Re: [PATCH net] net: hsr: free learned nodes on device setup failure

[patchwork-bot+netdevbpf@kernel.org]

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Sat,  8 Aug 2026 13:08:14 +0200 you wrote:
> hsr_dev_finalize() can fail after a lower-device RX handler has
> already been registered (slave A is added before the failable slave B
> and interlink adds). RX handlers run in softirq regardless of the
> master's state, so frames received in that window can learn dynamic
> nodes into node_db, and the error unwind never releases them.
> 
> Free both owned dynamic databases in the unwind, mirroring
> hsr_dellink(). proxy_node_db is provably empty on every current error
> exit (only interlink RX feeds it, and the interlink add is the last
> failable step) and is freed for symmetry. The order is safe:
> hsr_del_port() unregisters each RX handler with synchronize_net()
> before hsr_del_nodes() runs, which removes remaining entries with
> list_del_rcu() and defers their release with call_rcu() for readers
> already under RCU.
> 
> [...]

Here is the summary with links:
  - [net] net: hsr: free learned nodes on device setup failure
    https://git.kernel.org/netdev/net/c/7f16289b91eb

You are awesome, thank you!
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