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hw/pci-host: pnv_phb{3, 4}: Fix heap out-of-bound access failure

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pnv_phb3_root_bus_info and pnv_phb4_root_bus_info are missing the
instance_size initialization. This results in accessing out-of-bound
memory when setting 'chip-id' and 'phb-id', and eventually crashes
glib's malloc functionality with the following message:

  "qemu-system-ppc64: GLib: ../glib-2.72.3/glib/gmem.c:131: failed to allocate 3232 bytes"

This issue was noticed only when running qtests with QEMU Windows
32-bit executable. Windows 64-bit, Linux 32/64-bit do not expose
this bug though.

Fixes: 9ae1329ee2 ("ppc/pnv: Add models for POWER8 PHB3 PCIe Host bridge")
Fixes: 4f9924c4d4 ("ppc/pnv: Add models for POWER9 PHB4 PCIe Host bridge")
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Xuzhou Cheng <xuzhou.cheng@windriver.com>
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Message-Id: <20220920103159.1865256-29-bmeng.cn@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This commit is contained in:
Xuzhou Cheng 2022-09-20 18:31:48 +08:00 committed by Daniel Henrique Barboza
parent cb5b5ab9a5
commit 90865af7d9
2 changed files with 2 additions and 0 deletions
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1
hw/pci-host/pnv_phb3.c
View file

@ -1169,6 +1169,7 @@ static void pnv_phb3_root_bus_class_init(ObjectClass *klass, void *data)
static const TypeInfo pnv_phb3_root_bus_info = {
.name = TYPE_PNV_PHB3_ROOT_BUS,
.parent = TYPE_PCIE_BUS,
.instance_size = sizeof(PnvPHB3RootBus),
.class_init = pnv_phb3_root_bus_class_init,
};

1
hw/pci-host/pnv_phb4.c
View file

@ -1773,6 +1773,7 @@ static void pnv_phb4_root_bus_class_init(ObjectClass *klass, void *data)
static const TypeInfo pnv_phb4_root_bus_info = {
.name = TYPE_PNV_PHB4_ROOT_BUS,
.parent = TYPE_PCIE_BUS,
.instance_size = sizeof(PnvPHB4RootBus),
.class_init = pnv_phb4_root_bus_class_init,
};