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Fix: Potential out-of-bounds read in non-transposed [SD]GEMV kernels for A64FX and Neoverse V1. #5240

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Merged
merged 1 commit into from
Apr 22, 2025
Merged

Fix: Potential out-of-bounds read in non-transposed [SD]GEMV kernels for A64FX and Neoverse V1. #5240

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6 changes: 3 additions & 3 deletions kernel/arm64/gemv_n_sve_v1x3.c
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Original file line number Diff line number Diff line change
Expand Up @@ -77,9 +77,9 @@ int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha, FLOAT *a,
svbool_t pg01 = ((j + width * 1) < n) ? SV_TRUE() : svpfalse();
svbool_t pg02 = ((j + width * 2) < n) ? SV_TRUE() : svpfalse();

SV_TYPE temp0_vec = SV_DUP(alpha * x0_ptr[ix]);
SV_TYPE temp1_vec = SV_DUP(alpha * x1_ptr[ix]);
SV_TYPE temp2_vec = SV_DUP(alpha * x2_ptr[ix]);
SV_TYPE temp0_vec = ((j + width * 0) < n) ? SV_DUP(alpha * x0_ptr[ix]) : SV_DUP(0.0);
SV_TYPE temp1_vec = ((j + width * 1) < n) ? SV_DUP(alpha * x1_ptr[ix]) : SV_DUP(0.0);
SV_TYPE temp2_vec = ((j + width * 2) < n) ? SV_DUP(alpha * x2_ptr[ix]) : SV_DUP(0.0);
i = 0;
BLASLONG sve_size = SV_COUNT();
while ((i + sve_size * 1 - 1) < m) {
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6 changes: 3 additions & 3 deletions kernel/arm64/gemv_n_sve_v4x3.c
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Original file line number Diff line number Diff line change
Expand Up @@ -86,9 +86,9 @@ int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha, FLOAT *a,
svbool_t pg22 = ((j + width * 2) < n) ? SV_TRUE() : svpfalse();
svbool_t pg32 = ((j + width * 2) < n) ? SV_TRUE() : svpfalse();

SV_TYPE temp0_vec = SV_DUP(alpha * x0_ptr[ix]);
SV_TYPE temp1_vec = SV_DUP(alpha * x1_ptr[ix]);
SV_TYPE temp2_vec = SV_DUP(alpha * x2_ptr[ix]);
SV_TYPE temp0_vec = ((j + width * 0) < n) ? SV_DUP(alpha * x0_ptr[ix]) : SV_DUP(0.0);
SV_TYPE temp1_vec = ((j + width * 1) < n) ? SV_DUP(alpha * x1_ptr[ix]) : SV_DUP(0.0);
SV_TYPE temp2_vec = ((j + width * 2) < n) ? SV_DUP(alpha * x2_ptr[ix]) : SV_DUP(0.0);
i = 0;
BLASLONG sve_size = SV_COUNT();
while ((i + sve_size * 4 - 1) < m) {
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