From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57167) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cZj6a-0008FF-Sj for qemu-devel@nongnu.org; Fri, 03 Feb 2017 14:01:10 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cZj6W-0007wV-00 for qemu-devel@nongnu.org; Fri, 03 Feb 2017 14:01:08 -0500 Received: from indium.canonical.com ([91.189.90.7]:56337) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cZj6V-0007wP-MV for qemu-devel@nongnu.org; Fri, 03 Feb 2017 14:01:03 -0500 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.76 #1 (Debian)) id 1cZj6T-0007bl-Vn for ; Fri, 03 Feb 2017 19:01:02 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 493732E80AF for ; Fri, 3 Feb 2017 19:01:01 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Fri, 03 Feb 2017 18:55:16 -0000 From: "Matwey V. Kornilov" Reply-To: Bug 1661386 <1661386@bugs.launchpad.net> Sender: bounces@canonical.com References: <20170202204510.26617.69309.malonedeb@wampee.canonical.com> <20170203183449.20066.65078.malone@gac.canonical.com> Message-Id: Errors-To: bounces@canonical.com Subject: Re: [Qemu-devel] [Bug 1661386] Re: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org 2017-02-03 21:34 GMT+03:00 Dr. David Alan Gilbert : > Hi, > OK, lets see: > > kvm_put_msrs: ret=3D18 expected=3D105 > > so I think it's one of the MSRs around 18 that it's upset at: > > kvm_msr_entry_add: @17 index=3D4b564d03 value=3D0 > > 41:#define MSR_KVM_STEAL_TIME 0x4b564d03 > > kvm_msr_entry_add: @18 index=3D38d value=3D0 > > #define MSR_CORE_PERF_FIXED_CTR_CTRL 0x38d > > So my guess is it's the steal time thing. > > 1) You didn't say what kernel your host was running - please tell me > I think that steal time thing went into the kernel ~3.0 Sorry, I've missed. I tested both 3.16 and 4.1. > 2) try starting qemu with -cpu host,-kvm_steal_time and/or -cpu host,-perfctr_core Nothing of this helps. > 3) If those don't work, in kvm_put_msrs try hacking out the lines: > > if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_STEAL_TIME)) { > kvm_msr_entry_add(cpu, MSR_KVM_STEAL_TIME, env->steal_time_ms= r); > } > > and turning the : > > if (has_msr_architectural_pmu) { > > into if (0) { > This also doesn't helps. But It seems to be failed in other line now. kvm_msr_entry_add: @0 index=3D174 value=3D0 kvm_msr_entry_add: @1 index=3D175 value=3D0 kvm_msr_entry_add: @2 index=3D176 value=3D0 kvm_msr_entry_add: @3 index=3D277 value=3D7040600070406 kvm_msr_entry_add: @4 index=3Dc0000081 value=3D0 kvm_msr_entry_add: @5 index=3Dc0010117 value=3D0 kvm_msr_entry_add: @6 index=3D3b value=3D0 kvm_msr_entry_add: @7 index=3D1a0 value=3D1 kvm_msr_entry_add: @8 index=3Dc0000083 value=3D0 kvm_msr_entry_add: @9 index=3Dc0000102 value=3D0 kvm_msr_entry_add: @10 index=3Dc0000084 value=3D0 kvm_msr_entry_add: @11 index=3Dc0000082 value=3D0 kvm_msr_entry_add: @12 index=3D10 value=3D0 kvm_msr_entry_add: @13 index=3D12 value=3D0 kvm_msr_entry_add: @14 index=3D11 value=3D0 kvm_msr_entry_add: @15 index=3D4b564d02 value=3D0 kvm_msr_entry_add: @16 index=3D4b564d04 value=3D0 kvm_msr_entry_add: @17 index=3D2ff value=3D0 kvm_msr_entry_add: @18 index=3D250 value=3D0 kvm_msr_entry_add: @19 index=3D258 value=3D0 kvm_msr_entry_add: @20 index=3D259 value=3D0 kvm_msr_entry_add: @21 index=3D268 value=3D0 kvm_msr_entry_add: @22 index=3D269 value=3D0 kvm_msr_entry_add: @23 index=3D26a value=3D0 kvm_msr_entry_add: @24 index=3D26b value=3D0 kvm_msr_entry_add: @25 index=3D26c value=3D0 kvm_msr_entry_add: @26 index=3D26d value=3D0 kvm_msr_entry_add: @27 index=3D26e value=3D0 kvm_msr_entry_add: @28 index=3D26f value=3D0 kvm_msr_entry_add: @29 index=3D200 value=3D0 kvm_msr_entry_add: @30 index=3D201 value=3D0 kvm_msr_entry_add: @31 index=3D202 value=3D0 kvm_msr_entry_add: @32 index=3D203 value=3D0 kvm_msr_entry_add: @33 index=3D204 value=3D0 kvm_msr_entry_add: @34 index=3D205 value=3D0 kvm_msr_entry_add: @35 index=3D206 value=3D0 kvm_msr_entry_add: @36 index=3D207 value=3D0 kvm_msr_entry_add: @37 index=3D208 value=3D0 kvm_msr_entry_add: @38 index=3D209 value=3D0 kvm_msr_entry_add: @39 index=3D20a value=3D0 kvm_msr_entry_add: @40 index=3D20b value=3D0 kvm_msr_entry_add: @41 index=3D20c value=3D0 kvm_msr_entry_add: @42 index=3D20d value=3D0 kvm_msr_entry_add: @43 index=3D20e value=3D0 kvm_msr_entry_add: @44 index=3D20f value=3D0 kvm_msr_entry_add: @45 index=3D17a value=3D0 kvm_msr_entry_add: @46 index=3D17b value=3Dffffffffffffffff kvm_msr_entry_add: @47 index=3D400 value=3Dffffffffffffffff kvm_msr_entry_add: @48 index=3D401 value=3D0 kvm_msr_entry_add: @49 index=3D402 value=3D0 kvm_msr_entry_add: @50 index=3D403 value=3D0 kvm_msr_entry_add: @51 index=3D404 value=3Dffffffffffffffff kvm_msr_entry_add: @52 index=3D405 value=3D0 kvm_msr_entry_add: @53 index=3D406 value=3D0 kvm_msr_entry_add: @54 index=3D407 value=3D0 kvm_msr_entry_add: @55 index=3D408 value=3Dffffffffffffffff kvm_msr_entry_add: @56 index=3D409 value=3D0 kvm_msr_entry_add: @57 index=3D40a value=3D0 kvm_msr_entry_add: @58 index=3D40b value=3D0 kvm_msr_entry_add: @59 index=3D40c value=3Dffffffffffffffff kvm_msr_entry_add: @60 index=3D40d value=3D0 kvm_msr_entry_add: @61 index=3D40e value=3D0 kvm_msr_entry_add: @62 index=3D40f value=3D0 kvm_msr_entry_add: @63 index=3D410 value=3Dffffffffffffffff kvm_msr_entry_add: @64 index=3D411 value=3D0 kvm_msr_entry_add: @65 index=3D412 value=3D0 kvm_msr_entry_add: @66 index=3D413 value=3D0 kvm_msr_entry_add: @67 index=3D414 value=3Dffffffffffffffff kvm_msr_entry_add: @68 index=3D415 value=3D0 kvm_msr_entry_add: @69 index=3D416 value=3D0 kvm_msr_entry_add: @70 index=3D417 value=3D0 kvm_msr_entry_add: @71 index=3D418 value=3Dffffffffffffffff kvm_msr_entry_add: @72 index=3D419 value=3D0 kvm_msr_entry_add: @73 index=3D41a value=3D0 kvm_msr_entry_add: @74 index=3D41b value=3D0 kvm_msr_entry_add: @75 index=3D41c value=3Dffffffffffffffff kvm_msr_entry_add: @76 index=3D41d value=3D0 kvm_msr_entry_add: @77 index=3D41e value=3D0 kvm_msr_entry_add: @78 index=3D41f value=3D0 kvm_msr_entry_add: @79 index=3D420 value=3Dffffffffffffffff kvm_msr_entry_add: @80 index=3D421 value=3D0 kvm_msr_entry_add: @81 index=3D422 value=3D0 kvm_msr_entry_add: @82 index=3D423 value=3D0 kvm_msr_entry_add: @83 index=3D424 value=3Dffffffffffffffff kvm_msr_entry_add: @84 index=3D425 value=3D0 kvm_msr_entry_add: @85 index=3D426 value=3D0 kvm_msr_entry_add: @86 index=3D427 value=3D0 kvm_put_msrs: ret=3D87 expected=3D87 kvm_msr_entry_add: @0 index=3D6e0 value=3D0 kvm_msr_entry_add: @0 index=3D174 value=3D0 kvm_msr_entry_add: @1 index=3D175 value=3D0 kvm_msr_entry_add: @2 index=3D176 value=3D0 kvm_msr_entry_add: @3 index=3D277 value=3D0 kvm_msr_entry_add: @4 index=3Dc0000081 value=3D0 kvm_msr_entry_add: @5 index=3Dc0010117 value=3D0 kvm_msr_entry_add: @6 index=3D3b value=3D0 kvm_msr_entry_add: @7 index=3D6e0 value=3D0 kvm_msr_entry_add: @8 index=3D1a0 value=3D0 kvm_msr_entry_add: @9 index=3D10 value=3D0 kvm_msr_entry_add: @10 index=3Dc0000083 value=3D0 kvm_msr_entry_add: @11 index=3Dc0000102 value=3D0 kvm_msr_entry_add: @12 index=3Dc0000084 value=3D0 kvm_msr_entry_add: @13 index=3Dc0000082 value=3D0 kvm_msr_entry_add: @14 index=3D12 value=3D0 kvm_msr_entry_add: @15 index=3D11 value=3D0 kvm_msr_entry_add: @16 index=3D4b564d02 value=3D0 kvm_msr_entry_add: @17 index=3D4b564d04 value=3D0 kvm_msr_entry_add: @18 index=3D4b564d03 value=3D0 kvm_msr_entry_add: @19 index=3D38d value=3D0 kvm_msr_entry_add: @20 index=3D38f value=3D0 kvm_msr_entry_add: @21 index=3D38e value=3D0 kvm_msr_entry_add: @22 index=3D390 value=3D0 kvm_msr_entry_add: @23 index=3D309 value=3D0 kvm_msr_entry_add: @24 index=3D30a value=3D0 kvm_msr_entry_add: @25 index=3D30b value=3D0 kvm_msr_entry_add: @26 index=3Dc1 value=3D0 kvm_msr_entry_add: @27 index=3D186 value=3D0 kvm_msr_entry_add: @28 index=3Dc2 value=3D0 kvm_msr_entry_add: @29 index=3D187 value=3D0 kvm_msr_entry_add: @30 index=3Dc3 value=3D0 kvm_msr_entry_add: @31 index=3D188 value=3D0 kvm_msr_entry_add: @32 index=3Dc4 value=3D0 kvm_msr_entry_add: @33 index=3D189 value=3D0 kvm_msr_entry_add: @34 index=3D17a value=3D0 kvm_msr_entry_add: @35 index=3D17b value=3D0 kvm_msr_entry_add: @36 index=3D400 value=3D0 kvm_msr_entry_add: @37 index=3D401 value=3D0 kvm_msr_entry_add: @38 index=3D402 value=3D0 kvm_msr_entry_add: @39 index=3D403 value=3D0 kvm_msr_entry_add: @40 index=3D404 value=3D0 kvm_msr_entry_add: @41 index=3D405 value=3D0 kvm_msr_entry_add: @42 index=3D406 value=3D0 kvm_msr_entry_add: @43 index=3D407 value=3D0 kvm_msr_entry_add: @44 index=3D408 value=3D0 kvm_msr_entry_add: @45 index=3D409 value=3D0 kvm_msr_entry_add: @46 index=3D40a value=3D0 kvm_msr_entry_add: @47 index=3D40b value=3D0 kvm_msr_entry_add: @48 index=3D40c value=3D0 kvm_msr_entry_add: @49 index=3D40d value=3D0 kvm_msr_entry_add: @50 index=3D40e value=3D0 kvm_msr_entry_add: @51 index=3D40f value=3D0 kvm_msr_entry_add: @52 index=3D410 value=3D0 kvm_msr_entry_add: @53 index=3D411 value=3D0 kvm_msr_entry_add: @54 index=3D412 value=3D0 kvm_msr_entry_add: @55 index=3D413 value=3D0 kvm_msr_entry_add: @56 index=3D414 value=3D0 kvm_msr_entry_add: @57 index=3D415 value=3D0 kvm_msr_entry_add: @58 index=3D416 value=3D0 kvm_msr_entry_add: @59 index=3D417 value=3D0 kvm_msr_entry_add: @60 index=3D418 value=3D0 kvm_msr_entry_add: @61 index=3D419 value=3D0 kvm_msr_entry_add: @62 index=3D41a value=3D0 kvm_msr_entry_add: @63 index=3D41b value=3D0 kvm_msr_entry_add: @64 index=3D41c value=3D0 kvm_msr_entry_add: @65 index=3D41d value=3D0 kvm_msr_entry_add: @66 index=3D41e value=3D0 kvm_msr_entry_add: @67 index=3D41f value=3D0 kvm_msr_entry_add: @68 index=3D420 value=3D0 kvm_msr_entry_add: @69 index=3D421 value=3D0 kvm_msr_entry_add: @70 index=3D422 value=3D0 kvm_msr_entry_add: @71 index=3D423 value=3D0 kvm_msr_entry_add: @72 index=3D424 value=3D0 kvm_msr_entry_add: @73 index=3D425 value=3D0 kvm_msr_entry_add: @74 index=3D426 value=3D0 kvm_msr_entry_add: @75 index=3D427 value=3D0 kvm_msr_entry_add: @76 index=3D2ff value=3D0 kvm_msr_entry_add: @77 index=3D250 value=3D0 kvm_msr_entry_add: @78 index=3D258 value=3D0 kvm_msr_entry_add: @79 index=3D259 value=3D0 kvm_msr_entry_add: @80 index=3D268 value=3D0 kvm_msr_entry_add: @81 index=3D269 value=3D0 kvm_msr_entry_add: @82 index=3D26a value=3D0 kvm_msr_entry_add: @83 index=3D26b value=3D0 kvm_msr_entry_add: @84 index=3D26c value=3D0 kvm_msr_entry_add: @85 index=3D26d value=3D0 kvm_msr_entry_add: @86 index=3D26e value=3D0 kvm_msr_entry_add: @87 index=3D26f value=3D0 kvm_msr_entry_add: @88 index=3D200 value=3D0 kvm_msr_entry_add: @89 index=3D201 value=3D0 kvm_msr_entry_add: @90 index=3D202 value=3D0 kvm_msr_entry_add: @91 index=3D203 value=3D0 kvm_msr_entry_add: @92 index=3D204 value=3D0 kvm_msr_entry_add: @93 index=3D205 value=3D0 kvm_msr_entry_add: @94 index=3D206 value=3D0 kvm_msr_entry_add: @95 index=3D207 value=3D0 kvm_msr_entry_add: @96 index=3D208 value=3D0 kvm_msr_entry_add: @97 index=3D209 value=3D0 kvm_msr_entry_add: @98 index=3D20a value=3D0 kvm_msr_entry_add: @99 index=3D20b value=3D0 kvm_msr_entry_add: @100 index=3D20c value=3D0 kvm_msr_entry_add: @101 index=3D20d value=3D0 kvm_msr_entry_add: @102 index=3D20e value=3D0 kvm_msr_entry_add: @103 index=3D20f value=3D0 qemu-system-x86_64: /home/matwey/lab/qemu/target/i386/kvm.c:2218: kvm_get_msrs: Assertion `ret =3D=3D cpu->kvm_msr_buf->nmsrs' failed. > Dave > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1661386 > > Title: > Assertion `ret =3D=3D cpu->kvm_msr_buf->nmsrs' failed > > Status in QEMU: > New > > Bug description: > Hello, > > > I see the following when try to run qemu from master as the following: > > # ./x86_64-softmmu/qemu-system-x86_64 --version > QEMU emulator version 2.8.50 (v2.8.0-1006-g4e9f524) > Copyright (c) 2003-2016 Fabrice Bellard and the QEMU Project developers > # ./x86_64-softmmu/qemu-system-x86_64 -machine accel=3Dkvm -nodefaults > -no-reboot -nographic -cpu host -vga none -kernel .build.kernel.kvm > -initrd .build.initrd.kvm -append 'panic=3D1 no-kvmclock console=3DttyS0 > loglevel=3D7' -m 1024 -serial stdio > qemu-system-x86_64: /home/matwey/lab/qemu/target/i386/kvm.c:1849: > kvm_put_msrs: Assertion `ret =3D=3D cpu->kvm_msr_buf->nmsrs' failed. > > First broken commit has been bisected: > > commit 48e1a45c3166d659f781171a47dabf4a187ed7a5 > Author: Paolo Bonzini > Date: Wed Mar 30 22:55:29 2016 +0200 > > target-i386: assert that KVM_GET/SET_MSRS can set all requested MSRs > > This would have caught the bug in the previous patch. > > Signed-off-by: Paolo Bonzini > > My cpuinfo is the following: > > processor : 0 > vendor_id : GenuineIntel > cpu family : 6 > model : 44 > model name : Intel(R) Xeon(R) CPU X5675 @ 3.07GHz > stepping : 2 > microcode : 0x14 > cpu MHz : 3066.775 > cache size : 12288 KB > physical id : 0 > siblings : 2 > core id : 0 > cpu cores : 2 > apicid : 0 > initial apicid : 0 > fpu : yes > fpu_exception : yes > cpuid level : 11 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge = mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss ht syscall nx rdtscp lm= constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc= aperfmperf pni pclmulqdq vmx ssse3 cx16 sse4_1 sse4_2 popcnt aes hyperviso= r lahf_lm ida arat epb dtherm tpr_shadow vnmi ept vpid > bugs : > bogomips : 6133.55 > clflush size : 64 > cache_alignment : 64 > address sizes : 40 bits physical, 48 bits virtual > power management: > > To manage notifications about this bug go to: > https://bugs.launchpad.net/qemu/+bug/1661386/+subscriptions -- = With best regards, Matwey V. Kornilov http://blog.matwey.name xmpp://0x2207@jabber.ru -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1661386 Title: Assertion `ret =3D=3D cpu->kvm_msr_buf->nmsrs' failed Status in QEMU: New Bug description: Hello, = I see the following when try to run qemu from master as the following: # ./x86_64-softmmu/qemu-system-x86_64 --version QEMU emulator version 2.8.50 (v2.8.0-1006-g4e9f524) Copyright (c) 2003-2016 Fabrice Bellard and the QEMU Project developers # ./x86_64-softmmu/qemu-system-x86_64 -machine accel=3Dkvm -nodefaults -no-reboot -nographic -cpu host -vga none -kernel .build.kernel.kvm -initrd .build.initrd.kvm -append 'panic=3D1 no-kvmclock console=3DttyS0 loglevel=3D7' -m 1024 -serial stdio qemu-system-x86_64: /home/matwey/lab/qemu/target/i386/kvm.c:1849: kvm_put_msrs: Assertion `ret =3D=3D cpu->kvm_msr_buf->nmsrs' failed. First broken commit has been bisected: commit 48e1a45c3166d659f781171a47dabf4a187ed7a5 Author: Paolo Bonzini Date: Wed Mar 30 22:55:29 2016 +0200 target-i386: assert that KVM_GET/SET_MSRS can set all requested MSRs = This would have caught the bug in the previous patch. = Signed-off-by: Paolo Bonzini My cpuinfo is the following: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 44 model name : Intel(R) Xeon(R) CPU X5675 @ 3.07GHz stepping : 2 microcode : 0x14 cpu MHz : 3066.775 cache size : 12288 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mc= a cmov pat pse36 clflush dts mmx fxsr sse sse2 ss ht syscall nx rdtscp lm c= onstant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc a= perfmperf pni pclmulqdq vmx ssse3 cx16 sse4_1 sse4_2 popcnt aes hypervisor = lahf_lm ida arat epb dtherm tpr_shadow vnmi ept vpid bugs : bogomips : 6133.55 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1661386/+subscriptions