Reported regressions for 4.7 as of Sunday, 2016-06-19

[Thorsten Leemhuis]

Hi! Here is my second regression report for 4.7. It has 19 entries; 8 of
them are new; 8 regressions were fixed since the last report (those are 
not included in this report) and I dropped 2 which turned out to not be
regressions after all (at least that's what I think right now). 

FWIW, it's still a lot of work to generate this report (as expected). I'm still
thinking about a plan how to make the whole tracking process easier and more  
attractive for everyone, but it will take a few weeks before I come up with a
concrete plan.

HTH, CU, Thorsten

(Â) last weeks report was http://article.gmane.org/gmane.linux.kernel/2241805

P.S.: 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.
----

Description:    ath10k no longer authenticates and freezes system
Report:         https://bugzilla.kernel.org/show_bug.cgi?id=119151
Latest status:  http://thread.gmane.org/gmane.linux.kernel.wireless.general/152513/focus=152535
Date rep/stat:  2016-05-27 / 2016-06-02
Notes:          forgotten? poked bug report on Friday

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=92602
Date rep/stat:  2016-05-30 / 2016-06-18
Notes:          investigation ongoing

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:          wip? 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:  7.6.
Date rep/stat:  2016-06-01 / 2016-06-07
Notes:          poked bugzilla, 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=2238208
Date rep/stat:  2016-06-02 / 2016-06-08
Notes:          @regression tracker: poke someone

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#c12
Date rep/stat:  2016-06-04 / 2016-06-15
Notes:          investigation ongoing, waiting for reporter

Description:    5c0a85fad9: unixbench.score -6.3% regression
Report:         http://thread.gmane.org/gmane.linux.kernel/2235794
Latest status:  http://thread.gmane.org/gmane.linux.kernel.mm/153151/focus=153409
Date rep/stat:  2016-06-06 / 2016-06-17
Notes:          wip, revert discussed

Description:    System hang possibly due to brcmfmac regression
Report:         https://bugzilla.kernel.org/show_bug.cgi?id=119761
Latest status:  https://bugzilla.kernel.org/show_bug.cgi?id=119761#c1
Date rep/stat:  2016-06-07 / 2016-06-12
Notes:          might be fixed, waiting for clarification from reporter

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:          patch in linux-next

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:          investigation ongoing

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#c8
Date rep/stat:  2016-06-09 / 2016-06-16
Notes:          reporter needs help to provide more details to debug the problem

Description:    BUG() in dmesg after loading nouveau module
Report:         https://bugzilla.kernel.org/show_bug.cgi?id=120591
Latest status:  https://bugzilla.kernel.org/show_bug.cgi?id=120591#c3
Date rep/stat:  2016-06-18 / 2016-06-19
Notes:          wip

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:  n/a
Date rep/stat:  2016-06-14 / n/a
Notes:          poked bugzilla, a bit unsure how to proceed

Description:    Performance drop 30-40% for SPECjbb2005 and SPECjvm2008 benchmarks
Report:         https://bugzilla.kernel.org/show_bug.cgi?id=120481
Latest status:  n/a
Date rep/stat:  2016-06-16 / n/a
Notes:          real reason unknown

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#c9
Date rep/stat:  2016-06-17 / 2016-06-17
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:  n/a
Date rep/stat:  2016-06-14 / n/a
Notes:          waiting for reporter

Description:    performance regression on Jetson TK1 since 4.7-rc1: moving windows under X would become unsufferably slow, and graphical performance under X in general is seriously degraded
Report:         http://thread.gmane.org/gmane.linux.ports.tegra/26983/focus=2245415
Latest status:  n/a
Date rep/stat:  2016-06-16 / n/a
Notes:          wip, fix available

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:          wip, fix available

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