linux-kernel - Re: [PATCH 1/2] tcp: fix races in tcp

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Message-ID: <2025031453-underpay-gigahertz-9ba4@gregkh>
Date: Fri, 14 Mar 2025 13:24:09 +0100
From: Greg KH <gregkh@...uxfoundation.org>
To: Youngmin Nam <youngmin.nam@...sung.com>
Cc: stable@...r.kernel.org, ncardwell@...gle.com, edumazet@...gle.com,
	kuba@...nel.org, davem@...emloft.net, dsahern@...nel.org,
	pabeni@...hat.com, horms@...nel.org, guo88.liu@...sung.com,
	yiwang.cai@...sung.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, joonki.min@...sung.com,
	hajun.sung@...sung.com, d7271.choe@...sung.com, sw.ju@...sung.com,
	dujeong.lee@...sung.com, ycheng@...gle.com, yyd@...gle.com,
	kuro@...oa.me, cmllamas@...gle.com, willdeacon@...gle.com,
	maennich@...gle.com, gregkh@...gle.com
Subject: Re: [PATCH 1/2] tcp: fix races in tcp_abort()

On Fri, Mar 14, 2025 at 06:24:45PM +0900, Youngmin Nam wrote:
> From: Eric Dumazet <edumazet@...gle.com>
> 
> tcp_abort() has the same issue than the one fixed in the prior patch
> in tcp_write_err().
> 
> commit 5ce4645c23cf5f048eb8e9ce49e514bababdee85 upstream.
> 
> To apply commit bac76cf89816bff06c4ec2f3df97dc34e150a1c4,
> this patch must be applied first.
> 
> In order to get consistent results from tcp_poll(), we must call
> sk_error_report() after tcp_done().
> 
> We can use tcp_done_with_error() to centralize this logic.
> 
> Fixes: c1e64e298b8c ("net: diag: Support destroying TCP sockets.")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Acked-by: Neal Cardwell <ncardwell@...gle.com>
> Link: https://lore.kernel.org/r/20240528125253.1966136-4-edumazet@google.com
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>
> Cc: <stable@...r.kernel.org> # v5.10+

Did not apply to 5.10.y, what did you want this added to?

thanks,

greg k-h