On my PowerMac G5 7,3 I keep getting those: gem 0001:04:0f.0 enP1p4s15f0: RX MAC fifo overflow smac[03910440] The machine and network transfer stays usable however (I think). These errors seem to pop up more often when doing large file transfers over NFS. [...] [ 17.444429] sungem_phy: PHY ID: 2062e0, addr: 1 [ 17.444686] gem 0001:04:0f.0 enP1p4s15f0: Found BCM5421-K2 PHY [ 17.445337] IPv6: ADDRCONF(NETDEV_UP): enP1p4s15f0: link is not ready [ 22.327581] gem 0001:04:0f.0 enP1p4s15f0: Link is up at 1000 Mbps, full-duplex [ 22.327893] gem 0001:04:0f.0 enP1p4s15f0: Pause is enabled (rxfifo: 10240 off: 7168 on: 5632) [ 22.328124] IPv6: ADDRCONF(NETDEV_CHANGE): enP1p4s15f0: link becomes ready [ 23.216720] NET: Registered protocol family 17 [ 23.813218] RPC: Registered named UNIX socket transport module. [ 23.813384] RPC: Registered udp transport module. [ 23.813482] RPC: Registered tcp transport module. [ 23.813584] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 24.240416] Key type dns_resolver registered [ 24.575859] NFS: Registering the id_resolver key type [ 24.576034] Key type id_resolver registered [ 24.583516] Key type id_legacy registered [ 1367.699100] gem 0001:04:0f.0 enP1p4s15f0: RX MAC fifo overflow smac[03910440] [ 1367.799123] gem 0001:04:0f.0 enP1p4s15f0: RX MAC fifo overflow smac[03810440]
Still a problem on 4.19.19.
Created attachment 280931 [details] dmesg (G4 MDD, kernel 4.19.19) PowerMac G4 MDDs sungem is also effected: [...] [ 19.294940] sungem_phy: PHY ID: 2060e1, addr: 0 [ 19.295210] gem 0002:20:0f.0 enP2p32s15f0: Found BCM5421 PHY [ 19.295749] IPv6: ADDRCONF(NETDEV_UP): enP2p32s15f0: link is not ready [ 20.321602] IPv6: ADDRCONF(NETDEV_UP): enP2p32s15f0: link is not ready [ 20.369894] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 129.184818] [drm] fb mappable at 0xA0040000 [ 129.184849] [drm] vram apper at 0xA0000000 [ 129.184864] [drm] size 8294400 [ 129.184876] [drm] fb depth is 24 [ 129.184888] [drm] pitch is 7680 [ 129.235839] Console: switching to colour frame buffer device 240x67 [ 129.291174] radeon 0000:00:10.0: fb0: radeondrmfb frame buffer device [ 175.068165] gem 0002:20:0f.0 enP2p32s15f0: Link is up at 1000 Mbps, full-duplex [ 175.068575] gem 0002:20:0f.0 enP2p32s15f0: Pause is enabled (rxfifo: 10240 off: 7168 on: 5632) [ 175.068955] IPv6: ADDRCONF(NETDEV_CHANGE): enP2p32s15f0: link becomes ready [ 357.861689] RPC: Registered named UNIX socket transport module. [ 357.861928] RPC: Registered udp transport module. [ 357.862071] RPC: Registered tcp transport module. [ 357.862212] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 358.200627] Key type dns_resolver registered [ 358.276018] NFS: Registering the id_resolver key type [ 358.276245] Key type id_resolver registered [ 358.276371] Key type id_legacy registered [ 411.889990] gem 0002:20:0f.0 enP2p32s15f0: RX MAC fifo overflow smac[03910440] [ 1272.453096] gem 0002:20:0f.0 enP2p32s15f0: RX MAC fifo overflow smac[03810440] [ 1273.405821] gem 0002:20:0f.0 enP2p32s15f0: RX MAC fifo overflow smac[02010440] [ 1273.431930] gem 0002:20:0f.0 enP2p32s15f0: RX MAC fifo overflow smac[02010440] [ 1273.452705] gem 0002:20:0f.0 enP2p32s15f0: RX MAC fifo overflow smac[02010440] [ 1273.506203] gem 0002:20:0f.0 enP2p32s15f0: RX MAC fifo overflow smac[03810440] [ 1274.066086] gem 0002:20:0f.0 enP2p32s15f0: RX MAC fifo overflow smac[02010440] [...]
Created attachment 281923 [details] dmesg (5.1-rc1, G5 7,3) Still around in 5.1-rc1. [...] [ 3451.999674] gem 0001:04:0f.0 enP1p4s15f0: RX MAC fifo overflow smac[03910440] [ 3452.025242] gem 0001:04:0f.0 enP1p4s15f0: RX MAC fifo overflow smac[03810440] [...]
On 5.4-rc4 I am getting now: [ 43.822417] sungem_phy: PHY ID: 2060e1, addr: 0 [ 43.831184] gem 0002:20:0f.0 enP2p32s15f0: Found BCM5421 PHY [ 47.502223] gem 0002:20:0f.0 enP2p32s15f0: Link is up at 1000 Mbps, full-duplex [ 47.502697] gem 0002:20:0f.0 enP2p32s15f0: Pause is enabled (rxfifo: 10240 off: 7168 on: 5632) [ 47.503173] IPv6: ADDRCONF(NETDEV_CHANGE): enP2p32s15f0: link becomes ready [...] [ 423.097905] gem 0002:20:0f.0 enP2p32s15f0: Memory squeeze, deferring packet [ 423.125951] gem 0002:20:0f.0 enP2p32s15f0: Memory squeeze, deferring packet [ 423.148828] gem 0002:20:0f.0 enP2p32s15f0: Memory squeeze, deferring packet [ 423.156830] gem 0002:20:0f.0 enP2p32s15f0: RX MAC fifo overflow smac[00910440] [ 423.243823] gem 0002:20:0f.0 enP2p32s15f0: Memory squeeze, deferring packet
Created attachment 288223 [details] dmesg (5.6.2, PowerMac G4 DP) Still in recent kernels (5.6.2).
Created attachment 288225 [details] kernel .config (5.6.2, PowerMac G4 DP)