Linux 4.7: Reported regressions as of Sunday, 2016-06-26

From: Thorsten Leemhuis
Date: Sun Jun 26 2016 - 10:01:56 EST

Hi! Here is my third regression report for Linux 4.7. It has
24 entries; 9 of them are new; 4 regressions (not included here)
were fixed since the last report(Â).

Please let me know if a regression is missing in the list; or if
there is something on the list which shouldn't be there.

HTH, CU, Thorsten

(Â) previous reports can be found at
http://thread.gmane.org/gmane.linux.kernel/2241805
http://thread.gmane.org/gmane.linux.kernel/2247804

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Description: ath10k no longer authenticates and freezes system
Report: https://bugzilla.kernel.org/show_bug.cgi?id=119151
Latest status: https://bugzilla.kernel.org/show_bug.cgi?id=119151#c12
Date rep/stat: 2016-05-27 / 2016-06-20
Notes: fix heading towards mainline

Description: Bad flicker on skylake HQD due to code in the 4.7 merge window
Report: http://thread.gmane.org/gmane.linux.kernel/2230377
Latest status: http://thread.gmane.org/gmane.linux.kernel/2230377/focus=158274
Date rep/stat: 2016-05-30 / 2016-06-23
Notes: commit that introduced regression was found

Description: we noticed reaim.jobs_per_min -49.1% regression
Report: http://thread.gmane.org/gmane.linux.kernel/2231025/
Latest status: http://thread.gmane.org/gmane.linux.kernel/2231025/focus=2233571
Date rep/stat: 2016-05-31 / 2016-06-13
Notes: poked Al is this is going to fix it http://article.gmane.org/gmane.linux.kernel/2241911

Description: NULL pointer dereference with BCM4350 wireless device
Report: https://bugzilla.kernel.org/show_bug.cgi?id=119451
Latest status: https://bugzilla.kernel.org/show_bug.cgi?id=119451#c3
Date rep/stat: 2016-06-01 / 2016-06-07
Notes: reporter hasn't confirmed yet, but likely fixed in mainline by https://git.kernel.org/torvalds/c/31143e2933

Description: 795ae7a0de: pixz.throughput -9.1% regression
Report: http://thread.gmane.org/gmane.linux.kernel/2233056/
Latest status: http://thread.gmane.org/gmane.linux.kernel/2233056/focus=2251134
Date rep/stat: 2016-06-02 / 2016-06-22
Notes: hannes can't still reproduce

Description: RadeonSI get a huge performance dip with used with the nine state tracker
Report: https://bugzilla.kernel.org/show_bug.cgi?id=119631
Latest status: https://bugzilla.kernel.org/show_bug.cgi?id=119631#c14
Date rep/stat: 2016-06-04 / 2016-06-20
Notes: patch to mostly fix regression under discussion

Description: Regression in kbuild: fix if_change and friends to consider argument
Report: http://thread.gmane.org/gmane.linux.kbuild.devel/14981/
Latest status: http://thread.gmane.org/gmane.linux.kbuild.devel/14981/focus=15000
Date rep/stat: 2016-06-07 / 2016-06-09
Notes: poked Michal

Description: BUG: using smp_processor_id() in preemptible [00000000] code] when using a USB Mass Storage device
Report: http://thread.gmane.org/gmane.linux.usb.general/143504
Latest status: http://thread.gmane.org/gmane.linux.usb.general/143504/focus=153154 https://lkml.org/lkml/2016/6/15/397
Date rep/stat: 2016-06-09 / 2016-06-15
Notes: poked Joerg

Description: Notebook Clevo N350DW i5-6500T freezes on shutdown (but reboots fine)
Report: https://bugzilla.kernel.org/show_bug.cgi?id=119871
Latest status: https://bugzilla.kernel.org/show_bug.cgi?id=119871#c9
Date rep/stat: 2016-06-09 / 2016-06-25
Notes: poked Rafael via bugzilla; two (or three?) people see this now

Description: BUG: unable to handle kernel NULL pointer dereference [â] qla24xx_process_response_queue+0x49/0x4b0 [qla2xxx]
Report: https://bugzilla.kernel.org/show_bug.cgi?id=120201
Latest status: http://thread.gmane.org/gmane.linux.kernel/2247804/focus=2252004
Date rep/stat: 2016-06-14 / 2016-06-23
Notes: wip

Description: Performance drop 30-40% for SPECjbb2005 and SPECjvm2008 benchmarks
Report: https://bugzilla.kernel.org/show_bug.cgi?id=120481
Latest status: https://bugzilla.kernel.org/show_bug.cgi?id=120481#c15 http://thread.gmane.org/gmane.linux.kernel/2245977/focus=2253079
Date rep/stat: 2016-06-16 / 2016-06-24
Notes: peterz is looing into it

Description: performance drop on SFC interface around 30 %
Report: https://bugzilla.kernel.org/show_bug.cgi?id=120461
Latest status: https://bugzilla.kernel.org/show_bug.cgi?id=120461#c12
Date rep/stat: 2016-06-17 / 2016-06-21
Notes: wip

Description: System hang when plug/un-plug USB 3.1 key via thunderbolt port on Dell XPS 13
Report: https://bugzilla.kernel.org/show_bug.cgi?id=120241
Latest status: https://bugzilla.kernel.org/show_bug.cgi?id=120241#c7
Date rep/stat: 2016-06-14 / 2016-06-24
Notes: wip

Description: lk 4.7 regression: EDAC, amd64_edac: Drop pci_register_driver() use
Report: http://thread.gmane.org/gmane.linux.kernel/2245115/
Latest status: http://thread.gmane.org/gmane.linux.kernel/2246008/focus=2246009
Date rep/stat: 2016-06-15 / 2016-06-16
Notes: poke Boris if the fix doesn't make it to mainline in hte next few days

Description: regression in 8250 uart driver
Report: http://thread.gmane.org/gmane.linux.kernel/2243130/focus=2243653
Latest status: http://thread.gmane.org/gmane.linux.kernel/2243130/focus=2243653
Date rep/stat: 2016-06-14 / 2016-06-14
Notes: wip, fix available

Description: http://thread.gmane.org/gmane.linux.kernel/2231928
Report: http://thread.gmane.org/gmane.linux.kernel/2231928
Latest status: http://thread.gmane.org/gmane.linux.kernel/2231928/focus=2233380 http://thread.gmane.org/gmane.linux.kernel/2231928/focus=75622
Date rep/stat: 2016-06-01 / 2016-06-14
Notes: asked for status-update

Description: Crash in XFS
Report: http://thread.gmane.org/gmane.comp.file-systems.xfs.general/75541/
Latest status: http://thread.gmane.org/gmane.comp.file-systems.xfs.general/75541/focus=76042
Date rep/stat: 2016-06-08 / 2016-06-22
Notes: waiting for reporter; issue related to the one below?

Description: Rename file corruption due to VFS-Changes?
Report: http://thread.gmane.org/gmane.linux.kernel/2245402/
Latest status: http://thread.gmane.org/gmane.linux.kernel/2245402/focus=2250254
Date rep/stat: 2016-06-16 / 2016-06-22
Notes: waiting for reporter; issue related to the one above?

Description: 4.7-rc1 oops at drm_connector_cleanup+0x5c/0x1d0
Report: http://thread.gmane.org/gmane.comp.video.dri.devel/155784/
Latest status: http://thread.gmane.org/gmane.comp.video.dri.devel/155784/focus=157094 https://bugs.freedesktop.org/show_bug.cgi?id=96532
Date rep/stat: 2016-06-02 / 2016-06-10
Notes: bisected, possible revert cofirmed to fix issue, but no reaction from the relevant developers after three weeks :-/ CCed nouveau developers, maybe it will help

Description: UBSAN splat in drivers/acpi/acpica/dsutils.c:641:16
Report: https://bugzilla.kernel.org/show_bug.cgi?id=120351
Latest status: https://bugzilla.kernel.org/show_bug.cgi?id=120411#c3
Date rep/stat: 2016-06-15 / 2016-06-22
Notes: related: https://bugzilla.kernel.org/show_bug.cgi?id=120411 https://bugzilla.kernel.org/show_bug.cgi?id=120391 https://bugzilla.kernel.org/show_bug.cgi?id=120371 https://bugzilla.kernel.org/show_bug.cgi?id=120361 https://bugzilla.kernel.org/show_bug.cgi?id=120351

Description: In an idle system, wakeups/s (reported by powertop)is increased a lot
Report: http://thread.gmane.org/gmane.linux.power-management.general/77619/
Latest status: http://thread.gmane.org/gmane.linux.power-management.general/77619/focus=78039
Date rep/stat: 2016-06-17 / 2016-06-25
Notes: wip, fix discussed

Description: vm-scalability regression in cgroup-aware workingset code
Report: http://thread.gmane.org/gmane.linux.kernel.mm/153799/
Latest status: n/a
Date rep/stat: 2016-06-21 /
Notes: wip

Description: sound disappeared, ACPI/PCI/IRQ related
Report: http://thread.gmane.org/gmane.linux.kernel/2247930/
Latest status: http://thread.gmane.org/gmane.linux.kernel/2247930/focus=85102
Date rep/stat: 2016-06-20 / 2016-06-25
Notes: wip

Description: Set a valid period in pwm_apply_args() to ensure polarity setting won't be rejected
Report: http://thread.gmane.org/gmane.linux.pwm/3833/
Latest status: http://thread.gmane.org/gmane.linux.pwm/3833/focus=4149
Date rep/stat: 2016-05-27 / 2016-06-23
Notes: fix heading mainline