On Sat, May 29, 2021 at 4:30 AM Jason Gunthorpe <jgg@xxxxxxxxxx> wrote: > > On Thu, May 27, 2021 at 02:47:45PM -0500, Bob Pearson wrote: > > These patches optimize the memory ordering in rxe_queue.h so > > that user space and not kernel space indices are protected for loads > > with smp_load_acquire() and stores with smp_store_release(). The > > original implementation of this did not apply to all index references > > which has recently caused test case errors traced to stale memory loads. > > These patches fix those errors and also protect kernel indices from > > malicious modification by user space. > > I didn't read it carefully, but I think this captures the basic > solution I made tests with rdma-core. With or without changes of kernel-headers/rdma/rdma_user_rxe.h, the previously mentioned 17 errors disappear. So this patch series takes effect. Zhu Yanjun > > Jason
