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 72321352081; Tue, 26 Aug 2025 13:58:44 +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=1756216724; cv=none; b=JZhpleUG8BN9uj18yO/iT4h+I4O03n1d6vsfnQuJ2GvpNdMFsqin1K66xQVsBVz4GFzdP3+7zLKRYpSl1o0C3qjkAlNIDf3th79ZvQvKWExcfgMch2dUcKl0cuK9dfYn6KhjmqwaY8xgaJ1YFEj1aOBXwU1x8UO9pF+Ww5uIGLA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756216724; c=relaxed/simple; bh=yaLxVBfFj+GbO1OJ7pqf4g+j/GpdhFFn+PYBQqqqn04=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=oUSlu0epf5JMYkdVsKmQFtZZINXzTWSsK0x3Mf+w6whSGmfgspEIGcoyh7abkQnQvqYjiiSSKf+iUJqBZyv24ByjKttRbXoHv8L55+SugmX+i+rrtXk3SNroZsK4R+q8V9yv/pGyhkbJk6kuoHEX0ebY4sy5jNS0Ya+pTQTqHnQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=V8V0G/C3; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="V8V0G/C3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9F25DC4CEF1; Tue, 26 Aug 2025 13:58:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756216724; bh=yaLxVBfFj+GbO1OJ7pqf4g+j/GpdhFFn+PYBQqqqn04=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=V8V0G/C3s7ubeyOvV8EiwR6TQufmajq1vGzztZaR80yPGdMpQVdXbh80ccpPzs6b+ 0rlvDmZIvFYoiyNSiaNIhpEF+/SAWM0eHvWH1K/VaiYhxD874gR+/wHoCb8B0/eTc/ I+dOx7ubtw8jkMYQe9DG/7U6x+vcFuekT8n7jY5c= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thomas Dreibholz , Mat Martineau , "Matthieu Baerts (NGI0)" , Jakub Kicinski Subject: [PATCH 5.15 502/644] mptcp: pm: kernel: flush: do not reset ADD_ADDR limit Date: Tue, 26 Aug 2025 13:09:53 +0200 Message-ID: <20250826110958.937117030@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110946.507083938@linuxfoundation.org> References: <20250826110946.507083938@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Matthieu Baerts (NGI0) commit 68fc0f4b0d25692940cdc85c68e366cae63e1757 upstream. A flush of the MPTCP endpoints should not affect the MPTCP limits. In other words, 'ip mptcp endpoint flush' should not change 'ip mptcp limits'. But it was the case: the MPTCP_PM_ATTR_RCV_ADD_ADDRS (add_addr_accepted) limit was reset by accident. Removing the reset of this counter during a flush fixes this issue. Fixes: 01cacb00b35c ("mptcp: add netlink-based PM") Cc: stable@vger.kernel.org Reported-by: Thomas Dreibholz Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/579 Reviewed-by: Mat Martineau Signed-off-by: Matthieu Baerts (NGI0) Link: https://patch.msgid.link/20250815-net-mptcp-misc-fixes-6-17-rc2-v1-2-521fe9957892@kernel.org Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- net/mptcp/pm_netlink.c | 1 - 1 file changed, 1 deletion(-) --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1582,7 +1582,6 @@ static void __flush_addrs(struct list_he static void __reset_counters(struct pm_nl_pernet *pernet) { WRITE_ONCE(pernet->add_addr_signal_max, 0); - WRITE_ONCE(pernet->add_addr_accept_max, 0); WRITE_ONCE(pernet->local_addr_max, 0); pernet->addrs = 0; }