diff --git a/.gitlab-ci.d/crossbuild-template.yml b/.gitlab-ci.d/crossbuild-template.yml
index 1be541174c..7d3ad00a1e 100644
--- a/.gitlab-ci.d/crossbuild-template.yml
+++ b/.gitlab-ci.d/crossbuild-template.yml
@@ -11,6 +11,11 @@
           i386-softmmu microblaze-softmmu mips-softmmu mipsel-softmmu
           mips64-softmmu ppc-softmmu sh4-softmmu xtensa-softmmu"
     - make -j$(expr $(nproc) + 1) all check-build $MAKE_CHECK_ARGS
+    - if grep -q "EXESUF=.exe" config-host.mak;
+      then make installer;
+      version="$(git describe --match v[0-9]*)";
+      mv -v qemu-setup*.exe qemu-setup-${version}.exe;
+      fi
 
 # Job to cross-build specific accelerators.
 #
diff --git a/.gitlab-ci.d/crossbuilds.yml b/.gitlab-ci.d/crossbuilds.yml
index 6b3865c9e8..4ff3aa3cfc 100644
--- a/.gitlab-ci.d/crossbuilds.yml
+++ b/.gitlab-ci.d/crossbuilds.yml
@@ -160,6 +160,9 @@ cross-win32-system:
     job: win32-fedora-cross-container
   variables:
     IMAGE: fedora-win32-cross
+  artifacts:
+    paths:
+      - build/qemu-setup*.exe
 
 cross-win64-system:
   extends: .cross_system_build_job
@@ -167,6 +170,9 @@ cross-win64-system:
     job: win64-fedora-cross-container
   variables:
     IMAGE: fedora-win64-cross
+  artifacts:
+    paths:
+      - build/qemu-setup*.exe
 
 cross-amd64-xen-only:
   extends: .cross_accel_build_job
diff --git a/configure b/configure
index 49b5481139..63f38fa94c 100755
--- a/configure
+++ b/configure
@@ -2365,24 +2365,27 @@ feature_not_found() {
 # ---
 # big/little endian test
 cat > $TMPC << EOF
+#include <stdio.h>
 short big_endian[] = { 0x4269, 0x4765, 0x4e64, 0x4961, 0x4e00, 0, };
 short little_endian[] = { 0x694c, 0x7454, 0x654c, 0x6e45, 0x6944, 0x6e41, 0, };
-extern int foo(short *, short *);
-int main(int argc, char *argv[]) {
-    return foo(big_endian, little_endian);
+int main(int argc, char *argv[])
+{
+    return printf("%s %s\n", (char *)big_endian, (char *)little_endian);
 }
 EOF
 
-if compile_object ; then
-    if strings -a $TMPO | grep -q BiGeNdIaN ; then
+if compile_prog ; then
+    if strings -a $TMPE | grep -q BiGeNdIaN ; then
         bigendian="yes"
-    elif strings -a $TMPO | grep -q LiTtLeEnDiAn ; then
+    elif strings -a $TMPE | grep -q LiTtLeEnDiAn ; then
         bigendian="no"
     else
         echo big/little test failed
+        exit 1
     fi
 else
     echo big/little test failed
+    exit 1
 fi
 
 ##########################################
diff --git a/hw/ide/ioport.c b/hw/ide/ioport.c
index b613ff3bba..e6caa537fa 100644
--- a/hw/ide/ioport.c
+++ b/hw/ide/ioport.c
@@ -50,15 +50,19 @@ static const MemoryRegionPortio ide_portio2_list[] = {
     PORTIO_END_OF_LIST(),
 };
 
-void ide_init_ioport(IDEBus *bus, ISADevice *dev, int iobase, int iobase2)
+int ide_init_ioport(IDEBus *bus, ISADevice *dev, int iobase, int iobase2)
 {
+    int ret;
+
     /* ??? Assume only ISA and PCI configurations, and that the PCI-ISA
        bridge has been setup properly to always register with ISA.  */
-    isa_register_portio_list(dev, &bus->portio_list,
-                             iobase, ide_portio_list, bus, "ide");
+    ret = isa_register_portio_list(dev, &bus->portio_list,
+                                   iobase, ide_portio_list, bus, "ide");
 
-    if (iobase2) {
-        isa_register_portio_list(dev, &bus->portio2_list,
-                                 iobase2, ide_portio2_list, bus, "ide");
+    if (ret == 0 && iobase2) {
+        ret = isa_register_portio_list(dev, &bus->portio2_list,
+                                       iobase2, ide_portio2_list, bus, "ide");
     }
+
+    return ret;
 }
diff --git a/hw/ide/piix.c b/hw/ide/piix.c
index b9860e35a5..d3e738320b 100644
--- a/hw/ide/piix.c
+++ b/hw/ide/piix.c
@@ -26,6 +26,7 @@
 #include "qemu/osdep.h"
 #include "hw/pci/pci.h"
 #include "migration/vmstate.h"
+#include "qapi/error.h"
 #include "qemu/module.h"
 #include "sysemu/block-backend.h"
 #include "sysemu/blockdev.h"
@@ -123,7 +124,8 @@ static void piix_ide_reset(DeviceState *dev)
     pci_conf[0x20] = 0x01; /* BMIBA: 20-23h */
 }
 
-static void pci_piix_init_ports(PCIIDEState *d) {
+static int pci_piix_init_ports(PCIIDEState *d)
+{
     static const struct {
         int iobase;
         int iobase2;
@@ -132,24 +134,30 @@ static void pci_piix_init_ports(PCIIDEState *d) {
         {0x1f0, 0x3f6, 14},
         {0x170, 0x376, 15},
     };
-    int i;
+    int i, ret;
 
     for (i = 0; i < 2; i++) {
         ide_bus_new(&d->bus[i], sizeof(d->bus[i]), DEVICE(d), i, 2);
-        ide_init_ioport(&d->bus[i], NULL, port_info[i].iobase,
-                        port_info[i].iobase2);
+        ret = ide_init_ioport(&d->bus[i], NULL, port_info[i].iobase,
+                              port_info[i].iobase2);
+        if (ret) {
+            return ret;
+        }
         ide_init2(&d->bus[i], isa_get_irq(NULL, port_info[i].isairq));
 
         bmdma_init(&d->bus[i], &d->bmdma[i], d);
         d->bmdma[i].bus = &d->bus[i];
         ide_register_restart_cb(&d->bus[i]);
     }
+
+    return 0;
 }
 
 static void pci_piix_ide_realize(PCIDevice *dev, Error **errp)
 {
     PCIIDEState *d = PCI_IDE(dev);
     uint8_t *pci_conf = dev->config;
+    int rc;
 
     pci_conf[PCI_CLASS_PROG] = 0x80; // legacy ATA mode
 
@@ -158,7 +166,11 @@ static void pci_piix_ide_realize(PCIDevice *dev, Error **errp)
 
     vmstate_register(VMSTATE_IF(dev), 0, &vmstate_ide_pci, d);
 
-    pci_piix_init_ports(d);
+    rc = pci_piix_init_ports(d);
+    if (rc) {
+        error_setg_errno(errp, -rc, "Failed to realize %s",
+                         object_get_typename(OBJECT(dev)));
+    }
 }
 
 int pci_piix3_xen_ide_unplug(DeviceState *dev, bool aux)
diff --git a/hw/isa/isa-bus.c b/hw/isa/isa-bus.c
index 7820068e6e..cffaa35e9c 100644
--- a/hw/isa/isa-bus.c
+++ b/hw/isa/isa-bus.c
@@ -131,13 +131,17 @@ void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start)
     isa_init_ioport(dev, start);
 }
 
-void isa_register_portio_list(ISADevice *dev,
-                              PortioList *piolist, uint16_t start,
-                              const MemoryRegionPortio *pio_start,
-                              void *opaque, const char *name)
+int isa_register_portio_list(ISADevice *dev,
+                             PortioList *piolist, uint16_t start,
+                             const MemoryRegionPortio *pio_start,
+                             void *opaque, const char *name)
 {
     assert(piolist && !piolist->owner);
 
+    if (!isabus) {
+        return -ENODEV;
+    }
+
     /* START is how we should treat DEV, regardless of the actual
        contents of the portio array.  This is how the old code
        actually handled e.g. the FDC device.  */
@@ -145,6 +149,8 @@ void isa_register_portio_list(ISADevice *dev,
 
     portio_list_init(piolist, OBJECT(dev), pio_start, opaque, name);
     portio_list_add(piolist, isabus->address_space_io, start);
+
+    return 0;
 }
 
 static void isa_device_init(Object *obj)
diff --git a/hw/net/net_tx_pkt.c b/hw/net/net_tx_pkt.c
index 1f9aa59eca..1cb1125d9f 100644
--- a/hw/net/net_tx_pkt.c
+++ b/hw/net/net_tx_pkt.c
@@ -450,11 +450,13 @@ void net_tx_pkt_reset(struct NetTxPkt *pkt)
     pkt->payload_len = 0;
     pkt->payload_frags = 0;
 
-    assert(pkt->raw);
-    for (i = 0; i < pkt->raw_frags; i++) {
-        assert(pkt->raw[i].iov_base);
-        pci_dma_unmap(pkt->pci_dev, pkt->raw[i].iov_base, pkt->raw[i].iov_len,
-                      DMA_DIRECTION_TO_DEVICE, 0);
+    if (pkt->max_raw_frags > 0) {
+        assert(pkt->raw);
+        for (i = 0; i < pkt->raw_frags; i++) {
+            assert(pkt->raw[i].iov_base);
+            pci_dma_unmap(pkt->pci_dev, pkt->raw[i].iov_base,
+                          pkt->raw[i].iov_len, DMA_DIRECTION_TO_DEVICE, 0);
+        }
     }
     pkt->raw_frags = 0;
 
diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c
index eff299f629..f6bd8c53b1 100644
--- a/hw/net/vmxnet3.c
+++ b/hw/net/vmxnet3.c
@@ -23,6 +23,7 @@
 #include "net/checksum.h"
 #include "sysemu/sysemu.h"
 #include "qemu/bswap.h"
+#include "qemu/log.h"
 #include "qemu/module.h"
 #include "hw/pci/msix.h"
 #include "hw/pci/msi.h"
@@ -1093,8 +1094,12 @@ vmxnet3_io_bar0_write(void *opaque, hwaddr addr,
         int tx_queue_idx =
             VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_TXPROD,
                                      VMXNET3_REG_ALIGN);
-        assert(tx_queue_idx <= s->txq_num);
-        vmxnet3_process_tx_queue(s, tx_queue_idx);
+        if (tx_queue_idx <= s->txq_num) {
+            vmxnet3_process_tx_queue(s, tx_queue_idx);
+        } else {
+            qemu_log_mask(LOG_GUEST_ERROR, "vmxnet3: Illegal TX queue %d/%d\n",
+                          tx_queue_idx, s->txq_num);
+        }
         return;
     }
 
diff --git a/include/hw/ide/internal.h b/include/hw/ide/internal.h
index 2d09162eeb..79172217cc 100644
--- a/include/hw/ide/internal.h
+++ b/include/hw/ide/internal.h
@@ -624,7 +624,7 @@ int ide_init_drive(IDEState *s, BlockBackend *blk, IDEDriveKind kind,
                    int chs_trans, Error **errp);
 void ide_init2(IDEBus *bus, qemu_irq irq);
 void ide_exit(IDEState *s);
-void ide_init_ioport(IDEBus *bus, ISADevice *isa, int iobase, int iobase2);
+int ide_init_ioport(IDEBus *bus, ISADevice *isa, int iobase, int iobase2);
 void ide_register_restart_cb(IDEBus *bus);
 
 void ide_exec_cmd(IDEBus *bus, uint32_t val);
diff --git a/include/hw/isa/isa.h b/include/hw/isa/isa.h
index ddaae89a85..d4417b34b6 100644
--- a/include/hw/isa/isa.h
+++ b/include/hw/isa/isa.h
@@ -132,12 +132,15 @@ void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start);
  * @portio: the ports, sorted by offset.
  * @opaque: passed into the portio callbacks.
  * @name: passed into memory_region_init_io.
+ *
+ * Returns: 0 on success, negative error code otherwise (e.g. if the
+ *          ISA bus is not available)
  */
-void isa_register_portio_list(ISADevice *dev,
-                              PortioList *piolist,
-                              uint16_t start,
-                              const MemoryRegionPortio *portio,
-                              void *opaque, const char *name);
+int isa_register_portio_list(ISADevice *dev,
+                             PortioList *piolist,
+                             uint16_t start,
+                             const MemoryRegionPortio *portio,
+                             void *opaque, const char *name);
 
 static inline ISABus *isa_bus_from_device(ISADevice *d)
 {
diff --git a/tests/docker/dockerfiles/fedora-win64-cross.docker b/tests/docker/dockerfiles/fedora-win64-cross.docker
index ff706040c4..d3f13666e8 100644
--- a/tests/docker/dockerfiles/fedora-win64-cross.docker
+++ b/tests/docker/dockerfiles/fedora-win64-cross.docker
@@ -13,6 +13,7 @@ ENV PACKAGES \
     hostname \
     make \
     meson \
+    mingw32-nsis \
     mingw64-bzip2 \
     mingw64-curl \
     mingw64-glib2 \