tpm/tpm_ppi: Check return value of acpi_get_name
If status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer); fails for whatever reason and does not return AE_OK if (strstr(buffer.pointer, context) != NULL) { does dereference a null pointer. -> Check the return value and return the status to the caller Found by coverity Cc: stable@vger.kernel.org Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
This commit is contained in:
parent
747d35bd9b
commit
238b1eaa59
|
@ -30,6 +30,9 @@ static acpi_status ppi_callback(acpi_handle handle, u32 level, void *context,
|
|||
acpi_status status;
|
||||
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
|
||||
status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
|
||||
if (ACPI_FAILURE(status))
|
||||
return status;
|
||||
|
||||
if (strstr(buffer.pointer, context) != NULL) {
|
||||
*return_value = handle;
|
||||
kfree(buffer.pointer);
|
||||
|
|
Loading…
Reference in a new issue