On Mon, Dec 16, 2013 at 09:41:56AM +0000, George B. wrote: > Package: src:linux > Version: 3.2.51-1 > Severity: normal > > Hello, > > I am seeing the backtrace below in my kernel log after the system has been > running for several weeks. > > Looks like it has something to do with Xen - memory leak maybe?
I'm not sure it's directly connected with Xen - I think that an interrupt from the physical network interface interrupted a task that is part of the netback driver. This is not necessarily due to a memory leak; more likely this is memory fragmentation. Some oddity of your networking configuration results in linearising large packets: [...] > [955212.368551] netback/0: page allocation failure: order:3, mode:0x20 [...] This means: allocating something between 16 and 32K atomically (no waiting allowed). The call trace appears to show that a packet received by the local TCP via a bridge resulted in an immediate transmission, again going through the bridge, and that then required this large memory allocation. Please provide details of your networking configuration, including: - Are you using ebtables? - Are you using VLAN devices? Ben. -- Ben Hutchings Life is like a sewer: what you get out of it depends on what you put into it. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
