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[144.168.56.201]) by smtp.gmail.com with ESMTPSA id n2-20020aa79842000000b00551fa0e2b2dsm699573pfq.206.2022.09.20.03.33.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Sep 2022 03:33:29 -0700 (PDT) From: Bin Meng To: qemu-devel@nongnu.org Cc: Xuzhou Cheng , Bin Meng , =?utf-8?q?C=C3=A9dric_Le_Goater?= , qemu-ppc@nongnu.org Subject: [PATCH v2 28/39] hw/pci-host: pnv_phb{3, 4}: Fix heap out-of-bound access failure Date: Tue, 20 Sep 2022 18:31:48 +0800 Message-Id: <20220920103159.1865256-29-bmeng.cn@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220920103159.1865256-1-bmeng.cn@gmail.com> References: <20220920103159.1865256-1-bmeng.cn@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::531; envelope-from=bmeng.cn@gmail.com; helo=mail-pg1-x531.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Xuzhou Cheng 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") Signed-off-by: Xuzhou Cheng Signed-off-by: Bin Meng Reviewed-by: Cédric Le Goater --- Changes in v2: - new patch: "hw/pci-host: pnv_phb{3,4}: Fix heap out-of-bound access failure" hw/pci-host/pnv_phb3.c | 1 + hw/pci-host/pnv_phb4.c | 1 + 2 files changed, 2 insertions(+) diff --git a/hw/pci-host/pnv_phb3.c b/hw/pci-host/pnv_phb3.c index af8575c007..9054c393a2 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 824e1a73fb..ccbde841fc 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, };