Description of problem: Quad x86_64 16G ram running 2.6.21-2950.fc8xen. Acting as dom0 hosting a busy domU fedora mirror. With traffic control enabled on the domU by way of shorewall the dom0 frequently crashes. Sometimes it runs for days sometimes for hours or minutes. Full oops is attached, here's the start of it. Unable to handle kernel NULL pointer dereference at 0000000000000030 RIP: [<ffffffff8040445d>] tcp_tso_segment+0x1d8/0x285 PGD 3d0d16067 PUD 3d172b067 PMD 0 Oops: 0000 [1] SMP Version-Release number of selected component (if applicable): 2.6.21-2950.fc8xen How reproducible: Very frequent but not especially predictable. Steps to Reproduce: 1. Enable traffic control on busy (network wise) domU 2. Watch dom0 for indeterminate period 3. Observe oops and reboot Actual results: oops Expected results: Additional info: This same issue affected me on F7. It seems similar to this http://lists.openwall.net/netdev/2007/02/09/16
Created attachment 273231 [details] kernel oops
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