[Xen-devel] [linux-4.1 bisection] complete test-amd64-i386-freebsd10-amd64

[osstest service owner <osstest-admin@xxxxxxxxxxxxxx>]

branch xen-unstable
xenbranch xen-unstable
job test-amd64-i386-freebsd10-amd64
testid guest-start

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/qemu-xen-traditional.git
Tree: qemuu git://xenbits.xen.org/qemu-xen.git
Tree: xen git://xenbits.xen.org/xen.git

*** Found and reproduced problem changeset ***

  Bug is in tree:  xen git://xenbits.xen.org/xen.git
  Bug introduced:  c52319642bb9069436d4aec75361049f5fac63ed
  Bug not present: 268ead59ce10967cf7490353d743ebc1bb7a9a4c
  Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/95750/


  commit c52319642bb9069436d4aec75361049f5fac63ed
  Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  Date:   Thu Jun 2 12:08:42 2016 +0100
  
      x86/cpuid: Calculate a guests xfeature_mask from its featureset
      
      libxc current performs the xstate calculation for guests, and provides the
      information to Xen to be used when satisfying CPUID traps.  (There is 
further
      work planned to improve this arrangement, but the worst a buggy toolstack 
can
      do is make junk appear in the cpuid leaves for the guest.)
      
      dom0 however has no policy constructed for it, and certain fields filter
      straight through from hardware.
      
      Linux queries CPUID.7[0].{EAX/EDX} alone to choose a setting for %xcr0, 
which
      is a valid action to take, but features such as MPX and PKRU are not 
supported
      for PV guests.  As a result, Linux, using leaked hardware information, 
fails
      to set %xcr0 on newer Skylake hardware with PKRU support, and crashes.
      
      As an interim solution, dynamically calculate the correct xfeature_mask 
and
      xstate_size to report to the guest for CPUID.7[0] queries.  This ensures 
that
      domains don't see leaked hardware values, even when no cpuid policy is
      provided.
      
      Similarly, CPUID.7[1]{ECX/EDX} represents the applicable settings for 
MSR_XSS.
      As Xen doesn't yet support any XSS states in guests, unconditionally zero
      them.
      
      Reported-by: Luwei Kang <luwei.kang@xxxxxxxxx>
      Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
      Tested-by: Luwei Kang <luwei.kang@xxxxxxxxx>
      Release-acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
      Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>


For bisection revision-tuple graph see:
   
http://logs.test-lab.xenproject.org/osstest/results/bisect/linux-4.1/test-amd64-i386-freebsd10-amd64.guest-start.html
Revision IDs in each graph node refer, respectively, to the Trees above.

----------------------------------------
Running cs-bisection-step 
--graph-out=/home/logs/results/bisect/linux-4.1/test-amd64-i386-freebsd10-amd64.guest-start
 --summary-out=tmp/95750.bisection-summary --basis-template=94729 
--blessings=real,real-bisect linux-4.1 test-amd64-i386-freebsd10-amd64 
guest-start
Searching for failure / basis pass:
 95591 fail [host=baroque1] / 94729 [host=elbling0] 94034 [host=huxelrebe1] 
93220 [host=fiano1] 93111 [host=chardonnay1] 92143 [host=huxelrebe0] 91350 
[host=merlot0] 91189 [host=baroque0] 91008 [host=merlot1] 90845 [host=rimava0] 
89382 [host=huxelrebe1] 89248 [host=pinot1] 88721 [host=fiano1] 88639 
[host=chardonnay1] 88510 [host=rimava1] 88390 [host=italia0] 88251 ok.
Failure / basis pass flights: 95591 / 88251
(tree with no url: minios)
(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/qemu-xen-traditional.git
Tree: qemuu git://xenbits.xen.org/qemu-xen.git
Tree: xen git://xenbits.xen.org/xen.git
Latest 888172862fa78505c4e4674c205a06586443d83f 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
c2a17869d5dcd845d646bf4db122cad73596a2be
Basis pass 7f30737678023b5becaf0e2e012665f71b886a7d 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
21f6526d1da331611ac5fe12967549d1a04e149b 
316a862e5534249a6e6d876b4e203342d3fb870e 
a6f2cdb633bf519244a16674031b8034b581ba7f
Generating revisions with ./adhoc-revtuple-generator  
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git#7f30737678023b5becaf0e2e012665f71b886a7d-888172862fa78505c4e4674c205a06586443d83f
 
git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860
 
git://xenbits.xen.org/qemu-xen-traditional.git#21f6526d1da331611ac5fe12967549d1a04e149b-df553c056104e3dd8a2bd2e72539a57c4c085bae
 
git://xenbits.xen.org/qemu-xen.git#316a862e5534249a6e6d876b4e203342d3fb870e-44a072f0de0d57c95c2212bbce02888832b7b74f
 
git://xenbits.xen.org/xen.git#a6f2cdb633bf519244a16674031b8034b581ba7f-c2a17869d5dcd845d646bf4db122cad73596a2be
Loaded 10941 nodes in revision graph
Searching for test results:
 86510 [host=pinot0]
 86587 pass 7f30737678023b5becaf0e2e012665f71b886a7d 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
21f6526d1da331611ac5fe12967549d1a04e149b 
316a862e5534249a6e6d876b4e203342d3fb870e 
a6f2cdb633bf519244a16674031b8034b581ba7f
 86654 [host=italia0]
 86761 [host=italia1]
 86830 [host=chardonnay1]
 86912 [host=nocera0]
 87031 [host=pinot1]
 87117 [host=merlot0]
 87204 [host=huxelrebe1]
 87295 [host=huxelrebe0]
 87465 [host=fiano0]
 87582 [host=elbling0]
 87692 [host=rimava0]
 87765 [host=baroque0]
 87856 [host=chardonnay0]
 88073 [host=pinot0]
 88251 pass 7f30737678023b5becaf0e2e012665f71b886a7d 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
21f6526d1da331611ac5fe12967549d1a04e149b 
316a862e5534249a6e6d876b4e203342d3fb870e 
a6f2cdb633bf519244a16674031b8034b581ba7f
 88390 [host=italia0]
 88510 [host=rimava1]
 88639 [host=chardonnay1]
 88721 [host=fiano1]
 89248 [host=pinot1]
 89382 [host=huxelrebe1]
 90845 [host=rimava0]
 91008 [host=merlot1]
 91189 [host=baroque0]
 91350 [host=merlot0]
 92143 [host=huxelrebe0]
 93111 [host=chardonnay1]
 93220 [host=fiano1]
 94034 [host=huxelrebe1]
 94729 [host=elbling0]
 95408 fail 888172862fa78505c4e4674c205a06586443d83f 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
c2a17869d5dcd845d646bf4db122cad73596a2be
 95456 pass 7f30737678023b5becaf0e2e012665f71b886a7d 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
21f6526d1da331611ac5fe12967549d1a04e149b 
316a862e5534249a6e6d876b4e203342d3fb870e 
a6f2cdb633bf519244a16674031b8034b581ba7f
 95455 fail 888172862fa78505c4e4674c205a06586443d83f 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
c2a17869d5dcd845d646bf4db122cad73596a2be
 95503 pass ab88ce5feca4204ecf4e7ef6c6693ff67edc2169 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
21f6526d1da331611ac5fe12967549d1a04e149b 
316a862e5534249a6e6d876b4e203342d3fb870e 
8b27d2b8af898597367e2a97aaed3e3404eda5af
 95581 fail e452f7382f5715d7d8b1d5f1129ded8870eaed5e 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
c2a17869d5dcd845d646bf4db122cad73596a2be
 95512 pass 54419e3efcd6677e4b0841666e2fc605d2e5df86 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
21f6526d1da331611ac5fe12967549d1a04e149b 
ae69b059498e8a563c6d64c4aa4cb95e53d76680 
1d97ced2a0d0d27f084e33953402328df523acd1
 95498 fail 888172862fa78505c4e4674c205a06586443d83f 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
c2a17869d5dcd845d646bf4db122cad73596a2be
 95590 fail 497519c4a3bf22c5d7fa2e6da6424e07e6ac543c 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
c2a17869d5dcd845d646bf4db122cad73596a2be
 95516 pass e429f243df2823451c92227317e5fce5f310b674 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
a38c4d7edc665d721882b42546afa7732fbb6228
 95584 pass 1fe949f6d0036130e1c62d2e5bee01d9b4ef0e51 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
922b354718556a6da29cdc45dc66f53fa224b1ac
 95517 fail 888172862fa78505c4e4674c205a06586443d83f 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
c2a17869d5dcd845d646bf4db122cad73596a2be
 95660 pass 1fe949f6d0036130e1c62d2e5bee01d9b4ef0e51 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
268ead59ce10967cf7490353d743ebc1bb7a9a4c
 95655 pass 1fe949f6d0036130e1c62d2e5bee01d9b4ef0e51 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
9ab1bd9ab64799816c8223a5f210b7a767ab4ccc
 95639 fail 1fe949f6d0036130e1c62d2e5bee01d9b4ef0e51 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
c2a17869d5dcd845d646bf4db122cad73596a2be
 95594 pass 1fe949f6d0036130e1c62d2e5bee01d9b4ef0e51 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
e228585d122817f987806145b09de7914c42a5fe
 95650 fail 1fe949f6d0036130e1c62d2e5bee01d9b4ef0e51 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
c52319642bb9069436d4aec75361049f5fac63ed
 95669 fail 1fe949f6d0036130e1c62d2e5bee01d9b4ef0e51 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
c52319642bb9069436d4aec75361049f5fac63ed
 95591 fail 888172862fa78505c4e4674c205a06586443d83f 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
c2a17869d5dcd845d646bf4db122cad73596a2be
 95750 fail 1fe949f6d0036130e1c62d2e5bee01d9b4ef0e51 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
c52319642bb9069436d4aec75361049f5fac63ed
 95741 pass 1fe949f6d0036130e1c62d2e5bee01d9b4ef0e51 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
268ead59ce10967cf7490353d743ebc1bb7a9a4c
 95745 fail 1fe949f6d0036130e1c62d2e5bee01d9b4ef0e51 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
c52319642bb9069436d4aec75361049f5fac63ed
 95748 pass 1fe949f6d0036130e1c62d2e5bee01d9b4ef0e51 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
268ead59ce10967cf7490353d743ebc1bb7a9a4c
Searching for interesting versions
 Result found: flight 86587 (pass), for basis pass
 Result found: flight 95408 (fail), for basis failure
 Repro found: flight 95456 (pass), for basis pass
 Repro found: flight 95498 (fail), for basis failure
 0 revisions at 1fe949f6d0036130e1c62d2e5bee01d9b4ef0e51 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
df553c056104e3dd8a2bd2e72539a57c4c085bae 
44a072f0de0d57c95c2212bbce02888832b7b74f 
268ead59ce10967cf7490353d743ebc1bb7a9a4c
No revisions left to test, checking graph state.
 Result found: flight 95660 (pass), for last pass
 Result found: flight 95669 (fail), for first failure
 Repro found: flight 95741 (pass), for last pass
 Repro found: flight 95745 (fail), for first failure
 Repro found: flight 95748 (pass), for last pass
 Repro found: flight 95750 (fail), for first failure

*** Found and reproduced problem changeset ***

  Bug is in tree:  xen git://xenbits.xen.org/xen.git
  Bug introduced:  c52319642bb9069436d4aec75361049f5fac63ed
  Bug not present: 268ead59ce10967cf7490353d743ebc1bb7a9a4c
  Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/95750/


  commit c52319642bb9069436d4aec75361049f5fac63ed
  Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  Date:   Thu Jun 2 12:08:42 2016 +0100
  
      x86/cpuid: Calculate a guests xfeature_mask from its featureset
      
      libxc current performs the xstate calculation for guests, and provides the
      information to Xen to be used when satisfying CPUID traps.  (There is 
further
      work planned to improve this arrangement, but the worst a buggy toolstack 
can
      do is make junk appear in the cpuid leaves for the guest.)
      
      dom0 however has no policy constructed for it, and certain fields filter
      straight through from hardware.
      
      Linux queries CPUID.7[0].{EAX/EDX} alone to choose a setting for %xcr0, 
which
      is a valid action to take, but features such as MPX and PKRU are not 
supported
      for PV guests.  As a result, Linux, using leaked hardware information, 
fails
      to set %xcr0 on newer Skylake hardware with PKRU support, and crashes.
      
      As an interim solution, dynamically calculate the correct xfeature_mask 
and
      xstate_size to report to the guest for CPUID.7[0] queries.  This ensures 
that
      domains don't see leaked hardware values, even when no cpuid policy is
      provided.
      
      Similarly, CPUID.7[1]{ECX/EDX} represents the applicable settings for 
MSR_XSS.
      As Xen doesn't yet support any XSS states in guests, unconditionally zero
      them.
      
      Reported-by: Luwei Kang <luwei.kang@xxxxxxxxx>
      Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
      Tested-by: Luwei Kang <luwei.kang@xxxxxxxxx>
      Release-acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
      Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

dot: graph is too large for cairo-renderer bitmaps. Scaling by 0.516789 to fit
pnmtopng: 76 colors found
Revision graph left in 
/home/logs/results/bisect/linux-4.1/test-amd64-i386-freebsd10-amd64.guest-start.{dot,ps,png,html,svg}.
----------------------------------------
95750: tolerable ALL FAIL

flight 95750 linux-4.1 real-bisect [real]
http://logs.test-lab.xenproject.org/osstest/logs/95750/

Failures :-/ but no regressions.

Tests which did not succeed,
including tests which could not be run:
 test-amd64-i386-freebsd10-amd64 10 guest-start          fail baseline untested


jobs:
 test-amd64-i386-freebsd10-amd64                              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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