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Commit 13ad93a4 authored by Varun Prakash's avatar Varun Prakash Committed by Greg Kroah-Hartman
Browse files

nvme-tcp: fix data digest pointer calculation 



commit d89b9f3bbb58e9e378881209756b0723694f22ff upstream.

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: 3f2304f8 ("nvme-tcp: add NVMe over TCP host 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 b597b0e2

drivers/nvme/host/tcp.c

+1 −1
Original line number Diff line number Diff line
@@ -962,7 +962,7 @@ static int nvme_tcp_try_send_ddgst(struct nvme_tcp_request *req) 
	int ret;

	struct msghdr msg = { .msg_flags = MSG_DONTWAIT | MSG_EOR };

	struct kvec iov = {

		.iov_base = &req->ddgst + req->offset,

		.iov_base = (u8 *)&req->ddgst + req->offset,

		.iov_len = NVME_TCP_DIGEST_LENGTH - req->offset

	};