* [linux-3.14 bisection] complete test-amd64-amd64-qemuu-nested-intel
@ 2016-06-14 7:26 osstest service owner
0 siblings, 0 replies; only message in thread
From: osstest service owner @ 2016-06-14 7:26 UTC (permalink / raw)
To: xen-devel, osstest-admin
branch xen-unstable
xenbranch xen-unstable
job test-amd64-amd64-qemuu-nested-intel
testid xen-boot/l1
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/95708/
commit c52319642bb9069436d4aec75361049f5fac63ed
Author: Andrew Cooper <andrew.cooper3@citrix.com>
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@intel.com>
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Tested-by: Luwei Kang <luwei.kang@intel.com>
Release-acked-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
For bisection revision-tuple graph see:
http://logs.test-lab.xenproject.org/osstest/results/bisect/linux-3.14/test-amd64-amd64-qemuu-nested-intel.xen-boot--l1.html
Revision IDs in each graph node refer, respectively, to the Trees above.
----------------------------------------
Running cs-bisection-step --graph-out=/home/logs/results/bisect/linux-3.14/test-amd64-amd64-qemuu-nested-intel.xen-boot--l1 --summary-out=tmp/95708.bisection-summary --basis-template=95164 --blessings=real,real-bisect linux-3.14 test-amd64-amd64-qemuu-nested-intel xen-boot/l1
Searching for failure / basis pass:
95514 fail [host=huxelrebe1] / 95164 [host=baroque1] 94568 [host=chardonnay0] 94027 [host=chardonnay1] 93503 [host=italia1] 92198 [host=godello1] 91148 [host=chardonnay1] 86411 [host=huxelrebe0] 85851 [host=baroque0] 85253 [host=chardonnay1] 84125 [host=italia1] 83009 [host=baroque1] 79698 [host=chardonnay1] 79562 [host=italia0] 79452 [host=godello0] 79397 [host=godello1] 78986 [host=baroque0] 66306 [host=chardonnay1] 65787 [host=godello0] 65709 [host=godello0] 65633 [host=godello0] template as basis? using template as basis.
Failure / basis pass flights: 95514 / 95164
(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 022aafd04696a3c6b7ad47ab83a9650646287bf8 c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c2a17869d5dcd845d646bf4db122cad73596a2be
Basis pass f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 1dda826420fff634983e94f97fb8411486acda0d
Generating revisions with ./adhoc-revtuple-generator git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git#f06cb456a442c7df95a4ba6e2f3a341cf925d7cf-022aafd04696a3c6b7ad47ab83a9650646287bf8 git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860 git://xenbits.xen.org/qemu-xen-traditional.git#df553c056104e3dd8a2bd2e72539a57c4c085bae-df553c056104e3dd8a2bd2e72539a57c4c085bae git://xenbits.xen.org/qemu-xen.git#44a072f0de0d57c95c2212bbce02888832b7b74f-44a072f0de0d57c95c2212bbce02888832b7b74f git://xenbits.xen.org/xen.git#1dda826420fff634983e94f97fb8411486acda0d-c2a17869d5dcd845d646bf4db122cad73596a2be
Loaded 2001 nodes in revision graph
Searching for test results:
95164 [host=baroque1]
95407 fail 022aafd04696a3c6b7ad47ab83a9650646287bf8 c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c2a17869d5dcd845d646bf4db122cad73596a2be
95453 fail 022aafd04696a3c6b7ad47ab83a9650646287bf8 c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c2a17869d5dcd845d646bf4db122cad73596a2be
95514 fail 022aafd04696a3c6b7ad47ab83a9650646287bf8 c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c2a17869d5dcd845d646bf4db122cad73596a2be
95664 fail 022aafd04696a3c6b7ad47ab83a9650646287bf8 c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c2a17869d5dcd845d646bf4db122cad73596a2be
95656 fail 022aafd04696a3c6b7ad47ab83a9650646287bf8 c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c2a17869d5dcd845d646bf4db122cad73596a2be
95697 pass f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 268ead59ce10967cf7490353d743ebc1bb7a9a4c
95677 pass f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f e228585d122817f987806145b09de7914c42a5fe
95647 pass f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 1dda826420fff634983e94f97fb8411486acda0d
95659 pass f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 1dda826420fff634983e94f97fb8411486acda0d
95671 fail 79925b261448de46f9b4a63fd7bc957953dda170 c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c2a17869d5dcd845d646bf4db122cad73596a2be
95668 pass f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f f7653d0d151732dd6dd8fcf84d94179fa8b6d4a5
95687 pass f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 268ead59ce10967cf7490353d743ebc1bb7a9a4c
95680 fail f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f b9daff9d811285f1e40669bc621c2241793f7a95
95691 fail f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c52319642bb9069436d4aec75361049f5fac63ed
95699 fail f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c52319642bb9069436d4aec75361049f5fac63ed
95704 pass f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 268ead59ce10967cf7490353d743ebc1bb7a9a4c
95708 fail f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c52319642bb9069436d4aec75361049f5fac63ed
Searching for interesting versions
Result found: flight 95647 (pass), for basis pass
Result found: flight 95656 (fail), for basis failure
Repro found: flight 95659 (pass), for basis pass
Repro found: flight 95664 (fail), for basis failure
0 revisions at f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 268ead59ce10967cf7490353d743ebc1bb7a9a4c
No revisions left to test, checking graph state.
Result found: flight 95687 (pass), for last pass
Result found: flight 95691 (fail), for first failure
Repro found: flight 95697 (pass), for last pass
Repro found: flight 95699 (fail), for first failure
Repro found: flight 95704 (pass), for last pass
Repro found: flight 95708 (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/95708/
commit c52319642bb9069436d4aec75361049f5fac63ed
Author: Andrew Cooper <andrew.cooper3@citrix.com>
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@intel.com>
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Tested-by: Luwei Kang <luwei.kang@intel.com>
Release-acked-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Revision graph left in /home/logs/results/bisect/linux-3.14/test-amd64-amd64-qemuu-nested-intel.xen-boot--l1.{dot,ps,png,html,svg}.
----------------------------------------
95708: tolerable ALL FAIL
flight 95708 linux-3.14 real-bisect [real]
http://logs.test-lab.xenproject.org/osstest/logs/95708/
Failures :-/ but no regressions.
Tests which did not succeed,
including tests which could not be run:
test-amd64-amd64-qemuu-nested-intel 13 xen-boot/l1 fail baseline untested
jobs:
test-amd64-amd64-qemuu-nested-intel 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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Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
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