From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 2A2252F39C2 for ; Thu, 13 Aug 2026 09:20:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786612808; cv=none; b=hRGRD97LpdC9lAjkhqEcnrYNxeIOxyyDKl1gtSe8/Ek6pclgcT+aJ6lJ+xihJRszR0eUxY5yGWY7NgKrdqg+Y51l6bDABY2vWpi1GXgfWcj3fSPbxcmEeuifu/chVL49Chvf29hoawcSfx/+pzCRayVNI0TlonNMLyejBUCFC7M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786612808; c=relaxed/simple; bh=bif14L1QA11yZ/XtbHCmNW3Xbbyxu227v8NhnWVDDmA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=OQDcOUg5b28AZf+0y46a0d4DcQ6tw3+9wFvxVtpd5vKZr6fRZ6lD02XAh0luawDRdV22gZaMvkXv3rYXL/xyV3phA9DszijM3xRIbGq4OuX7rEuFSqS9yn620vyjeQRFebcMf1KgybNptt4jNqAlfPsVjBOiPJvdf4dTcG/u4EM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Ch+OqxLp; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Ch+OqxLp" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D1ADA1F00A3A; Thu, 13 Aug 2026 09:20:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786612806; bh=7HagUwVEKJ2eYFP6BjDmaFXsO4FKaQpTUpaZ+HZIxF8=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=Ch+OqxLppVLlEI2ic/6yYTpw9e1QlIseO/+dlim6dCD0hLhk54+7zUfuUcxNZ35aS D5LVVtIRvEl2v9BKeUrHfyxzbfatcFRR0oqGgVh/A1q0AaPasw9UfAYNRsDCLI6tqC DNPIvsfPOXw9GGNqguIsApnBcnS+1ecO2IcAYm/dZqmeQqIzmfNv/4NKMHmMdGTWxj O5/KN9Wht7F2Z8I0WHfxCVFU3XfMHaNHT3pruHSDDRHZnodRV8cMjYeQueVqSWHcb6 HAjsBlMwP7GzT1ZcDiiBruOr1WO0y61SoV1vfGuzSgnTVzfBceQi4x2w1VYbpsBnaY YM4a6Oe3p/N3g== Message-ID: Date: Thu, 13 Aug 2026 11:20:03 +0200 Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Beta Subject: Re: CI failures on nipa Content-Language: fr To: gang.yan@linux.dev, Paolo Abeni Cc: MPTCP Linux References: <02830f64-bb5f-41fc-8211-5f7aa36b828e@redhat.com> <9db96388a1c72d264d0576e0a58f4944560e93a7@linux.dev> From: Matthieu Baerts Autocrypt: addr=matttbe@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Gang, On 13/08/2026 10:59, gang.yan@linux.dev wrote: > August 13, 2026 at 3:57 PM, "Paolo Abeni" wrote: (...) >> Judging on the final status, I *think*/*guess* the (re)connect is >> hanged, possibly due to bad remote address?!? It could be useful to >> print out on stderr the reconnect destination address. > > Hi Paolo, > > That reminds me of an issue when I was reading mptcp_connect.c a long > time ago: > > At the end of 'sock_connect_mptcp()', it calls 'freeaddrinfo(addr)', > the 'peer' pointer (which points into 'addr') remains. Later, the main loop > uses this peer pointer for reconnection attempts. If the memory has been freed > and reused, the address data could be overwritten, resulting in an invalid > remote address. > > That might cause the hangs or failures you are seeing, right? Good catch! Are you working on a fix for that? I guess we should copy the content, not just the pointer. Or maybe we don't need to do this copy: getaddrinfo() should return the same thing, no? Cheers, Matt -- Sponsored by the NGI0 Core fund.