From 98052c40e3acc2d3c04a7bbed82490676dff0efa Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Fri, 12 Mar 2021 15:09:13 +0100 Subject: [PATCH] vhost: Fix vhost_vq_reset() [ Upstream commit beb691e69f4dec7bfe8b81b509848acfd1f0dbf9 ] vhost_reset_is_le() is vhost_init_is_le(), and in the case of cross-endian legacy, vhost_init_is_le() depends on vq->user_be. vq->user_be is set by vhost_disable_cross_endian(). But in vhost_vq_reset(), we have: vhost_reset_is_le(vq); vhost_disable_cross_endian(vq); And so user_be is used before being set. To fix that, reverse the lines order as there is no other dependency between them. Signed-off-by: Laurent Vivier Link: https://lore.kernel.org/r/20210312140913.788592-1-lvivier@redhat.com Signed-off-by: Michael S. Tsirkin Signed-off-by: Sasha Levin --- drivers/vhost/vhost.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index 57ab79fbcee9..a279ecacbf60 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -320,8 +320,8 @@ static void vhost_vq_reset(struct vhost_dev *dev, vq->kick = NULL; vq->call_ctx = NULL; vq->log_ctx = NULL; - vhost_reset_is_le(vq); vhost_disable_cross_endian(vq); + vhost_reset_is_le(vq); vq->busyloop_timeout = 0; vq->umem = NULL; vq->iotlb = NULL;