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Fix extra_buffer_lazy guard bypass #31942

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Merged
ispobock merged 1 commit into from
Jul 21, 2026
Merged

Fix extra_buffer_lazy guard bypass #31942

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12 changes: 5 additions & 7 deletions python/sglang/srt/server_args.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4822,14 +4822,12 @@ def _validate_mamba_extra_buffer(self, view, model_arch: str):
"extra_buffer_lazy unsupported under PD disaggregation; use "
"--mamba-radix-cache-strategy extra_buffer."
)
algo = (view.speculative_algorithm or "").upper()
assert algo not in ("DFLASH", "DSPARK"), (
f"extra_buffer_lazy unsupported with {view.speculative_algorithm}; "
"use --mamba-radix-cache-strategy extra_buffer."
)
if view.speculative_num_draft_tokens is not None:
if view.mamba_radix_cache_strategy == "extra_buffer_lazy":
# The dflash family's verify bypasses prepare_mamba_track_for_verify.
assert view.speculative_algorithm not in ("DFLASH", "DSPARK"), (
f"extra_buffer_lazy unsupported with "
f"{view.speculative_algorithm}; use "
"--mamba-radix-cache-strategy extra_buffer."
)
assert view.mamba_track_interval >= view.speculative_num_draft_tokens
if view.page_size is not None:
assert view.mamba_track_interval % view.page_size == 0
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