On Tue, Jul 17, 2018 at 04:51:54PM +0200, Thomas Huth wrote:
11;rgb:ffff/ffff/ffff> Valgrind reports an error when introspecting the macio
devices, e.g.:
>
> echo "{'execute':'qmp_capabilities'} {'execute':'device-list-properties'," \
> "'arguments':{'typename':'macio-newworld'}}" \
> "{'execute': 'human-monitor-command', " \
> "'arguments': {'command-line': 'info qtree'}}" | \
> valgrind -q ppc64-softmmu/qemu-system-ppc64 -M none,accel=qtest -qmp stdio
> [...]
> ==30768== Invalid read of size 8
> ==30768== at 0x5BC1EA: qdev_print (qdev-monitor.c:686)
> ==30768== by 0x5BC1EA: qbus_print (qdev-monitor.c:719)
> ==30768== by 0x43E458: handle_hmp_command (monitor.c:3446)
> [...]
>
> Use the new function sysbus_init_child_obj() to initialize the objects
> here, to get the reference counting of the objects right, so that they
> are cleaned up correctly when the parent gets removed.
>
> Signed-off-by: Thomas Huth <th...@redhat.com>
Applied to ppc-for-3.0, thanks.
> ---
> hw/misc/macio/cuda.c | 5 ++---
> hw/misc/macio/macio.c | 24 ++++++++----------------
> hw/misc/macio/pmu.c | 5 ++---
> 3 files changed, 12 insertions(+), 22 deletions(-)
>
> diff --git a/hw/misc/macio/cuda.c b/hw/misc/macio/cuda.c
> index 9651ed9..c4f7a2f 100644
> --- a/hw/misc/macio/cuda.c
> +++ b/hw/misc/macio/cuda.c
> @@ -554,9 +554,8 @@ static void cuda_init(Object *obj)
> CUDAState *s = CUDA(obj);
> SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
>
> - object_initialize(&s->mos6522_cuda, sizeof(s->mos6522_cuda),
> - TYPE_MOS6522_CUDA);
> - qdev_set_parent_bus(DEVICE(&s->mos6522_cuda), sysbus_get_default());
> + sysbus_init_child_obj(obj, "mos6522-cuda", &s->mos6522_cuda,
> + sizeof(s->mos6522_cuda), TYPE_MOS6522_CUDA);
>
> memory_region_init_io(&s->mem, obj, &mos6522_cuda_ops, s, "cuda",
> 0x2000);
> sysbus_init_mmio(sbd, &s->mem);
> diff --git a/hw/misc/macio/macio.c b/hw/misc/macio/macio.c
> index d135e3b..52aa377 100644
> --- a/hw/misc/macio/macio.c
> +++ b/hw/misc/macio/macio.c
> @@ -209,14 +209,11 @@ static void macio_oldworld_realize(PCIDevice *d, Error
> **errp)
> static void macio_init_ide(MacIOState *s, MACIOIDEState *ide, size_t
> ide_size,
> int index)
> {
> - gchar *name;
> + gchar *name = g_strdup_printf("ide[%i]", index);
>
> - object_initialize(ide, ide_size, TYPE_MACIO_IDE);
> - qdev_set_parent_bus(DEVICE(ide), sysbus_get_default());
> + sysbus_init_child_obj(OBJECT(s), name, ide, ide_size, TYPE_MACIO_IDE);
> memory_region_add_subregion(&s->bar, 0x1f000 + ((index + 1) * 0x1000),
> &ide->mem);
> - name = g_strdup_printf("ide[%i]", index);
> - object_property_add_child(OBJECT(s), name, OBJECT(ide), NULL);
> g_free(name);
> }
>
> @@ -232,9 +229,7 @@ static void macio_oldworld_init(Object *obj)
> qdev_prop_allow_set_link_before_realize,
> 0, NULL);
>
> - object_initialize(&s->cuda, sizeof(s->cuda), TYPE_CUDA);
> - qdev_set_parent_bus(DEVICE(&s->cuda), sysbus_get_default());
> - object_property_add_child(obj, "cuda", OBJECT(&s->cuda), NULL);
> + sysbus_init_child_obj(obj, "cuda", &s->cuda, sizeof(s->cuda), TYPE_CUDA);
>
> object_initialize(&os->nvram, sizeof(os->nvram), TYPE_MACIO_NVRAM);
> dev = DEVICE(&os->nvram);
> @@ -390,8 +385,8 @@ static void macio_newworld_init(Object *obj)
> qdev_prop_allow_set_link_before_realize,
> 0, NULL);
>
> - object_initialize(&ns->gpio, sizeof(ns->gpio), TYPE_MACIO_GPIO);
> - qdev_set_parent_bus(DEVICE(&ns->gpio), sysbus_get_default());
> + sysbus_init_child_obj(obj, "gpio", &ns->gpio, sizeof(ns->gpio),
> + TYPE_MACIO_GPIO);
>
> for (i = 0; i < 2; i++) {
> macio_init_ide(s, &ns->ide[i], sizeof(ns->ide[i]), i);
> @@ -404,13 +399,10 @@ static void macio_instance_init(Object *obj)
>
> memory_region_init(&s->bar, obj, "macio", 0x80000);
>
> - object_initialize(&s->dbdma, sizeof(s->dbdma), TYPE_MAC_DBDMA);
> - qdev_set_parent_bus(DEVICE(&s->dbdma), sysbus_get_default());
> - object_property_add_child(obj, "dbdma", OBJECT(&s->dbdma), NULL);
> + sysbus_init_child_obj(obj, "dbdma", &s->dbdma, sizeof(s->dbdma),
> + TYPE_MAC_DBDMA);
>
> - object_initialize(&s->escc, sizeof(s->escc), TYPE_ESCC);
> - qdev_set_parent_bus(DEVICE(&s->escc), sysbus_get_default());
> - object_property_add_child(obj, "escc", OBJECT(&s->escc), NULL);
> + sysbus_init_child_obj(obj, "escc", &s->escc, sizeof(s->escc), TYPE_ESCC);
> }
>
> static const VMStateDescription vmstate_macio_oldworld = {
> diff --git a/hw/misc/macio/pmu.c b/hw/misc/macio/pmu.c
> index e246b0f..d25344f 100644
> --- a/hw/misc/macio/pmu.c
> +++ b/hw/misc/macio/pmu.c
> @@ -770,9 +770,8 @@ static void pmu_init(Object *obj)
> qdev_prop_allow_set_link_before_realize,
> 0, NULL);
>
> - object_initialize(&s->mos6522_pmu, sizeof(s->mos6522_pmu),
> - TYPE_MOS6522_PMU);
> - qdev_set_parent_bus(DEVICE(&s->mos6522_pmu), sysbus_get_default());
> + sysbus_init_child_obj(obj, "mos6522-pmu", &s->mos6522_pmu,
> + sizeof(s->mos6522_pmu), TYPE_MOS6522_PMU);
>
> memory_region_init_io(&s->mem, obj, &mos6522_pmu_ops, s, "via-pmu",
> 0x2000);
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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