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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [linux-4.9 bisection] complete test-amd64-amd64-xl-xsm
branch xen-unstable xenbranch xen-unstable job test-amd64-amd64-xl-xsm testid xen-boot 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: linux git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git Bug introduced: 944e0fc51a89c9827b98813d65dc083274777c7f Bug not present: b2d748b3a8d4e936a7e6e5fc9f04e2f9696efcc5 Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/123474/ commit 944e0fc51a89c9827b98813d65dc083274777c7f Author: David Woodhouse <dwmw@xxxxxxxxxxxx> Date: Sun May 20 20:51:10 2018 +0100 x86/amd: don't set X86_BUG_SYSRET_SS_ATTRS when running under Xen commit def9331a12977770cc6132d79f8e6565871e8e38 upstream When running as Xen pv guest X86_BUG_SYSRET_SS_ATTRS must not be set on AMD cpus. This bug/feature bit is kind of special as it will be used very early when switching threads. Setting the bit and clearing it a little bit later leaves a critical window where things can go wrong. This time window has enlarged a little bit by using setup_clear_cpu_cap() instead of the hypervisor's set_cpu_features callback. It seems this larger window now makes it rather easy to hit the problem. The proper solution is to never set the bit in case of Xen. Signed-off-by: Juergen Gross <jgross@xxxxxxxx> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx> Acked-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Signed-off-by: Juergen Gross <jgross@xxxxxxxx> Signed-off-by: David Woodhouse <dwmw@xxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> For bisection revision-tuple graph see: http://logs.test-lab.xenproject.org/osstest/results/bisect/linux-4.9/test-amd64-amd64-xl-xsm.xen-boot.html Revision IDs in each graph node refer, respectively, to the Trees above. ---------------------------------------- Running cs-bisection-step --graph-out=/home/logs/results/bisect/linux-4.9/test-amd64-amd64-xl-xsm.xen-boot --summary-out=tmp/123474.bisection-summary --basis-template=122969 --blessings=real,real-bisect linux-4.9 test-amd64-amd64-xl-xsm xen-boot Searching for failure / basis pass: 123350 fail [host=pinot0] / 122969 [host=huxelrebe0] 122893 [host=chardonnay1] 122824 [host=elbling1] 122564 [host=huxelrebe0] 122519 [host=elbling1] 122398 [host=chardonnay0] 122289 ok. Failure / basis pass flights: 123350 / 122289 (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 aa4b4ace9ce02cf164e0982739e9565d6214cfa9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 Basis pass cc0eb4dd504b8a0adab865a9488297aca63013ba c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 5c3fdee026a204a59cb392e43a313ab558de9682 82540b66ceb9318aa185f2488cbbbe479694de8f Generating revisions with ./adhoc-revtuple-generator git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git#cc0eb4dd504b8a0adab865a9488297aca63013ba-aa4b4ace9ce02cf164e0982739e9565d6214cfa9 git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860 git://xenbits.xen.org/qemu-xen-traditional.git#c8ea0457495342c417c3dc033bba25148b279f60-c8ea0457495342c417c3dc033bba25148b279f60 git://xenbits.xen.org/qemu-xen.git#5c3fdee026a204a59cb392e43a313ab558de9682-43139135a8938de44f66333831d3a8655d07663a git://xenbits.xen.org/xen.git#82540b66ceb9318aa185f2488cbbbe479694de8f-fc5805daef091240cd5fc06634a8bcdb2f3bb843 Loaded 3004 nodes in revision graph Searching for test results: 122272 [host=elbling1] 122289 pass cc0eb4dd504b8a0adab865a9488297aca63013ba c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 5c3fdee026a204a59cb392e43a313ab558de9682 82540b66ceb9318aa185f2488cbbbe479694de8f 122398 [host=chardonnay0] 122519 [host=elbling1] 122564 [host=huxelrebe0] 122824 [host=elbling1] 122893 [host=chardonnay1] 122969 [host=huxelrebe0] 123074 fail irrelevant 123150 fail irrelevant 123209 fail irrelevant 123257 fail aa4b4ace9ce02cf164e0982739e9565d6214cfa9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123298 fail aa4b4ace9ce02cf164e0982739e9565d6214cfa9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123350 fail aa4b4ace9ce02cf164e0982739e9565d6214cfa9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123418 fail aa4b4ace9ce02cf164e0982739e9565d6214cfa9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123415 pass cc0eb4dd504b8a0adab865a9488297aca63013ba c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 5c3fdee026a204a59cb392e43a313ab558de9682 82540b66ceb9318aa185f2488cbbbe479694de8f 123421 pass e57bde8bbd4ed072120d3fc088fc147ccc29bed4 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 5c3fdee026a204a59cb392e43a313ab558de9682 0306a1311d02ea52b4a9a9bc339f8bab9354c5e3 123425 pass dbab65be6bdea68b6a201d03334b44a02860dd2c c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123428 fail 74a4c09d4b05c67ed6bd6aed088a5552f4f64aaa c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123434 fail 99318eca2c7ab3250b9614043b9ac6077ff2cb46 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123458 pass b2d748b3a8d4e936a7e6e5fc9f04e2f9696efcc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123437 pass a8330db3fb9b434471b861927e8e965835005929 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123439 fail 298d5db170f7d8430498417fa96e7472b620dcea c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123466 fail 944e0fc51a89c9827b98813d65dc083274777c7f c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123441 pass 70b4b1451086218a32122cf9fc7f92ccfb9ae4dc c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123446 pass 92291247b6069bce1c9c695b0f3496be4303b9fc c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123448 pass b2d748b3a8d4e936a7e6e5fc9f04e2f9696efcc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123469 pass b2d748b3a8d4e936a7e6e5fc9f04e2f9696efcc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123453 fail 944e0fc51a89c9827b98813d65dc083274777c7f c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 123474 fail 944e0fc51a89c9827b98813d65dc083274777c7f c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 Searching for interesting versions Result found: flight 122289 (pass), for basis pass Result found: flight 123257 (fail), for basis failure Repro found: flight 123415 (pass), for basis pass Repro found: flight 123418 (fail), for basis failure 0 revisions at b2d748b3a8d4e936a7e6e5fc9f04e2f9696efcc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a fc5805daef091240cd5fc06634a8bcdb2f3bb843 No revisions left to test, checking graph state. Result found: flight 123448 (pass), for last pass Result found: flight 123453 (fail), for first failure Repro found: flight 123458 (pass), for last pass Repro found: flight 123466 (fail), for first failure Repro found: flight 123469 (pass), for last pass Repro found: flight 123474 (fail), for first failure *** Found and reproduced problem changeset *** Bug is in tree: linux git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git Bug introduced: 944e0fc51a89c9827b98813d65dc083274777c7f Bug not present: b2d748b3a8d4e936a7e6e5fc9f04e2f9696efcc5 Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/123474/ commit 944e0fc51a89c9827b98813d65dc083274777c7f Author: David Woodhouse <dwmw@xxxxxxxxxxxx> Date: Sun May 20 20:51:10 2018 +0100 x86/amd: don't set X86_BUG_SYSRET_SS_ATTRS when running under Xen commit def9331a12977770cc6132d79f8e6565871e8e38 upstream When running as Xen pv guest X86_BUG_SYSRET_SS_ATTRS must not be set on AMD cpus. This bug/feature bit is kind of special as it will be used very early when switching threads. Setting the bit and clearing it a little bit later leaves a critical window where things can go wrong. This time window has enlarged a little bit by using setup_clear_cpu_cap() instead of the hypervisor's set_cpu_features callback. It seems this larger window now makes it rather easy to hit the problem. The proper solution is to never set the bit in case of Xen. Signed-off-by: Juergen Gross <jgross@xxxxxxxx> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx> Acked-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Signed-off-by: Juergen Gross <jgross@xxxxxxxx> Signed-off-by: David Woodhouse <dwmw@xxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> dot: graph is too large for cairo-renderer bitmaps. Scaling by 0.782813 to fit pnmtopng: 70 colors found Revision graph left in /home/logs/results/bisect/linux-4.9/test-amd64-amd64-xl-xsm.xen-boot.{dot,ps,png,html,svg}. ---------------------------------------- 123474: tolerable ALL FAIL flight 123474 linux-4.9 real-bisect [real] http://logs.test-lab.xenproject.org/osstest/logs/123474/ Failures :-/ but no regressions. Tests which did not succeed, including tests which could not be run: test-amd64-amd64-xl-xsm 7 xen-boot fail baseline untested jobs: test-amd64-amd64-xl-xsm 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@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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