Mailing List Archive

[xen-4.1-testing bisection] complete test-amd64-i386-xl
branch xen-4.1-testing
xen branch xen-4.1-testing
job test-amd64-i386-xl
test leak-check/check

Tree: linux git://xenbits.xen.org/linux-pvops.git
Tree: qemu git://xenbits.xen.org/staging/qemu-xen-4.1-testing.git
Tree: xen http://xenbits.xen.org/hg/staging/xen-4.1-testing.hg

*** Found and reproduced problem changeset ***

Bug is in tree: xen http://xenbits.xen.org/hg/staging/xen-4.1-testing.hg
Bug introduced: 93e17b0cd035
Bug not present: 255a0b6a8104


changeset: 23428:93e17b0cd035
tag: tip
user: Greg Wettstein <greg@enjellic.com>
date: Thu Dec 13 14:35:58 2012 +0000

libxl: avoid blktap2 deadlock on cleanup

Establishes correct cleanup behavior for blktap devices. This patch
implements the release of the backend device before calling for
the destruction of the userspace component of the blktap device.

Without this patch the kernel xen-blkback driver deadlocks with
the blktap2 user control plane until the IPC channel is terminated by the
timeout on the select() call. This results in a noticeable delay
in the termination of the guest and causes the blktap minor
number which had been allocated to be orphaned.

Signed-off-by: Greg Wettstein <greg@enjellic.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>




For bisection revision-tuple graph see:
http://www.chiark.greenend.org.uk/~xensrcts/results/bisect.xen-4.1-testing.test-amd64-i386-xl.leak-check--check.html
Revision IDs in each graph node refer, respectively, to the Trees above.

----------------------------------------
Searching for failure / basis pass:
14715 fail [host=earwig] / 14679 [host=lace-bug] 14677 [host=woodlouse] 14675 [host=bush-cricket] 14662 [host=potato-beetle] 14566 [host=gall-mite] 14562 [host=lace-bug] 14484 [host=lace-bug] 14419 [host=gall-mite] 14400 ok.
Failure / basis pass flights: 14715 / 14400
Tree: linux git://xenbits.xen.org/linux-pvops.git
Tree: qemu git://xenbits.xen.org/staging/qemu-xen-4.1-testing.git
Tree: xen http://xenbits.xen.org/hg/staging/xen-4.1-testing.hg
Latest a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 93e17b0cd035
Basis pass a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae ce405f5fd5ee
Generating revisions with ./adhoc-revtuple-generator git://xenbits.xen.org/linux-pvops.git#a938a246d34912423c560f475ccf1ce0c71d9d00-a938a246d34912423c560f475ccf1ce0c71d9d00 git://xenbits.xen.org/staging/qemu-xen-4.1-testing.git#b36c42985575cd6d761d39e5770e57a1f52832ae-b36c42985575cd6d761d39e5770e57a1f52832ae http://xenbits.xen.org/hg/staging/xen-4.1-testing.hg#ce405f5fd5ee-93e17b0cd035
pulling from ssh://xen@xenbits.xen.org/HG/staging/xen-4.1-testing.hg
searching for changes
no changes found
pulling from ssh://xen@xenbits.xen.org/HG/staging/xen-4.1-testing.hg
searching for changes
no changes found
Loaded 1001 nodes in revision graph
Searching for test results:
14419 [host=gall-mite]
14400 pass a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae ce405f5fd5ee
14484 [host=lace-bug]
14562 [host=lace-bug]
14566 [host=gall-mite]
14684 fail a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 93e17b0cd035
14677 [host=woodlouse]
14662 [host=potato-beetle]
14675 [host=bush-cricket]
14679 [host=lace-bug]
14689 fail a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 93e17b0cd035
14699 fail a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 93e17b0cd035
14706 fail a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 93e17b0cd035
14723 pass a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae ce405f5fd5ee
14724 fail a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 93e17b0cd035
14725 pass a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae cadc212c8ef3
14726 pass a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 0125069bc1b2
14715 fail a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 93e17b0cd035
14727 pass a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae a866cc5b8235
14729 pass a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 255a0b6a8104
14730 fail a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 93e17b0cd035
14731 pass a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 255a0b6a8104
14732 fail a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 93e17b0cd035
14733 pass a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 255a0b6a8104
14734 fail a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 93e17b0cd035
Searching for interesting versions
Result found: flight 14400 (pass), for basis pass
Result found: flight 14684 (fail), for basis failure
Repro found: flight 14723 (pass), for basis pass
Repro found: flight 14724 (fail), for basis failure
0 revisions at a938a246d34912423c560f475ccf1ce0c71d9d00 b36c42985575cd6d761d39e5770e57a1f52832ae 255a0b6a8104
No revisions left to test, checking graph state.
Result found: flight 14729 (pass), for last pass
Result found: flight 14730 (fail), for first failure
Repro found: flight 14731 (pass), for last pass
Repro found: flight 14732 (fail), for first failure
Repro found: flight 14733 (pass), for last pass
Repro found: flight 14734 (fail), for first failure

*** Found and reproduced problem changeset ***

Bug is in tree: xen http://xenbits.xen.org/hg/staging/xen-4.1-testing.hg
Bug introduced: 93e17b0cd035
Bug not present: 255a0b6a8104

pulling from ssh://xen@xenbits.xen.org/HG/staging/xen-4.1-testing.hg
searching for changes
no changes found

changeset: 23428:93e17b0cd035
tag: tip
user: Greg Wettstein <greg@enjellic.com>
date: Thu Dec 13 14:35:58 2012 +0000

libxl: avoid blktap2 deadlock on cleanup

Establishes correct cleanup behavior for blktap devices. This patch
implements the release of the backend device before calling for
the destruction of the userspace component of the blktap device.

Without this patch the kernel xen-blkback driver deadlocks with
the blktap2 user control plane until the IPC channel is terminated by the
timeout on the select() call. This results in a noticeable delay
in the termination of the guest and causes the blktap minor
number which had been allocated to be orphaned.

Signed-off-by: Greg Wettstein <greg@enjellic.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>



Revision graph left in /home/xc_osstest/results/bisect.xen-4.1-testing.test-amd64-i386-xl.leak-check--check.{dot,ps,png,html}.
----------------------------------------
14734: tolerable ALL FAIL

flight 14734 xen-4.1-testing real-bisect [real]
http://www.chiark.greenend.org.uk/~xensrcts/logs/14734/

Failures :-/ but no regressions.

Tests which did not succeed,
including tests which could not be run:
test-amd64-i386-xl 18 leak-check/check fail baseline untested


jobs:
test-amd64-i386-xl fail


------------------------------------------------------------
sg-report-flight on woking.cam.xci-test.com
logs: /home/xc_osstest/logs
images: /home/xc_osstest/images

Logs, config files, etc. are available at
http://www.chiark.greenend.org.uk/~xensrcts/logs

Test harness code can be found at
http://xenbits.xensource.com/gitweb?p=osstest.git;a=summary


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