* [patch] PCI: acpiphp_ibm: potential uninitialized variable bug
@ 2016-04-15 14:51 Dan Carpenter
2016-04-15 15:34 ` Bjorn Helgaas
0 siblings, 1 reply; 2+ messages in thread
From: Dan Carpenter @ 2016-04-15 14:51 UTC (permalink / raw)
To: Rafael J. Wysocki
Cc: Len Brown, Bjorn Helgaas, linux-acpi, linux-pci, linux-kernel,
kernel-janitors
If ibm_get_table_from_acpi() fails then "table" isn't initialized. I
fixed this by adding a check for failure.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c
index 2f6d3a1..f6221d7 100644
--- a/drivers/pci/hotplug/acpiphp_ibm.c
+++ b/drivers/pci/hotplug/acpiphp_ibm.c
@@ -138,6 +138,8 @@ static union apci_descriptor *ibm_slot_from_id(int id)
char *table;
size = ibm_get_table_from_acpi(&table);
+ if (size < 0)
+ return NULL;
des = (union apci_descriptor *)table;
if (memcmp(des->header.sig, "aPCI", 4) != 0)
goto ibm_slot_done;
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [patch] PCI: acpiphp_ibm: potential uninitialized variable bug
2016-04-15 14:51 [patch] PCI: acpiphp_ibm: potential uninitialized variable bug Dan Carpenter
@ 2016-04-15 15:34 ` Bjorn Helgaas
0 siblings, 0 replies; 2+ messages in thread
From: Bjorn Helgaas @ 2016-04-15 15:34 UTC (permalink / raw)
To: Dan Carpenter
Cc: Rafael J. Wysocki, Len Brown, Bjorn Helgaas, linux-acpi,
linux-pci, linux-kernel, kernel-janitors
On Fri, Apr 15, 2016 at 05:51:06PM +0300, Dan Carpenter wrote:
> If ibm_get_table_from_acpi() fails then "table" isn't initialized. I
> fixed this by adding a check for failure.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Applied to pci/hotplug for v4.7, thanks, Dan!
> diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c
> index 2f6d3a1..f6221d7 100644
> --- a/drivers/pci/hotplug/acpiphp_ibm.c
> +++ b/drivers/pci/hotplug/acpiphp_ibm.c
> @@ -138,6 +138,8 @@ static union apci_descriptor *ibm_slot_from_id(int id)
> char *table;
>
> size = ibm_get_table_from_acpi(&table);
> + if (size < 0)
> + return NULL;
> des = (union apci_descriptor *)table;
> if (memcmp(des->header.sig, "aPCI", 4) != 0)
> goto ibm_slot_done;
> --
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