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nvmet-tcp: fix data digest pointer calculation

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commit e790de54e9 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: 872d26a391 ("nvmet-tcp: add NVMe over TCP target driver")
Signed-off-by: Varun Prakash <varun@chelsio.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Varun Prakash 2021-10-25 22:46:54 +05:30 committed by Greg Kroah-Hartman
parent d98883f6c3
commit 4286c72c53
1 changed files with 1 additions and 1 deletions
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2
drivers/nvme/target/tcp.c
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@ -690,7 +690,7 @@ static int nvmet_try_send_ddgst(struct nvmet_tcp_cmd *cmd, bool last_in_batch)
struct nvmet_tcp_queue *queue = cmd->queue; struct nvmet_tcp_queue *queue = cmd->queue;
struct msghdr msg = { .msg_flags = MSG_DONTWAIT }; struct msghdr msg = { .msg_flags = MSG_DONTWAIT };
struct kvec iov = { 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 .iov_len = NVME_TCP_DIGEST_LENGTH - cmd->offset
}; };
int ret; int ret;