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tpm12: Initialize a few variables for x86 gcc -O3

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gcc (Ubuntu 5.4.0-6ubuntu1~16.04.12) 5.4.0 20160609

The above gcc on x86 with -O3 reports the following false positives:

 gcc -DHAVE_CONFIG_H -I. -I.. -include tpm_library_conf.h -I../include/libtpms -I../include/libtpms -fstack-protector-strong -DTPM_V12 -DTPM_PCCLIENT -DTPM_VOLATILE_LOAD -DTPM_ENABLE_ACTIVATE -DTPM_AES -DTPM_LIBTPMS_CALLBACKS -DTPM_NV_DISK -DTPM_POSIX -DTPM_NOMAINTENANCE_COMMANDS -O3 -DUSE_OPENSSL_FUNCTIONS_SYMMETRIC=1 -DUSE_OPENSSL_FUNCTIONS_EC=1 -DUSE_OPENSSL_FUNCTIONS_ECDSA=0 -DUSE_OPENSSL_FUNCTIONS_RSA=0 -Wall -Werror -Wreturn-type -Wsign-compare -Wno-self-assign -MT tpm12/libtpms_tpm12_la-tpm_nvram.lo -MD -MP -MF tpm12/.deps/libtpms_tpm12_la-tpm_nvram.Tpo -c tpm12/tpm_nvram.c -o tpm12/libtpms_tpm12_la-tpm_nvram.o
tpm12/tpm_nvram.c: In function ‘TPM_Process_NVReadValue’:
tpm12/tpm_nvram.c:1539:38: error: ‘isGPIO’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
      if ((returnCode == TPM_SUCCESS) && !isGPIO) {
                                      ^
tpm12/tpm_nvram.c: In function ‘TPM_Process_NVWriteValue’:
tpm12/tpm_nvram.c:2323:6: error: ‘isGPIO’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
   if (!isGPIO) {
      ^

gcc -DHAVE_CONFIG_H -I. -I.. -include tpm_library_conf.h -I../include/libtpms -I../include/libtpms -fstack-protector-strong -DTPM_V12 -DTPM_PCCLIENT -DTPM_VOLATILE_LOAD -DTPM_ENABLE_ACTIVATE -DTPM_AES -DTPM_LIBTPMS_CALLBACKS -DTPM_NV_DISK -DTPM_POSIX -DTPM_NOMAINTENANCE_COMMANDS -O3 -DUSE_OPENSSL_FUNCTIONS_SYMMETRIC=1 -DUSE_OPENSSL_FUNCTIONS_EC=1 -DUSE_OPENSSL_FUNCTIONS_ECDSA=0 -DUSE_OPENSSL_FUNCTIONS_RSA=0 -Wall -Werror -Wreturn-type -Wsign-compare -Wno-self-assign -MT tpm12/libtpms_tpm12_la-tpm_process.lo -MD -MP -MF tpm12/.deps/libtpms_tpm12_la-tpm_process.Tpo -c tpm12/tpm_process.c -o tpm12/libtpms_tpm12_la-tpm_process.o
tpm12/tpm_process.c: In function ‘TPM_Process_GetCapabilitySigned’:
tpm12/tpm_process.c:5089:19: error: ‘transportEncrypt’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
      returnCode = TPM_ProcessAudit(tpm_state,
                   ^
tpm12/tpm_process.c: In function ‘TPM_Process_SetCapability’:
tpm12/tpm_process.c:5309:19: error: ‘transportEncrypt’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
      returnCode = TPM_ProcessAudit(tpm_state,
                   ^
tpm12/tpm_process.c: At top level:

gcc -DHAVE_CONFIG_H -I. -I.. -include tpm_library_conf.h -I../include/libtpms -I../include/libtpms -fstack-protector-strong -DTPM_V12 -DTPM_PCCLIENT -DTPM_VOLATILE_LOAD -DTPM_ENABLE_ACTIVATE -DTPM_AES -DTPM_LIBTPMS_CALLBACKS -DTPM_NV_DISK -DTPM_POSIX -DTPM_NOMAINTENANCE_COMMANDS -O3 -DUSE_OPENSSL_FUNCTIONS_SYMMETRIC=1 -DUSE_OPENSSL_FUNCTIONS_EC=1 -DUSE_OPENSSL_FUNCTIONS_ECDSA=0 -DUSE_OPENSSL_FUNCTIONS_RSA=0 -Wall -Werror -Wreturn-type -Wsign-compare -Wno-self-assign -MT tpm12/libtpms_tpm12_la-tpm_transport.lo -MD -MP -MF tpm12/.deps/libtpms_tpm12_la-tpm_transport.Tpo -c tpm12/tpm_transport.c -o tpm12/libtpms_tpm12_la-tpm_transport.o
tpm12/tpm_transport.c: In function ‘TPM_Process_ReleaseTransportSigned’:
tpm12/tpm_transport.c:2810:42: error: ‘t1TpmTransportInternal’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  returnCode = TPM_TransportLogOut_Extend(t1TpmTransportInternal->transDigest,
                                          ^

This patch initializes the variables.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
This commit is contained in:
Stefan Berger 2020-01-17 19:01:24 +00:00 committed by Stefan Berger
parent a488a2f970
commit e949d243f7
3 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/tpm12/tpm_nvram.c
View File

@ -1288,7 +1288,7 @@ TPM_RESULT TPM_Process_NVReadValue(tpm_state_t *tpm_state,
TPM_BOOL ignore_auth = FALSE;
TPM_BOOL dir = FALSE;
TPM_BOOL physicalPresence;
TPM_BOOL isGPIO;
TPM_BOOL isGPIO = FALSE;
BYTE *gpioData = NULL;
TPM_NV_DATA_SENSITIVE *d1NvdataSensitive;
uint32_t s1Last;
@ -2000,7 +2000,7 @@ TPM_RESULT TPM_Process_NVWriteValue(tpm_state_t *tpm_state,
TPM_NV_DATA_SENSITIVE *d1NvdataSensitive;
uint32_t s1Last;
TPM_BOOL physicalPresence;
TPM_BOOL isGPIO;
TPM_BOOL isGPIO = FALSE;
uint32_t nv1 = tpm_state->tpm_permanent_data.noOwnerNVWrite;
/* temp for noOwnerNVWrite, initialize to
silence compiler */

4
src/tpm12/tpm_process.c
View File

@ -4844,7 +4844,7 @@ TPM_RESULT TPM_Process_GetCapabilitySigned(tpm_state_t *tpm_state,
unsigned char * inParamEnd; /* ending point of inParam's */
TPM_DIGEST inParamDigest;
TPM_BOOL auditStatus; /* audit the ordinal */
TPM_BOOL transportEncrypt; /* wrapped in encrypted transport session */
TPM_BOOL transportEncrypt = FALSE;/* wrapped in encrypted transport session */
TPM_BOOL authHandleValid = FALSE;
TPM_AUTH_SESSION_DATA *auth_session_data; /* session data for authHandle */
TPM_SECRET *hmacKey;
@ -5144,7 +5144,7 @@ TPM_RESULT TPM_Process_SetCapability(tpm_state_t *tpm_state,
unsigned char * inParamEnd; /* ending point of inParam's */
TPM_DIGEST inParamDigest;
TPM_BOOL auditStatus; /* audit the ordinal */
TPM_BOOL transportEncrypt; /* wrapped in encrypted transport session */
TPM_BOOL transportEncrypt = FALSE;/* wrapped in encrypted transport session */
TPM_BOOL authHandleValid = FALSE;
TPM_AUTH_SESSION_DATA *auth_session_data; /* session data for authHandle */
TPM_SECRET *hmacKey;

2
src/tpm12/tpm_transport.c
View File

@ -2599,7 +2599,7 @@ TPM_RESULT TPM_Process_ReleaseTransportSigned(tpm_state_t *tpm_state,
TPM_BOOL authHandleValid = FALSE;
TPM_BOOL transHandleValid = FALSE;
TPM_AUTH_SESSION_DATA *auth_session_data = NULL; /* session data for authHandle */
TPM_TRANSPORT_INTERNAL *t1TpmTransportInternal;
TPM_TRANSPORT_INTERNAL *t1TpmTransportInternal = NULL;
TPM_SECRET *hmacKey;
TPM_KEY *sigKey = NULL; /* the key specified by keyHandle */
TPM_BOOL parentPCRStatus;