Re: [PATCH net] net/sched: cls_api: reclaim an empty proto on the error path

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski [off-list ref]:

On Thu, 24 Sep 2026 04:32:49 -0400 you wrote:

Two racing tc filter add requests on the same chain/prio of an
unlocked classifier both run change() on the shared proto and both
can fail: the winner's tcf_chain_tp_delete_empty() attempt gives up
because the loser's handle is still in the idr, and the loser's
error path drops only its own reference without a second reclamation
attempt. The empty proto stays linked in the chain, holding the
chain reference, a block reference and the classifier module
reference until the chain or block is torn down.

[...]

Here is the summary with links:
  - [net] net/sched: cls_api: reclaim an empty proto on the error path
    https://git.kernel.org/netdev/net/c/0bb8eab29b55

You are awesome, thank you!
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