Re: [PATCH v6 2/8] hugetlb: restructure pool allocations

[Konrad Dybcio <konrad.dybcio@linaro.org>]

On 10/10/23 23:45, Mike Kravetz wrote:
> On 10/10/23 23:30, Konrad Dybcio wrote:
>>
>>
>> On 10/10/23 02:07, Andrew Morton wrote:
>>> On Mon, 9 Oct 2023 08:15:13 -0700 Mike Kravetz <mike.kravetz@oracle.com> wrote:
>>>
>>>>> This should also be empty and a noop.
>>>>>
>>>>> Is it possible that the misaligned kernel image could make these lists
>>>>> appear as non-empty?
>>>>
>>>> Actually, just saw this:
>>>>
>>>> https://lore.kernel.org/linux-mm/20231009145605.2150897-1-usama.arif@bytedance.com/
>>>>
>>>> Will take a look, although as mentioned above prep_and_add_bootmem_folios on
>>>> an empty list should be a noop.
>>>
>>> Konrad, are you able to test Usama's patch?  Thanks.
>> I legitimately spent a sad amount of time trying to regain access to the
>> remote board farm. Previously I could hit the bug on SM8550, but now I can't
>> do it on SM8450, SM8350 and SM8250 (previous gens), with the same config.. I
>> have no idea when I'll be able to get access to SM8550 again.
>>
>> I did test it on the QCM6490 Fairphone 5 that I initially reported this on,
>> and neither booting next-20231010 (with your patchset applied) nor adding
>> the below patch on top of it seems to work. I can't get serial output from
>> this device though to find out what it's unhappy about :/
> 
> Sorry for causing you to spend so much time on this.
No worries, that was my explanation for why it took me so long to 
respond again..

> 
> As mentioned in the reply to Usama's patch, the root cause seems to be
> the locking.  So, the real change to test is the locking changes in
> that thread; not Usama's patch.
Ack

Konrad