netdev - Re: [PATCH net] mptcp: Fix crash due to tcp_tsorted_anchor was initialized before release skb

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Message-Id: <164763841287.20195.16890121074112773780.git-patchwork-notify@kernel.org>
Date:   Fri, 18 Mar 2022 21:20:12 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Mat Martineau <mathew.j.martineau@...ux.intel.com>
Cc:     netdev@...r.kernel.org, liyonglong@...natelecom.cn,
        davem@...emloft.net, kuba@...nel.org, matthieu.baerts@...sares.net,
        mptcp@...ts.linux.dev, stable@...r.kernel.org, pabeni@...hat.com
Subject: Re: [PATCH net] mptcp: Fix crash due to tcp_tsorted_anchor was
 initialized before release skb

Hello:

This patch was applied to netdev/net.git (master)
by Jakub Kicinski <kuba@...nel.org>:

On Thu, 17 Mar 2022 15:09:53 -0700 you wrote:
> From: Yonglong Li <liyonglong@...natelecom.cn>
> 
> Got crash when doing pressure test of mptcp:
> 
> ===========================================================================
> dst_release: dst:ffffa06ce6e5c058 refcnt:-1
> kernel tried to execute NX-protected page - exploit attempt? (uid: 0)
> BUG: unable to handle kernel paging request at ffffa06ce6e5c058
> PGD 190a01067 P4D 190a01067 PUD 43fffb067 PMD 22e403063 PTE 8000000226e5c063
> Oops: 0011 [#1] SMP PTI
> CPU: 7 PID: 7823 Comm: kworker/7:0 Kdump: loaded Tainted: G            E
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.2.1 04/01/2014
> Call Trace:
>  ? skb_release_head_state+0x68/0x100
>  ? skb_release_all+0xe/0x30
>  ? kfree_skb+0x32/0xa0
>  ? mptcp_sendmsg_frag+0x57e/0x750
>  ? __mptcp_retrans+0x21b/0x3c0
>  ? __switch_to_asm+0x35/0x70
>  ? mptcp_worker+0x25e/0x320
>  ? process_one_work+0x1a7/0x360
>  ? worker_thread+0x30/0x390
>  ? create_worker+0x1a0/0x1a0
>  ? kthread+0x112/0x130
>  ? kthread_flush_work_fn+0x10/0x10
>  ? ret_from_fork+0x35/0x40
> ===========================================================================
> 
> [...]

Here is the summary with links:
  - [net] mptcp: Fix crash due to tcp_tsorted_anchor was initialized before release skb
    https://git.kernel.org/netdev/net/c/3ef3905aa3b5

You are awesome, thank you!
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