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Date:   Mon, 18 Jul 2022 10:50:13 +0000
To:     Tariq Toukan <>
Subject: Re: [PATCH net] net/tls: Fix race in TLS device down flow


This patch was applied to netdev/net.git (master)
by David S. Miller <>:

On Fri, 15 Jul 2022 11:42:16 +0300 you wrote:
> Socket destruction flow and tls_device_down function sync against each
> other using tls_device_lock and the context refcount, to guarantee the
> device resources are freed via tls_dev_del() by the end of
> tls_device_down.
> In the following unfortunate flow, this won't happen:
> - refcount is decreased to zero in tls_device_sk_destruct.
> - tls_device_down starts, skips the context as refcount is zero, going
>   all the way until it flushes the gc work, and returns without freeing
>   the device resources.
> - only then, tls_device_queue_ctx_destruction is called, queues the gc
>   work and frees the context's device resources.
> [...]

Here is the summary with links:
  - [net] net/tls: Fix race in TLS device down flow

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