On Thu, Apr 11, 2019 at 08:37:53PM +0000, Arumugam, Kamenee wrote: > On Thu, Apr 11, 2019 at 06:22:45PM +0000, Arumugam, Kamenee wrote: > > > This is a device bug then. > > > A RDMA device must accept and respond to all TLPs that the CPU could create for the user accessible BAR pages. > > > A user process must not be able to crash the CPU or make the device malfunction by accessing the exposed BAR page. This includes a broad range of topics, like mis-aligned acceses, SSE instructions, atomics, >etc. > > > Is blocking AER even enough here? If the device isn't generating a reasonable reply I have a bad feeling worse will happen. > > After blocking unsupported request error, we don't see any other issue including no system hang. Are you specifically testing all the special TLPs the CPU can produce? Jason
