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Subject: Re: [PATCH v2 1/1] net/sched: cls_u32: Fix reference counter leak leading
 to overflow
From:   patchwork-bot+netdevbpf@kernel.org
Message-Id: <168630782237.20473.1733377791755125144.git-patchwork-notify@kernel.org>
Date:   Fri, 09 Jun 2023 10:50:22 +0000
References: <20230608072903.3404438-1-lee@kernel.org>
In-Reply-To: <20230608072903.3404438-1-lee@kernel.org>
To:     Lee Jones <lee@kernel.org>
Cc:     jhs@mojatatu.com, xiyou.wangcong@gmail.com, jiri@resnulli.us,
        davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
        pabeni@redhat.com, linux-kernel@vger.kernel.org,
        netdev@vger.kernel.org, stable@kernel.org
Precedence: bulk

Hello:

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