linux-kernel - A quick small additional regressions report pre -rc8/final

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Date:   Fri, 23 Jun 2023 19:29:50 +0200
From:   Thorsten Leemhuis <regressions@...mhuis.info>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Linux kernel regressions list <regressions@...ts.linux.dev>,
        LKML <linux-kernel@...r.kernel.org>
Subject: A quick small additional regressions report pre -rc8/final

Hi Linus, here is a quick manual report about regressions introduced
this cycle that I'm aware of and are currently unresolved afaik:


 * kernel test robot noticed a -20.0% regression of
vm-scalability.throughput post -rc7; Mike posted reverts akpm applied
that landed in next recently:

https://lore.kernel.org/lkml/202306211346.1e9ff03e-oliver.sang@intel.com/
https://lore.kernel.org/lkml/20230621212403.174710-1-mike.kravetz@oracle.com/


 * Swapnil Sapkal from AMD found another performance regression; from
skimming the thread it seems a partial fix is in -next for some time
already; part of the problem is also caused by df323337e50 "apparmor:
Use a memory pool instead per-CPU caches" [v5.5-rc1]

https://lore.kernel.org/lkml/09e0f469-a3f7-62ef-75a1-e64cec2dcfc5@amd.com/
https://lore.kernel.org/lkml/20230515143536.114960-1-mathieu.desnoyers@efficios.com/
https://lore.kernel.org/lkml/6c693e3b-b941-9acf-6821-179e7a7fe2b8@efficios.com/

[this one is not tracked by regzbot, something went sideways, need to
look closer]


 * Mario came up with a fix for the ppc/tpm kexec hang recently reported:

https://lore.kernel.org/lkml/99B81401-DB46-49B9-B321-CF832B50CAC3@linux.ibm.com/
https://lore.kernel.org/all/20230623030427.908-1-mario.limonciello@amd.com/


 * still no solution in sight for the "Dragonboard 845c broken due to
asynchronous probe" regression

https://lore.kernel.org/lkml/CAMi1Hd1avQDcDQf137m2auz2znov4XL8YGrLZsw5edb-NtRJRw@mail.gmail.com/
https://lore.kernel.org/lkml/20230515145323.1693044-1-amit.pundir@linaro.org/
https://lore.kernel.org/lkml/20230602161246.1855448-1-amit.pundir@linaro.org/


 * no progress wrt to the MPTCP tests regressions due to 9p changes

https://lore.kernel.org/regressions/855a232a-76d3-7e7b-b2b5-2ebc41bcadd6@tessares.net/


 * brand new: transmit queue timeouts with r8169 due to 2ab19de62d6
("r8169: remove ASPM restrictions now that ASPM is disabled during NAPI
poll") [v6.4-rc1]

https://lore.kernel.org/netdev/c3465166-f04d-fcf5-d284-57357abb3f99@freenet.de/


 * just noticed: patches for a "WiFi / LTE won't work at all on trogdor
devices" regression might still be heading your way:

https://lore.kernel.org/lkml/20230616081440.v2.1.Ie79b5f0ed45739695c9970df121e11d724909157@changeid/


HTH, Ciao, Thorsten