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Date:   Sun, 15 Oct 2017 14:55:24 +0200
From:   Thorsten Leemhuis <>
To:     Linus Torvalds <>,
        Linux Kernel Mailing List <>
Cc:, Jonathan Corbet <>
Subject: Linux 4.14: Reported regressions as of Sunday, 2017-10-15

Hi! Find below my third regression report for Linux 4.14. It lists 9
regressions I'm currently aware of. Two regressions got fixed since last
weeks report.

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

Ciao, Thorsten

== Current regressions ==

New default s2idle does not work on Dell XPS 13 9360 with hynix 512GB
Status: works fine on several other owners of this laptop;  appears to
be related to NVMe(and specifically to the particular Hynix 512G NVMe
SSD in that machine)
Note: this seems to be a regression in 4.13 that is exposed by a change
in 4.14; judge yourself if this should be in the list or not
Reported: 2017-09-11
Cause: e870c6c87cf9484090d28f2a68aa29e008960c93 (assumed)

CIFS SMB2+ combined with pythons xattr.listxattr leads to "IOError:
[Errno 61
Status: no reaction from developers yet; reporter too lazy, he still
needs to reverify and poke list
Note: Disclaimer: A regression the regression tracker reported
Reported: 2017-09-26
Cause: 8dc5b3a6cb2f (assumed)

Ath10k disconnects
Status: no progress in the last week; will poke on Monday
Note: Only happens with some wifi routers; Disclaimer: A regression the
regression tracker reported
Reported: 2017-10-01
Cause: c9353bf483d3724c116a9d502c0ead9cec54a61a

Oops in nouveau_fbcon_set_suspend_work during boot or resume on some
Status: Three people see this now; one is considering a bisection
Reported: 2017-10-02

networking doesn't work in opensuse 42.2 due to apparmor: add base
infastructure for socket mediation
Status: stalled: after the reported by James there was a debate if this
is a regression or not that in the end faded out
Note: Maybe this should be removed from the list
Reported: 2017-10-03
Cause: 651e28c5537abb39076d3949fb7618536f1d242e

WiFi stopped working with 4.14 (two report: a staging driver and iwlwifi)
Status: told reporters a week ago they better should bring this to
netdev; didn't happen afaics
Note: maybe these are two different issues; one with rtl8723bs
(Staging!) and one where with 8265 that is related to switching BT on
and off
Reported: 2017-10-05

Dramatic lockdep slowdown in 4.14
Status: WIP
Note: "Now since it's lockdep I guess this can't really be considered a
regression if these changes did improve lockdep correctness, but still,
this dramatic slow down essentially forces me to disable PROVE_LOCKING
by default on this system."
Reported: 2017-10-13
Cause: 28a903f63ec0

Hikey620: it's easy to trigger a panic with "rcu_preempt detected stalls
on CPUs/tasks"
Status: WIP
Cause: e3067861ba66

On first generation i486 processors it immediately resets the system
after the "Booting the kernel" message.
Status: brand new
Cause: 87e81786b13b267c4355e0d23e33c7e4c08fa63f

== Fixed since last report ==

"hangs when building e.g. perf" & "Random insta-reboots on AMD Phenom II"
Status: Fixed by
Reported: 2017-09-05
Cause: 94b1b03b519b81c494900cb112aa00ed205cc2d9

nftables oops with 4.14.0-rc3 on arm64 (Rock64 board)
Status: Fixed by
Reported: 2017-10-04
Cause: 9f08ea848117

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