On Tue, Jul 23, 2019 at 07:27:00AM +0800, Bob Liu wrote: > On 7/22/19 1:39 PM, Ming Lei wrote: > > Hi, > > > > blk-mq may schedule to call queue's complete function on remote CPU via > > IPI, but never provide any way to synchronize the request's complete > > fn. > > > > In some driver's EH(such as NVMe), hardware queue's resource may be freed & > > re-allocated. If the completed request's complete fn is run finally after the > > hardware queue's resource is released, kernel crash will be triggered. > > > > Have you seen the crash? Anyway to emulate/verify this bug.. The crash is reported on nvme-rdma by one RH partner, and the approach of this patchset has been verified already. Thanks, Ming
