netdev - Re: [PATCH v2 1/1] net/sched: cls_u32: Fix reference counter leak leading to overflow

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Message-Id: 
 <168630782237.20473.1733377791755125144.git-patchwork-notify@kernel.org>
Date: Fri, 09 Jun 2023 10:50:22 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Lee Jones <lee@...nel.org>
Cc: jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us,
 davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
 linux-kernel@...r.kernel.org, netdev@...r.kernel.org, stable@...nel.org
Subject: Re: [PATCH v2 1/1] net/sched: cls_u32: Fix reference counter leak leading
 to overflow

Hello:

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

On Thu,  8 Jun 2023 08:29:03 +0100 you wrote:
> In the event of a failure in tcf_change_indev(), u32_set_parms() will
> immediately return without decrementing the recently incremented
> reference counter.  If this happens enough times, the counter will
> rollover and the reference freed, leading to a double free which can be
> used to do 'bad things'.
> 
> In order to prevent this, move the point of possible failure above the
> point where the reference counter is incremented.  Also save any
> meaningful return values to be applied to the return data at the
> appropriate point in time.
> 
> [...]

Here is the summary with links:
  - [v2,1/1] net/sched: cls_u32: Fix reference counter leak leading to overflow
    https://git.kernel.org/netdev/net/c/04c55383fa56

You are awesome, thank you!
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