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 3693A1EEA49 for ; Tue, 19 May 2026 02:42:56 +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=1779158576; cv=none; b=ov4dtzuxeMTHcfLm2bEvg6n9sKkS5IoZjeDJWXWhy+gKbk4pC2f0hSY76F22qj3qP3pn+lBR8k4raDZlQd8UT+m64ihAiE1NnGb05X4+KOx2FFzZWxspgVfGUsf23a77Nah7okdyGMpEW+cjZXBT2v5IoFq1UEMlPvTq9FoAtGM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779158576; c=relaxed/simple; bh=Va6FV++iacZjVy5ULX03da9ro/nhqUEVuo38lm+JIPY=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=V8TR1l7Vb52Nt6MAPdTzi94bwTOCuIyK/7jdfb4Tn74mqJfo59SBLmJEtOnKYg2NFbyf8RPek0lkrE1Wtp/6U4qP92SQ89jZcNUoIJTZqbAYr/UTJXQJCJcTNRQkSy1+VS4f73TMzEcplbCDl+P5UdJ3kUwbgsThN70bhhhQao8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KGaOws63; 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="KGaOws63" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C1C5AC2BCB8; Tue, 19 May 2026 02:42:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1779158576; bh=Va6FV++iacZjVy5ULX03da9ro/nhqUEVuo38lm+JIPY=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=KGaOws63rCUcg9ZjSZ+dGqBa1RaoJHuJIR6ctEvtaIkuPYpp9wlZiiw3YlGoISxtH 4PqTIZEroVRVST+Qm15AkXjMq/ZkabUu6rH6XQa8/+ia5yjwjsDgKYTPsdz8hJ8bFB IdJp+HB9FgcKHndOOfkRWxTbIAiulpkRhZz9/YGgTa2ya1opL/f4V8gU9LT7aUz0zR KVIrM4yx4TBH4oUUqSAAbPIv8L6Ii5Z4aoSwQjUgQz/XAW9L1ExZr3Coe3GKWN6JoL SHksExAClMslkBduOUNdZq+hkKONY/X21JBYlQRhhv3sPl2EDclzqWZG4zldHGVgKd 4MfT+/L44sKQA== Message-ID: <8b0af4e5-060a-486b-b2c0-3f686347b15e@kernel.org> Date: Tue, 19 May 2026 12:42:52 +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 6.1.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-certainty-pyromania-d178@gregkh> <20260519004537.1928014-1-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 10:45, 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 > 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. Cheers, Matt -- Sponsored by the NGI0 Core fund.