Update vllm to point to flash-attention commit that builds FA3 with torch stable API. (Retry) (#49599)

Signed-off-by: Chris Leonard <chleonar@redhat.com> Signed-off-by: Shengqi Chen <harry-chen@outlook.com> Co-authored-by: Shengqi Chen <harry-chen@outlook.com>

Chris Leonard committed Aug 6, 2026 at 11:37 UTC 41e7746b82b43dd3454cd842d1bcfc30665eddb2
2 files changed +2 -5
.buildkite/check-torch-abi.py
+1 -4
@@ -12,10 +12,7 @@ from torch_abi_audit.report import ExtensionReport, PackageReport
12
13 # Temporary allowlist of extensions not yet on the stable ABI.
14 # Shrink and remove over time.
15 -ALLOWED_UNSTABLE_LIBRARIES: tuple[str, ...] = (
16 - "vllm_flash_attn/_vllm_fa3_C.abi3.so",
17 - "third_party/deep_gemm/_C*.so",
18 -)
15 +ALLOWED_UNSTABLE_LIBRARIES: tuple[str, ...] = ("third_party/deep_gemm/_C*.so",)
16
17
18 def _relative_path(lib: ExtensionReport, package_root: Path) -> str:
cmake/external_projects/vllm_flash_attn.cmake
+1 -1
@@ -39,7 +39,7 @@ else()
39 FetchContent_Declare(
40 vllm-flash-attn
41 GIT_REPOSITORY https://github.com/vllm-project/flash-attention.git
42 - GIT_TAG 28e862d21806bc3580207aa0ad4e2759151e9827
42 + GIT_TAG f3e1a4f74c99145c0717709860bf765de1703779
43 GIT_PROGRESS TRUE
44 # Don't share the vllm-flash-attn build between build types
45 BINARY_DIR ${CMAKE_BINARY_DIR}/vllm-flash-attn