On Tue, Sep 3, 2024 at 4:03 AM Greg KH gregkh@linuxfoundation.org wrote:
On Tue, Sep 03, 2024 at 09:37:30AM +0200, Christian Theune wrote:
Hi,
the issue was so far handled in https://lore.kernel.org/regressions/ZsyMzW-4ee_U8NoX@eldamar.lan/T/#m390d6ef... and https://bugzilla.kernel.org/show_bug.cgi?id=219129
I haven’t seen any communication whether a backport for 5.15 is already in progress, so I thought I’d follow up here.
Someone needs to send a working set of patches to apply.
The following stack of patches applies cleanly to 5.15.166 (original SHA1s, git log order, so inverse of order to apply):
89add40066f9e net: drop bad gso csum_start and offset in virtio_net_hdr 9840036786d9 gso: fix dodgy bit handling for GSO_UDP_L4 fc8b2a619469 net: more strict VIRTIO_NET_HDR_GSO_UDP_L4 validation
All three are already present in 6.1.109
Please let me know if I should send that stack using git send-email, or whether this is sufficient into to backport.
The third commit has one Fixes referencing them:
1382e3b6a350 net: change maximum number of UDP segments to 128
This simple -2/+2 line patch unfortunately cannot be backported without conflicts without backporting non-stable feature changes. There is a backport to 6.1.y, but that also won't apply cleanly to 5.15.166 without backporting a feature (e2a4392b61f6 "udp: introduce udp->udp_flags"), which itself does not apply cleanly.
So simplest is probably to fix up this commit and send it using git send-email. I can do that as part of the stack with the above 3 patches, or stand-alone if the above can be cherry-picked by SHA1.
Thanks,
Willem