Re: [PATCH 1/1] batman-adv: Broken sync while rescheduling delayed work

On Wed, 7 Jun 2023 17:55:15 +0200 Simon Wunderlich wrote:

The reason for these issues is the lack of synchronization. Delayed work (batadv_dat_purge) schedules new timer/work while the device is being deleted. As the result new timer/delayed work is set after cancel_delayed_work_sync() was called. So after the device is freed the timer list contains pointer to already freed memory.

I guess this is better than status quo but is the fix really complete? We're still not preventing the timer / work from getting scheduled and staying alive after the netdev has been freed, right?