| 2020-02-25 22:44:26 |
Piotr Morgwai Kotarbiński |
bug |
|
|
added bug |
| 2020-02-25 22:46:17 |
Piotr Morgwai Kotarbiński |
attachment added |
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dmesg output https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe/+bug/1864754/+attachment/5331016/+files/dmesg.log |
|
| 2020-02-25 22:47:32 |
Piotr Morgwai Kotarbiński |
attachment added |
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output of lspci -vvnn https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe/+bug/1864754/+attachment/5331017/+files/lspci-vvnn.log |
|
| 2020-02-29 21:33:04 |
Piotr Morgwai Kotarbiński |
attachment added |
|
output of dmesg with 5.3.0-42.34_18.04.1+lp1864754v1 kernel https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe/+bug/1864754/+attachment/5332281/+files/dmesg.log |
|
| 2020-03-02 17:43:52 |
Andrea Righi |
linux-signed-hwe (Ubuntu): assignee |
|
Andrea Righi (arighi) |
|
| 2020-03-02 17:43:57 |
Andrea Righi |
linux-signed-hwe (Ubuntu): importance |
Undecided |
Medium |
|
| 2020-03-02 17:44:14 |
Andrea Righi |
nominated for series |
|
Ubuntu Bionic |
|
| 2020-03-02 17:44:14 |
Andrea Righi |
bug task added |
|
linux-signed-hwe (Ubuntu Bionic) |
|
| 2020-03-04 17:06:24 |
Andrea Righi |
description |
happens each time on kernel 5.3.0-40 when I disconnect thunderbolt docking station.
Does *not* happen on 5.3.0-28.
After it happens almost everything still works ok: the only malfunction I've noticed is that after reconnecting the dock, USB devices (mouse, keyboard) connected via the dock don't work at all. However monitor connected via the dock still works fine.
Hardware essentials:
Dell Inc. XPS 13 9360/0D4J15, BIOS 2.13.0
Plugable TBT3-UDV Docking Station
Does not happen when disconnecting "simpler" devices like apple's usb-c to hdmi/usb/usb-c adapter.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-5.3.0-40-generic 5.3.0-40.32~18.04.1
ProcVersionSignature: Ubuntu 5.3.0-40.32~18.04.1-generic 5.3.18
Uname: Linux 5.3.0-40-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.11
Architecture: amd64
Date: Wed Feb 26 05:23:00 2020
InstallationDate: Installed on 2020-01-01 (55 days ago)
InstallationMedia: Ubuntu-MATE 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
ProcEnviron:
LANGUAGE=en_IE:en
TERM=xterm
PATH=(custom, no user)
LANG=en_IE.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install) |
[Impact]
Disconnecting a thunderbolt docking station on a Dell Inc. XPS 13 9360/0D4J15 can cause a general protection fault (with kernel 5.3.0-40 and above).
The bug has been introduced by this upstream commit:
ffe3bcaf02c4 ptp: fix the race between the release of ptp_clock and cdev
Reverting the commit is not a viable option, because we would re-introduce another bug.
The fix is to do something similar to this:
75718584cb3c64e6269109d4d54f888ac5a5fd15 "ptp: free ptp device pin descriptors properly"
and call posix_clock_unregister() in ptp_clock_release(). NOTE: this bug is also present upstream!
In addition to that it seems that we can also trigger a kernel oops with the igb driver if this additional upstream fix is not applied:
94bc1e522b32c866d85b5af0ede55026b585ae73 ("igb/igc: Don't warn on fatal read failures when the device is removed")
[Test case]
Bug reported provided the test case by physically disconnecting the docking station. The problems can be easily reproduced.
[Fix]
Apply upstream commit:
94bc1e522b32c866d85b5af0ede55026b585ae73 ("igb/igc: Don't warn on fatal read failures when the device is removed")
And a custom patch to call call posix_clock_unregister() from ptp_clock_release().
[Regression potential]
About the upstream commit the regression potential is minimal. The other custom fix seems to be pretty straightforward. We may consider to post this upstream and wait for a better feedback from the community.
[Original report]
happens each time on kernel 5.3.0-40 when I disconnect thunderbolt docking station.
Does *not* happen on 5.3.0-28.
After it happens almost everything still works ok: the only malfunction I've noticed is that after reconnecting the dock, USB devices (mouse, keyboard) connected via the dock don't work at all. However monitor connected via the dock still works fine.
Hardware essentials:
Dell Inc. XPS 13 9360/0D4J15, BIOS 2.13.0
Plugable TBT3-UDV Docking Station
Does not happen when disconnecting "simpler" devices like apple's usb-c to hdmi/usb/usb-c adapter.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-5.3.0-40-generic 5.3.0-40.32~18.04.1
ProcVersionSignature: Ubuntu 5.3.0-40.32~18.04.1-generic 5.3.18
Uname: Linux 5.3.0-40-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.11
Architecture: amd64
Date: Wed Feb 26 05:23:00 2020
InstallationDate: Installed on 2020-01-01 (55 days ago)
InstallationMedia: Ubuntu-MATE 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
ProcEnviron:
LANGUAGE=en_IE:en
TERM=xterm
PATH=(custom, no user)
LANG=en_IE.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install) |
|
| 2020-03-04 17:06:42 |
Andrea Righi |
linux-signed-hwe (Ubuntu Bionic): importance |
Undecided |
High |
|
| 2020-03-04 17:06:47 |
Andrea Righi |
linux-signed-hwe (Ubuntu Bionic): assignee |
|
Andrea Righi (arighi) |
|
| 2020-03-04 17:07:24 |
Andrea Righi |
nominated for series |
|
Ubuntu Focal |
|
| 2020-03-04 17:07:24 |
Andrea Righi |
bug task added |
|
linux-signed-hwe (Ubuntu Focal) |
|
| 2020-03-04 17:07:32 |
Andrea Righi |
linux-signed-hwe (Ubuntu Focal): importance |
Medium |
High |
|
| 2020-03-23 07:32:32 |
Piotr Morgwai Kotarbiński |
attachment added |
|
dmesg output with kernel 5.3.0-42.34~18.04.1 https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe/+bug/1864754/+attachment/5340326/+files/dmesg.log |
|
| 2020-03-27 09:58:05 |
Andrea Righi |
description |
[Impact]
Disconnecting a thunderbolt docking station on a Dell Inc. XPS 13 9360/0D4J15 can cause a general protection fault (with kernel 5.3.0-40 and above).
The bug has been introduced by this upstream commit:
ffe3bcaf02c4 ptp: fix the race between the release of ptp_clock and cdev
Reverting the commit is not a viable option, because we would re-introduce another bug.
The fix is to do something similar to this:
75718584cb3c64e6269109d4d54f888ac5a5fd15 "ptp: free ptp device pin descriptors properly"
and call posix_clock_unregister() in ptp_clock_release(). NOTE: this bug is also present upstream!
In addition to that it seems that we can also trigger a kernel oops with the igb driver if this additional upstream fix is not applied:
94bc1e522b32c866d85b5af0ede55026b585ae73 ("igb/igc: Don't warn on fatal read failures when the device is removed")
[Test case]
Bug reported provided the test case by physically disconnecting the docking station. The problems can be easily reproduced.
[Fix]
Apply upstream commit:
94bc1e522b32c866d85b5af0ede55026b585ae73 ("igb/igc: Don't warn on fatal read failures when the device is removed")
And a custom patch to call call posix_clock_unregister() from ptp_clock_release().
[Regression potential]
About the upstream commit the regression potential is minimal. The other custom fix seems to be pretty straightforward. We may consider to post this upstream and wait for a better feedback from the community.
[Original report]
happens each time on kernel 5.3.0-40 when I disconnect thunderbolt docking station.
Does *not* happen on 5.3.0-28.
After it happens almost everything still works ok: the only malfunction I've noticed is that after reconnecting the dock, USB devices (mouse, keyboard) connected via the dock don't work at all. However monitor connected via the dock still works fine.
Hardware essentials:
Dell Inc. XPS 13 9360/0D4J15, BIOS 2.13.0
Plugable TBT3-UDV Docking Station
Does not happen when disconnecting "simpler" devices like apple's usb-c to hdmi/usb/usb-c adapter.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-5.3.0-40-generic 5.3.0-40.32~18.04.1
ProcVersionSignature: Ubuntu 5.3.0-40.32~18.04.1-generic 5.3.18
Uname: Linux 5.3.0-40-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.11
Architecture: amd64
Date: Wed Feb 26 05:23:00 2020
InstallationDate: Installed on 2020-01-01 (55 days ago)
InstallationMedia: Ubuntu-MATE 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
ProcEnviron:
LANGUAGE=en_IE:en
TERM=xterm
PATH=(custom, no user)
LANG=en_IE.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install) |
[Impact]
Disconnecting a thunderbolt docking station on a Dell Inc. XPS 13 9360/0D4J15 can cause a general protection fault (with kernel 5.3.0-40 and above).
The bug has been introduced by this upstream commit:
ffe3bcaf02c4 ptp: fix the race between the release of ptp_clock and cdev
Reverting the commit is not a viable option, because we would re-introduce another bug.
The proper fix is to do something similar to this:
75718584cb3c64e6269109d4d54f888ac5a5fd15 "ptp: free ptp device pin descriptors properly"
and call pps_unregister_source() in ptp_clock_release(). NOTE: this bug is also present upstream.
[Test case]
Bug reported provided the test case by physically disconnecting the docking station. The problems can be easily reproduced and it doesn't seem to happen anymore with the fix applied.
[Fix]
Call call pps_unregister_source() from ptp_clock_release() instead of ptp_clock_unregister().
[Regression potential]
Minimal regression potential, the change is limited to the ptp clock unregistering code path.
[Original report]
happens each time on kernel 5.3.0-40 when I disconnect thunderbolt docking station.
Does *not* happen on 5.3.0-28.
After it happens almost everything still works ok: the only malfunction I've noticed is that after reconnecting the dock, USB devices (mouse, keyboard) connected via the dock don't work at all. However monitor connected via the dock still works fine.
Hardware essentials:
Dell Inc. XPS 13 9360/0D4J15, BIOS 2.13.0
Plugable TBT3-UDV Docking Station
Does not happen when disconnecting "simpler" devices like apple's usb-c to hdmi/usb/usb-c adapter.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-5.3.0-40-generic 5.3.0-40.32~18.04.1
ProcVersionSignature: Ubuntu 5.3.0-40.32~18.04.1-generic 5.3.18
Uname: Linux 5.3.0-40-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.11
Architecture: amd64
Date: Wed Feb 26 05:23:00 2020
InstallationDate: Installed on 2020-01-01 (55 days ago)
InstallationMedia: Ubuntu-MATE 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
ProcEnviron:
LANGUAGE=en_IE:en
TERM=xterm
PATH=(custom, no user)
LANG=en_IE.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install) |
|
| 2020-04-03 13:29:49 |
Stefan Bader |
linux-signed-hwe (Ubuntu Focal): status |
New |
Fix Committed |
|
| 2020-04-06 09:20:19 |
Piotr Morgwai Kotarbiński |
attachment added |
|
dmesg output with kernel 5.3.0-46.38~18.04.1 https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe/+bug/1864754/+attachment/5347602/+files/dmesg-5.3.0-46.38~18.04.1.log |
|
| 2020-04-14 11:12:36 |
Andrea Righi |
bug task added |
|
linux (Ubuntu) |
|
| 2020-04-14 11:12:52 |
Andrea Righi |
linux (Ubuntu Focal): status |
New |
Fix Committed |
|
| 2020-04-14 11:13:18 |
Andrea Righi |
nominated for series |
|
Ubuntu Eoan |
|
| 2020-04-14 11:13:18 |
Andrea Righi |
bug task added |
|
linux (Ubuntu Eoan) |
|
| 2020-04-14 11:13:18 |
Andrea Righi |
bug task added |
|
linux-signed-hwe (Ubuntu Eoan) |
|
| 2020-04-14 11:13:47 |
Andrea Righi |
bug task deleted |
linux-signed-hwe (Ubuntu) |
|
|
| 2020-04-14 11:13:54 |
Andrea Righi |
linux (Ubuntu Eoan): status |
New |
Fix Committed |
|
| 2020-04-14 11:14:00 |
Andrea Righi |
bug task deleted |
linux (Ubuntu Bionic) |
|
|
| 2020-04-14 11:14:17 |
Andrea Righi |
bug task deleted |
linux-signed-hwe (Ubuntu Bionic) |
|
|
| 2020-04-14 11:14:21 |
Andrea Righi |
bug task deleted |
linux-signed-hwe (Ubuntu Eoan) |
|
|
| 2020-04-14 11:14:27 |
Andrea Righi |
bug task deleted |
linux-signed-hwe (Ubuntu Focal) |
|
|
| 2020-04-14 11:14:36 |
Andrea Righi |
linux (Ubuntu Eoan): importance |
Undecided |
Medium |
|
| 2020-04-14 11:14:39 |
Andrea Righi |
linux (Ubuntu Focal): importance |
Undecided |
Medium |
|
| 2020-04-14 11:14:44 |
Andrea Righi |
linux (Ubuntu Eoan): assignee |
|
Andrea Righi (arighi) |
|
| 2020-04-14 11:14:47 |
Andrea Righi |
linux (Ubuntu Focal): assignee |
|
Andrea Righi (arighi) |
|
| 2020-04-16 11:31:32 |
Launchpad Janitor |
linux (Ubuntu Focal): status |
Fix Committed |
Fix Released |
|
| 2020-04-16 11:31:32 |
Launchpad Janitor |
cve linked |
|
2020-11494 |
|
| 2020-05-01 01:21:55 |
Ubuntu Kernel Bot |
tags |
amd64 apport-bug bionic kernel-oops |
amd64 apport-bug bionic kernel-oops verification-needed-eoan |
|
| 2020-05-02 10:58:58 |
Piotr Morgwai Kotarbiński |
tags |
amd64 apport-bug bionic kernel-oops verification-needed-eoan |
amd64 apport-bug bionic kernel-oops verification-done-eoan |
|
| 2020-05-02 11:05:19 |
Piotr Morgwai Kotarbiński |
bug task added |
|
linux-signed-hwe (Ubuntu) |
|
| 2020-05-02 11:07:25 |
Piotr Morgwai Kotarbiński |
linux-signed-hwe (Ubuntu): status |
New |
Fix Committed |
|
| 2020-05-19 21:37:06 |
Launchpad Janitor |
linux (Ubuntu Eoan): status |
Fix Committed |
Fix Released |
|
| 2020-05-19 21:37:06 |
Launchpad Janitor |
cve linked |
|
2020-11608 |
|
