qemu-kvm/kvm-migration-push-Error-errp-into-vmstate_load_state.patch

From 0f7971ace7c47bc892f7814e3acada9c3f6ef339 Mon Sep 17 00:00:00 2001
From: Arun Menon <armenon@redhat.com>
Date: Thu, 18 Sep 2025 20:53:19 +0530
Subject: [PATCH 086/116] migration: push Error **errp into
 vmstate_load_state()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

RH-Author: Rodolfo Vick <None>
RH-MergeRequest: 486: Add DMABUF support
RH-Jira: RHEL-138494
RH-Acked-by: Cédric Le Goater <clg@redhat.com>
RH-Acked-by: Eric Auger <eric.auger@redhat.com>
RH-Commit: [70/100] a8ab3ad230d8f1256d992420f902562e5d39b740 (rovick1/qemu-kvm)

This is an incremental step in converting vmstate loading
code to report error via Error objects instead of directly
printing it to console/monitor.
It is ensured that vmstate_load_state() must report an error
in errp, in case of failure.

The errors are temporarily reported using error_report_err().
This is removed in the subsequent patches in this series,
when we are actually able to propagate the error to the calling
function using errp. Whereas, if we want the function to exit on
error, then error_fatal is passed.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Arun Menon <armenon@redhat.com>
Tested-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>
Link: https://lore.kernel.org/r/20250918-propagate_tpm_error-v14-2-36f11a6fb9d3@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
(cherry picked from commit c632ffbd74a497e88bbb4e4d55a357055eae6f47)
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 hw/display/virtio-gpu.c     |  2 +-
 hw/pci/pci.c                |  3 +-
 hw/s390x/virtio-ccw.c       |  2 +-
 hw/scsi/spapr_vscsi.c       |  4 ++-
 hw/vfio/pci.c               |  5 ++-
 hw/virtio/virtio-mmio.c     |  3 +-
 hw/virtio/virtio-pci.c      |  2 +-
 hw/virtio/virtio.c          |  7 +++--
 include/migration/vmstate.h |  2 +-
 migration/cpr.c             |  3 +-
 migration/savevm.c          |  8 +++--
 migration/vmstate-types.c   | 28 ++++++++++-------
 migration/vmstate.c         | 61 +++++++++++++++++++++++------------
 tests/unit/test-vmstate.c   | 63 +++++++++++++++++++++++++++++++------
 ui/vdagent.c                |  5 ++-
 15 files changed, 143 insertions(+), 55 deletions(-)

diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 0a1a625b0e..5dc31bc6bf 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -1343,7 +1343,7 @@ static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size,
     }
 
     /* load & apply scanout state */
-    vmstate_load_state(f, &vmstate_virtio_gpu_scanouts, g, 1);
+    vmstate_load_state(f, &vmstate_virtio_gpu_scanouts, g, 1, &error_fatal);
 
     return 0;
 }
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index d2ebb066e1..5b37b70815 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -934,7 +934,8 @@ void pci_device_save(PCIDevice *s, QEMUFile *f)
 int pci_device_load(PCIDevice *s, QEMUFile *f)
 {
     int ret;
-    ret = vmstate_load_state(f, &vmstate_pci_device, s, s->version_id);
+    ret = vmstate_load_state(f, &vmstate_pci_device, s, s->version_id,
+                             &error_fatal);
     /* Restore the interrupt status bit. */
     pci_update_irq_status(s);
     return ret;
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index d2f85b39f3..6a9641a03d 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -1136,7 +1136,7 @@ static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f)
 static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
 {
     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
-    return vmstate_load_state(f, &vmstate_virtio_ccw_dev, dev, 1);
+    return vmstate_load_state(f, &vmstate_virtio_ccw_dev, dev, 1, &error_fatal);
 }
 
 static void virtio_ccw_pre_plugged(DeviceState *d, Error **errp)
diff --git a/hw/scsi/spapr_vscsi.c b/hw/scsi/spapr_vscsi.c
index 20f70fb272..da173f4867 100644
--- a/hw/scsi/spapr_vscsi.c
+++ b/hw/scsi/spapr_vscsi.c
@@ -642,15 +642,17 @@ static void *vscsi_load_request(QEMUFile *f, SCSIRequest *sreq)
     VSCSIState *s = VIO_SPAPR_VSCSI_DEVICE(bus->qbus.parent);
     vscsi_req *req;
     int rc;
+    Error *local_err = NULL;
 
     assert(sreq->tag < VSCSI_REQ_LIMIT);
     req = &s->reqs[sreq->tag];
     assert(!req->active);
 
     memset(req, 0, sizeof(*req));
-    rc = vmstate_load_state(f, &vmstate_spapr_vscsi_req, req, 1);
+    rc = vmstate_load_state(f, &vmstate_spapr_vscsi_req, req, 1, &local_err);
     if (rc) {
         fprintf(stderr, "VSCSI: failed loading request tag#%u\n", sreq->tag);
+        error_report_err(local_err);
         return NULL;
     }
     assert(req->active);
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index c34ed85d5e..f696e8116f 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -2834,13 +2834,16 @@ static int vfio_pci_load_config(VFIODevice *vbasedev, QEMUFile *f)
     PCIDevice *pdev = PCI_DEVICE(vdev);
     pcibus_t old_addr[PCI_NUM_REGIONS - 1];
     int bar, ret;
+    Error *local_err = NULL;
 
     for (bar = 0; bar < PCI_ROM_SLOT; bar++) {
         old_addr[bar] = pdev->io_regions[bar].addr;
     }
 
-    ret = vmstate_load_state(f, &vmstate_vfio_pci_config, vdev, 1);
+    ret = vmstate_load_state(f, &vmstate_vfio_pci_config, vdev, 1,
+                             &local_err);
     if (ret) {
+        error_report_err(local_err);
         return ret;
     }
 
diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c
index 532c67107b..0a688909fc 100644
--- a/hw/virtio/virtio-mmio.c
+++ b/hw/virtio/virtio-mmio.c
@@ -34,6 +34,7 @@
 #include "qemu/error-report.h"
 #include "qemu/log.h"
 #include "trace.h"
+#include "qapi/error.h"
 
 static bool virtio_mmio_ioeventfd_enabled(DeviceState *d)
 {
@@ -619,7 +620,7 @@ static int virtio_mmio_load_extra_state(DeviceState *opaque, QEMUFile *f)
 {
     VirtIOMMIOProxy *proxy = VIRTIO_MMIO(opaque);
 
-    return vmstate_load_state(f, &vmstate_virtio_mmio, proxy, 1);
+    return vmstate_load_state(f, &vmstate_virtio_mmio, proxy, 1, &error_fatal);
 }
 
 static bool virtio_mmio_has_extra_state(DeviceState *opaque)
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index d38d0a5e9a..ae875bd108 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -195,7 +195,7 @@ static int virtio_pci_load_extra_state(DeviceState *d, QEMUFile *f)
 {
     VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
 
-    return vmstate_load_state(f, &vmstate_virtio_pci, proxy, 1);
+    return vmstate_load_state(f, &vmstate_virtio_pci, proxy, 1, &error_fatal);
 }
 
 static void virtio_pci_save_queue(DeviceState *d, int n, QEMUFile *f)
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 34f977a3c9..e6cbbc8624 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -3278,6 +3278,7 @@ virtio_load(VirtIODevice *vdev, QEMUFile *f, int version_id)
     BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));
     VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
+    Error *local_err = NULL;
 
     /*
      * We poison the endianness to ensure it does not get used before
@@ -3370,15 +3371,17 @@ virtio_load(VirtIODevice *vdev, QEMUFile *f, int version_id)
     }
 
     if (vdc->vmsd) {
-        ret = vmstate_load_state(f, vdc->vmsd, vdev, version_id);
+        ret = vmstate_load_state(f, vdc->vmsd, vdev, version_id, &local_err);
         if (ret) {
+            error_report_err(local_err);
             return ret;
         }
     }
 
     /* Subsections */
-    ret = vmstate_load_state(f, &vmstate_virtio, vdev, 1);
+    ret = vmstate_load_state(f, &vmstate_virtio, vdev, 1, &local_err);
     if (ret) {
+        error_report_err(local_err);
         return ret;
     }
 
diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h
index ef2f0c5c93..b9a41cc38a 100644
--- a/include/migration/vmstate.h
+++ b/include/migration/vmstate.h
@@ -1206,7 +1206,7 @@ extern const VMStateInfo vmstate_info_qlist;
     }
 
 int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
-                       void *opaque, int version_id);
+                       void *opaque, int version_id, Error **errp);
 int vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
                        void *opaque, JSONWriter *vmdesc);
 int vmstate_save_state_with_err(QEMUFile *f, const VMStateDescription *vmsd,
diff --git a/migration/cpr.c b/migration/cpr.c
index 42ad0b0d50..8abb6db76d 100644
--- a/migration/cpr.c
+++ b/migration/cpr.c
@@ -233,9 +233,8 @@ int cpr_state_load(MigrationChannel *channel, Error **errp)
         return -ENOTSUP;
     }
 
-    ret = vmstate_load_state(f, &vmstate_cpr_state, &cpr_state, 1);
+    ret = vmstate_load_state(f, &vmstate_cpr_state, &cpr_state, 1, errp);
     if (ret) {
-        error_setg(errp, "vmstate_load_state error %d", ret);
         qemu_fclose(f);
         return ret;
     }
diff --git a/migration/savevm.c b/migration/savevm.c
index fabbeb296a..f5a1ab9101 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -969,7 +969,8 @@ static int vmstate_load(QEMUFile *f, SaveStateEntry *se)
     if (!se->vmsd) {         /* Old style */
         return se->ops->load_state(f, se->opaque, se->load_version_id);
     }
-    return vmstate_load_state(f, se->vmsd, se->opaque, se->load_version_id);
+    return vmstate_load_state(f, se->vmsd, se->opaque, se->load_version_id,
+                              &error_fatal);
 }
 
 static void vmstate_save_old_style(QEMUFile *f, SaveStateEntry *se,
@@ -2817,6 +2818,7 @@ static int qemu_loadvm_state_header(QEMUFile *f)
 {
     unsigned int v;
     int ret;
+    Error *local_err = NULL;
 
     v = qemu_get_be32(f);
     if (v != QEMU_VM_FILE_MAGIC) {
@@ -2839,9 +2841,11 @@ static int qemu_loadvm_state_header(QEMUFile *f)
             error_report("Configuration section missing");
             return -EINVAL;
         }
-        ret = vmstate_load_state(f, &vmstate_configuration, &savevm_state, 0);
+        ret = vmstate_load_state(f, &vmstate_configuration, &savevm_state, 0,
+                                 &local_err);
 
         if (ret) {
+            error_report_err(local_err);
             return ret;
         }
     }
diff --git a/migration/vmstate-types.c b/migration/vmstate-types.c
index 741a588b7e..c5cfd861e3 100644
--- a/migration/vmstate-types.c
+++ b/migration/vmstate-types.c
@@ -19,6 +19,7 @@
 #include "qemu/error-report.h"
 #include "qemu/queue.h"
 #include "trace.h"
+#include "qapi/error.h"
 
 /* bool */
 
@@ -543,13 +544,17 @@ static int get_tmp(QEMUFile *f, void *pv, size_t size,
                    const VMStateField *field)
 {
     int ret;
+    Error *local_err = NULL;
     const VMStateDescription *vmsd = field->vmsd;
     int version_id = field->version_id;
     void *tmp = g_malloc(size);
 
     /* Writes the parent field which is at the start of the tmp */
     *(void **)tmp = pv;
-    ret = vmstate_load_state(f, vmsd, tmp, version_id);
+    ret = vmstate_load_state(f, vmsd, tmp, version_id, &local_err);
+    if (ret < 0) {
+        error_report_err(local_err);
+    }
     g_free(tmp);
     return ret;
 }
@@ -626,6 +631,7 @@ static int get_qtailq(QEMUFile *f, void *pv, size_t unused_size,
                       const VMStateField *field)
 {
     int ret = 0;
+    Error *local_err = NULL;
     const VMStateDescription *vmsd = field->vmsd;
     /* size of a QTAILQ element */
     size_t size = field->size;
@@ -649,8 +655,9 @@ static int get_qtailq(QEMUFile *f, void *pv, size_t unused_size,
 
     while (qemu_get_byte(f)) {
         elm = g_malloc(size);
-        ret = vmstate_load_state(f, vmsd, elm, version_id);
+        ret = vmstate_load_state(f, vmsd, elm, version_id, &local_err);
         if (ret) {
+            error_report_err(local_err);
             return ret;
         }
         QTAILQ_RAW_INSERT_TAIL(pv, elm, entry_offset);
@@ -772,6 +779,7 @@ static int get_gtree(QEMUFile *f, void *pv, size_t unused_size,
     GTree *tree = *pval;
     void *key, *val;
     int ret = 0;
+    Error *local_err = NULL;
 
     /* in case of direct key, the key vmsd can be {}, ie. check fields */
     if (!direct_key && version_id > key_vmsd->version_id) {
@@ -803,18 +811,16 @@ static int get_gtree(QEMUFile *f, void *pv, size_t unused_size,
             key = (void *)(uintptr_t)qemu_get_be64(f);
         } else {
             key = g_malloc0(key_size);
-            ret = vmstate_load_state(f, key_vmsd, key, version_id);
+            ret = vmstate_load_state(f, key_vmsd, key, version_id, &local_err);
             if (ret) {
-                error_report("%s : failed to load %s (%d)",
-                             field->name, key_vmsd->name, ret);
+                error_report_err(local_err);
                 goto key_error;
             }
         }
         val = g_malloc0(val_size);
-        ret = vmstate_load_state(f, val_vmsd, val, version_id);
+        ret = vmstate_load_state(f, val_vmsd, val, version_id, &local_err);
         if (ret) {
-            error_report("%s : failed to load %s (%d)",
-                         field->name, val_vmsd->name, ret);
+            error_report_err(local_err);
             goto val_error;
         }
         g_tree_insert(tree, key, val);
@@ -872,6 +878,7 @@ static int get_qlist(QEMUFile *f, void *pv, size_t unused_size,
                      const VMStateField *field)
 {
     int ret = 0;
+    Error *local_err = NULL;
     const VMStateDescription *vmsd = field->vmsd;
     /* size of a QLIST element */
     size_t size = field->size;
@@ -892,10 +899,9 @@ static int get_qlist(QEMUFile *f, void *pv, size_t unused_size,
 
     while (qemu_get_byte(f)) {
         elm = g_malloc(size);
-        ret = vmstate_load_state(f, vmsd, elm, version_id);
+        ret = vmstate_load_state(f, vmsd, elm, version_id, &local_err);
         if (ret) {
-            error_report("%s: failed to load %s (%d)", field->name,
-                         vmsd->name, ret);
+            error_report_err(local_err);
             g_free(elm);
             return ret;
         }
diff --git a/migration/vmstate.c b/migration/vmstate.c
index 08f2b562e3..8d1e9eb62b 100644
--- a/migration/vmstate.c
+++ b/migration/vmstate.c
@@ -132,30 +132,33 @@ static void vmstate_handle_alloc(void *ptr, const VMStateField *field,
 }
 
 int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
-                       void *opaque, int version_id)
+                       void *opaque, int version_id, Error **errp)
 {
     const VMStateField *field = vmsd->fields;
     int ret = 0;
-    Error *local_err = NULL;
 
     trace_vmstate_load_state(vmsd->name, version_id);
     if (version_id > vmsd->version_id) {
-        error_report("%s: incoming version_id %d is too new "
-                     "for local version_id %d",
-                     vmsd->name, version_id, vmsd->version_id);
+        error_setg(errp, "%s: incoming version_id %d is too new "
+                   "for local version_id %d",
+                   vmsd->name, version_id, vmsd->version_id);
         trace_vmstate_load_state_end(vmsd->name, "too new", -EINVAL);
         return -EINVAL;
     }
     if  (version_id < vmsd->minimum_version_id) {
-        error_report("%s: incoming version_id %d is too old "
-                     "for local minimum version_id  %d",
-                     vmsd->name, version_id, vmsd->minimum_version_id);
+        error_setg(errp, "%s: incoming version_id %d is too old "
+                   "for local minimum version_id %d",
+                   vmsd->name, version_id, vmsd->minimum_version_id);
         trace_vmstate_load_state_end(vmsd->name, "too old", -EINVAL);
         return -EINVAL;
     }
     if (vmsd->pre_load) {
         ret = vmsd->pre_load(opaque);
         if (ret) {
+            error_setg(errp, "pre load hook failed for: '%s', "
+                       "version_id: %d, minimum version_id: %d, ret: %d",
+                       vmsd->name, vmsd->version_id, vmsd->minimum_version_id,
+                       ret);
             return ret;
         }
     }
@@ -193,13 +196,21 @@ int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
 
                 if (inner_field->flags & VMS_STRUCT) {
                     ret = vmstate_load_state(f, inner_field->vmsd, curr_elem,
-                                             inner_field->vmsd->version_id);
+                                             inner_field->vmsd->version_id,
+                                             errp);
                 } else if (inner_field->flags & VMS_VSTRUCT) {
                     ret = vmstate_load_state(f, inner_field->vmsd, curr_elem,
-                                             inner_field->struct_version_id);
+                                             inner_field->struct_version_id,
+                                             errp);
                 } else {
                     ret = inner_field->info->get(f, curr_elem, size,
                                                  inner_field);
+                    if (ret < 0) {
+                        error_setg(errp,
+                                   "Failed to load element of type %s for %s: "
+                                   "%d", inner_field->info->name,
+                                   inner_field->name, ret);
+                    }
                 }
 
                 /* If we used a fake temp field.. free it now */
@@ -209,31 +220,40 @@ int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
 
                 if (ret >= 0) {
                     ret = qemu_file_get_error(f);
+                    if (ret < 0) {
+                        error_setg(errp,
+                                   "Failed to load %s state: stream error: %d",
+                                   vmsd->name, ret);
+                    }
                 }
                 if (ret < 0) {
                     qemu_file_set_error(f, ret);
-                    error_report("Failed to load %s:%s", vmsd->name,
-                                 field->name);
                     trace_vmstate_load_field_error(field->name, ret);
                     return ret;
                 }
             }
         } else if (field->flags & VMS_MUST_EXIST) {
-            error_report("Input validation failed: %s/%s",
-                         vmsd->name, field->name);
+            error_setg(errp, "Input validation failed: %s/%s version_id: %d",
+                       vmsd->name, field->name, vmsd->version_id);
             return -1;
         }
         field++;
     }
     assert(field->flags == VMS_END);
-    ret = vmstate_subsection_load(f, vmsd, opaque, &local_err);
+    ret = vmstate_subsection_load(f, vmsd, opaque, errp);
     if (ret != 0) {
         qemu_file_set_error(f, ret);
-        error_report_err(local_err);
         return ret;
     }
     if (vmsd->post_load) {
         ret = vmsd->post_load(opaque, version_id);
+        if (ret < 0) {
+            error_setg(errp,
+                       "post load hook failed for: %s, version_id: %d, "
+                       "minimum_version: %d, ret: %d",
+                       vmsd->name, vmsd->version_id, vmsd->minimum_version_id,
+                       ret);
+        }
     }
     trace_vmstate_load_state_end(vmsd->name, "end", ret);
     return ret;
@@ -570,6 +590,7 @@ vmstate_get_subsection(const VMStateDescription * const *sub,
 static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd,
                                    void *opaque, Error **errp)
 {
+    ERRP_GUARD();
     trace_vmstate_subsection_load(vmsd->name);
 
     while (qemu_peek_byte(f, 0) == QEMU_VM_SUBSECTION) {
@@ -609,12 +630,12 @@ static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd,
         qemu_file_skip(f, len); /* idstr */
         version_id = qemu_get_be32(f);
 
-        ret = vmstate_load_state(f, sub_vmsd, opaque, version_id);
+        ret = vmstate_load_state(f, sub_vmsd, opaque, version_id, errp);
         if (ret) {
             trace_vmstate_subsection_load_bad(vmsd->name, idstr, "(child)");
-            error_setg(errp,
-                       "Loading VM subsection '%s' in '%s' failed: %d",
-                       idstr, vmsd->name, ret);
+            error_prepend(errp,
+                          "Loading VM subsection '%s' in '%s' failed: %d: ",
+                          idstr, vmsd->name, ret);
             return ret;
         }
     }
diff --git a/tests/unit/test-vmstate.c b/tests/unit/test-vmstate.c
index 63f28f26f4..4ff0ab632f 100644
--- a/tests/unit/test-vmstate.c
+++ b/tests/unit/test-vmstate.c
@@ -30,6 +30,7 @@
 #include "../migration/savevm.h"
 #include "qemu/module.h"
 #include "io/channel-file.h"
+#include "qapi/error.h"
 
 static int temp_fd;
 
@@ -108,14 +109,16 @@ static int load_vmstate_one(const VMStateDescription *desc, void *obj,
 {
     QEMUFile *f;
     int ret;
+    Error *local_err = NULL;
 
     f = open_test_file(true);
     qemu_put_buffer(f, wire, size);
     qemu_fclose(f);
 
     f = open_test_file(false);
-    ret = vmstate_load_state(f, desc, obj, version);
+    ret = vmstate_load_state(f, desc, obj, version, &local_err);
     if (ret) {
+        error_report_err(local_err);
         g_assert(qemu_file_get_error(f));
     } else{
         g_assert(!qemu_file_get_error(f));
@@ -355,6 +358,8 @@ static const VMStateDescription vmstate_versioned = {
 
 static void test_load_v1(void)
 {
+    Error *local_err = NULL;
+    int ret;
     uint8_t buf[] = {
         0, 0, 0, 10,             /* a */
         0, 0, 0, 30,             /* c */
@@ -365,7 +370,10 @@ static void test_load_v1(void)
 
     QEMUFile *loading = open_test_file(false);
     TestStruct obj = { .b = 200, .e = 500, .f = 600 };
-    vmstate_load_state(loading, &vmstate_versioned, &obj, 1);
+    ret = vmstate_load_state(loading, &vmstate_versioned, &obj, 1, &local_err);
+    if (ret < 0) {
+        error_report_err(local_err);
+    }
     g_assert(!qemu_file_get_error(loading));
     g_assert_cmpint(obj.a, ==, 10);
     g_assert_cmpint(obj.b, ==, 200);
@@ -378,6 +386,8 @@ static void test_load_v1(void)
 
 static void test_load_v2(void)
 {
+    Error *local_err = NULL;
+    int ret;
     uint8_t buf[] = {
         0, 0, 0, 10,             /* a */
         0, 0, 0, 20,             /* b */
@@ -391,7 +401,10 @@ static void test_load_v2(void)
 
     QEMUFile *loading = open_test_file(false);
     TestStruct obj;
-    vmstate_load_state(loading, &vmstate_versioned, &obj, 2);
+    ret = vmstate_load_state(loading, &vmstate_versioned, &obj, 2, &local_err);
+    if (ret < 0) {
+        error_report_err(local_err);
+    }
     g_assert_cmpint(obj.a, ==, 10);
     g_assert_cmpint(obj.b, ==, 20);
     g_assert_cmpint(obj.c, ==, 30);
@@ -467,6 +480,8 @@ static void test_save_skip(void)
 
 static void test_load_noskip(void)
 {
+    Error *local_err = NULL;
+    int ret;
     uint8_t buf[] = {
         0, 0, 0, 10,             /* a */
         0, 0, 0, 20,             /* b */
@@ -480,7 +495,10 @@ static void test_load_noskip(void)
 
     QEMUFile *loading = open_test_file(false);
     TestStruct obj = { .skip_c_e = false };
-    vmstate_load_state(loading, &vmstate_skipping, &obj, 2);
+    ret = vmstate_load_state(loading, &vmstate_skipping, &obj, 2, &local_err);
+    if (ret < 0) {
+        error_report_err(local_err);
+    }
     g_assert(!qemu_file_get_error(loading));
     g_assert_cmpint(obj.a, ==, 10);
     g_assert_cmpint(obj.b, ==, 20);
@@ -493,6 +511,8 @@ static void test_load_noskip(void)
 
 static void test_load_skip(void)
 {
+    Error *local_err = NULL;
+    int ret;
     uint8_t buf[] = {
         0, 0, 0, 10,             /* a */
         0, 0, 0, 20,             /* b */
@@ -504,7 +524,10 @@ static void test_load_skip(void)
 
     QEMUFile *loading = open_test_file(false);
     TestStruct obj = { .skip_c_e = true, .c = 300, .e = 500 };
-    vmstate_load_state(loading, &vmstate_skipping, &obj, 2);
+    ret = vmstate_load_state(loading, &vmstate_skipping, &obj, 2, &local_err);
+    if (ret < 0) {
+        error_report_err(local_err);
+    }
     g_assert(!qemu_file_get_error(loading));
     g_assert_cmpint(obj.a, ==, 10);
     g_assert_cmpint(obj.b, ==, 20);
@@ -744,6 +767,8 @@ static void test_save_q(void)
 
 static void test_load_q(void)
 {
+    int ret;
+    Error *local_err = NULL;
     TestQtailq obj_q = {
         .i16 = -512,
         .i32 = 70000,
@@ -773,7 +798,10 @@ static void test_load_q(void)
     TestQtailq tgt;
 
     QTAILQ_INIT(&tgt.q);
-    vmstate_load_state(fload, &vmstate_q, &tgt, 1);
+    ret = vmstate_load_state(fload, &vmstate_q, &tgt, 1, &local_err);
+    if (ret < 0) {
+        error_report_err(local_err);
+    }
     char eof = qemu_get_byte(fload);
     g_assert(!qemu_file_get_error(fload));
     g_assert_cmpint(tgt.i16, ==, obj_q.i16);
@@ -1115,6 +1143,8 @@ static void diff_iommu(TestGTreeIOMMU *iommu1, TestGTreeIOMMU *iommu2)
 
 static void test_gtree_load_domain(void)
 {
+    Error *local_err = NULL;
+    int ret;
     TestGTreeDomain *dest_domain = g_new0(TestGTreeDomain, 1);
     TestGTreeDomain *orig_domain = create_first_domain();
     QEMUFile *fload, *fsave;
@@ -1127,7 +1157,11 @@ static void test_gtree_load_domain(void)
 
     fload = open_test_file(false);
 
-    vmstate_load_state(fload, &vmstate_domain, dest_domain, 1);
+    ret = vmstate_load_state(fload, &vmstate_domain, dest_domain, 1,
+                             &local_err);
+    if (ret < 0) {
+        error_report_err(local_err);
+    }
     eof = qemu_get_byte(fload);
     g_assert(!qemu_file_get_error(fload));
     g_assert_cmpint(orig_domain->id, ==, dest_domain->id);
@@ -1230,6 +1264,8 @@ static void test_gtree_save_iommu(void)
 
 static void test_gtree_load_iommu(void)
 {
+    Error *local_err = NULL;
+    int ret;
     TestGTreeIOMMU *dest_iommu = g_new0(TestGTreeIOMMU, 1);
     TestGTreeIOMMU *orig_iommu = create_iommu();
     QEMUFile *fsave, *fload;
@@ -1241,7 +1277,10 @@ static void test_gtree_load_iommu(void)
     qemu_fclose(fsave);
 
     fload = open_test_file(false);
-    vmstate_load_state(fload, &vmstate_iommu, dest_iommu, 1);
+    ret = vmstate_load_state(fload, &vmstate_iommu, dest_iommu, 1, &local_err);
+    if (ret < 0) {
+        error_report_err(local_err);
+    }
     eof = qemu_get_byte(fload);
     g_assert(!qemu_file_get_error(fload));
     g_assert_cmpint(orig_iommu->id, ==, dest_iommu->id);
@@ -1363,6 +1402,8 @@ static void test_save_qlist(void)
 
 static void test_load_qlist(void)
 {
+    Error *local_err = NULL;
+    int ret;
     QEMUFile *fsave, *fload;
     TestQListContainer *orig_container = alloc_container();
     TestQListContainer *dest_container = g_new0(TestQListContainer, 1);
@@ -1376,7 +1417,11 @@ static void test_load_qlist(void)
     qemu_fclose(fsave);
 
     fload = open_test_file(false);
-    vmstate_load_state(fload, &vmstate_container, dest_container, 1);
+    ret = vmstate_load_state(fload, &vmstate_container, dest_container, 1,
+                             &local_err);
+    if (ret < 0) {
+        error_report_err(local_err);
+    }
     eof = qemu_get_byte(fload);
     g_assert(!qemu_file_get_error(fload));
     g_assert_cmpint(eof, ==, QEMU_VM_EOF);
diff --git a/ui/vdagent.c b/ui/vdagent.c
index c0746fe5b1..bc3c77f013 100644
--- a/ui/vdagent.c
+++ b/ui/vdagent.c
@@ -1001,6 +1001,7 @@ static int get_cbinfo(QEMUFile *f, void *pv, size_t size,
     VDAgentChardev *vd = QEMU_VDAGENT_CHARDEV(pv);
     struct CBInfoArray cbinfo = {};
     int i, ret;
+    Error *local_err = NULL;
 
     if (!have_clipboard(vd)) {
         return 0;
@@ -1008,8 +1009,10 @@ static int get_cbinfo(QEMUFile *f, void *pv, size_t size,
 
     vdagent_clipboard_peer_register(vd);
 
-    ret = vmstate_load_state(f, &vmstate_cbinfo_array, &cbinfo, 0);
+    ret = vmstate_load_state(f, &vmstate_cbinfo_array, &cbinfo, 0,
+                             &local_err);
     if (ret) {
+        error_report_err(local_err);
         return ret;
     }
 
-- 
2.52.0