[GIT pull] EFI fix for 4.16

[Thomas Gleixner]

Linus,

please pull the latest efi-urgent-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 
efi-urgent-for-linus

A single fix to prevent partially initialized pointers in mixed mode (64bit
kernel on 32bit UEFI).

Thanks,

        tglx

------------------>
Ard Biesheuvel (1):
      efi/libstub/tpm: Initialize pointer variables to zero for mixed mode


 drivers/firmware/efi/libstub/tpm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/firmware/efi/libstub/tpm.c 
b/drivers/firmware/efi/libstub/tpm.c
index da661bf8cb96..13c1edd37e96 100644
--- a/drivers/firmware/efi/libstub/tpm.c
+++ b/drivers/firmware/efi/libstub/tpm.c
@@ -68,11 +68,11 @@ void efi_retrieve_tpm2_eventlog_1_2(efi_system_table_t 
*sys_table_arg)
        efi_guid_t linux_eventlog_guid = LINUX_EFI_TPM_EVENT_LOG_GUID;
        efi_status_t status;
        efi_physical_addr_t log_location, log_last_entry;
-       struct linux_efi_tpm_eventlog *log_tbl;
+       struct linux_efi_tpm_eventlog *log_tbl = NULL;
        unsigned long first_entry_addr, last_entry_addr;
        size_t log_size, last_entry_size;
        efi_bool_t truncated;
-       void *tcg2_protocol;
+       void *tcg2_protocol = NULL;
 
        status = efi_call_early(locate_protocol, &tcg2_guid, NULL,
                                &tcg2_protocol);