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[Xen-devel] [xen-unstable bisection] complete test-amd64-i386-xl

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] [xen-unstable bisection] complete test-amd64-i386-xl
From: xen.org <ian.jackson@xxxxxxxxxxxxx>
Date: Tue, 9 Aug 2011 01:26:07 +0100
Cc: ian.jackson@xxxxxxxxxxxxx, keir@xxxxxxx, stefano.stabellini@xxxxxxxxxxxxx
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branch xen-unstable
xen branch xen-unstable
job test-amd64-i386-xl
test xen-boot

Tree: linux git://git.eu.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git
Tree: qemu git://hg.uk.xensource.com/HG/qemu-xen-unstable.git
Tree: xen http://hg.uk.xensource.com/xen-unstable.hg

*** Found and reproduced problem changeset ***

  Bug is in tree:  xen http://hg.uk.xensource.com/xen-unstable.hg
  Bug introduced:  537918f518ee
  Bug not present: 42edf1481c57


  changeset:   23735:537918f518ee
  user:        Jan Beulich <jbeulich@xxxxxxxxxx>
  date:        Sat Jul 23 08:49:15 2011 +0100
      
      add privileged (dom0) kernel feature indication
      
      With our switching away from supporting 32-bit Dom0 operation, users
      complained that attempts (perhaps due to lack of knowledge of that
      change) to boot the no longer privileged kernel in Dom0 resulted in
      apparently silent failure. To make the mismatch explicit and visible,
      add dom0 feature flag that the kernel can set to indicate operation as
      dom0 is supported.
      
      Due to the way elf_xen_parse_features() worked up to now (getting
      fixed here), adding features indications to the old, string based ELF
      note would make the respective kernel unusable on older hypervisors.
      For that reason, a new ELF Note is being introduced that allows
      specifying supported features as a bit array instead (with features
      unknown to the hypervisor simply ignored, as now also done by
      elf_xen_parse_features(), whereas here unknown kernel-required
      features still keep the kernel [and hence VM] from booting).
      
      Introduce and use elf_note_numeric_array() to be forward
      compatible (or else an old hypervisor wouldn't be able to parse kernel
      specified features occupying more than 64 bits - thanks, Ian!).
      
      Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
      
      


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

----------------------------------------
Searching for failure / basis pass:
 8328 fail [host=woodlouse] / 8325 [host=gall-mite] 8256 ok.
Failure / basis pass flights: 8328 / 8256
Tree: linux git://git.eu.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git
Tree: qemu git://hg.uk.xensource.com/HG/qemu-xen-unstable.git
Tree: xen http://hg.uk.xensource.com/xen-unstable.hg
Latest 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 0f36c2eec2e1
Basis pass 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 42edf1481c57
Generating revisions with ./adhoc-revtuple-generator  
git://git.eu.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git#25266338a41470a21e9b3974445be09e0640dda7-25266338a41470a21e9b3974445be09e0640dda7
 
git://hg.uk.xensource.com/HG/qemu-xen-unstable.git#cd776ee9408ff127f934a707c1a339ee600bc127-cd776ee9408ff127f934a707c1a339ee600bc127
 http://hg.uk.xensource.com/xen-unstable.hg#42edf1481c57-0f36c2eec2e1
pulling from http://hg.uk.xensource.com/xen-unstable.hg
searching for changes
no changes found
pulling from http://hg.uk.xensource.com/xen-unstable.hg
searching for changes
no changes found
Loaded 127 nodes in revision graph
Searching for test results:
 8305 [host=leaf-beetle]
 8292 []
 8256 pass 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 42edf1481c57
 8308 fail 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 0f36c2eec2e1
 8249 [host=gall-mite]
 8312 [host=potato-beetle]
 8289 fail 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 fa4e2ca9ecff
 8244 [host=leaf-beetle]
 8240 [host=potato-beetle]
 8236 [host=potato-beetle]
 8295 []
 8302 fail 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 0f36c2eec2e1
 8316 fail 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 0f36c2eec2e1
 8326 fail 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 0f36c2eec2e1
 8325 [host=gall-mite]
 8327 fail 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 0f36c2eec2e1
 8337 pass 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 42edf1481c57
 8332 fail 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 815ef5cf0261
 8328 fail 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 0f36c2eec2e1
 8333 fail 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 31683aa4bfb3
 8329 pass 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 42edf1481c57
 8330 fail 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 0f36c2eec2e1
 8338 fail 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 537918f518ee
 8331 fail 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 3244ff483d61
 8334 fail 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 537918f518ee
 8335 pass 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 42edf1481c57
 8336 fail 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 537918f518ee
Searching for interesting versions
 Result found: flight 8256 (pass), for basis pass
 Result found: flight 8302 (fail), for basis failure
 Repro found: flight 8329 (pass), for basis pass
 Repro found: flight 8330 (fail), for basis failure
 0 revisions at 25266338a41470a21e9b3974445be09e0640dda7 
cd776ee9408ff127f934a707c1a339ee600bc127 42edf1481c57
No revisions left to test, checking graph state.
 Result found: flight 8256 (pass), for last pass
 Result found: flight 8334 (fail), for first failure
 Repro found: flight 8335 (pass), for last pass
 Repro found: flight 8336 (fail), for first failure
 Repro found: flight 8337 (pass), for last pass
 Repro found: flight 8338 (fail), for first failure

*** Found and reproduced problem changeset ***

  Bug is in tree:  xen http://hg.uk.xensource.com/xen-unstable.hg
  Bug introduced:  537918f518ee
  Bug not present: 42edf1481c57

pulling from http://hg.uk.xensource.com/xen-unstable.hg
searching for changes
no changes found

  changeset:   23735:537918f518ee
  user:        Jan Beulich <jbeulich@xxxxxxxxxx>
  date:        Sat Jul 23 08:49:15 2011 +0100
      
      add privileged (dom0) kernel feature indication
      
      With our switching away from supporting 32-bit Dom0 operation, users
      complained that attempts (perhaps due to lack of knowledge of that
      change) to boot the no longer privileged kernel in Dom0 resulted in
      apparently silent failure. To make the mismatch explicit and visible,
      add dom0 feature flag that the kernel can set to indicate operation as
      dom0 is supported.
      
      Due to the way elf_xen_parse_features() worked up to now (getting
      fixed here), adding features indications to the old, string based ELF
      note would make the respective kernel unusable on older hypervisors.
      For that reason, a new ELF Note is being introduced that allows
      specifying supported features as a bit array instead (with features
      unknown to the hypervisor simply ignored, as now also done by
      elf_xen_parse_features(), whereas here unknown kernel-required
      features still keep the kernel [and hence VM] from booting).
      
      Introduce and use elf_note_numeric_array() to be forward
      compatible (or else an old hypervisor wouldn't be able to parse kernel
      specified features occupying more than 64 bits - thanks, Ian!).
      
      Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
      
      

Revision graph left in 
/home/xc_osstest/results/bisect.xen-unstable.test-amd64-i386-xl.xen-boot.{dot,ps,png,html}.
----------------------------------------
8338: ALL FAIL

flight 8338 xen-unstable real-bisect [real]
http://www.chiark.greenend.org.uk/~xensrcts/logs/8338/


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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