[Bug 216422] New: BUG: kernel NULL pointer dereference, address: 0000000000000000

[Bug 216422] New: BUG: kernel NULL pointer dereference, address: 0000000000000000

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=216422

            Bug ID: 216422
           Summary: BUG: kernel NULL pointer dereference, address:
                    0000000000000000
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.18.0-rc1-1-00059-g87d0e2f41b8c
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: USB
          Assignee: drivers_usb@kernel-bugs.kernel.org
          Reporter: kernel-bugzilla@janbruckner.de
        Regression: No

Created attachment 301686
  --> https://bugzilla.kernel.org/attachment.cgi?id=301686&action=edit
dmesg with NULL pointer dereferences.

Hi,

Several users including me are experiencing an issue with Thinkpads becoming
completely unresponsive after several hours. This seems to happen more often
shortly after the system has been idle for some time.
The issue only occurs when the Thinkpad is already connected to a USB C docking
station before booting.

dmesg shows regular
"BUG: kernel NULL pointer dereference, address: 0000000000000000"
that do not cause a crash however.
These only show up, when the systemd upower.service is running.

In the attached dmesg.txt, I booted with upower.service disabled and started it
manually which immediately lead to the NULL pointer dereference (but no crash).

We bisected and found the offending commit in
https://bbs.archlinux.org/viewtopic.php?id=279027

Please see the attached bisect-log.txt .

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[Bug 216422] BUG: kernel NULL pointer dereference, address: 0000000000000000

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=216422

--- Comment #1 from Jan (kernel-bugzilla@janbruckner.de) ---
Created attachment 301687
  --> https://bugzilla.kernel.org/attachment.cgi?id=301687&action=edit
bisect log

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[Bug 216422] BUG: kernel NULL pointer dereference, address: 0000000000000000

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=216422

Eric Haynes (ehaynes99@protonmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ehaynes99@protonmail.com

--- Comment #2 from Eric Haynes (ehaynes99@protonmail.com) ---
I am also experiencing this. I'm not sure if modern docking stations are more
than just a USB C hub, but in case it matters, I have an external monitor and a
keyboard connected via USB C but do not own a docking station.

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[Bug 216422] BUG: kernel NULL pointer dereference, address: 0000000000000000

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=216422

The Linux kernel's regression tracker (Thorsten Leemhuis) (regressions@leemhuis.info) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |regressions@leemhuis.info,
                   |                            |tiwai@suse.de

--- Comment #3 from The Linux kernel's regression tracker (Thorsten Leemhuis) (regressions@leemhuis.info) ---
Thx for the bisect. That commits is known to cause some trouble. See this
thread:
https://lore.kernel.org/all/87r11cmbx0.wl-tiwai@suse.de/

A fix for that problem is heading towards mainline currently:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=master&id=5f73aa2cf8bef4a39baa1591c3144ede4788826e

Might be worth giving it a shot.

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[Bug 216422] BUG: kernel NULL pointer dereference, address: 0000000000000000

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=216422

Artem S. Tashkinov (aros@gmx.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aros@gmx.com

--- Comment #4 from Artem S. Tashkinov (aros@gmx.com) ---
Is this still an issue in 6.7.9 or 6.8?

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