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[BUG][Fuzzer][wrong-code] T.gemm with both operands in local.fragment (RR variant) silently ignores clear_accum=True on sm_80/86/89 → stale accumulator, wrong result

bugSomething isn't workingSomething isn't working

Status: Open.

#2617 In tile-ai/tilelang;

· Hughshine opened on Jul 11, 2026

[BUG][Fuzzer][wrong-code] DecoupleTypeCast silently clobbers vector lanes the source left unwritten when a cast-store sits under a nested-if (or if/else) guard

bugSomething isn't workingSomething isn't working

Status: Open.

#2616 In tile-ai/tilelang;

· Hughshine opened on Jul 11, 2026

[BUG][Fuzzer][ice-on-valid] Exported MXFP4 dequant _tir_u8_to_f4_to_bf16 crashes at trace time on a Python min() over symbolic PrimExpr operands (min should be T.min)

bugSomething isn't workingSomething isn't working

Status: Open.

#2615 In tile-ai/tilelang;

· Hughshine opened on Jul 11, 2026

[BUG][Fuzzer][wrong-code] T.pow(x, y) with a constant integer y <= 0 silently returns x instead of x**y

bugSomething isn't workingSomething isn't working

Status: Open.

#2614 In tile-ai/tilelang;

· Hughshine opened on Jul 11, 2026

[BUG][Fuzzer][wrong-code] Un-pipelined warp-specialized GEMM sharing one shared operand between both warp groups silently races on Hopper — missing loop-back __syncthreads() (pipelined num_stages>=2 is unaffected)

bugSomething isn't workingSomething isn't working

Status: Open.

#2613 In tile-ai/tilelang;

· Hughshine opened on Jul 11, 2026

[BUG][Fuzzer][wrong-code] tl.ThreadSync silently drops an in-loop __syncthreads() inside a threadIdx-dependent if, racing to a wrong result

bugSomething isn't workingSomething isn't working

Status: Open.

#2612 In tile-ai/tilelang;

· Hughshine opened on Jul 11, 2026

[BUG][Fuzzer][ice-on-valid-code] Scalar T.cast for two dtype pairs that IsCudaVectorizableCast declares supported (float8_e8m0fnu -> bfloat16, float64 -> float4_e2m1fn) leaks an nvcc error while the vectorized form compiles

bugSomething isn't workingSomething isn't working

Status: Open.

#2610 In tile-ai/tilelang;

· Hughshine opened on Jul 11, 2026

[BUG][Fuzzer][wrong-code] A cross-dtype T.view of a shared buffer that carries a swizzle (or any non-identity) layout silently reads/writes the wrong storage slots

bugSomething isn't workingSomething isn't working

Status: Open.

#2609 In tile-ai/tilelang;

· Hughshine opened on Jul 11, 2026

[BUG][Fuzzer][wrong-code] a break/T.loop_break() inside T.vectorized is silently dropped instead of exiting or being rejected

bugSomething isn't workingSomething isn't working

Status: Open.

#2608 In tile-ai/tilelang;

· Hughshine opened on Jul 11, 2026

[BUG][Fuzzer][accepts-invalid] T.any_sync & the warp-vote/block-sync family silently truncate a float predicate to int (no error)

bugSomething isn't workingSomething isn't working

Status: Open.

#2607 In tile-ai/tilelang;

· Hughshine opened on Jul 11, 2026

[BUG][Fuzzer][wrong-code] make_cutlass_metadata_layout (sm8x) silently emits a non-bijective, out-of-range E-metadata layout when M is not a multiple of the interleave group

bugSomething isn't workingSomething isn't working

Status: Open.

#2606 In tile-ai/tilelang;

· Hughshine opened on Jul 10, 2026

[BUG][Fuzzer][wrong-code] Sparse T.gemm_sp with a K not a multiple of the sparse MMA K-atom silently drops the K-tail instead of computing it or rejecting

bugSomething isn't workingSomething isn't working

Status: Open.

#2605 In tile-ai/tilelang;

· Hughshine opened on Jul 10, 2026