proc: fix stacktraces on freebsd/amd64/go1.20 #3458
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derekparker
reviewed
Aug 9, 2023
TestStacktraceGoroutine failed intermittently on freebsd/amd64/go1.20. This happens because of two windows, in the scheduler (right after parking a goroutine and just before resuming a parked goroutine) where a thread is associated with a goroutine but running in the system stack and there is no systemstack_switch frame to connect the two stacks.
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TestStacktraceGoroutine failed intermittently on freebsd/amd64/go1.20
due to stacktraces being broken when doing a runtime.nanotime system
call.