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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [linux-3.18 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://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/95765/ 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-3.18/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-3.18/test-amd64-amd64-qemuu-nested-intel.xen-boot--l1 --summary-out=tmp/95765.bisection-summary --basis-template=94728 --blessings=real,real-bisect linux-3.18 test-amd64-amd64-qemuu-nested-intel xen-boot/l1 Searching for failure / basis pass: 95597 fail [host=baroque0] / 94728 [host=italia1] 94153 [host=chardonnay0] 94083 [host=fiano1] 94056 [host=huxelrebe0] 94035 [host=italia0] 92982 [host=huxelrebe0] 92189 [host=italia0] 92139 [host=fiano1] 91757 [host=chardonnay0] 91675 [host=godello0] 91589 [host=chardonnay1] 91420 [host=fiano0] 91272 [host=huxelrebe1] 91130 [host=huxelrebe0] 90979 ok. Failure / basis pass flights: 95597 / 90979 (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 b5076139991c6b12c62346d9880eec1d4227d99f c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c2a17869d5dcd845d646bf4db122cad73596a2be Basis pass b36eba9b4dd4344ed51b8f644049aeac606ccff2 c530a75c1e6a472b0eb9558310b518f0dfcd8860 21f6526d1da331611ac5fe12967549d1a04e149b 316a862e5534249a6e6d876b4e203342d3fb870e a6f2cdb633bf519244a16674031b8034b581ba7f Generating revisions with ./adhoc-revtuple-generator git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git#b36eba9b4dd4344ed51b8f644049aeac606ccff2-b5076139991c6b12c62346d9880eec1d4227d99f 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: 89247 [host=italia1] 89339 [host=elbling0] 90846 [host=godello1] 90979 pass b36eba9b4dd4344ed51b8f644049aeac606ccff2 c530a75c1e6a472b0eb9558310b518f0dfcd8860 21f6526d1da331611ac5fe12967549d1a04e149b 316a862e5534249a6e6d876b4e203342d3fb870e a6f2cdb633bf519244a16674031b8034b581ba7f 91130 [host=huxelrebe0] 91272 [host=huxelrebe1] 91420 [host=fiano0] 91589 [host=chardonnay1] 91675 [host=godello0] 91757 [host=chardonnay0] 92189 [host=italia0] 92139 [host=fiano1] 92982 [host=huxelrebe0] 94035 [host=italia0] 94083 [host=fiano1] 94056 [host=huxelrebe0] 94153 [host=chardonnay0] 94728 [host=italia1] 95457 pass b36eba9b4dd4344ed51b8f644049aeac606ccff2 c530a75c1e6a472b0eb9558310b518f0dfcd8860 21f6526d1da331611ac5fe12967549d1a04e149b 316a862e5534249a6e6d876b4e203342d3fb870e a6f2cdb633bf519244a16674031b8034b581ba7f 95406 fail b5076139991c6b12c62346d9880eec1d4227d99f c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c2a17869d5dcd845d646bf4db122cad73596a2be 95458 fail b5076139991c6b12c62346d9880eec1d4227d99f c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c2a17869d5dcd845d646bf4db122cad73596a2be 95524 pass d028e82749093b973b194a3152b278a3bb49b1aa c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f bbfd2d6ccb31a3aeea49c8f9c7884792ddc26e3b 95511 pass 88965e61d381a0d3cd3e0d49aa5fb6481a9447cc c530a75c1e6a472b0eb9558310b518f0dfcd8860 21f6526d1da331611ac5fe12967549d1a04e149b 316a862e5534249a6e6d876b4e203342d3fb870e ac703c285a4fbfcb85c19364ea0c67780bf16c2d 95507 fail b5076139991c6b12c62346d9880eec1d4227d99f c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c2a17869d5dcd845d646bf4db122cad73596a2be 95518 pass d123375e55cb78061df3e8f2bf1b0fb4ad59f4ac c530a75c1e6a472b0eb9558310b518f0dfcd8860 21f6526d1da331611ac5fe12967549d1a04e149b 62b3d206425c245ed0a020390a64640d40d97471 2656bc7b0c145932e1af80d54d48975edd081997 95582 fail 17e4101162b8eaedde73ef7b6723303b4fb86ce6 c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c52319642bb9069436d4aec75361049f5fac63ed 95521 fail b5076139991c6b12c62346d9880eec1d4227d99f c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c2a17869d5dcd845d646bf4db122cad73596a2be 95588 pass 887f64e66000496335a0bd894d57f45a6b37076b c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f e4a4a8495733f5bed64f8847642f1c182c04e3f4 95592 pass 887f64e66000496335a0bd894d57f45a6b37076b c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f e228585d122817f987806145b09de7914c42a5fe 95661 fail 4595d851f38f6c457877f2fa52935a54e6030c5e c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c52319642bb9069436d4aec75361049f5fac63ed 95667 pass 887f64e66000496335a0bd894d57f45a6b37076b c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 268ead59ce10967cf7490353d743ebc1bb7a9a4c 95596 fail 986374ca1035875bab63d1803fc453f2c49de2ef c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c52319642bb9069436d4aec75361049f5fac63ed 95675 fail 887f64e66000496335a0bd894d57f45a6b37076b c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c52319642bb9069436d4aec75361049f5fac63ed 95597 fail b5076139991c6b12c62346d9880eec1d4227d99f c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c2a17869d5dcd845d646bf4db122cad73596a2be 95751 pass 887f64e66000496335a0bd894d57f45a6b37076b c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 268ead59ce10967cf7490353d743ebc1bb7a9a4c 95765 fail 887f64e66000496335a0bd894d57f45a6b37076b c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c52319642bb9069436d4aec75361049f5fac63ed 95753 fail 887f64e66000496335a0bd894d57f45a6b37076b c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f c52319642bb9069436d4aec75361049f5fac63ed 95761 pass 887f64e66000496335a0bd894d57f45a6b37076b c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 268ead59ce10967cf7490353d743ebc1bb7a9a4c Searching for interesting versions Result found: flight 90979 (pass), for basis pass Result found: flight 95406 (fail), for basis failure Repro found: flight 95457 (pass), for basis pass Repro found: flight 95458 (fail), for basis failure 0 revisions at 887f64e66000496335a0bd894d57f45a6b37076b c530a75c1e6a472b0eb9558310b518f0dfcd8860 df553c056104e3dd8a2bd2e72539a57c4c085bae 44a072f0de0d57c95c2212bbce02888832b7b74f 268ead59ce10967cf7490353d743ebc1bb7a9a4c No revisions left to test, checking graph state. Result found: flight 95667 (pass), for last pass Result found: flight 95675 (fail), for first failure Repro found: flight 95751 (pass), for last pass Repro found: flight 95753 (fail), for first failure Repro found: flight 95761 (pass), for last pass Repro found: flight 95765 (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/95765/ 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 0.588065 to fit pnmtopng: 78 colors found Revision graph left in /home/logs/results/bisect/linux-3.18/test-amd64-amd64-qemuu-nested-intel.xen-boot--l1.{dot,ps,png,html,svg}. ---------------------------------------- 95765: tolerable ALL FAIL flight 95765 linux-3.18 real-bisect [real] http://logs.test-lab.xenproject.org/osstest/logs/95765/ 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 _______________________________________________ osstest-output mailing list osstest-output@xxxxxxxxxxxxxxxxxxxx http://lists.xenproject.org/cgi-bin/mailman/listinfo/osstest-output
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