Linux 4.9: Reported regressions as of Sunday, 2016-10-23

[Thorsten Leemhuis]

Hi! Here is my first regression report for Linux 4.9. It lists 14
regressions I'm aware of. 
 
As always: Are you aware of any other regressions? Then please let me
know (simply CC regressions at leemhuis.info). And please tell me if there
is anything in the report that shouldn't be there.

Ciao, Thorsten

P.S.: I ran out of time today (I really need to automate some things, 
but I do not find time for it…; and some of the regression tracking work 
simply can not be automated :/) and could not make it completely 
through my backlog. That's why I likely missed lots of regressions 
that were reported during the merge window and remain unfixed as of now 
:-/ Let me know about those, please.

== Current regressions ==

Desc: PPC32: fails to boot on my PowerBook G4 Aluminum; bisected to commit 05fd007e4629
Repo: 2016-10-20 https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1253391.html
Stat: 2016-10-22 https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1255516.html
Note: no response from responsible developers yet

Desc: "Nokia N900 (omap3-n900) with ""VDD1: ramp_delay not set"" string in printk frequently"
Repo: 2016-10-19 https://bugzilla.kernel.org/show_bug.cgi?id=178371
Stat: n/a 
Note: told reporter whom to contact

Desc: radeon performance drop from 4.8 to 4.9-rc1 in Shadow of Mordor
Repo: 2016-10-14 https://bugzilla.kernel.org/show_bug.cgi?id=178221 https://lists.freedesktop.org/archives/dri-devel/2016-October/120693.html
Stat: 2016-10-20 https://lists.freedesktop.org/archives/dri-devel/2016-October/121427.html
Note: WIP

Desc: can't boot with root fs on md raid 0; mdadm: no devices listed in conf file were found. 
Repo: 2016-10-17 https://bugzilla.kernel.org/show_bug.cgi?id=178211
Stat: 2016-10-18 https://bugzilla.kernel.org/show_bug.cgi?id=178211#c1
Note: Root cause unknown; might be a controller driver issue

Desc: unable to handle kernel NULL pointer dereference at fuse_setattr
Repo: 2016-10-17 https://bugzilla.kernel.org/show_bug.cgi?id=177801
Stat: 2016-10-18 https://bugzilla.kernel.org/show_bug.cgi?id=177801#c5
Note: Fix heading upstream

Desc: Skylake gen6 suspend/resume video regression
Repo: 2016-10-16 https://bugzilla.kernel.org/show_bug.cgi?id=177731
Stat: n/a 
Note: 

Desc: warning in intel_dp_aux_transfer: CPU: 0 PID: 4 at drivers/gpu/drm/i915/intel_dp.c:1062 intel_dp_aux_transfer+0x1ed/0x230#
Repo: 2016-10-16 https://bugzilla.kernel.org/show_bug.cgi?id=177701
Stat: n/a 
Note: 

Desc: """Failed to find cpu0 device node"" in dmesg"
Repo: 2016-10-16 https://bugzilla.kernel.org/show_bug.cgi?id=177681 https://bugzilla.kernel.org/show_bug.cgi?id=180031
Stat: n/a 
Note: 

Desc: boot failure of Intel Mobile Internet Devices due to a change in the PCI subsystem that appeared in v4.9-rc1.
Repo: 2016-10-23 https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1255643.html
Stat: n/a 
Note: Fix proposed

Desc: "Regression with 0b9e2988ab22 (""ahci: use pci_alloc_irq_vectors"")"
Repo: 2016-10-21 https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1254825.html
Stat: 2016-10-21 https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1254882.html
Note: WIP

Desc: 761ed4a94582 tty: serial_core: convert uart_close to use tty_port_close
Repo: 2016-10-21 https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1254753.html
Stat: 2016-10-21 https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1254987.html
Note: WIP

Desc: [selinux/audit/netlink, regression?] Warning at kernel/softirq.c:161
Repo: 2016-10-20 https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1254148.html
Stat: 2016-10-20 https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1254151.html https://patchwork.ozlabs.org/patch/684753/
Note: WIP

Desc: some gpio drivers broken by commit 762c2e46
Repo: 2016-10-18 https://www.spinics.net/lists/linux-gpio/msg17283.html
Stat: 2016-10-21 https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1253906.html
Note: WIP

Desc: 4.9-rc1 boot regression, ambiguous bisect result
Repo: 2016-10-19 https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1253369.html
Stat: 2016-10-21 https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1255296.html
Note: WIP