From mboxrd@z Thu Jan 1 00:00:00 1970
Return-Path: <dev-bounces@dpdk.org>
Received: from dpdk.org (dpdk.org [92.243.14.124])
by inbox.dpdk.org (Postfix) with ESMTP id 9921DA04DB;
Mon, 30 Nov 2020 15:41:44 +0100 (CET)
Received: from [92.243.14.124] (localhost [127.0.0.1])
by dpdk.org (Postfix) with ESMTP id 331414F9A;
Mon, 30 Nov 2020 15:41:42 +0100 (CET)
Received: from inbox.dpdk.org (xvm-172-178.dc0.ghst.net [95.142.172.178])
by dpdk.org (Postfix) with ESMTP id EB31A4C99
for <dev@dpdk.org>; Mon, 30 Nov 2020 15:41:40 +0100 (CET)
Received: by inbox.dpdk.org (Postfix, from userid 33)
id BCA83A04DC; Mon, 30 Nov 2020 15:41:39 +0100 (CET)
From: bugzilla@dpdk.org
To: dev@dpdk.org
Date: Mon, 30 Nov 2020 14:41:38 +0000
X-Bugzilla-Reason: AssignedTo
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: DPDK
X-Bugzilla-Component: core
X-Bugzilla-Version: 19.11
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: luca.boccassi@gmail.com
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: <bug-585-3@http.bugs.dpdk.org/>
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 585] Direct PCI access violation with VFIO and
lockdown mode
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <https://mails.dpdk.org/options/dev>,
<mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://mails.dpdk.org/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <https://mails.dpdk.org/listinfo/dev>,
<mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>
https://bugs.dpdk.org/show_bug.cgi?id=3D585
Bug ID: 585
Summary: Direct PCI access violation with VFIO and lockdown
mode
Product: DPDK
Version: 19.11
Hardware: ARM
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: core
Assignee: dev@dpdk.org
Reporter: luca.boccassi@gmail.com
Target Milestone: ---
With DPDK 19.11 on an arm64 platform using vfio-pci, we are getting errors =
on
initialization when kernel lockdown mode is enabled. Lockdown restricts dir=
ect
PCI access, but intentionally allows vfio as it's mediated access. On x86 t=
his
works fine, no illegal accesses are reported, and it seems to be a problem =
only
on arm64.
[ 2.687022] vfio-pci 0008:01:00.1: vfio_ecap_init: hiding ecap 0x0@0x250=
=20=20=20=20=20
[ 3.391535] vfio-pci 0000:01:00.1: enabling device (0000 -> 0002)=20=20=
=20=20=20=20=20=20=20=20=20=20
[ 3.507258] Lockdown: dpdk-app: direct PCI access is restricted; see man
kernel_lockdown.7=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507263] ------------[ cut here ]------------=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507264] pci_write_config:
/devices/platform/48000000.pcie/pci0000:00/0000:00:00.0/0000:01:00.1=20=20=
=20=20=20=20=20=20=20=20=20=20
[ 3.507303] WARNING: CPU: 4 PID: 1473 at /drivers/pci/pci-sysfs.c:765
pci_write_config+0x1bc/0x1c4=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507304] Modules linked in: bnxt_en pcie_iproc_platform pcie_iproc=20=
=20=20=20=20=20=20=20
[ 3.507312] CPU: 4 PID: 1473 Comm: dpdk-app Not tainted 5.4.72 #1=20=20=
=20=20=20=20=20=20=20=20=20=20
[ 3.507313] Hardware name: Overlake (DT)=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20
[ 3.507315] pstate: 60400005 (nZCv daif +PAN -UAO)=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507316] pc : pci_write_config+0x1bc/0x1c4=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507318] lr : pci_write_config+0x1bc/0x1c4=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507318] sp : ffff8000113ebcb0=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20
[ 3.507320] x29: ffff8000113ebcf0 x28: ffff0008e3758000=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507321] x27: 0000000000000000 x26: 0000000000000000=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507323] x25: 0000000056000000 x24: ffffd539ba59a000=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507325] x23: ffff0008e5ad90b0 x22: 0000000000000002=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507326] x21: 00000000ffffffff x20: 0000000000000004=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507327] x19: ffff0008d8594a00 x18: 0000000000000000=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507329] x17: 0000000000000078 x16: 0000000000015f24=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507330] x15: 0000000000000022 x14: 0000000000000068=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507332] x13: 000000000000a144 x12: 0000000000000000=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507333] x11: 0000000000000001 x10: 0000000000000007=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507334] x9 : 31c97f42d035aa00 x8 : 31c97f42d035aa00=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507336] x7 : 0000000000000000 x6 : ffffd539ba5aa81e=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507337] x5 : 0000000000000000 x4 : 0000000000000004=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507339] x3 : 000000000000312e x2 : fffffffffffffe24=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507340] x1 : 0000000000000000 x0 : 0000000000000056=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507342] Call trace:=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20
[ 3.507343] pci_write_config+0x1bc/0x1c4=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20
[ 3.507351] sysfs_kf_bin_write+0x6c/0x94
[ 3.507353] kernfs_fop_write+0x1d4/0x2b0
[ 3.507355] __vfs_write+0x54/0x198
[ 3.507356] vfs_write+0xcc/0x18c
[ 3.507358] __arm64_sys_pwrite64+0x80/0xc0
[ 3.507362] el0_svc_handler+0xe0/0x140
[ 3.507364] el0_svc+0x8/0x208
[ 3.507365] ---[ end trace 116c21626a554aca ]---
--=20
You are receiving this mail because:
You are the assignee for the bug.=