Re: [PATCH net 3/8] batman-adv: stop tp_meter sessions during mesh teardown

On Friday, 8 May 2026 17:43:09 CEST Simon Wunderlich wrote:
> From: Jiexun Wang <[email protected]>
> 
> TP meter sessions remain linked on bat_priv->tp_list after the netlink
> request has already finished. When the mesh interface is removed,
> batadv_mesh_free() currently tears down the mesh without first draining
> these sessions.
> 
> A running sender thread or a late incoming tp_meter packet can then keep
> processing against a mesh instance which is already shutting down.
> Synchronize tp_meter with the mesh lifetime by stopping all active
> sessions from batadv_mesh_free() and waiting for sender threads to exit
> before teardown continues.

Regarding the review under 
https://netdev-ai.bots.linux.dev/sashiko/#/patchset/20260508154314.12817-1-sw%40simonwunderlich.de

The fix for this existing problem is planned for the second net PR - splitted 
due to the amount of patches. Besides this split, was not included in this one 
because I am waiting for the author to submit the v2 with my change request 
(to also fix the second occurrence of the invalid `atomic_dec_and_test`): 
https://patchwork.open-mesh.org/project/b.a.t.m.a.n./patch/df73e607bda0c84b22d64d80f8ac887190242baf.1778118303.git.rakukuip@gmail.com/

Regards,
	Sven

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