memsan: enable kyber in bench

src/kem/kyber/kyber512/avx2/indcpa.c

@@ -289,7 +289,7 @@ void PQCLEAN_KYBER512_AVX2_indcpa_enc(uint8_t c[KYBER_INDCPA_BYTES],
                                       const uint8_t coins[KYBER_SYMBYTES]) {
     unsigned int i;
     uint8_t seed[KYBER_SYMBYTES];
-    polyvec sp, pkpv, ep, at[KYBER_K], b;
+    polyvec sp, pkpv, ep, at[KYBER_K], b = {0};
     poly v, k, epp;
 
     unpack_pk(&pkpv, seed, pk);

src/kem/kyber/kyber512/avx2/kem.c

@@ -51,9 +51,9 @@ int PQCLEAN_KYBER512_AVX2_crypto_kem_keypair(unsigned char pk[KYBER_PUBLICKEYBYT
 int PQCLEAN_KYBER512_AVX2_crypto_kem_enc(unsigned char ct[KYBER_CIPHERTEXTBYTES],
         unsigned char ss[KYBER_SSBYTES],
         const unsigned char pk[KYBER_PUBLICKEYBYTES]) {
-    uint8_t buf[2 * KYBER_SYMBYTES];
+    uint8_t buf[2 * KYBER_SYMBYTES] = {0};
     /* Will contain key, coins */
-    uint8_t kr[2 * KYBER_SYMBYTES];
+    uint8_t kr[2 * KYBER_SYMBYTES] = {0};
 
     randombytes(buf, KYBER_SYMBYTES);
     /* Don't release system RNG output */

src/kem/kyber/kyber512/avx2/polyvec.c

@@ -182,7 +182,7 @@ void PQCLEAN_KYBER512_AVX2_polyvec_invntt_tomont(polyvec *r) {
 **************************************************/
 void PQCLEAN_KYBER512_AVX2_polyvec_basemul_acc_montgomery(poly *r, const polyvec *a, const polyvec *b) {
     size_t i;
-    poly tmp;
+    poly tmp = {0};
 
     PQCLEAN_KYBER512_AVX2_poly_basemul_montgomery(r, &a->vec[0], &b->vec[0]);
     for (i = 1; i < KYBER_K; i++) {

test/bench/kyber.cc

@@ -59,7 +59,6 @@ static void BenchKyberKeygen(benchmark::State &st) {
     cpucycle(st, total);
 }
 
-#ifndef PQC_MEMSAN_BUILD
 static void BenchKyberEncaps(benchmark::State &st) {
     int64_t t, total = 0;
     uint8_t sk[1632];
@@ -92,7 +91,6 @@ static void BenchKyberDecaps(benchmark::State &st) {
     }
     cpucycle(st, total);
 }
-#endif
 
 static void BenchKyberBaseMulAVX(benchmark::State &st) {
     int64_t t, total = 0;
@@ -126,7 +124,5 @@ BENCHMARK(BenchKyberBaseMulAVX);
 BENCHMARK(BenchKyberNttAVX);
 
 // TODO: not sure why but memcheck fails in INDCPA encryption
-#ifndef PQC_MEMSAN_BUILD
 BENCHMARK(BenchKyberEncaps);
 BENCHMARK(BenchKyberDecaps);
-#endif