From: Varun Prakash <varun@chelsio.com>
Date: Mon, 25 Oct 2021 22:47:30 +0530
Subject: [PATCH] nvme-tcp: fix data digest pointer calculation
Git-commit: d89b9f3bbb58e9e378881209756b0723694f22ff
Patch-mainline: v5.15-rc1
References: git-fixes
ddgst is of type __le32, &req->ddgst + req->offset
increases &req->ddgst by 4 * req->offset, fix this by
type casting &req->ddgst to u8 *.
Fixes: 3f2304f8c6d6 ("nvme-tcp: add NVMe over TCP host driver")
Signed-off-by: Varun Prakash <varun@chelsio.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Hannes Reinecke <hare@suse.com>
---
drivers/nvme/host/tcp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index 1a209f0d7181..4ae562d30d2b 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -1054,7 +1054,7 @@ static int nvme_tcp_try_send_ddgst(struct nvme_tcp_request *req)
int ret;
struct msghdr msg = { .msg_flags = MSG_DONTWAIT };
struct kvec iov = {
- .iov_base = &req->ddgst + req->offset,
+ .iov_base = (u8 *)&req->ddgst + req->offset,
.iov_len = NVME_TCP_DIGEST_LENGTH - req->offset
};
--
2.29.2