Comment 0 for bug 1921769

We've discovered an issue on Ubuntu 20.04 when used with Kubernetes CNIs that perform offloading using Geneve that causes the kernel to panic on Azure instances with accelerated networking with the following errors:

[ 307.561223] mlx5_core 0001:00:02.0 enP1s1: Error cqe on cqn 0x200, ci 0x3d4, sqn 0x2c5, opcode 0xd, syndrome 0x2, vendor syndrome 0x68
[ 307.573864] mlx5_core 0001:00:02.0 enP1s1: ERR CQE on SQ: 0x2c5
[ 307.764902] mlx5_core 0001:00:02.0 enP1s1: Error cqe on cqn 0x200, ci 0x3d7, sqn 0x2c5, opcode 0xd, syndrome 0x2, vendor syndrome 0x68
[ 307.777332] mlx5_core 0001:00:02.0 enP1s1: ERR CQE on SQ: 0x2c5
[ 322.814393] mlx5_core 0001:00:02.0 enP1s1: Error cqe on cqn 0x218, ci 0x1a7, sqn 0x2bd, opcode 0xd, syndrome 0x2, vendor syndrome 0x68
[ 322.826685] mlx5_core 0001:00:02.0 enP1s1: ERR CQE on SQ: 0x2bd

NVIDIA fixed this issue in https://github.com/torvalds/linux/commit/5ccc0ecda9e8a67add654d93d7e0ac4346c0fa22 , so we're looking to have this backported to at least the linux-azure package.