netdev - Re: [Patch net-next v3] net: fix dev_ifsioc

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Message-Id: <161309640848.12988.7029386535147942032.git-patchwork-notify@kernel.org>
Date:   Fri, 12 Feb 2021 02:20:08 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     netdev@...r.kernel.org, cong.wang@...edance.com,
        sishuai@...due.edu, eric.dumazet@...il.com, kuba@...nel.org
Subject: Re: [Patch net-next v3] net: fix dev_ifsioc_locked() race condition

Hello:

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

On Thu, 11 Feb 2021 11:34:10 -0800 you wrote:
> From: Cong Wang <cong.wang@...edance.com>
> 
> dev_ifsioc_locked() is called with only RCU read lock, so when
> there is a parallel writer changing the mac address, it could
> get a partially updated mac address, as shown below:
> 
> Thread 1			Thread 2
> // eth_commit_mac_addr_change()
> memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
> 				// dev_ifsioc_locked()
> 				memcpy(ifr->ifr_hwaddr.sa_data,
> 					dev->dev_addr,...);
> 
> [...]

Here is the summary with links:
  - [net-next,v3] net: fix dev_ifsioc_locked() race condition
    https://git.kernel.org/netdev/net-next/c/3b23a32a6321

You are awesome, thank you!
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