Re: next boot: 564 boots: 59 failed, 448 passed with 57 offline (next-20160107)

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On Thu, Jan 07, 2016 at 05:28:10PM +0100, Thierry Reding wrote:
> On Thu, Jan 07, 2016 at 03:59:58PM +0000, Mark Brown wrote:
> > On Thu, Jan 07, 2016 at 07:41:52AM -0800, kernelci.org bot wrote:
> > 
> > > Tree: next
> > > Branch: local/master
> > > Git Describe: next-20160107
> > > Git Commit: 0f023a298a7d2a8e99c54913f7277b3c08c1f5c9
> > > Git URL: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
> > > Tested: 95 unique boards, 25 SoC families, 28 builds out of 135
> > > 
> > > Boot Failures Detected: https://kernelci.org/boot/?next-20160107&fail
> > 
> > For the past couple of days -next has been failing to boot on various
> > Tegra platforms, there are failures involving either no kernel output or
> > (with tegra_defconfig) backtraces during CMA allocation from USB, for
> > example:
> > 
> >    http://storage.kernelci.org/next/next-20160107/arm-tegra_defconfig/lab-khilman/boot-tegra30-beaver.html
> > 
> > >     multi_v7_defconfig+CONFIG_THUMB2_KERNEL=y:
> > >         tegra124-jetson-tk1: 2 failed labs
> > >         tegra30-beaver: 1 failed lab
> > > 
> > >     tegra_defconfig:
> > >         tegra124-jetson-tk1: 2 failed labs
> > >         tegra124-jetson-tk1_rootfs:nfs: 1 failed lab
> > >         tegra124-nyan-big: 1 failed lab
> > >         tegra30-beaver: 1 failed lab
> > > 
> > >     multi_v7_defconfig+CONFIG_ARM_LPAE=y:
> > >         tegra124-jetson-tk1: 1 failed lab
> > >         tegra124-nyan-big: 1 failed lab
> > > 
> > >     multi_v7_defconfig:
> > >         tegra124-jetson-tk1: 2 failed labs
> > >         tegra30-beaver: 1 failed lab
> > > 
> > >     multi_v7_defconfig+CONFIG_LKDTM=y:
> > >         tegra124-jetson-tk1: 2 failed labs
> > >         tegra30-beaver: 1 failed lab
> > > 
> > >     multi_v7_defconfig+CONFIG_PROVE_LOCKING=y:
> > >         tegra124-jetson-tk1: 2 failed labs
> > >         tegra30-beaver: 1 failed lab
> > 
> > I did bisects yesterday but they were a bit inconclusive, showing a
> > series of skipped commits in the TTY tree as being the culprits:
> > 
> > afd7f88f157796e586fc99d62da13a54024e0731 serial: 8250: move of_serial code to 8250 directory
> > 4e33870b3bb691996354a8f9e8f69458b4fc34d9 serial: of: CONFIG_SERIAL_8250 is always set
> > d1b5c87fa8058a3f477ae05555916dd1cea934ad serial: remove NWP serial support
> > 
> > which seems more than a little surprising and like they might be false
> > positives, especially in the cases that do produce output.  The errors
> > today look the same.  I've not investigated further than the bisects.
> > 
> > Full bisect logs:
> > 
> >  https://ci.linaro.org/view/people/job/tbaker-boot-bisect-bot/140/console
> >  https://ci.linaro.org/view/people/job/tbaker-boot-bisect-bot/141/console
> 
> These should all be fixed by this patch:
> 
> 	serial: 8250: of: Fix the driver and actually compile the 8250_of
> 
> which can be found in patchwork here:
> 
> 	https://patchwork.kernel.org/patch/7883541/
> 
> I think this is merely waiting to be picked up into the tty tree. I
> suspect the reason why there's output in the first place is because
> of earlyprintk. I've seen recent linux-next work properly, with the
> serial console hanging at some point (fbcon shows login prompt). If
> I apply the above patch things are back to normal.

I'll go queue that up later, but how is this suddenly showing up in
-next?  The tty tree has been pretty quiet for a while now..

thanks,

greg k-h
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