Messages in this thread | | | Date | Tue, 15 Jan 2013 15:56:25 -0500 | From | "J. Bruce Fields" <> | Subject | Re: BUG at net/sunrpc/svc_xprt.c:921 |
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On Mon, Jan 14, 2013 at 11:16:00PM -0500, Mark Lord wrote: > On 13-01-14 03:37 PM, J. Bruce Fields wrote: > > Thanks for the report. > > > > On Mon, Jan 14, 2013 at 11:17:09AM -0500, Mark Lord wrote: > >> Since upgrading to 3.7, and now 3.7.2, my AMD-450E based server > > > > It's acting as an NFS client, right? > > Client and server, with other Linux boxes all running 3.something kernels. > > > What did you upgrade from? > > 3.4.something, I believe. > > >> is getting these BUG complaints. The .config file is gzip'd/attached. > > > > Is this easy to reproduce? > > So far, it seems to pop up within a day or so of any reboot. > I normally only reboot that system for a kernel upgrade, > but can do so a bit more often if there's useful info to collect.
So this means svc_delete_xprt was called on an xprt twice.
That could happen if server threads are still running (and calling svc_recv) after we start shutting down the server: svc_shutdown_net assumes that server threads are already shut down, but that isn't true any more after the containerization work.
I thought that would only be a bug for users actually running multiple containers, but looking at nfs_callback_down, I don't think that's true--it seems to always shut down the thread last.
--b.
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