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[PATCH 11/21] hw/ipmi: Fix latent realize() error handling bugs
From: |
Markus Armbruster |
Subject: |
[PATCH 11/21] hw/ipmi: Fix latent realize() error handling bugs |
Date: |
Sat, 30 Nov 2019 20:42:30 +0100 |
isa_ipmi_bt_realize(), ipmi_isa_realize(), pci_ipmi_bt_realize(), and
pci_ipmi_kcs_realize() crash when IPMIInterfaceClass method init()
fails and their @errp argument is null. First messed up in commit
0719029c47 "ipmi: Add an ISA KCS low-level interface", then imitated
in commit a9b74079cb "ipmi: Add a BT low-level interface" and commit
12f983c6aa "ipmi: Add PCI IPMI interfaces".
The bug can't bite as no caller actually passes null, and none of the
init() methods can actually fail. Fix it anyway.
Cc: Corey Minyard <address@hidden>
Signed-off-by: Markus Armbruster <address@hidden>
---
hw/ipmi/isa_ipmi_bt.c | 7 +++++--
hw/ipmi/isa_ipmi_kcs.c | 7 +++++--
hw/ipmi/pci_ipmi_bt.c | 6 ++++--
hw/ipmi/pci_ipmi_kcs.c | 6 ++++--
4 files changed, 18 insertions(+), 8 deletions(-)
diff --git a/hw/ipmi/isa_ipmi_bt.c b/hw/ipmi/isa_ipmi_bt.c
index 9a87ffd3f0..9fba5ed383 100644
--- a/hw/ipmi/isa_ipmi_bt.c
+++ b/hw/ipmi/isa_ipmi_bt.c
@@ -70,6 +70,7 @@ static void isa_ipmi_bt_lower_irq(IPMIBT *ib)
static void isa_ipmi_bt_realize(DeviceState *dev, Error **errp)
{
+ Error *err = NULL;
ISADevice *isadev = ISA_DEVICE(dev);
ISAIPMIBTDevice *iib = ISA_IPMI_BT(dev);
IPMIInterface *ii = IPMI_INTERFACE(dev);
@@ -85,9 +86,11 @@ static void isa_ipmi_bt_realize(DeviceState *dev, Error
**errp)
iib->bt.bmc->intf = ii;
iib->bt.opaque = iib;
- iic->init(ii, 0, errp);
- if (*errp)
+ iic->init(ii, 0, &err);
+ if (err) {
+ error_propagate(errp, err);
return;
+ }
if (iib->isairq > 0) {
isa_init_irq(isadev, &iib->irq, iib->isairq);
diff --git a/hw/ipmi/isa_ipmi_kcs.c b/hw/ipmi/isa_ipmi_kcs.c
index ca3ea36a3f..cc6bd817f2 100644
--- a/hw/ipmi/isa_ipmi_kcs.c
+++ b/hw/ipmi/isa_ipmi_kcs.c
@@ -69,6 +69,7 @@ static void isa_ipmi_kcs_lower_irq(IPMIKCS *ik)
static void ipmi_isa_realize(DeviceState *dev, Error **errp)
{
+ Error *err = NULL;
ISADevice *isadev = ISA_DEVICE(dev);
ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(dev);
IPMIInterface *ii = IPMI_INTERFACE(dev);
@@ -84,9 +85,11 @@ static void ipmi_isa_realize(DeviceState *dev, Error **errp)
iik->kcs.bmc->intf = ii;
iik->kcs.opaque = iik;
- iic->init(ii, 0, errp);
- if (*errp)
+ iic->init(ii, 0, &err);
+ if (err) {
+ error_propagate(errp, err);
return;
+ }
if (iik->isairq > 0) {
isa_init_irq(isadev, &iik->irq, iik->isairq);
diff --git a/hw/ipmi/pci_ipmi_bt.c b/hw/ipmi/pci_ipmi_bt.c
index 6ed925a665..ba9cf016b5 100644
--- a/hw/ipmi/pci_ipmi_bt.c
+++ b/hw/ipmi/pci_ipmi_bt.c
@@ -54,6 +54,7 @@ static void pci_ipmi_lower_irq(IPMIBT *ik)
static void pci_ipmi_bt_realize(PCIDevice *pd, Error **errp)
{
+ Error *err = NULL;
PCIIPMIBTDevice *pik = PCI_IPMI_BT(pd);
IPMIInterface *ii = IPMI_INTERFACE(pd);
IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
@@ -74,8 +75,9 @@ static void pci_ipmi_bt_realize(PCIDevice *pd, Error **errp)
pik->bt.raise_irq = pci_ipmi_raise_irq;
pik->bt.lower_irq = pci_ipmi_lower_irq;
- iic->init(ii, 8, errp);
- if (*errp) {
+ iic->init(ii, 8, &err);
+ if (err) {
+ error_propagate(errp, err);
return;
}
pci_register_bar(pd, 0, PCI_BASE_ADDRESS_SPACE_IO, &pik->bt.io);
diff --git a/hw/ipmi/pci_ipmi_kcs.c b/hw/ipmi/pci_ipmi_kcs.c
index eeba63baa4..99f46152f4 100644
--- a/hw/ipmi/pci_ipmi_kcs.c
+++ b/hw/ipmi/pci_ipmi_kcs.c
@@ -54,6 +54,7 @@ static void pci_ipmi_lower_irq(IPMIKCS *ik)
static void pci_ipmi_kcs_realize(PCIDevice *pd, Error **errp)
{
+ Error *err = NULL;
PCIIPMIKCSDevice *pik = PCI_IPMI_KCS(pd);
IPMIInterface *ii = IPMI_INTERFACE(pd);
IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
@@ -74,8 +75,9 @@ static void pci_ipmi_kcs_realize(PCIDevice *pd, Error **errp)
pik->kcs.raise_irq = pci_ipmi_raise_irq;
pik->kcs.lower_irq = pci_ipmi_lower_irq;
- iic->init(ii, 8, errp);
- if (*errp) {
+ iic->init(ii, 8, &err);
+ if (err) {
+ error_propagate(errp, err);
return;
}
pci_register_bar(pd, 0, PCI_BASE_ADDRESS_SPACE_IO, &pik->kcs.io);
--
2.21.0
- [PATCH 08/21] exec: Fix latent file_ram_alloc() error handling bug, (continued)
- [PATCH 08/21] exec: Fix latent file_ram_alloc() error handling bug, Markus Armbruster, 2019/11/30
- [PATCH 06/21] io: Fix Error usage in a comment <example>, Markus Armbruster, 2019/11/30
- [PATCH 16/21] s390/cpu_modules: Fix latent realize() error handling bugs, Markus Armbruster, 2019/11/30
- [PATCH 14/21] s390x/event-facility: Fix latent realize() error handling bug, Markus Armbruster, 2019/11/30
- [PATCH 10/21] hw/core: Fix latent fit_load_fdt() error handling bug, Markus Armbruster, 2019/11/30
- [PATCH 07/21] tests: Clean up initialization of Error *err variables, Markus Armbruster, 2019/11/30
- [PATCH 15/21] s390x/cpu_models: Fix latent feature property error handling bugs, Markus Armbruster, 2019/11/30
- [PATCH 13/21] memory-device: Fix latent memory pre-plug error handling bugs, Markus Armbruster, 2019/11/30
- [PATCH 12/21] qga: Fix latent guest-get-fsinfo error handling bug, Markus Armbruster, 2019/11/30
- [PATCH 18/21] s390x: Fix latent query-cpu-definitions error handling bug, Markus Armbruster, 2019/11/30
- [PATCH 11/21] hw/ipmi: Fix latent realize() error handling bugs,
Markus Armbruster <=
- [PATCH 09/21] hw/acpi: Fix latent legacy CPU plug error handling bug, Markus Armbruster, 2019/11/30
- [PATCH 21/21] tests-blockjob: Use error_free_or_abort(), Markus Armbruster, 2019/11/30
- [PATCH 20/21] hw/intc/s390: Simplify error handling in kvm_s390_flic_realize(), Markus Armbruster, 2019/11/30
- [PATCH 17/21] s390x: Fix latent query-cpu-model-FOO error handling bugs, Markus Armbruster, 2019/11/30