[Bug 219519] New: Hibernation Failure on 6.11+ due to btusb

[Bug 219519] New: Hibernation Failure on 6.11+ due to btusb

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=219519

            Bug ID: 219519
           Summary: Hibernation Failure on 6.11+ due to btusb
           Product: Drivers
           Version: 2.5
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Bluetooth
          Assignee: linux-bluetooth@vger.kernel.org
          Reporter: lkml@antheas.dev
        Regression: No

Created attachment 307262
  --> https://bugzilla.kernel.org/attachment.cgi?id=307262&action=edit
Stack trace after resume

On an ASUS ROG Ally X (and possibly Legion Go) and a kernel of 6.11+, if
Bluetooth is enabled, hibernation will fail on resume with RIP
__list_del_entry_valid_or_report.cold.

This is under the function hci_unregister_dev

6.10 appears to work however. See the stack trace below. It is from a tainted
6.11 kernel, but the same issue occurs on 6.12.0 and 6.11.y

Bisection between 6.10 and 6.11 made some kernels that could not boot, so I
could not finish it. I also tried reverting "Fix not handling hibernation
actions" and "Bluetooth: btusb: Don't fail external suspend requests"
completely which did not help

The following lines were used to produce the trace:
```
sudo chvt 2
echo N | sudo tee /sys/module/printk/parameters/console_suspend
echo devices | sudo tee /sys/power/pm_test
echo disk | sudo tee /sys/power/state
```

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[Bug 219519] Hibernation Failure on 6.11+ due to btusb

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=219519

Antheas Kapenekakis (lkml@antheas.dev) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|                            |6.11+

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[Bug 219519] Hibernation Failure on 6.11+ due to btusb

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=219519

Antheas Kapenekakis (lkml@antheas.dev) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Bisected commit-id|                            |ceac1cb0259de682d78f5c784ef
                   |                            |8e0b13022e9d9
         Regression|No                          |Yes

--- Comment #1 from Antheas Kapenekakis (lkml@antheas.dev) ---
I think it is commit ceac1cb0259de682d78f5c784ef8e0b13022e9d9. The way i
bisected the kernel was a bit unclean. So I will try to do a clean revert in a
few hours.

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[Bug 219519] Hibernation Failure on 6.11+ due to btusb

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=219519

--- Comment #2 from Antheas Kapenekakis (lkml@antheas.dev) ---
Created attachment 307265
  --> https://bugzilla.kernel.org/attachment.cgi?id=307265&action=edit
Revert patch

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[Bug 219519] Hibernation Failure on 6.11+ due to btusb

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=219519

--- Comment #3 from Antheas Kapenekakis (lkml@antheas.dev) ---
Reverting commits ceac1cb0259de682d78f5c784ef8e0b13022e9d9 and
d09009bc80d9d0d812b988888c40cd86e52eaf1e seems to fix the issue (later is
required to revert former).

I will do more testing later. I tried to look through the patch to see what
could be causing it but I cannot.

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