Re: [PATCH net-next v7 0/5] netconsole: support automatic target recovery

[Jakub Kicinski]

On Thu, 27 Nov 2025 23:07:02 +0000 Andre Carvalho wrote:
> > Should we not be listening for the REGISTER event then? On boot
> > we force UP the device if we find it, theoretically there may
> > be a case where user space is not configured to UP the device,
> > and then we'd never resume the target?  
> 
> This is indeed a limitation on the current implementation. Based on
> your feedback, I'm working on a new version of this series handling REGISTER
> instead of UP and ensuring we force UP the device.
> This will make it consistent with the boot behavior you described.
> 
> Based on my tests, I can't force the device UP while handling the REGISTER event.
> I believe this is due to dev_open attempting to lock the device which is already held.
> For this reason, I'm resorting to defering this to a workqueue, similar to my approach 
> on v1 [1] (but correctly handling target_list lock).
> 
> Let me know if this approach makes sense or if I'm missing something.

SG, that's probably the most resilient solution.