Hi Joakim, Starting with v5.12-rc3 I noticed that one of our boards, Tegra186 Jetson TX2, was not long resuming from suspend. Bisect points to commit 9c63faaa931e ("net: stmmac: re-init rx buffers when mac resume back") and reverting this on top of mainline fixes the problem. Interestingly, the board appears to partially resume from suspend and I see ethernet appear to resume ... dwc-eth-dwmac 2490000.ethernet eth0: configuring for phy/rgmii link mode dwmac4: Master AXI performs any burst length dwc-eth-dwmac 2490000.ethernet eth0: No Safety Features support found dwc-eth-dwmac 2490000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx I don't see any crash, but then it hangs at some point. Please note that this board is using NFS for mounting the rootfs. Let me know if there is any more info I can provide or tests I can run. Thanks Jon