject: [PATCH AUTOSEL 6.4 3/4] Bluetooth: MGMT: Use correct address for memcpy()

From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

[ Upstream commit d1f0a9816f5fbc1316355ec1aa4ddfb9b624cca5 ]

In function ‘fortify_memcpy_chk’,
    inlined from ‘get_conn_info_complete’ at net/bluetooth/mgmt.c:7281:2:
include/linux/fortify-string.h:592:25: error: call to
‘__read_overflow2_field’ declared with attribute warning: detected read
beyond size of field (2nd parameter); maybe use struct_group()?
[-Werror=attribute-warning]
  592 |                         __read_overflow2_field(q_size_field, size);
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

This is due to the wrong member is used for memcpy(). Use correct one.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 net/bluetooth/mgmt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index f7b2d0971f240..b5a26a32f3323 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -7285,7 +7285,7 @@ static void get_conn_info_complete(struct hci_dev *hdev, void *data, int err)
 
 	bt_dev_dbg(hdev, "err %d", err);
 
-	memcpy(&rp.addr, &cp->addr.bdaddr, sizeof(rp.addr));
+	memcpy(&rp.addr, &cp->addr, sizeof(rp.addr));
 
 	status = mgmt_status(err);
 	if (status == MGMT_STATUS_SUCCESS) {
-- 
2.40.1