[Bug 217242] CPU hard lockup related to xhci/dma

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=217242

--- Comment #30 from Austin Domino (austin.domino@hotmail.com) ---
(In reply to Hunter M from comment #29)
> 12 computers have been running since 04-19-2023 with no CPU lockups using
> the patches. TRB values constant at 512. 
> The only thing I have seen on 2 of the computers is a warning log for the
> following:
> 
> Apr 21 07:47:37 myuser kernel: xhci_hid 0000:00:14.0: WARN Set TR Deq Ptr
> cmd failed due to incorrect slot or ep state.

Hunter, I've seen the same warning in logs for computers running kernel 6.1 and
6.2 before and after these patches were applied.  Also, it appears that there's
already a bug report put together for this warning (see bug w/ id 202541).

Also, since I'm writing a quick comment, I'll give an update on testing the
kernel with these patches applied.  I haven't had any problems so far on any
computer running kernel 5.15, 6.1 or 6.2 with these patches applied over the
past 6 days, and the number of TRBs has remained at 512 on all 5 computers. 
I'm becoming more and more certain as they days go by that these patches fix
this bug, and I'm okay with running a patched kernel for the time being.

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