Re: [PATCH net] net: phy: Fix deadlocking in phy_error() invocation

[patchwork-bot+netdevbpf]

Hello:

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

On Fri, 18 Aug 2023 15:54:45 +0300 you wrote:
> Since commit 91a7cda1f4b8 ("net: phy: Fix race condition on link status
> change") all the phy_error() method invocations have been causing the
> nested-mutex-lock deadlock because it's normally done in the PHY-driver
> threaded IRQ handlers which since that change have been called with the
> phydev->lock mutex held. Here is the calls thread:
> 
> IRQ: phy_interrupt()
>      +-> mutex_lock(&phydev->lock); <--------------------+
>          drv->handle_interrupt()                         | Deadlock due
>          +-> ERROR: phy_error()                          + to the nested
>                     +-> phy_process_error()              | mutex lock
>                         +-> mutex_lock(&phydev->lock); <-+
>                             phydev->state = PHY_ERROR;
>                             mutex_unlock(&phydev->lock);
>          mutex_unlock(&phydev->lock);
> 
> [...]

Here is the summary with links:
  - [net] net: phy: Fix deadlocking in phy_error() invocation
    https://git.kernel.org/netdev/net/c/a0e026e7b37e

You are awesome, thank you!
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