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Commit b597b0e2 authored by Varun Prakash's avatar Varun Prakash Committed by Greg Kroah-Hartman
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nvmet-tcp: fix data digest pointer calculation 



commit e790de54e94a7a15fb725b34724d41d41cbaa60c upstream.

exp_ddgst is of type __le32, &cmd->exp_ddgst + cmd->offset increases
&cmd->exp_ddgst by 4 * cmd->offset, fix this by type casting
&cmd->exp_ddgst to u8 *.

Fixes: 872d26a3 ("nvmet-tcp: add NVMe over TCP target driver")
Signed-off-by: default avatarVarun Prakash <varun@chelsio.com>
Reviewed-by: default avatarSagi Grimberg <sagi@grimberg.me>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d997d4e4

drivers/nvme/target/tcp.c

+1 −1
Original line number Diff line number Diff line
@@ -633,7 +633,7 @@ static int nvmet_try_send_ddgst(struct nvmet_tcp_cmd *cmd) 
	struct nvmet_tcp_queue *queue = cmd->queue;

	struct msghdr msg = { .msg_flags = MSG_DONTWAIT };

	struct kvec iov = {

		.iov_base = &cmd->exp_ddgst + cmd->offset,

		.iov_base = (u8 *)&cmd->exp_ddgst + cmd->offset,

		.iov_len = NVME_TCP_DIGEST_LENGTH - cmd->offset

	};

	int ret;