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| author | Xuzhou Cheng <xuzhou.cheng@windriver.com> | 2022-09-20 18:31:48 +0800 |
|---|---|---|
| committer | Daniel Henrique Barboza <danielhb413@gmail.com> | 2022-09-20 12:31:53 -0300 |
| commit | 90865af7d901a2aa5eeadfb488f3a9d4aaf70605 (patch) | |
| tree | 1f6bf3678e3a5124633e7305ed464805924b999c | |
| parent | cb5b5ab9a516ce5ecddfc50971bf6f690300fd74 (diff) | |
| download | qemu-90865af7d901a2aa5eeadfb488f3a9d4aaf70605.zip qemu-90865af7d901a2aa5eeadfb488f3a9d4aaf70605.tar.gz qemu-90865af7d901a2aa5eeadfb488f3a9d4aaf70605.tar.bz2 | |
hw/pci-host: pnv_phb{3, 4}: Fix heap out-of-bound access failure
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: 9ae1329ee2fe ("ppc/pnv: Add models for POWER8 PHB3 PCIe Host bridge")
Fixes: 4f9924c4d4cf ("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>
| -rw-r--r-- | hw/pci-host/pnv_phb3.c | 1 | ||||
| -rw-r--r-- | hw/pci-host/pnv_phb4.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/hw/pci-host/pnv_phb3.c b/hw/pci-host/pnv_phb3.c index af8575c..9054c39 100644 --- a/hw/pci-host/pnv_phb3.c +++ b/hw/pci-host/pnv_phb3.c @@ -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, }; diff --git a/hw/pci-host/pnv_phb4.c b/hw/pci-host/pnv_phb4.c index 824e1a7..ccbde84 100644 --- a/hw/pci-host/pnv_phb4.c +++ b/hw/pci-host/pnv_phb4.c @@ -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, }; |