Hello:
This patch was applied to bpf/bpf.git (master)
by Martin KaFai Lau <martin.lau@xxxxxxxxxx>:
On Mon, 28 Oct 2024 14:52:26 +0800 you wrote:
> The tcp_bpf_recvmsg_parser() function, running in user context,
> retrieves seq_copied from tcp_sk without holding the socket lock, and
> stores it in a local variable seq. However, the softirq context can
> modify tcp_sk->seq_copied concurrently, for example, n tcp_read_sock().
>
> As a result, the seq value is stale when it is assigned back to
> tcp_sk->copied_seq at the end of tcp_bpf_recvmsg_parser(), leading to
> incorrect behavior.
>
> [...]
Here is the summary with links:
- [v2] bpf: fix filed access without lock
https://git.kernel.org/bpf/bpf/c/2ce9abd6e1e1
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html
