Hello:
This patch was applied to netdev/net.git (master)
by Jakub Kicinski <kuba@xxxxxxxxxx>:
On Thu, 17 Mar 2022 15:09:53 -0700 you wrote:
> From: Yonglong Li <liyonglong@xxxxxxxxxxxxxxx>
>
> 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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