Re: igc(4) panic: igc_rxrefill

[Michael van Elst <mlelstv%serpens.de@localhost>]

On Sat, Sep 27, 2025 at 03:56:20PM +0200, Thomas Klausner wrote:
> On Tue, Sep 23, 2025 at 09:31:24PM +0100, Michael van Elst wrote:
> > A NOWAIT mbuf allocation failed...
> 
> What are possible causes for that?

You ran out of allocated mbufs and would need to wait for the pool to be
extended. That can happen any time, especially under load and under
memory pressure.

The bug is to not handle this. Other drivers would e.g. reuse the previous
mbuf and drop a packet.


Greetings,
-- 
                                Michael van Elst
Internet: mlelstv%serpens.de@localhost
                                "A potential Snark may lurk in every tree."