Re: next/master boot: 179 boots: 11 failed, 167 passed with 1 offline (next-20180731)

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On Wed, Aug 01, 2018 at 11:33:03AM +0100, Mark Brown wrote:
> On Wed, Aug 01, 2018 at 11:05:36AM +0100, Guillaume Tucker wrote:
> > On 31/07/18 16:14, kernelci.org bot wrote:
> 
> > > Boot Regressions Detected:
> > [...]
> > > x86:
> > > 
> > >      x86_64_defconfig:
> > >          qemu:
> > >              lab-baylibre: failing since 1 day (last pass: next-20180727 - first fail: next-20180730)
> > >              lab-mhart: failing since 1 day (last pass: next-20180727 - first fail: next-20180730)
> > >              lab-linaro-lkft: failing since 1 day (last pass: next-20180727 - first fail: next-20180730)
> 
> > I've run a few automated bisection on kernelci.org, it initially
> > landed on this merge commit:
> 
> >     ff719be3476a Merge remote-tracking branch 'scsi/for-next'
> 
> > The 2 parent commits boot fine, but not the resulting merge.  So I
> > did another bisection based on the first branch while merging the
> > incoming one in each iteration, and that landed on this commit:
> 
> >     commit d5038a13eca72fb216c07eb717169092e92284f1
> >     Author: Johannes Thumshirn <jthumshirn@xxxxxxx>
> >     Date:   Wed Jul 4 10:53:56 2018 +0200
> > 
> >         scsi: core: switch to scsi-mq by default
> > 
> > 
> > I then tried to revert it on top of next-20180731 and it did make it
> > boot again.  Now, I haven't looked much further in the code, it's
> > entirely possible that the problem is on another incoming branch, in
> > the code that this config enables.  At least it seems to be narrowing
> > down the scope for where to look for a problem.
> 
> Copying in everyone else who signed off/acked/reviewed that commit.

You may have to provide some clue, such as dmesg log, boot disk, ...

I guess you don't use virtio-scsi/virtio-blk since both run at blk-mq
mode at default, even though without d5038a13eca72fb.


Thanks,
Ming



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