Re: [PATCH net] net: stmmac: fix kernel panic due to NULL pointer dereference of plat->est

Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Fri, 20 Aug 2021 21:26:22 +0800 you wrote:

In the case of taprio offload is not enabled, the error handling path
causes a kernel crash due to kernel NULL pointer deference.

Fix this by adding check for NULL before attempt to access 'plat->est'
on the mutex_lock() call.

The following kernel panic is observed without this patch:

[...]

Here is the summary with links:
  - [net] net: stmmac: fix kernel panic due to NULL pointer dereference of plat->est
    https://git.kernel.org/netdev/net/c/82a44ae113b7

You are awesome, thank you!
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