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Fix crash when registering/unregistering callbacks concurrently under free-threaded Python - #3308

Merged

lijinf2 merged 2 commits into

NVIDIA:mainfrom

lijinf2:jinfengl/fix-callback-map-race

Nov 2, 2026

Merged

Fix crash when registering/unregistering callbacks concurrently under free-threaded Python#3308
lijinf2 merged 2 commits into
NVIDIA:mainfrom
lijinf2:jinfengl/fix-callback-map-race

Commits on Oct 30, 2026
- Lock the callback bookkeeping map in cuda.bindings
  lijinf2
  committed
  8e3dd5b
- add a test case to increase probability triggering contention
  lijinf2
  committed
  1ceee45