On stock kernel 4.4.0.184-214, issuing "tc qdisc add dev eth0 root fq maxrate 25mbit" causes CPU lockup
(NMI watchdog: BUG: soft lockup - CPU#26 stuck for 22s! [tc:6394])
This does not occur on 4.4.0.179 or earlier.
Happens on both a intel i40e driver and ixgbe.
---
AlsaDevices:
total 0
crw-rw----+ 1 root audio 116, 1 Jun 15 14:52 seq
crw-rw----+ 1 root audio 116, 33 Jun 15 14:52 timer
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.20.1-0ubuntu2.23
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=09e7e0db-e2ed-4cb1-8d1b-2eefdaa81d3a
InstallationDate: Installed on 2019-02-22 (479 days ago)
InstallationMedia: Ubuntu-Server 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
IwConfig: Error: [Errno 2] No such file or directory
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 0557:2419 ATEN International Co., Ltd
Bus 001 Device 003: ID 0557:7000 ATEN International Co., Ltd Hub
Bus 001 Device 002: ID 0d3d:0040 Tangtop Technology Co., Ltd PS/2 Adapter
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Supermicro SSG-6029P-E1CR12L
Package: linux (not installed)
PciMultimedia:
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US
SHELL=/bin/bash
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-184-generic root=UUID=8b0d6ed1-2955-4f7a-aeb6-cbfa319aed17 ro text nomodeset consoleblank=0 nopti crashkernel=384M-:128M crashkernel=384M-2G:64M,2G-:768M
ProcVersionSignature: Ubuntu 4.4.0-184.214-generic 4.4.223
RelatedPackageVersions:
linux-restricted-modules-4.4.0-184-generic N/A
linux-backports-modules-4.4.0-184-generic N/A
linux-firmware 1.157.23
RfKill: Error: [Errno 2] No such file or directory
Tags: xenial
Uname: Linux 4.4.0-184-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 02/27/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2.0b
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: X11DPH-T
dmi.board.vendor: Supermicro
dmi.board.version: 1.01
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 1
dmi.chassis.vendor: Supermicro
dmi.chassis.version: 0123456789
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2.0b:bd02/27/2018:svnSupermicro:pnSSG-6029P-E1CR12L:pvr0123456789:rvnSupermicro:rnX11DPH-T:rvr1.01:cvnSupermicro:ct1:cvr0123456789:
dmi.product.name: SSG-6029P-E1CR12L
dmi.product.version: 0123456789
dmi.sys.vendor: Supermicro
---
AlsaDevices:
total 0
crw-rw----+ 1 root audio 116, 1 Jun 15 14:52 seq
crw-rw----+ 1 root audio 116, 33 Jun 15 14:52 timer
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.20.1-0ubuntu2.23
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=09e7e0db-e2ed-4cb1-8d1b-2eefdaa81d3a
InstallationDate: Installed on 2019-02-22 (479 days ago)
InstallationMedia: Ubuntu-Server 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
IwConfig: Error: [Errno 2] No such file or directory
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 0557:2419 ATEN International Co., Ltd
Bus 001 Device 003: ID 0557:7000 ATEN International Co., Ltd Hub
Bus 001 Device 002: ID 0d3d:0040 Tangtop Technology Co., Ltd PS/2 Adapter
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Supermicro SSG-6029P-E1CR12L
Package: linux (not installed)
PciMultimedia:
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US
SHELL=/bin/bash
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-184-generic root=UUID=8b0d6ed1-2955-4f7a-aeb6-cbfa319aed17 ro text nomodeset consoleblank=0 nopti crashkernel=384M-:128M crashkernel=384M-2G:64M,2G-:768M
ProcVersionSignature: Ubuntu 4.4.0-184.214-generic 4.4.223
RelatedPackageVersions:
linux-restricted-modules-4.4.0-184-generic N/A
linux-backports-modules-4.4.0-184-generic N/A
linux-firmware 1.157.23
RfKill: Error: [Errno 2] No such file or directory
Tags: xenial
Uname: Linux 4.4.0-184-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 02/27/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2.0b
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: X11DPH-T
dmi.board.vendor: Supermicro
dmi.board.version: 1.01
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 1
dmi.chassis.vendor: Supermicro
dmi.chassis.version: 0123456789
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2.0b:bd02/27/2018:svnSupermicro:pnSSG-6029P-E1CR12L:pvr0123456789:rvnSupermicro:rnX11DPH-T:rvr1.01:cvnSupermicro:ct1:cvr0123456789:
dmi.product.name: SSG-6029P-E1CR12L
dmi.product.version: 0123456789
dmi.sys.vendor: Supermicro
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1883597
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.