From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 0FE61A055E; Wed, 26 Feb 2020 00:52:32 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 48F0B1BF8D; Wed, 26 Feb 2020 00:52:32 +0100 (CET) Received: from inbox.dpdk.org (xvm-172-178.dc0.ghst.net [95.142.172.178]) by dpdk.org (Postfix) with ESMTP id 12DE42C4F for ; Wed, 26 Feb 2020 00:52:31 +0100 (CET) Received: by inbox.dpdk.org (Postfix, from userid 33) id DF3ACA055F; Wed, 26 Feb 2020 00:52:30 +0100 (CET) From: bugzilla@dpdk.org To: dev@dpdk.org Date: Tue, 25 Feb 2020 23:52:30 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: other X-Bugzilla-Version: 18.02 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: stephen@networkplumber.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: dev@dpdk.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All MIME-Version: 1.0 Subject: [dpdk-dev] [Bug 410] KNI deadlocks when used with Mellanox device X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" https://bugs.dpdk.org/show_bug.cgi?id=3D410 Bug ID: 410 Summary: KNI deadlocks when used with Mellanox device Product: DPDK Version: 18.02 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: other Assignee: dev@dpdk.org Reporter: stephen@networkplumber.org Target Milestone: --- The KNI driver calls out to userspace holding the kernel networking lock (RTNL). This causes deadlock when a DPDK device driver (like Mellanox) needs to interact with the kernel to change the underlying device. This is a design flaw in the original implementation of KNI, only exposed by the first bifurcated drivers. See: https://patchwork.dpdk.org/patch/64106/ --=20 You are receiving this mail because: You are the assignee for the bug.=