From: Cyrill Gorcunov <gorcunov@xxxxxxxxx>
The early_param handling function could recieve NULL pointer as argument
in case if user didn't enter parameter value. So we have to be ready for
a such situation and do check for NULL pointer if needed.
Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/acpi/tables.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN drivers/acpi/tables.c~acpi-add-checking-for-null-early-param drivers/acpi/tables.c
--- a/drivers/acpi/tables.c~acpi-add-checking-for-null-early-param
+++ a/drivers/acpi/tables.c
@@ -300,6 +300,8 @@ int __init acpi_table_init(void)
static int __init acpi_parse_apic_instance(char *str)
{
+ if (!str)
+ return -EINVAL;
acpi_apic_instance = simple_strtoul(str, NULL, 0);
_
--
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