When I read about rowhammer, I did analyse carefully the memory request pattern and found many similarities to a rowhammer attack on PC. It was several processes issuing small requests on alternating rows, with slowly moving indexes.

After I implemented the change and had a stable system, I went as far as implementing a switch of addressing pattern so that, all other things being equal, I could trigger the bug or not. And it worked as expected.

So yes, i am very confident in the analysis.