Re: Regression: QCA6390 fails with "mm/page_alloc: place pages to tail in __free_pages_core()"

From: Pavel Procopiuc
Date: Thu Nov 05 2020 - 04:47:55 EST


Op 05.11.2020 om 10:04 schreef Kalle Valo:
Oh, very interesting. Thanks a lot for the bisection, otherwise we would
have never found out whats causing this.

David & mm folks: Pavel noticed that his QCA6390 Wi-Fi 6 device (driver
ath11k) failed on v5.10-rc1. After bisecting he found that the commit
below causes the regression. I have not been able to reproduce this and
for me QCA6390 works fine. I don't know if this needs a specific kernel
configuration or what's the difference between our setups.

Any ideas what might cause this and how to fix it?

Full discussion: http://lists.infradead.org/pipermail/ath11k/2020-November/000501.html

commit 7fef431be9c9ac255838a9578331567b9dba4477
Author: David Hildenbrand <david@xxxxxxxxxx>
AuthorDate: Thu Oct 15 20:09:35 2020 -0700
Commit: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
CommitDate: Fri Oct 16 11:11:18 2020 -0700

mm/page_alloc: place pages to tail in __free_pages_core()

This is my kernel config, for the reference: https://gist.github.com/twistedfall/455885024c56587fc5a0f4b2784612e8