From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C248C3403E6 for ; Tue, 19 May 2026 13:39:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779197943; cv=none; b=IMGOKFyqzN8v8pfpV3/l4pLvH/Vz2BTkPbLfCqR8nf1LoOQJ09y3CqdQHHHErluQgp3p6QFJAEK9WBP4K3qNiZPOHt+rHD6CFRC39grTfKwDdFZeU6pmOYiubv13zmAqSuAvzqmG1nMEF7YGs9cGNnFbMKOz/rWUcDLu3/4+82A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779197943; c=relaxed/simple; bh=/oUytM5NEWjbEzYOEVQxJkqDT72gJMtZvFyNGyCSQ6E=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=kYaaFqBL5ZPtiU5Gk01enNJGuQPabTNbiMGo8TtUoI04aqin5FFkOV2pD+hm4nCs91jXy4quKQ8HsOxpA44Apr4i8kJ45gr3njsY79dIgkcen2WJ1a2JiJwbQ29ZddqJyd7QQdCPTkhpgm01qQ2JLhOhX6LGuUl6BTkyKGSireg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HU2Wki+1; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="HU2Wki+1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1B8DEC2BCC6; Tue, 19 May 2026 13:39:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1779197943; bh=/oUytM5NEWjbEzYOEVQxJkqDT72gJMtZvFyNGyCSQ6E=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=HU2Wki+1FU58wHTZL21Hr2w4+gcWrktqYKH+es/szk47shcd1JPTjLYU/L5X0afwY m04oGWdFJWZqNAA8e61rHGzoXkXETx0GJT/Y21bSu/Gxc9aTgBs9//IKs/ewK1Eo8d EDcsVqymsDkAeXYGdLDwpHM/tIe9Pi9XbH9gkGAzrfVv+jBdplk+QH7BWqCyssL3DE meIBAjFxkMSub3F5bAtXi0V5dNN11E5n9wP8Gmpz2NY8YHCVJE8SgvYO9/yk6Sm6gx 5fQGaMEsskRozQ+zZGKuq5JJANIqBnLt8ZFsLotC37PebKt7cqoEkzQagpcN9dEW0r zt3xzMm4Efolw== Message-ID: <786de99f-a568-4862-95e3-94f94cf7c132@kernel.org> Date: Tue, 19 May 2026 23:38:59 +1000 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Beta Subject: Re: [PATCH 5.10.y] mptcp: pm: ADD_ADDR rtx: free sk if last Content-Language: fr To: Sasha Levin , stable@vger.kernel.org Cc: Mat Martineau , Jakub Kicinski References: <2026051243-blah-wound-3e54@gregkh> <20260519115251.2241418-1-sashal@kernel.org> From: Matthieu Baerts Autocrypt: addr=matttbe@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Sasha, On 19/05/2026 21:52, Sasha Levin wrote: > From: "Matthieu Baerts (NGI0)" > > [ Upstream commit b7b9a461569734d33d3259d58d2507adfac107ed ] > > When an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer(), > and released at the end. > > If at that moment, it was the last reference being held, the sk would > not be freed. sock_put() should then be called instead of __sock_put(). > > But that's not enough: if it is the last reference, sock_put() will call > sk_free(), which will end up calling sk_stop_timer_sync() on the same > timer, and waiting indefinitely to finish. So it is needed to mark that > the timer is done at the end of the timer handler when it has not been > rescheduled, not to call sk_stop_timer_sync() on "itself". > > Fixes: 00cfd77b9063 ("mptcp: retransmit ADD_ADDR when timeout") > Cc: stable@vger.kernel.org > Reviewed-by: Mat Martineau > Signed-off-by: Matthieu Baerts (NGI0) > Link: https://patch.msgid.link/20260505-net-mptcp-pm-fixes-7-1-rc3-v1-5-fca8091060a4@kernel.org > Signed-off-by: Jakub Kicinski > [ applied fix to pm_netlink.c instead of pm.c due to pre-split file layout ] > Signed-off-by: Sasha Levin See my comment for the same patch for 6.12: most conflicts fixed here shouldn't exist if patches you sent earlier are applied first. So a new version is needed. Cheers, Matt -- Sponsored by the NGI0 Core fund.