Linux 4.8: Reported regressions as of Sunday, 2016-09-11

Thorsten Leemhuis regressions at leemhuis.info
Sun Sep 11 23:57:31 AEST 2016


Hi! Here is my third regression report for Linux 4.8. It lists 10
regressions I'm aware of. 6 of them are new; 3 mentioned in the last
report sent two weeks ago got fixed; 3 got removed for other reasons
(see below).

As always: Are you aware of any other regressions? Then please let me
know (simply CC regressions at leemhuis.info). And tell me if there is
anything in the report that shouldn't be there.

Ciao, Thorsten

P.S.: Sorry for not sending a report last week, I did not find the time
as I was travelling :-/


== Current regressions ==

Desc: genirq: Flags mismatch irq 8, 00000088 (mmc0) vs. 00000080 (rtc0). mmc0: Failed to request irq 8: -16
Repo: 2016-08-01 https://bugzilla.kernel.org/show_bug.cgi?id=150881
Stat: 2016-09-09 https://bugzilla.kernel.org/show_bug.cgi?id=150881#c34
Note: root cause somewhere in the main gpio merge for 4.8, but problematic commit still unknown

Desc: [lkp] [xfs] 68a9f5e700: aim7.jobs-per-min -13.6% regression
Repo: 2016-08-09 http://www.spinics.net/lists/kernel/msg2317052.html
Stat: 2016-09-09 https://marc.info/?t=147341519500003&r=1&w=2
Note: Mel working on it in his spare time, but "The progression of this series has been unsatisfactory."

Desc: DT/OCTEON driver probing broken
Repo: 2016-08-16 http://www.spinics.net/lists/devicetree/msg138990.html
Stat: 2016-08-30 http://www.spinics.net/lists/devicetree/msg140682.html
Note: stalled, poked Rob

Desc: gpio-leds broken on OCTEON
Repo: 2016-08-23 http://www.spinics.net/lists/devicetree/msg139863.html
Stat: 2016-08-25 http://www.spinics.net/lists/devicetree/msg140179.html
Note: stalled, poked list

Desc: Skylake graphics regression: projector failure with 4.8-rc3
Repo: 2016-08-26 http://www.spinics.net/lists/intel-gfx/msg105478.html
Stat: 2016-09-01 https://lkml.org/lkml/2016/8/31/946
Note: looks a bit stalled, but guess jejb still has not forgotten about it

Desc: lk 4.8 + !CONFIG_SHMEM + shmat() = oops
Repo: 2016-08-30 http://www.spinics.net/lists/linux-mm/msg112920.html
Stat: 2016-09-07 http://www.spinics.net/lists/linux-mm/msg113177.html
Note: patch "ipc/shm: fix crash if CONFIG_SHMEM is not set" is going to fix this

Desc: ath9k: bring back direction setting in ath9k_{start_stop}
Repo: 2016-09-01 https://marc.info/?l=linux-wireless&m=147292415030585&w=2
Stat: 2016-09-07 https://marc.info/?l=linux-wireless&m=147325468810927&w=2
Note: fix heading upstream

Desc: regression in re-read operation by iozone ~10%
Repo: 2016-09-02 https://bugzilla.kernel.org/show_bug.cgi?id=155821
Stat: n/a 
Note: told reporter he might be better of posting about the issue to some mailing list

Desc: Suspend fails & system is unusable after attempt (Dell XPS 13 9350 / Skylake)
Repo: 2016-09-08 https://bugzilla.kernel.org/show_bug.cgi?id=156361
Stat: n/a 
Note: quite new

Desc: CPU speed set very low
Repo: 2016-09-09 https://lkml.org/lkml/2016/9/9/608
Stat: n/a 
Note: quite new

== Going to be removed from the list ==

Desc: [lkp] [mm, page_alloc] e6cbd7f2ef: pixz.throughput -5.1% regression due to mm, page_alloc: remove fair zone allocation policy
Repo: 2016-08-08 https://marc.info/?l=linux-kernel&m=147064515210332&w=3
Stat: 2016-08-30 https://lkml.org/lkml/2016/8/30/176
Note: Quoting Mel: Drop it for the moment. My expectation is that it's a relatively minor hazard. […]

Desc: Intermittent crash on reboot (acpi_ex_system_reset_event)
Repo: 2016-08-04 https://bugzilla.kernel.org/show_bug.cgi?id=151441
Stat: 2016-08-15 https://bugzilla.kernel.org/show_bug.cgi?id=151441#c7
Note: reporter stopped seeing this crash

Desc: Commit cb4f71c429 deliberately changes order of network interfaces
Repo: 2016-08-21 http://www.spinics.net/lists/kernel/msg2325600.html
Stat: n/a 
Note: long discussion if this is considered a regression at all; mentioned it in the last report to make sure people are aware of the issue; nothing happened since then, so I assume people do not consider it a regression


== Fixed since last report ==

Desc: irqdomain: Don't set type when mapping an IRQ breaks nexus7 gpio buttons
Repo: 2016-07-30 https://marc.info/?l=linux-kernel&m=146985356305280&w=2
Fix:  https://git.kernel.org/torvalds/c/1e12c4a9393b75a744aada2c8115434572698bc3

Desc: imx-drm: Possible regression after update to atomic: black screen after Weston starts
Repo: 2016-08-13 http://www.spinics.net/lists/kernel/msg2320013.html
Fix:  https://git.kernel.org/torvalds/c/c6c1f9bc798bee7cfc2e172cd2c9b48187d801a7

Desc: Bluetooth: Fix bt_sock_recvmsg when MSG_TRUNC is not set
Repo: 2016-08-25 http://www.spinics.net/lists/linux-bluetooth/msg68012.html
Fix:  https://git.kernel.org/torvalds/c/90a56f72edb088c678083c32d05936c7c8d9a948



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