On Mon, Aug 26, 2019 at 05:05:12PM +0300, Gal Pressman wrote: > Hi all, > > Lately I've been seeing DMA-API call traces on our automated testing runs which > complain about overlapping mappings of the same cacheline [1]. > The problem is (most likely) caused due to multiple calls to ibv_reg_mr with the > same address, which as a result DMA maps the same physical addresses more than 7 > (ACTIVE_CACHELINE_MAX_OVERLAP) times. > > Is this considered a bad behavior by the test? Should this be caught by > ib_core/driver somehow? If I'm not mistaken here, but we (Mellanox) decided that it is a bug in DMA debug code. Thanks
