From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 0E64971 for ; Thu, 1 Apr 2021 16:58:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1617296292; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=BNxjjSggvaGqqbW1N4ymXDNSnuDdNSwnCnFTODCH6lA=; b=aEQQgvKcJle5+hbyLovhY4b4r/65J4/mILf+dsDhrGvFseqwbZWzFOpcPZstEGrnP5q/cU rFftiJennX1M8NuNpPDMDH6SJ/JX4fBUH/RJfQccEGtmh4k9/J0IvnZ9NBqxgeQZOBAaH9 Zlb792zCi41HQb0SYVmTxWh1If7lxuU= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-240-OHCYwUDDMwSCGkcnNMIA3g-1; Thu, 01 Apr 2021 12:58:09 -0400 X-MC-Unique: OHCYwUDDMwSCGkcnNMIA3g-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 1D5A7190B2A0; Thu, 1 Apr 2021 16:58:08 +0000 (UTC) Received: from gerbillo.redhat.com (ovpn-114-240.ams2.redhat.com [10.36.114.240]) by smtp.corp.redhat.com (Postfix) with ESMTP id C67BD19C46; Thu, 1 Apr 2021 16:58:06 +0000 (UTC) From: Paolo Abeni To: netdev@vger.kernel.org Cc: mptcp@lists.linux.dev, "David S. Miller" , Jakub Kicinski Subject: [PATCH net 0/2] mptcp: mptcp: fix deadlock in mptcp{,6}_release Date: Thu, 1 Apr 2021 18:57:43 +0200 Message-Id: X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 syzkaller has reported a few deadlock triggered by mptcp{,6}_release. These patches address the issue in the easy way - blocking the relevant, multicast related, sockopt options on MPTCP sockets. Note that later on net-next we are going to revert patch 1/2, as a part of a larger MPTCP sockopt implementation refactor Paolo Abeni (2): mptcp: forbit mcast-related sockopt on MPTCP sockets mptcp: revert "mptcp: provide subflow aware release function" net/mptcp/protocol.c | 100 ++++++++++++++++++++----------------------- 1 file changed, 47 insertions(+), 53 deletions(-) -- 2.26.2