On Fri, Dec 20, 2024 at 05:10:32PM +0000, Holger Kiehl wrote: > Hello, > > since upgrading from kernel 6.10 to 6.11 (also 6.12) one Infiniband > card sometimes hits this error: > > kernel: workqueue: Failed to create a rescuer kthread for wq "ipoib_wq": -EINTR > kernel: ib0: failed to allocate device WQ > kernel: mlx5_1: failed to initialize device: ib0 port 1 (ret = -12) > kernel: mlx5_1: couldn't register ipoib port 1; error -12 > > The system has two cards: > > 41:00.0 Infiniband controller: Mellanox Technologies MT28908 Family [ConnectX-6] > c4:00.0 Infiniband controller: Mellanox Technologies MT28908 Family [ConnectX-6] > > If that happens one cannot use that card for TCP/IP communication. It does > not always happen, but when it does it always happens with the second > card mlx5_1. Never with mlx5_0. This happens on four different systems. > > Any idea what I can do to stop this from happening? It is not related to the FW but to how your system loads kernel modules. This merged PR in rdma-core probably fixes it. * Ensure RDMA service loads modules in initrd - https://github.com/linux-rdma/rdma-core/pull/1481 Thanks > > Regards, > Holger > > PS: Firmware for both cards is 20.41.1000
