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[BIG tensor] add invalid shape check for preventing implicit overflow #74369

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Merged
merged 2 commits into from
Aug 4, 2025
Merged

[BIG tensor] add invalid shape check for preventing implicit overflow #74369

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[BIG tensor] add shape check for preventing implicit overflow
hxzd5568 Aug 1, 2025
593d2c3
[BIG tensor] add shape check for preventing implicit overflow
hxzd5568 Aug 1, 2025
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8 changes: 8 additions & 0 deletions paddle/phi/kernels/gpu/cross_entropy_kernel.cu
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Original file line number Diff line number Diff line change
Expand Up @@ -1395,6 +1395,14 @@ void CrossEntropyWithSoftmaxKernel(const Context& dev_ctx,
int axis,
DenseTensor* softmax,
DenseTensor* loss) {
const int rank = logits.dims().size();
const int64_t axis_v = phi::funcs::CanonicalAxis(axis, rank);
const int64_t d = phi::funcs::SizeFromAxis<int64_t>(axis_v, logits.dims());
PADDLE_ENFORCE_LE(d,
std::numeric_limits<int>::max(),
common::errors::InvalidArgument(
"(PreconditionNotMet) The num of"
" the classes should be <= INT_MAX(2147483647)"));
if (softmax->numel() == 0) {
// When soft_label is False, the axis column cannot be 0. Other dimensions
// are the same, so the numel of softmax and loss are both 0.
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