On Wed, Jan 05, 2022 at 05:16:06PM +0000, Trond Myklebust wrote: > > I'm confused, RPC/RDMA should never touch a umem at all. > > > > Is this really the other bug where user and kernel MR are getting > > confused? > > > > As far as I know, RPC/RDMA is just using the RDMA api to register and > unregister chunks of memory, so it is definitely not directly touching > the umem. I mean, RPC/RDMA doesn't have a umem at all, so seeing it any stack trace says something is corrupted I suppose it is this: https://lore.kernel.org/r/20211222101312.1358616-1-maorg@xxxxxxxxxx Jason