llvm-project

cebadce0 - [TSan] Release locks before OutputReport on all platforms (#228554)

[TSan] Release locks before OutputReport on all platforms (#228554) https://github.com/llvm/llvm-project/pull/151495 moved OutputReport outside the lock scope (ThreadRegistryLock, slot_lock, slots_lock) on Apple platforms only. Holding these locks during OutputReport can also deadlock on non-Apple platforms. For example, when halt_on_error=1, abort_on_error=1, and handle_abort=0 are set, OutputReport calls Die() -> Abort(), which raises SIGABRT and invokes a user signal handler via CallUserSignalHandler with TSan instrumentation re-enabled. If the signal handler executes enough instrumented code to overflow the active TracePart, TraceSwitchPartImpl -> TracePartAlloc attempts to acquire ctx->slot_mtx and self-deadlocks because slots_lock is still held by ReportRace. Remove the SANITIZER_APPLE conditional compilation so locks are released before OutputReport across all platforms. Assisted-by: Gemini