linux-kernel - Manual Linux regressions report for mainline [2022-09-30]

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Date:   Fri, 30 Sep 2022 13:44:48 +0200
From:   Thorsten Leemhuis <regressions@...mhuis.info>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     "regressions@...ts.linux.dev" <regressions@...ts.linux.dev>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Manual Linux regressions report for mainline [2022-09-30]

Hi Linus! A quick manual regression report because we're close to the
end of this devel cycle:

Graphical issues on Lenovo Yoga 7 14ARB7 laptop since v6.0-rc1
--------------------------------------------------------------
https://lore.kernel.org/lkml/c1f8886a-5624-8f49-31b1-e42b6d20dcf5@augustwikerfors.se/

Unlikely to hit many people afaics. A fix is posted and somewhat
reviewed, but not yet merged by the maintainers afaics:
https://lore.kernel.org/amd-gfx/20220928172726.128863-1-sunpeng.li@amd.com/

arm64 / rock960 : kernel panic (NULL pointer dereference)
---------------------------------------------------------
https://lore.kernel.org/lkml/4f398e4c-973b-7843-2f75-27324d109277@linaro.org/

A fix for that one is in next and might be heading your way:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=master&id=f340ed8664a55a467850ec1689996e63d9ee971a

qemu/KVM boot failures after commit 'iomap: add support for dma aligned
direct-io'
---------------------------------------------------------------------
https://lore.kernel.org/all/fb869c88bd48ea9018e1cc349918aa7cdd524931.camel@redhat.com/

Reported yesterday, caused by bf8d08532bc1. A kernel change exposed a
bug in Qemu:
https://lore.kernel.org/all/32db4f89-a83f-aac4-5d27-0801bdca60bf@redhat.com/

I wonder if that commit should be reverted for now.

efi_pstore and ramoops backends are unable to properly decompress dmesg
sometimes
-----------------------------------------------------------------------
https://lore.kernel.org/all/20220929215515.276486-1-gpiccoli@igalia.com/

Reported in the past 24 hours, includes a revert. Kees wasn't able to
reproduce the problem. Guess developers will look into this today.

system hangs on Flatcar Container Linux
---------------------------------------
https://lore.kernel.org/all/c77bf00f-4618-7149-56f1-b8d1664b9d07@linux.microsoft.com/

Reported two days ago against stable (and thus not strictly a mainline
regression), where it's caused by a backport of 51ae846cff5 (merged this
cycle). The latter had also triggered a syzbot problem earlier (see
thread). Investigation ongoing.

---
That's all I'm aware of, HTH, Thorsten