linux-kernel - Linux 4.14: Reported regressions as of Sunday, 2017-10-01

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Date:   Sun, 1 Oct 2017 15:01:35 +0200
From:   Thorsten Leemhuis <regressions@...mhuis.info>
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc:     linuxppc-dev@...ts.ozlabs.org, Jonathan Corbet <corbet@....net>
Subject: Linux 4.14: Reported regressions as of Sunday, 2017-10-01

Hi! Find below my first regression report for Linux 4.14. It lists 4
regressions I'm currently aware of (two of the reports are my own). I
skimmed LKML, bugzilla.kernel.org, but those were all I found that
looked worthy. And nobody pointed me to any regressions directly. Sigh.
Either we are doing really well this cycle or nobody wants his
regression tracked...

As always: Are you aware of any other regressions? Then please let me
know by mail (a simple bounce in my direction is enough!). For details
see http://bit.ly/lnxregtrackid And please tell me if there is anything
in the report that shouldn't be there.

Ciao, Thorsten

== Current regressions ==

Module removal-related regression
Status: Fix "driver core: suppress sending MODALIAS in UNBIND uevents"
is sitting in greg's driver-core-linus
Reported: 2017-09-09
https://marc.info/?l=linux-kernel&m=150497889508778
Cause: 1455cf8dbfd06aa7651dcfccbadb7a093944ca65

stalls, short lived or long lived lockups very shortly after boot.
Status: Nothing new since 10+ days; maybe fixed already? poked list for
a status update
Reported: 2017-09-19
https://marc.info/?l=linux-kernel&m=150583434416295
Cause: 74def747bcd0

CIFS SMB2+ combined with pythons xattr.listxattr leads to "IOError:
[Errno 61]"
Status: no reaction from developers yet; need to poke list again
Note: Disclaimer: A regression the regression tracker reported
Reported: 2017-09-26
https://marc.info/?l=linux-cifs&m=150644485708526
Cause: 8dc5b3a6cb2f (assumed)

Ath10k disconnects
Status: brand new, might turn out to be a false alarm
Note: Disclaimer: A regression the regression tracker reported
Reported: 2017-10-01
http://lists.infradead.org/pipermail/ath10k/2017-October/010189.html

== Reported, but not added to the report for one reason or another ==

New default s2idle does not work on Dell XPS 13 9360
Status: Might be fixed, asked for a status update.
https://bugzilla.kernel.org/show_bug.cgi?id=196907

dd1c1f2f20: will-it-scale.per_process_ops -5% regression
Status: Linus: "Sadly, while I love the concept of performance tracking,
the "will-it-scale" reports haven't really been reliable enough to
really be useful." https://lkml.org/lkml/2017/9/3/103
https://marc.info/?l=linux-kernel&m=150457748221543

52306e882f: stress-ng.lockofd.ops_per_sec -11% regression
Status: see above
https://marc.info/?l=linux-kernel&m=150658588810343

9e52fc2b50:  will-it-scale.per_thread_ops -16% regression
Status: see above; but there was some discussion about this here, so
maybe it should be on the list
https://marc.info/?l=linux-kernel&m=150649209519462