libvhost-user: fix VHOST_USER_REM_MEM_REG not closing the fd

We end up not closing the file descriptor, resulting in leaking one
file descriptor for each VHOST_USER_REM_MEM_REG message.

Fixes: 875b9fd97b34 ("Support individual region unmap in libvhost-user")
Cc: Michael S. Tsirkin <[email protected]>
Cc: Raphael Norwitz <[email protected]>
Cc: "Marc-André Lureau" <[email protected]>
Cc: Stefan Hajnoczi <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Cc: Coiby Xu <[email protected]>
Signed-off-by: David Hildenbrand <[email protected]>
Signed-off-by: Raphael Norwitz <[email protected]>
Message-Id: <[email protected]>
Reviewed-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/subprojects/libvhost-user/libvhost-user.c b/subprojects/libvhost-user/libvhost-user.c
index 7dd8e918b4..3f4d7221ca 100644
--- a/subprojects/libvhost-user/libvhost-user.c
+++ b/subprojects/libvhost-user/libvhost-user.c
@@ -868,6 +868,8 @@ vu_rem_mem_reg(VuDev *dev, VhostUserMsg *vmsg) {
         vu_panic(dev, "Specified region not found\n");
     }
 
+    close(vmsg->fds[0]);
+
     return true;
 }