whisper.cpp/ggml
muggle-stack 328263f8fd ggml : fix SpaceMit IME array out-of-bounds in task assignment (llama/16629)
Fix incorrect task-to-batch index calculation in the quantization phase.

The bug caused out-of-bounds access to qnbitgemm_args array when
compute_idx exceeded per_gemm_block_count_m, leading to invalid
pointer dereferences and SIGBUS errors.

Correctly map tasks to batches by dividing compute_idx by
per_gemm_block_count_m instead of block_size_m.

Example:
  batch_feature=1, gemm_m=30, block_size_m=4
  per_gemm_block_count_m = 8, task_count = 8

  Old: gemm_idx = 4/4 = 1 (out of bounds  New: gemm_idx = 4/8 = 0 (correct)

Tested on SpaceMit K1 RISC-V64 with qwen2.5:0.5b model.

Co-authored-by: muggle <mingjun.rong@spacemit.com>
2025-10-22 12:58:11 +03:00
..
cmake ggml: Skip backend library linking code when GGML_BACKEND_DL=ON (llama/15094) 2025-08-18 20:30:45 +03:00
include cpu : add FLOOR, CEIL, ROUND and TRUNC unary operators (llama/16083) 2025-10-22 12:58:11 +03:00
src ggml : fix SpaceMit IME array out-of-bounds in task assignment (llama/16629) 2025-10-22 12:58:11 +03:00
.gitignore whisper : reorganize source code + improve CMake (#2256) 2024-06-26 19:34:09 +03:00
CMakeLists.txt ggml webgpu: profiling, CI updates, reworking of command submission (llama/16452) 2025-10-12 11:16:23 +03:00