[Bug 172271] WARNING: CPU: 1 PID: 274 at drivers/base/firmware_class.c:1124 _request_firmware+0x465/0xaf0

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https://bugzilla.kernel.org/show_bug.cgi?id=172271

--- Comment #5 from Kai-Heng Feng (kai.heng.feng@xxxxxxxxxxxxx) ---
(In reply to chr() from comment #4)
> (In reply to Kai-Heng Feng from comment #3)
> > Please give these two patch series a try:
> > 
> > https://lkml.org/lkml/2017/8/22/123
> > https://lkml.org/lkml/2017/8/25/58
> 
> Hi,
> 
> thanks for the work.
> 
> I applied these patches on 4.9.50. The machine locks up on the way to
> suspend :(

The patches should apply to mainline. I didn't test it on 4.9.

> 
> Actually I was hardly able to reproduce this issue as easy as before, even
> with the 4.9.46.
> It should be noted there was an update of the bluez package meanwhile
> ("BlueBorne" flaw).

This is a kernel bug, it shouldn't have anything to do with BlueZ.

> 
> As long the firmware loading happens after "Restarting tasks ... done" we're
> fine but still there is a chance to brick the machine on resume (1 of 20
> tries).

Probably try it on top of mainline?

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