netdev - Re: [net PATCH] ice: fix locking for Tx timestamp tracking flush

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Date:   Tue, 12 Oct 2021 11:20:06 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Keller@...codeaurora.org, Jacob E <jacob.e.keller@...el.com>
Cc:     netdev@...r.kernel.org, anthony.l.nguyen@...el.com
Subject: Re: [net PATCH] ice: fix locking for Tx timestamp tracking flush

Hello:

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

On Mon, 11 Oct 2021 13:48:06 -0700 you wrote:
> Commit 4dd0d5c33c3e ("ice: add lock around Tx timestamp tracker flush")
> added a lock around the Tx timestamp tracker flow which is used to
> cleanup any left over SKBs and prepare for device removal.
> 
> This lock is problematic because it is being held around a call to
> ice_clear_phy_tstamp. The clear function takes a mutex to send a PHY
> write command to firmware. This could lead to a deadlock if the mutex
> actually sleeps, and causes the following warning on a kernel with
> preemption debugging enabled:
> 
> [...]

Here is the summary with links:
  - [net] ice: fix locking for Tx timestamp tracking flush
    https://git.kernel.org/netdev/net/c/4d4a223a86af

You are awesome, thank you!
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