crash on CSR access for slow slave
Reported by @twlostow 7 years ago, to be checked if it is still an issue.
connect a slow responding slave to CSR (e.g. a memory)
hit it with a large burst of CSR writes (as fast as possible)
try to do some reads
reads will sometimes return incorrect data. Sometimes the system will crash.
Looks like a backpressure issue (putting 1us delay between writes/reads makes the bug disappear).