From 7f27d20ded2f480f3e66d03f90ea71507b834276 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 27 Jun 2022 15:45:00 +0200 Subject: [PATCH] libvhost-user: Fix VHOST_USER_ADD_MEM_REG reply With REPLY_NEEDED, libvhost-user sends both the acutal result and an additional ACK reply for VHOST_USER_ADD_MEM_REG. This is incorrect, the spec mandates that it behave the same with and without REPLY_NEEDED because it always sends a reply. Fixes: ec94c8e621de96c50c2d381c8c9ec94f5beec7c1 Signed-off-by: Kevin Wolf Message-Id: <20220627134500.94842-4-kwolf@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- subprojects/libvhost-user/libvhost-user.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/subprojects/libvhost-user/libvhost-user.c b/subprojects/libvhost-user/libvhost-user.c index cfa1bcc334..ffed4729a3 100644 --- a/subprojects/libvhost-user/libvhost-user.c +++ b/subprojects/libvhost-user/libvhost-user.c @@ -779,15 +779,9 @@ vu_add_mem_reg(VuDev *dev, VhostUserMsg *vmsg) { /* Send the message back to qemu with the addresses filled in. */ vmsg->fd_num = 0; - if (!vu_send_reply(dev, dev->sock, vmsg)) { - vu_panic(dev, "failed to respond to add-mem-region for postcopy"); - return false; - } - DPRINT("Successfully added new region in postcopy\n"); dev->nregions++; - return false; - + return true; } else { for (i = 0; i < dev->max_queues; i++) { if (dev->vq[i].vring.desc) {