On Fri, 22 Nov 2019, syzbot wrote: > Hello, > > syzbot has tested the proposed patch but the reproducer still triggered > crash: > INFO: rcu detected stall in dummy_timer > > radio-si470x 1-1:0.0: non-zero urb status (-71) > radio-si470x 4-1:0.0: non-zero urb status (-71) > radio-si470x 3-1:0.0: non-zero urb status (-71) Oliver: The reason for this stall is because the driver goes into a tight resubmit loop when the interrupt URB completes with an unrecognized error status. Instead, the driver should log an error message and avoid resubmitting. Error recovery can be done at a higher level. In other words, change the goto resubmit; /* Maybe we can recover. */ line in the completion handler into a return. Alan Stern
