diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/namespace/nsnames.c | 8 | ||||
| -rw-r--r-- | drivers/acpi/utilities/utalloc.c | 4 |
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/acpi/namespace/nsnames.c b/drivers/acpi/namespace/nsnames.c index cffef1bcbdb..549db42f16c 100644 --- a/drivers/acpi/namespace/nsnames.c +++ b/drivers/acpi/namespace/nsnames.c @@ -137,6 +137,10 @@ char *acpi_ns_get_external_pathname(struct acpi_namespace_node *node) /* Calculate required buffer size based on depth below root */ size = acpi_ns_get_pathname_length(node); + if (!size) { + ACPI_ERROR((AE_INFO, "Invalid node failure")); + return_PTR(NULL); + } /* Allocate a buffer to be returned to caller */ @@ -229,6 +233,10 @@ acpi_ns_handle_to_pathname(acpi_handle target_handle, /* Determine size required for the caller buffer */ required_size = acpi_ns_get_pathname_length(node); + if (!required_size) { + ACPI_ERROR((AE_INFO, "Invalid node failure")); + return_ACPI_STATUS(AE_ERROR); + } /* Validate/Allocate/Clear caller buffer */ diff --git a/drivers/acpi/utilities/utalloc.c b/drivers/acpi/utilities/utalloc.c index 3dfb8a442b2..e7bf34a7b1d 100644 --- a/drivers/acpi/utilities/utalloc.c +++ b/drivers/acpi/utilities/utalloc.c @@ -242,6 +242,10 @@ acpi_ut_initialize_buffer(struct acpi_buffer * buffer, { acpi_status status = AE_OK; + if (!required_length) { + WARN_ON(1); + return AE_ERROR; + } switch (buffer->length) { case ACPI_NO_BUFFER: |