Bug#604604: qemu-kvm: vm entry failed with error 0xffffffff; kvm_run returned -22
28.11.2010 05:25, Ben Hutchings wrote: Please can you test whether this is fixed in 2.6.32-28? We backported a KVM feature (VCPU_EVENTS) which meant we needed an additional fix beyond the one which Michael Tokarev identified, and that was done in -28. Yes, with 2.6.32-28 686 kernel I can't reproduce the problem anymore, kvm works as intended, while reverting back to -27 returns the issue. Reading #599507 again, together with this #604604 and also #604900, it looks like all this stuff is the same thing. There's also #580652. Out of curiocity, why this feature (VCPU_EVENTS) were backported/applied in the first place (it was in 2.6.32-12)? Isn't it somewhat too buggy having in mind all the above? Thank you! /mjt -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#604604: qemu-kvm: vm entry failed with error 0xffffffff; kvm_run returned -22
On Sun, 2010-11-28 at 13:39 +0300, Michael Tokarev wrote: 28.11.2010 05:25, Ben Hutchings wrote: Please can you test whether this is fixed in 2.6.32-28? We backported a KVM feature (VCPU_EVENTS) which meant we needed an additional fix beyond the one which Michael Tokarev identified, and that was done in -28. Yes, with 2.6.32-28 686 kernel I can't reproduce the problem anymore, kvm works as intended, while reverting back to -27 returns the issue. Excellent. Reading #599507 again, together with this #604604 and also #604900, it looks like all this stuff is the same thing. There's also #580652. Could be, but error code -22 (EINVAL) is not very specific. Out of curiocity, why this feature (VCPU_EVENTS) were backported/applied in the first place (it was in 2.6.32-12)? Isn't it somewhat too buggy having in mind all the above? The svn changelog says: r15572 | maks | 2010-04-27 17:36:34 +0100 (Tue, 27 Apr 2010) | 3 lines backport KVM: x86: Add KVM_GET/SET_VCPU_EVENTS is said to help with troubles on vmsave/restore. Ben. -- Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse. signature.asc Description: This is a digitally signed message part
Bug#604604: qemu-kvm: vm entry failed with error 0xffffffff; kvm_run returned -22
Please can you test whether this is fixed in 2.6.32-28? We backported a KVM feature (VCPU_EVENTS) which meant we needed an additional fix beyond the one which Michael Tokarev identified, and that was done in -28. Note, by the way, that an i386 version of qemu-kvm will not work with the amd64 kernel flavour in version 2.6.32-28. I have a candidate fix for this but I am trying to get the upstream KVM maintainers to check it. Ben. -- Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse. signature.asc Description: This is a digitally signed message part
Bug#604604: qemu-kvm: vm entry failed with error 0xffffffff; kvm_run returned -22
tags 604604 + moreinfo thanks 23.11.2010 01:20, Jakub Wilk wrote: Package: qemu-kvm Version: 0.13.0+dfsg-2 Severity: grave Justification: renders package unusable After 0.12.5+dfsg-5 - 0.13.0+dfsg-2 upgrade kvm doesn't start anymore. I get an error immediately: $ kvm kvm: vm entry failed with error 0x kvm_run returned -22 model name: AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ Architecture: i386 (i686) Kernel: Linux 2.6.32-5-686 (SMP w/2 CPU cores) linux-image-2.6.32-5-686 [lin 2.6.32-27 Linux 2.6.32 for modern PCs This looks like a kernel problem which is fixed by a recent -stable upstream kernel (2.6.32.26): From mtosa...@redhat.com Fri Oct 29 15:18:43 2010 From: Joerg Roedel joerg.roe...@amd.com Date: Thu, 28 Oct 2010 16:48:09 -0200 Subject: KVM: SVM: Fix wrong intercept masks on 32 bit To: g...@kroah.com Cc: a...@redhat.com, mtosa...@redhat.com, sta...@kernel.org, Jan Kiszka jan.kis...@siemens.com, Gleb Natapov g...@redhat.com, Joerg Roedel joerg.roe...@amd.com Message-ID: 20101028185026.905098...@amt.cnet Content-Disposition: inline; filename=0001-KVM-SVM-Fix-wrong-intercept-masks-on-32-bit.patch From: Joerg Roedel joerg.roe...@amd.com commit 061e2fd16863009c8005b4b5fdfb75c7215c0b99 upstream. This patch makes KVM on 32 bit SVM working again by correcting the masks used for iret interception. With the wrong masks the upper 32 bits of the intercepts are masked out which leaves vmrun unintercepted. This is not legal on svm and the vmrun fails. Bug was introduced by commits 95ba827313 and 3cfc3092. Cc: Jan Kiszka jan.kis...@siemens.com Cc: Gleb Natapov g...@redhat.com Signed-off-by: Joerg Roedel joerg.roe...@amd.com Signed-off-by: Avi Kivity a...@redhat.com Signed-off-by: Greg Kroah-Hartman gre...@suse.de --- arch/x86/kvm/svm.c |4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) The problem case happens on 32bit kernel only and does not happen on 64bit. Please try with amd64 kernel (linux-image-2.6.32-5-amd64) - it should just work. Note that almost no one tests kvm on 32bits nowadays, consider running 64bit kernel with either 32 or 64 bit userspace. I run 64bit kernel and 32bit userspace for a long time and now finally I can say most probs in this configuration has been fixed - for more than a year I haven't encountered one :) And please also consider switching to AthlonII - your processor lacks npt (nested page tables) support and TSC syncronisation, both affects performance and stability of kvm guest in significant way. Not related to this bugreport, just a general suggestion. Tagging as 'moreinfo' for now, if the problem turns out to be what I think it is, I'll reassign it to kernel-image and downgrade to normal. Thanks! /mjt -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#604604: qemu-kvm: vm entry failed with error 0xffffffff; kvm_run returned -22
tags 604604 - moreinfo tags 604604 + confirmed upstream patch reassign 604604 linux-image-2.6.32-5-i686 2.6.32-27 severity 604604 normal thanks 23.11.2010 01:20, Jakub Wilk wrote: Package: qemu-kvm Version: 0.13.0+dfsg-2 Severity: grave Justification: renders package unusable After 0.12.5+dfsg-5 - 0.13.0+dfsg-2 upgrade kvm doesn't start anymore. I get an error immediately: $ kvm kvm: vm entry failed with error 0x kvm_run returned -22 I can confirm this issue on 32bit kernel (not on 64bit one), and the patch I referred to before fixes the issue. So I'm reassigning this bug to linux-2.6 (kernel), lowering severity and tagging appropriately. /mjt -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#604604: qemu-kvm: vm entry failed with error 0xffffffff; kvm_run returned -22
tags 604604 - upstream patch thanks Hello again. After a bit more testing it turns out this problem is somehow specific to debian 2.6.32-5-686-27 kernel, it does not occur on upstream (kernel.org) kernel even when not applying the mentioned patch (which went into upstream -stable just a few days ago, but which was in debian for quite some time already). Stock kernel - with or without that patch - works fine. amd64 Debian kernel works fine too. But Debian 686 kernel immediately returns that ugly -22 to every kvm_run(). At least here on a CPU similar to your (mine is Turion TL-52, which is of the same generation as 4400+ you're using, with the same problems). I'm not sure yet if it's specific to svm (amd) or general. /mjt -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#604604: qemu-kvm: vm entry failed with error 0xffffffff; kvm_run returned -22
* Michael Tokarev m...@tls.msk.ru, 2010-11-23, 11:02: The problem case happens on 32bit kernel only and does not happen on 64bit. Please try with amd64 kernel (linux-image-2.6.32-5-amd64) - it should just work. Indeed, it works fine with linux-image-2.6.32-5-amd64. Thanks for your work on this issue! -- Jakub Wilk -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#604604: qemu-kvm: vm entry failed with error 0xffffffff; kvm_run returned -22
Package: qemu-kvm Version: 0.13.0+dfsg-2 Severity: grave Justification: renders package unusable After 0.12.5+dfsg-5 - 0.13.0+dfsg-2 upgrade kvm doesn't start anymore. I get an error immediately: $ kvm kvm: vm entry failed with error 0x kvm_run returned -22 -- Package-specific info: /proc/cpuinfo: processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 107 model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ stepping: 2 cpu MHz : 2300.000 cache size : 512 KB physical id : 0 siblings: 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fdiv_bug: no hlt_bug : no f00f_bug: no coma_bug: no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow extd_apicid pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy 3dnowprefetch bogomips: 4620.39 clflush size: 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp tm stc 100mhzsteps processor : 1 vendor_id : AuthenticAMD cpu family : 15 model : 107 model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ stepping: 2 cpu MHz : 2300.000 cache size : 512 KB physical id : 0 siblings: 2 core id : 1 cpu cores : 2 apicid : 1 initial apicid : 1 fdiv_bug: no hlt_bug : no f00f_bug: no coma_bug: no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow extd_apicid pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy 3dnowprefetch bogomips: 4620.39 clflush size: 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp tm stc 100mhzsteps -- System Information: Debian Release: squeeze/sid APT prefers unstable APT policy: (990, 'unstable'), (500, 'experimental'), (500, 'testing') Architecture: i386 (i686) Kernel: Linux 2.6.32-5-686 (SMP w/2 CPU cores) Locale: LANG=C, LC_CTYPE=pl_PL.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages qemu-kvm depends on: ii adduser 3.112+nmu1 add and remove users and groups ii bridge-utils 1.4-5 Utilities for configuring the Linu ii etherboot-qemu5.4.4-7Bootstrapping for various network ii iproute 20100519-3 networking and traffic control too ii libaio1 0.3.107-7 Linux kernel AIO access library - ii libasound21.0.23-2.1 shared library for ALSA applicatio ii libattr1 1:2.4.44-2 Extended attribute shared library ii libbluetooth3 4.70-1 Library to use the BlueZ Linux Blu ii libbrlapi0.5 4.2-6 braille display access via BRLTTY ii libc6 2.11.2-7 Embedded GNU C Library: Shared lib ii libcurl3-gnutls 7.21.2-1 Multi-protocol file transfer libra ii libgnutls26 2.10.3-1 the GNU TLS library - runtime libr ii libjpeg62 6b1-1 The Independent JPEG Group's JPEG ii libncurses5 5.7+20100313-4 shared libraries for terminal hand ii libpng12-01.2.44-1 PNG library - runtime ii libpulse0 0.9.21-3 PulseAudio client libraries ii libsasl2-22.1.23.dfsg1-6 Cyrus SASL - authentication abstra ii libsdl1.2debian 1.2.14-6.1 Simple DirectMedia Layer ii libuuid1 2.17.2-3.3 Universally Unique ID library ii libvdeplug2 2.2.3-3Virtual Distributed Ethernet - Plu ii libx11-6 2:1.3.3-4 X11 client-side library ii python2.6.6-5interactive high-level object-orie ii qemu-keymaps 0.13.0+dfsg-2 QEMU keyboard maps ii qemu-utils0.13.0+dfsg-2 QEMU utilities ii zlib1g1:1.2.5.dfsg-1 compression library - runtime Versions of packages qemu-kvm recommends: ii linux-image-2.6.32-5-686 [lin 2.6.32-27 Linux 2.6.32 for modern PCs Versions of packages qemu-kvm suggests: ii debootstrap 1.0.26 Bootstrap a basic Debian system pn samba none (no description available) pn vde2 none (no description available) -- no debconf information -- Jakub Wilk -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe.
