Re: [Xen-devel] [linux-3.14 bisection] complete test-amd64-i386-xl-qcow2

[Fabio Fantoni <fabio.fantoni@xxxxxxx>]

Il 01/09/2015 11:19, Ian Campbell ha scritto:
> On Wed, 2015-08-26 at 20:02 +0000, osstest service owner wrote:
> > branch xen-unstable
> > xen branch xen-unstable
> > job test-amd64-i386-xl-qcow2
> > test guest-saverestore
> >
> > Tree: linux 
> > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
> > Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git
> > Tree: qemu git://xenbits.xen.org/staging/qemu-xen-unstable.git
> > Tree: qemuu git://xenbits.xen.org/staging/qemu-upstream-unstable.git
> > Tree: xen git://xenbits.xen.org/xen.git
> >
> > *** Found and reproduced problem changeset ***
> >
> >    Bug is in tree:  linux 
> > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
> >    Bug introduced:  9e6c072a69d87100808d16279d60e9f857291340
> >    Bug not present: b60d3eee854b881b3f7a478c8b622cbef72d4c4e
> >
> >
> >    commit 9e6c072a69d87100808d16279d60e9f857291340
> >    Author: Marek Marczykowski-GÃrecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
> >    Date:   Fri Jun 26 03:28:24 2015 +0200
> >    
> >        xen/gntdevt: Fix race condition in gntdev_release()
> I'm not sure what to make of this.
>
> The qcow2 test is one of the only ones I'd expect to be exercising gntdev
> (most tests use LVM+blkback), which explains why this particular commit is
> apparently seeing issues due to this particular change.
>
>  From these ...
>
> http://logs.test-lab.xenproject.org/osstest/results/history/test-amd64-i386-xl-qcow2/linux-3.14.html
> http://logs.test-lab.xenproject.org/osstest/results/history/test-amd64-i386-xl-qcow2/linux-3.16.html
> http://logs.test-lab.xenproject.org/osstest/results/history/test-amd64-i386-xl-qcow2/linux-3.18.html
> http://logs.test-lab.xenproject.org/osstest/results/history/test-amd64-i386-xl-qcow2/linux-4.1.html
> http://logs.test-lab.xenproject.org/osstest/results/history/test-amd64-i386-xl-qcow2/linux-linus.html
>
> ... it seems only 3.14 is hit, I wonder why?
>
> Maybe the other stable trees haven't gotten this yet (or osstest hasn't
> gotten to a revision with it) but linux-linus certainly will and it appears
> to be fine there. Perhaps a mis-applied/behaving backport or a missing
> associated patch?
>
> Flight 60952 on linux-linus was on huxelrebe0, contained 30b03d05e0746 and
> passed. That is the same h/w as huxelrebe1 which is failing (sticky) on
> 3.14. Also 60785 on linux-4.1 was on huxelrebe1 itself and contains the
> backport, and was fine. So I conclude it is probably not a h/w specific
> issue.
>
> Ian.
Hi, recently I tested qcow2 overlay on raw base as domUs disks (qcow2 
format in xl already specified) and I found that disk was always 
corrupted (without nothing about in logs).
I tried with diffent versions of upstream qemu (2.2 and 2.4) and dom0 
kernel (3.2 from wheezy repo and 3.16 from wheezy-backports), maybe also 
related to this?
Thanks for any reply and sorry for my bad english.

> >        
> >        commit 30b03d05e07467b8c6ec683ea96b5bffcbcd3931 upstream.
> >        
> >        While gntdev_release() is called the MMU notifier is still registered
> >        and can traverse priv->maps list even if no pages are mapped (which is
> >        the case -- gntdev_release() is called after all). But
> >        gntdev_release() will clear that list, so make sure that only one of
> >        those things happens at the same time.
> >        
> >        Signed-off-by: Marek Marczykowski-GÃrecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
> >        Signed-off-by: David Vrabel <david.vrabel@xxxxxxxxxx>
> >        Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> >
> >
> > For bisection revision-tuple graph see:
> >     
> > http://logs.test-lab.xenproject.org/osstest/results/bisect/linux-3.14/test-amd64-i386-xl-qcow2.guest-saverestore.html
> > Revision IDs in each graph node refer, respectively, to the Trees above.
> >
> > ----------------------------------------
> > Searching for failure / basis pass:
> >   60823 fail [host=huxelrebe1] / 60666 [host=chardonnay1] 60655 [host=elbling1] 
> > 60549 [host=chardonnay0] template as basis? using template as basis.
> > Failure / basis pass flights: 60823 / 60666
> > (tree with no url: ovmf)
> > (tree with no url: seabios)
> > Tree: linux 
> > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
> > Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git
> > Tree: qemu git://xenbits.xen.org/staging/qemu-xen-unstable.git
> > Tree: qemuu git://xenbits.xen.org/staging/qemu-upstream-unstable.git
> > Tree: xen git://xenbits.xen.org/xen.git
> > Latest 318ff69ca4c275bae4b875b87df5bdbd7988486a 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> > Basis pass 9b8b905951bde404f20a7bd4b37a5134f3484569 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 201eac83831d94ba2e9a63a7eed4c128633fafb1
> > Generating revisions with ./adhoc-revtuple-generator  
> > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git#9b8b905951bde404f20a7bd4b37a5134f3484569-318ff69ca4c275bae4b875b87df5bdbd7988486a
> >  
> > git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860
> >  
> > git://xenbits.xen.org/staging/qemu-xen-unstable.git#7f057440b31da38196e3398fd1b618fc36ad97d6-7f057440b31da38196e3398fd1b618fc36ad97d6
> >  
> > git://xenbits.xen.org/staging/qemu-upstream-unstable.git#bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa-bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa
> >  
> > git://xenbits.xen.org/xen.git#201eac83831d94ba2e9a63a7eed4c128633fafb1-145a8004a7d659668d5a3b0ad9868d7678b24822
> > + exec
> > + sh -xe
> > + cd /home/osstest/repos/linux-stable
> > + git remote set-url origin 
> > git://cache:9419/git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
> > + git fetch -p origin +refs/heads/*:refs/remotes/origin/*
> > + exec
> > + sh -xe
> > + cd /home/osstest/repos/xen
> > + git remote set-url origin git://cache:9419/git://xenbits.xen.org/xen.git
> > + git fetch -p origin +refs/heads/*:refs/remotes/origin/*
> > + exec
> > + sh -xe
> > + cd /home/osstest/repos/linux-stable
> > + git remote set-url origin 
> > git://cache:9419/git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
> > + git fetch -p origin +refs/heads/*:refs/remotes/origin/*
> > + exec
> > + sh -xe
> > + cd /home/osstest/repos/xen
> > + git remote set-url origin git://cache:9419/git://xenbits.xen.org/xen.git
> > + git fetch -p origin +refs/heads/*:refs/remotes/origin/*
> > Loaded 2001 nodes in revision graph
> > Searching for test results:
> >   60655 [host=elbling1]
> >   60666 [host=chardonnay1]
> >   60821 pass 9b8b905951bde404f20a7bd4b37a5134f3484569 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 201eac83831d94ba2e9a63a7eed4c128633fafb1
> >   60747 fail 318ff69ca4c275bae4b875b87df5bdbd7988486a 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> >   60787 fail 318ff69ca4c275bae4b875b87df5bdbd7988486a 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> >   60823 fail 318ff69ca4c275bae4b875b87df5bdbd7988486a 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> >   60824 fail 318ff69ca4c275bae4b875b87df5bdbd7988486a 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> >   60850 pass 9b8b905951bde404f20a7bd4b37a5134f3484569 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 201eac83831d94ba2e9a63a7eed4c128633fafb1
> >   60852 fail 318ff69ca4c275bae4b875b87df5bdbd7988486a 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> >   60885 fail 9e6c072a69d87100808d16279d60e9f857291340 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> >   60854 fail 6221fbc5ac6bf4a0d21ad5881e31daa9700c7a88 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> >   60855 pass d68c869854ff29a7baa1355470caaf6c999d2008 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> >   60857 pass adbbaa36dd55ff0bde07391d898779760b5206df 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> >   60887 pass b60d3eee854b881b3f7a478c8b622cbef72d4c4e 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> >   60891 fail 9e6c072a69d87100808d16279d60e9f857291340 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> >   60892 pass b60d3eee854b881b3f7a478c8b622cbef72d4c4e 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> >   60893 fail 9e6c072a69d87100808d16279d60e9f857291340 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> >   60859 pass 166b8915aad6f7db7446b74f38a8c3a45626c815 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> >   60883 pass b60d3eee854b881b3f7a478c8b622cbef72d4c4e 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> > Searching for interesting versions
> >   Result found: flight 60821 (pass), for basis pass
> >   Result found: flight 60823 (fail), for basis failure
> >   Repro found: flight 60850 (pass), for basis pass
> >   Repro found: flight 60852 (fail), for basis failure
> >   0 revisions at b60d3eee854b881b3f7a478c8b622cbef72d4c4e 
> > c530a75c1e6a472b0eb9558310b518f0dfcd8860 
> > 7f057440b31da38196e3398fd1b618fc36ad97d6 
> > bcf35eec0b621c46dbf0aeb40c6bc06b5d3981aa 
> > 145a8004a7d659668d5a3b0ad9868d7678b24822
> > No revisions left to test, checking graph state.
> >   Result found: flight 60883 (pass), for last pass
> >   Result found: flight 60885 (fail), for first failure
> >   Repro found: flight 60887 (pass), for last pass
> >   Repro found: flight 60891 (fail), for first failure
> >   Repro found: flight 60892 (pass), for last pass
> >   Repro found: flight 60893 (fail), for first failure
> >
> > *** Found and reproduced problem changeset ***
> >
> >    Bug is in tree:  linux 
> > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
> >    Bug introduced:  9e6c072a69d87100808d16279d60e9f857291340
> >    Bug not present: b60d3eee854b881b3f7a478c8b622cbef72d4c4e
> >
> > + exec
> > + sh -xe
> > + cd /home/osstest/repos/linux-stable
> > + git remote set-url origin 
> > git://cache:9419/git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
> > + git fetch -p origin +refs/heads/*:refs/remotes/origin/*
> >
> >    commit 9e6c072a69d87100808d16279d60e9f857291340
> >    Author: Marek Marczykowski-GÃrecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
> >    Date:   Fri Jun 26 03:28:24 2015 +0200
> >    
> >        xen/gntdevt: Fix race condition in gntdev_release()
> >        
> >        commit 30b03d05e07467b8c6ec683ea96b5bffcbcd3931 upstream.
> >        
> >        While gntdev_release() is called the MMU notifier is still registered
> >        and can traverse priv->maps list even if no pages are mapped (which is
> >        the case -- gntdev_release() is called after all). But
> >        gntdev_release() will clear that list, so make sure that only one of
> >        those things happens at the same time.
> >        
> >        Signed-off-by: Marek Marczykowski-GÃrecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
> >        Signed-off-by: David Vrabel <david.vrabel@xxxxxxxxxx>
> >        Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> >
> > Revision graph left in 
> > /home/logs/results/bisect/linux-3.14/test-amd64-i386-xl-qcow2.guest-saverestore.{dot,ps,png,html}.
> > ----------------------------------------
> > 60893: tolerable ALL FAIL
> >
> > flight 60893 linux-3.14 real-bisect [real]
> > http://logs.test-lab.xenproject.org/osstest/logs/60893/
> >
> > Failures :-/ but no regressions.
> >
> > Tests which did not succeed,
> > including tests which could not be run:
> >   test-amd64-i386-xl-qcow2     13 guest-saverestore       fail baseline untested
> >
> >
> > jobs:
> >   test-amd64-i386-xl-qcow2                                     fail
> >
> >
> > ------------------------------------------------------------
> > sg-report-flight on osstest.test-lab.xenproject.org
> > logs: /home/logs/logs
> > images: /home/logs/images
> >
> > Logs, config files, etc. are available at
> >      http://logs.test-lab.xenproject.org/osstest/logs
> >
> > Explanation of these reports, and of osstest in general, is at
> >      
> > http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README.email;hb=master
> >      http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README;hb=master
> >
> > Test harness code can be found at
> >      http://xenbits.xen.org/gitweb?p=osstest.git;a=summary
> _______________________________________________
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