Re: [PATCH net] net: dst: block BH in ipip6_tunnel_xmit

[Eric Dumazet]

On Sun, Jun 21, 2026 at 8:31 PM yuan.gao <yuan.gao@xxxxxxxxx> wrote:
>
> Similar to commit 1378817486d6 ("tipc: block BH before using dst_cache"),
> the dst cache helper functions must be invoked with local BH disabled.
>
> This ensures proper synchronization and fixes a potential race condition
> on SMP systems.
>
> Signed-off-by: yuan.gao <yuan.gao@xxxxxxxxx>
> ---

All ndo_start_xmit() methods already run with BH blocked, can you give
us a stack trace when this would not be enforced?

You forgot a Fixes: tag.