Re: [PATCH net] net: bridge: mst: fix vlan use-after-free

Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller [off-list ref]:

On Mon, 13 May 2024 14:06:27 +0300 you wrote:

syzbot reported a suspicious rcu usage[1] in bridge's mst code. While
fixing it I noticed that nothing prevents a vlan to be freed while
walking the list from the same path (br forward delay timer). Fix the rcu
usage and also make sure we are not accessing freed memory by making
br_mst_vlan_set_state use rcu read lock.

[1]
 WARNING: suspicious RCU usage
 6.9.0-rc6-syzkaller #0 Not tainted

[...]

Here is the summary with links:
  - [net] net: bridge: mst: fix vlan use-after-free
    https://git.kernel.org/netdev/net/c/3a7c1661ae13

You are awesome, thank you!
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