| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 48/92] VSOCK: fix loopback on big-endian systems | Date | Fri, 20 Jul 2018 14:13:52 +0200 |
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4.14-stable review patch. If anyone has any objections, please let me know.
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From: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
[ Upstream commit e5ab564c9ebee77794842ca7d7476147b83d6a27 ]
The dst_cid and src_cid are 64 bits, therefore 64 bit accessors should be used, and in fact in virtio_transport_common.c only 64 bit accessors are used. Using 32 bit accessors for 64 bit values breaks big endian systems.
This patch fixes a wrong use of le32_to_cpu in virtio_transport_send_pkt.
Fixes: b9116823189e85ccf384 ("VSOCK: add loopback to virtio_transport")
Signed-off-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/vmw_vsock/virtio_transport.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/vmw_vsock/virtio_transport.c +++ b/net/vmw_vsock/virtio_transport.c @@ -201,7 +201,7 @@ virtio_transport_send_pkt(struct virtio_ return -ENODEV; } - if (le32_to_cpu(pkt->hdr.dst_cid) == vsock->guest_cid) + if (le64_to_cpu(pkt->hdr.dst_cid) == vsock->guest_cid) return virtio_transport_send_pkt_loopback(vsock, pkt); if (pkt->reply)
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