This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- xenial' to 'verification-done-xenial'. If the problem still exists, change the tag 'verification-needed-xenial' to 'verification-failed- xenial'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-xenial ** Tags added: verification-needed-yakkety -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1655420 Title: Ubuntu - ibmveth: abnormally large TCP MSS value caused a TCP session to hang with a zero window Status in linux package in Ubuntu: Fix Released Status in linux source package in Xenial: Fix Committed Status in linux source package in Yakkety: Fix Committed Status in linux source package in Zesty: Fix Released Bug description: == Comment: #0 - THOMAS L. FALCON - 2017-01-10 11:54:24 == This bug is being mirrored for any distributions that include ibmveth large send/receive support. In short, any distribution with ibmveth v1.05 will be affected (releases 14.04.5/Wily+) 2 upstream commits: 1. Set GSO size and type https://github.com/torvalds/linux/commit/7b5967389f5a8dfb9d32843830f5e2717e20995d 2. set GSO segments https://github.com/torvalds/linux/commit/94acf164dc8f1184e8d0737be7125134c2701dbe A VIOS fix is needed as well. ---Problem Description--- When ibmveth interface on a PowerVM logical partition received a large, aggregated packet from firmware, the gso fields in the socket buffer shared info were not filled in correctly. This surfaced in a bug where the TCP rx window calculation algorithm returned a Zero Window even when there was available space. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1655420/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
