rjmcmahon
/
umber-kernel
1
0
Fork 0
Code Issues 1 Pull Requests Packages Projects Releases Wiki Activity

rnbd-srv: Zero the rsp buffer before using it 

[ Upstream commit 69d26698e4fd44935510553809007151b2fe4db5 ]

Before using the data buffer to send back the response message, zero it
completely. This prevents any stray bytes to be picked up by the client
side when there the message is exchanged between different protocol
versions.

Signed-off-by: Md Haris Iqbal <haris.iqbal@ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Grzegorz Prajsner <grzegorz.prajsner@ionos.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Md Haris Iqbal 2025-12-05 13:47:33 +01:00 committed by Sasha Levin
parent fd51d47fca
commit c94ede3c43
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/block/rnbd/rnbd-srv.c
View File

@ -551,6 +551,8 @@ static void rnbd_srv_fill_msg_open_rsp(struct rnbd_msg_open_rsp *rsp,
{
struct block_device *bdev = file_bdev(sess_dev->bdev_file);
memset(rsp, 0, sizeof(*rsp));
rsp->hdr.type = cpu_to_le16(RNBD_MSG_OPEN_RSP);
rsp->device_id = cpu_to_le32(sess_dev->device_id);
rsp->nsectors = cpu_to_le64(bdev_nr_sectors(bdev));
@ -657,6 +659,7 @@ static void process_msg_sess_info(struct rnbd_srv_session *srv_sess,
trace_process_msg_sess_info(srv_sess, sess_info_msg);
memset(rsp, 0, sizeof(*rsp));
rsp->hdr.type = cpu_to_le16(RNBD_MSG_SESS_INFO_RSP);
rsp->ver = srv_sess->ver;
}