Prevent buffer under/overflow in ULSCH decoding through alignment and sufficient array size

95de67b2 · Sakthivel Velumani · Sakthivel Velumani · f3ea3104 · 95de67b2
Commit 95de67b2 authored Jun 30, 2021 by Sakthivel Velumani Committed by Sakthivel Velumani Jul 13, 2021
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openair1/PHY/NR_TRANSPORT/nr_ulsch_decoding.c openair1/PHY/NR_TRANSPORT/nr_ulsch_decoding.c +2 -2

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--- a/openair1/PHY/NR_TRANSPORT/nr_ulsch_decoding.c
+++ b/openair1/PHY/NR_TRANSPORT/nr_ulsch_decoding.c
@@ -308,8 +308,8 @@ void nr_processULSegment(void* arg) {
  int max_ldpc_iterations = p_decoderParms->numMaxIter;
  int8_t llrProcBuf[OAI_UL_LDPC_MAX_NUM_LLR] __attribute__ ((aligned(32)));

-  int16_t  z [68*384];
-  int8_t   l [68*384];
+  int16_t  z [68*384 + 16] __attribute__ ((aligned(16)));
+  int8_t   l [68*384 + 16] __attribute__ ((aligned(16)));

  __m128i *pv = (__m128i*)&z;
  __m128i *pl = (__m128i*)&l;