Hi TL;DR: Bug is known upstream and fixed in anything after 3.15-rc1.
I've reached out to one of the upstream maintainers upstream (K.Y Srinivasan) and he has pointed me to a change that fixes the issues and is actually specific to hv_netvsc with older versions of the Microsoft Hypervisor. The bugfix will be within Linux kernel 3.15, the relevant fix in drivers/net/hyperv/hyperv_net.h is present but hasn't made it into the stable branch on which this package is based (3.14.4): hyperv: Change the receive buffer size for legacy hosts Due to a bug in the Hyper-V host verion 2008R2, we need to use a slightly smaller receive buffer size, otherwise the buffer will not be accepted by the legacy hosts. Signed-off-by: Haiyang Zhang <haiya...@microsoft.com> Signed-off-by: David S. Miller <da...@davemloft.net> Source: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/net/hyperv/hyperv_net.h?id=af9893a3dc790ae0c4d3e68adde12bc3cb9c63fa It defines a NETVSC_RECEIVE_BUFFER_SIZE_LEGACY of 15MB instead of 16MB used on newer versions of this Hypervisor. Technically this also affects Jessie when running as guest on Windows Server 2008 R2. What's the best option for Debian? - Backport patches in 3.15-rc3 into Debian*? - Wait if it makes into linux-stable post 3.14.4+ and then update the package? - Wait until 3.15 is out and then update both jessie and wheeze-backports packages? -- Mathieu * I guess there would be a couple ones since upstream maintainers have updated some components to newer version so there might be a chain of unwanted dependent patches. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
