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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [xen-unstable bisection] complete test-amd64-amd64-qemuu-nested-intel
branch xen-unstable xenbranch xen-unstable job test-amd64-amd64-qemuu-nested-intel testid xen-boot/l1 Tree: linux git://xenbits.xen.org/linux-pvops.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/95743/ 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/xen-unstable/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/xen-unstable/test-amd64-amd64-qemuu-nested-intel.xen-boot--l1 --summary-out=tmp/95743.bisection-summary --basis-template=95353 --blessings=real,real-bisect xen-unstable test-amd64-amd64-qemuu-nested-intel xen-boot/l1 Searching for failure / basis pass: 95543 fail [host=godello1] / 95353 [host=italia1] 95309 [host=fiano1] 95281 [host=fiano0] 95242 [host=baroque1] 95222 [host=huxelrebe1] 95203 [host=huxelrebe0] 95174 [host=elbling0] 95129 [host=elbling1] 95086 [host=baroque0] 94967 [host=chardonnay0] 94959 [host=chardonnay1] 94895 [host=fiano1] 94876 [host=baroque1] 94852 [host=italia0] 94802 [host=fiano0] 94789 [host=elbling0] 94780 [host=huxelrebe0] 94770 [host=elbling1] 94756 [host=chardonnay0] 94746 [host=baroque1] 94740 [host=chardonnay1] 94730 [host=baroque0] 94718 [host=huxelrebe1] 94699 [host=elbling0] 94639 [host=italia0] 94616 [host=fiano1] 94610 [host=fiano0] 94580 [host=italia1] 94536 [host=elbling1] 94507 [host=baroque1] 94495 [host=baroque0] 94487 [host=huxelrebe1] 94461 [host=chardonnay1] 94442 [host=fiano1] 94070 [host=chardonnay0] 94021 [host=fiano0] 93963 [host=baroque1] 93920 [host=elbling1] 93873 [host=huxelrebe1] 93813 [host=baroque0] 93725 [host=italia0] 93638 [host=italia1] 93612 [host=huxelrebe0] 93587 [host=fiano1] 93563 [host=fiano0] 93515 [host=chardonnay1] 93496 [host=elbling0] 93408 [host=baroque1] 93381 [host=elbling1] 93364 [host=italia1] 93337 [host=huxelrebe0] 93296 [host=baroque0] 93272 [host=chardonnay0] 93256 [host=fiano1] 93225 [host=fiano0] 93001 [host=huxelrebe1] 92925 [host=baroque0] 92791 [host=elbling1] 92651 [host=italia0] 92543 [host=godello0] 92456 [host=huxelrebe0] 92263 [host=chardonnay1] 92185 ok. Failure / basis pass flights: 95543 / 92185 (tree with no url: minios) (tree with no url: ovmf) (tree with no url: seabios) Tree: linux git://xenbits.xen.org/linux-pvops.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 f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 6e20809727261599e8527c456eb078c0e89139a1 44a072f0de0d57c95c2212bbce02888832b7b74f 6e908ee108caec78f95e639b8ef43ac5dd1d5e45 Basis pass 55d37e17318fd5cf40b62fd02ce6ff75e422d862 c530a75c1e6a472b0eb9558310b518f0dfcd8860 21f6526d1da331611ac5fe12967549d1a04e149b 316a862e5534249a6e6d876b4e203342d3fb870e 4e4689e74d012b737bbca820cfe52c689c7d9cef Generating revisions with ./adhoc-revtuple-generator git://xenbits.xen.org/linux-pvops.git#55d37e17318fd5cf40b62fd02ce6ff75e422d862-f06cb456a442c7df95a4ba6e2f3a341cf925d7cf git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860 git://xenbits.xen.org/qemu-xen-traditional.git#21f6526d1da331611ac5fe12967549d1a04e149b-6e20809727261599e8527c456eb078c0e89139a1 git://xenbits.xen.org/qemu-xen.git#316a862e5534249a6e6d876b4e203342d3fb870e-44a072f0de0d57c95c2212bbce02888832b7b74f git://xenbits.xen.org/xen.git#4e4689e74d012b737bbca820cfe52c689c7d9cef-6e908ee108caec78f95e639b8ef43ac5dd1d5e45 Loaded 10934 nodes in revision graph Searching for test results: 92185 pass 55d37e17318fd5cf40b62fd02ce6ff75e422d862 c530a75c1e6a472b0eb9558310b518f0dfcd8860 21f6526d1da331611ac5fe12967549d1a04e149b 316a862e5534249a6e6d876b4e203342d3fb870e 4e4689e74d012b737bbca820cfe52c689c7d9cef 92263 [host=chardonnay1] 92456 [host=huxelrebe0] 92543 [host=godello0] 92651 [host=italia0] 92791 [host=elbling1] 92925 [host=baroque0] 93001 [host=huxelrebe1] 93225 [host=fiano0] 93256 [host=fiano1] 93272 [host=chardonnay0] 93296 [host=baroque0] 93364 [host=italia1] 93337 [host=huxelrebe0] 93381 [host=elbling1] 93408 [host=baroque1] 93496 [host=elbling0] 93515 [host=chardonnay1] 93563 [host=fiano0] 93587 [host=fiano1] 93612 [host=huxelrebe0] 93638 [host=italia1] 93725 [host=italia0] 93813 [host=baroque0] 93873 [host=huxelrebe1] 93963 [host=baroque1] 93920 [host=elbling1] 94021 [host=fiano0] 94070 [host=chardonnay0] 94442 [host=fiano1] 94461 [host=chardonnay1] 94495 [host=baroque0] 94487 [host=huxelrebe1] 94507 [host=baroque1] 94536 [host=elbling1] 94563 [host=italia1] 94581 [host=italia1] 94585 [host=italia1] 94580 [host=italia1] 94610 [host=fiano0] 94616 [host=fiano1] 94639 [host=italia0] 94699 [host=elbling0] 94718 [host=huxelrebe1] 94740 [host=chardonnay1] 94730 [host=baroque0] 94746 [host=baroque1] 94756 [host=chardonnay0] 94770 [host=elbling1] 94789 [host=elbling0] 94780 [host=huxelrebe0] 94802 [host=fiano0] 94852 [host=italia0] 94876 [host=baroque1] 94959 [host=chardonnay1] 94895 [host=fiano1] 94905 [host=italia1] 94967 [host=chardonnay0] 95086 [host=baroque0] 95098 [] 95129 [host=elbling1] 95174 [host=elbling0] 95203 [host=huxelrebe0] 95222 [host=huxelrebe1] 95242 [host=baroque1] 95281 [host=fiano0] 95309 [host=fiano1] 95353 [host=italia1] 95469 fail f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 74a7ec196f819271dff2676a79ef916c50d88342 95541 pass 55d37e17318fd5cf40b62fd02ce6ff75e422d862 c530a75c1e6a472b0eb9558310b518f0dfcd8860 21f6526d1da331611ac5fe12967549d1a04e149b 316a862e5534249a6e6d876b4e203342d3fb870e 4e4689e74d012b737bbca820cfe52c689c7d9cef 95543 fail f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 6e20809727261599e8527c456eb078c0e89139a1 44a072f0de0d57c95c2212bbce02888832b7b74f 6e908ee108caec78f95e639b8ef43ac5dd1d5e45 95601 fail f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 74a7ec196f819271dff2676a79ef916c50d88342 95607 pass 48763742b1bceb119b04656b8dd06e0617dfa89a c530a75c1e6a472b0eb9558310b518f0dfcd8860 21f6526d1da331611ac5fe12967549d1a04e149b 62b3d206425c245ed0a020390a64640d40d97471 60935158cbf74f4cd6f69190ced9be0391cfa506 95610 pass c977650a67e6ca6c3cff9548b031d072d00db80a c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae c2092c20d6ad5e26375ec680c504fe584ae5d4b5 1260c7fdb91dfe0033d6eef0e94b93607be020a9 95702 pass 55d37e17318fd5cf40b62fd02ce6ff75e422d862 c530a75c1e6a472b0eb9558310b518f0dfcd8860 21f6526d1da331611ac5fe12967549d1a04e149b 316a862e5534249a6e6d876b4e203342d3fb870e 4e4689e74d012b737bbca820cfe52c689c7d9cef 95730 fail f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c52319642bb9069436d4aec75361049f5fac63ed 95706 fail f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 6e20809727261599e8527c456eb078c0e89139a1 44a072f0de0d57c95c2212bbce02888832b7b74f 6e908ee108caec78f95e639b8ef43ac5dd1d5e45 95710 pass f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f ca04e01490acc333b43cfc784751d09134e65e18 95734 pass f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 268ead59ce10967cf7490353d743ebc1bb7a9a4c 95737 fail f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c52319642bb9069436d4aec75361049f5fac63ed 95714 pass f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f fc326b7480ea4d7ca8662b185cc296cac27eb8c9 95719 fail f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f bacbf0cb73490ff12dba9436e4a038a4774a0037 95723 fail f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f b9daff9d811285f1e40669bc621c2241793f7a95 95739 pass f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 268ead59ce10967cf7490353d743ebc1bb7a9a4c 95726 pass f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 268ead59ce10967cf7490353d743ebc1bb7a9a4c 95743 fail f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c52319642bb9069436d4aec75361049f5fac63ed Searching for interesting versions Result found: flight 92185 (pass), for basis pass Result found: flight 95543 (fail), for basis failure Repro found: flight 95702 (pass), for basis pass Repro found: flight 95706 (fail), for basis failure 0 revisions at f06cb456a442c7df95a4ba6e2f3a341cf925d7cf c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 268ead59ce10967cf7490353d743ebc1bb7a9a4c No revisions left to test, checking graph state. Result found: flight 95726 (pass), for last pass Result found: flight 95730 (fail), for first failure Repro found: flight 95734 (pass), for last pass Repro found: flight 95737 (fail), for first failure Repro found: flight 95739 (pass), for last pass Repro found: flight 95743 (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/95743/ 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> pnmtopng: 93 colors found Revision graph left in /home/logs/results/bisect/xen-unstable/test-amd64-amd64-qemuu-nested-intel.xen-boot--l1.{dot,ps,png,html,svg}. ---------------------------------------- 95743: tolerable ALL FAIL flight 95743 xen-unstable real-bisect [real] http://logs.test-lab.xenproject.org/osstest/logs/95743/ 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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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