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