Hi,
we have found an issue with Armbian 5.31 on a Banana Pi M2+ board that occurs when IP forwarding is enabled and there is high network load.
How to reproduce this issue:
Enable IP forwarding on the M2+: sysctl -w net.ipv4.ip_forward=1
Install nginx or another web server on the M2+
Use ncat to send a large file (e.g. 4 GB) from one host to another via the M2+
Use ab to create additional load on the nginx server
Soon there will be a kernel panic, for example (see attachment for more examples):
Before the kernel panic the ksoftirqd thread uses 100% of one core.
Best regards,
bprinz
logs.zip