nvmet-tcp: pass iov_len instead of sg->length to bvec_set_page()

[ Upstream commit 1f0bbf28940cf5edad90ab57b62aa8197bf5e836 ]

iov_len is the valid data length, so pass iov_len instead of sg->length to
bvec_set_page().

Fixes: 5bfaba275ae6 ("nvmet-tcp: don't map pages which can't come from HIGHMEM")
Signed-off-by: Rakshana Sridhar <rakshanas@chelsio.com>
Signed-off-by: Varun Prakash <varun@chelsio.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c
index c5759eb..5e29da9 100644 (file)
--- a/drivers/nvme/target/tcp.c
+++ b/drivers/nvme/target/tcp.c
@@ -321,7 +321,7 @@ static void nvmet_tcp_build_pdu_iovec(struct nvmet_tcp_cmd *cmd)
        while (length) {
                u32 iov_len = min_t(u32, length, sg->length - sg_offset);
 
-               bvec_set_page(iov, sg_page(sg), sg->length,
+               bvec_set_page(iov, sg_page(sg), iov_len,
                                sg->offset + sg_offset);
 
                length -= iov_len;