From: patchwork-bot+netdevbpf@kernel.org
To: Lin Ma <linma@zju.edu.cn>
Cc: jk@codeconstruct.com.au, matt@codeconstruct.com.au,
davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v0] mctp: defer the kfree of object mdev->addrs
Date: Tue, 26 Apr 2022 07:50:10 +0000 [thread overview]
Message-ID: <165095941090.3686.1103250887116949143.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20220422114340.32346-1-linma@zju.edu.cn>
Hello:
This patch was applied to netdev/net.git (master)
by Paolo Abeni <pabeni@redhat.com>:
On Fri, 22 Apr 2022 19:43:40 +0800 you wrote:
> The function mctp_unregister() reclaims the device's relevant resource
> when a netcard detaches. However, a running routine may be unaware of
> this and cause the use-after-free of the mdev->addrs object.
>
> The race condition can be demonstrated below
>
> cleanup thread another thread
> |
> unregister_netdev() | mctp_sendmsg()
> ... | ...
> mctp_unregister() | rt = mctp_route_lookup()
> ... | mctl_local_output()
> kfree(mdev->addrs) | ...
> | saddr = rt->dev->addrs[0];
> |
>
> [...]
Here is the summary with links:
- [v0] mctp: defer the kfree of object mdev->addrs
https://git.kernel.org/netdev/net/c/b561275d633b
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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prev parent reply other threads:[~2022-04-26 7:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-22 11:43 [PATCH v0] mctp: defer the kfree of object mdev->addrs Lin Ma
2022-04-26 3:30 ` Jeremy Kerr
2022-04-26 7:50 ` patchwork-bot+netdevbpf [this message]
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