[Bug 1268906] Re: cpu soft lockup running kvm
This bug was fixed in the package linux - 3.13.0-22.44 --- linux (3.13.0-22.44) trusty; urgency=low [ Tim Gardner ] * Release Tracking Bug - LP: #1301562 [ dann frazier ] * [Config] enable linux-tools on arm64 https://lists.ubuntu.com/archives/kernel-team/2014-April/041332.html [ Greg Kurz ] * SAUCE: powerpc/le: Big endian arguments for ppc_rtas() - LP: #1289518 [ Mahesh Salgaonkar ] * SAUCE: powerpc/book3s: Fix CFAR clobbering issue in machine check handler. - LP: #1301424 * SAUCE: powerpc/book3s: Recover from MC in sapphire on SCOM read via MMIO. - LP: #1301424 * SAUCE: powerpc/book3s: Fix mc_recoverable_range buffer overrun issue. - LP: #1301424 [ Paolo Pisati ] * [Config] armhf: USB_STORAGE=y https://lists.ubuntu.com/archives/kernel-team/2014-April/041349.html [ Stefan Bader ] * SAUCE: kvm: Force preempt folding in kvm on i386 - LP: #1268906 [ Tim Gardner ] * SAUCE: Drop lttng in favor of lttng-modules The kernel version was down rev on an rc release. [ Tomas Winkler ] * SAUCE: (no-up) mei: me: do not load the driver if the FW doesn't support MEI interface - LP: #1301118 [ Upstream Kernel Changes ] * drm/i915: Deprecated UMS support - LP: #1284816 * powerpc/book3s: Split the common exception prolog logic into two section. - LP: #1301424 * powerpc/book3s: Introduce exclusive emergency stack for machine check exception. - LP: #1301424 * powerpc/book3s: handle machine check in Linux host. - LP: #1301424 * powerpc/book3s: Return from interrupt if coming from evil context. - LP: #1301424 * powerpc/book3s: Introduce a early machine check hook in cpu_spec. - LP: #1301424 * powerpc/book3s: Add flush_tlb operation in cpu_spec. - LP: #1301424 * powerpc/book3s: Flush SLB/TLBs if we get SLB/TLB machine check errors on power7. - LP: #1301424 * powerpc/book3s: Flush SLB/TLBs if we get SLB/TLB machine check errors on power8. - LP: #1301424 * powerpc/book3s: Decode and save machine check event. - LP: #1301424 * powerpc/book3s: Queue up and process delayed MCE events. - LP: #1301424 * powerpc/powernv: Remove machine check handling in OPAL. - LP: #1301424 * powerpc/powernv: Machine check exception handling. - LP: #1301424 * powerpc: Fix "attempt to move .org backwards" error - LP: #1301424 * powerpc: Fix endian issues in power7/8 machine check handler - LP: #1301424 * Move precessing of MCE queued event out from syscall exit path. - LP: #1301424 -- Andy WhitcroftWed, 02 Apr 2014 15:58:48 +0100 ** Changed in: linux (Ubuntu Trusty) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
** Changed in: linux (Ubuntu Trusty) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
** Changed in: linux (Ubuntu Trusty) Status: Confirmed => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
** Also affects: linux (Ubuntu Trusty) Importance: Medium Assignee: Stefan Bader (smb) Status: Confirmed ** Also affects: qemu-kvm (Ubuntu Trusty) Importance: Medium Status: Confirmed ** Changed in: qemu-kvm (Ubuntu Trusty) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
Still a problem on 3.13.0-17-generic. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
@Gareth, I suspect yours is a different bug, so it would be best if you file a new bug (so that people trying to debug *this* bug don't mix up symptoms in their minds, which can wrongly make them rule out a proper cause for the other bug) against both qemu and linux. In that bug, please let us know if a simple 'apt-get dist-upgrade' or a kernel compile suffices to reproduce the bug. Also, the full kvm command line on both the host and in the guest, the distro+release in the guest, and the disk type (qcow, raw, qed) at both levels. Thank you. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
I've had a number of lockups in the last 2 days since upgrading to Trusty and trying to run a VM under kvm which look to match this issue. System appears to become unresponsive/hang with what looks like some kind of I/O lockup, cannot ls in a terminal etc before eventually display freezes. syslog shows kernel spew related to soft lockup after this point though. The issue appeared to coincide with a period of high disk I/O within the guest on both occasions. I'll look to reproduce on a less active guest outside of working day. This occured on a 64 bit system: lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu Trusty Tahr (development branch) Release:14.04 Codename: trusty uname -a Linux moon127-pcsubu 3.13.0-12-generic #32-Ubuntu SMP Fri Feb 21 17:45:10 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux ** Attachment added: "syslog/kernel log of lockup" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+attachment/3999385/+files/soft-lockup-syslog.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
This looks to be drilling down to a problem which seems to only affect i386 for some reason. But basically the kvm/qemu process gets into a situation where the thread_info says "you have to reschedule" but the per-cpu counterpart prevents that. Now the kvm/qemu process runs wildly around between trying to run the guest vcpu which is not done because the process side says reschedule and the cond_reschedule() function not doing anything because the cpu info tells it otherwise. Right now I got a test kernel back to run kvm but that is rather a vile work-around. I have sent an email upstream in the hope that somebody there has a better solution. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
I think the switch to 3.13 may have borked kvm for me. I'll try to confirm that tomorrow... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
OK, its not related to the eager fpu stuff. Just reproduced the same lockup with a test kernel that contained some potential fixes from upstream. The interesting part of the backtraces is that the EIP is changing and often not in a function that should be able to block. So something seems to cause the __vcpu_run (called by kvm_arch_vcpu_ioctl_run) to spin in a relatively busy loop without ever exiting. The failed RDMSR most likely is harmless. Checking next what that "zapping shadow pages" might tell us. Does anybody recall when (which kernel) this worked last on i386? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
I wonder whether this could be remotely related to bug #1265841. I don'T have
any proof there. Just stumbled over some used_math check (followed by potential
init_fpu) right at the beginning of kvm_arch_vcpu_ioctl_run. There was a longer
thread on LKML about that ("[PATCH] Make math_state_restore() save and restore
the interrupt flag").
Though in this case nothing is restored, and I don't see interrupts being
disabled. Also from the stack it seems we are usually later in that function.
So this more loud thinking and putting down notes, so I do not forget
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Stefan Bader (smb)
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[Bug 1268906] Re: cpu soft lockup running kvm
On my AMD laptop (x130e thinkpad) with a uptodate trusty amd64 install, I cannot reproduce this. After installing a 32-bit trusty image, I can in fact reproduce it: Jan 27 13:07:05 serge-ThinkPad-X130e kernel: [ 725.593411] kvm: zapping shadow pages for mmio generation wraparound Jan 27 13:07:19 serge-ThinkPad-X130e kernel: [ 740.100465] kvm [3887]: vcpu0 unhandled rdmsr: 0xc0010001 Jan 27 13:07:21 serge-ThinkPad-X130e kernel: [ 742.187275] usb 1-1: USB disconnect, device number 3 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524715] BUG: soft lockup - CPU#0 stuck for 22s! [qemu-system-i38:3889] Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524729] Modules linked in: usb_storage parport_pc ppdev joydev rfcomm bnep arc4 uvcvideo rtl8192ce videobuf2_vmalloc videobuf2_memops videobuf2_core videodev rtl_pci kvm_amd rtlwifi kvm rtl8192c_common mac80211 microcode snd_hda_codec_conexant btusb snd_hda_codec_hdmi radeon cfg80211 bluetooth thinkpad_acpi snd_hda_intel snd_hda_codec nvram snd_hwdep snd_seq_midi snd_pcm snd_seq_midi_event snd_rawmidi snd_seq ttm psmouse drm_kms_helper snd_seq_device sp5100_tco snd_page_alloc rtsx_pci_ms serio_raw memstick drm snd_timer i2c_piix4 k10temp wmi i2c_algo_bit snd soundcore video mac_hid lp parport rtsx_pci_sdmmc rtsx_pci atl1c ahci libahci Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524815] CPU: 0 PID: 3889 Comm: qemu-system-i38 Not tainted 3.13.0-5-generic #20-Ubuntu Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524820] Hardware name: LENOVO 062223U/062223U, BIOS 8RET52WW (1.15 ) 11/15/2011 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524825] task: edc78d00 ti: f63e6000 task.ti: f63e6000 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524830] EIP: 0060:[] EFLAGS: 0202 CPU: 0 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524840] EIP is at __srcu_read_lock+0x2c/0x50 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524845] EAX: f14e4024 EBX: ECX: f7bdddf0 EDX: Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524848] ESI: 0001 EDI: 0001 EBP: f63e7dec ESP: f63e7de4 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524852] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524856] CR0: 8005003b CR2: CR3: 35e58000 CR4: 07f0 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524860] Stack: Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524863] f626b550 f63e7e6c f91da2f6 00b2 f7bd3400 57c83df4 134d36c2 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524873] f7bd3140 edc78d00 0046 edc78d00 f626b550 003e7e24 c1058fb7 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524882] f63e7e30 c164c598 f626b570 f63e7e94 c1644fac f626b570 360df2c8 f14e2008 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524892] Call Trace: Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524933] [] vcpu_enter_guest+0x636/0xc90 [kvm] Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524941] [] ? irq_exit+0x47/0xa0 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524950] [] ? smp_apic_timer_interrupt+0x38/0x50 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524957] [] ? apic_timer_interrupt+0x34/0x3c Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.524988] [] kvm_arch_vcpu_ioctl_run+0x1cf/0x3e0 [kvm] Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.525011] [] kvm_vcpu_ioctl+0x433/0x4d0 [kvm] Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.525019] [] ? lapic_next_event+0x1b/0x20 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.525025] [] ? clockevents_program_event+0x95/0x130 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.525031] [] ? tick_program_event+0x29/0x30 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.525036] [] ? hrtimer_interrupt+0x142/0x2b0 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.525042] [] ? lapic_next_event+0x1b/0x20 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.525064] [] ? vcpu_put+0x30/0x30 [kvm] Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.525071] [] do_vfs_ioctl+0x2e2/0x4d0 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.525078] [] ? ktime_get_ts+0x48/0x140 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.525083] [] SyS_ioctl+0x60/0x80 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.525088] [] sysenter_do_call+0x12/0x28 Jan 27 13:07:48 serge-ThinkPad-X130e kernel: [ 768.525091] Code: 89 e5 56 53 3e 8d 74 26 00 8b 10 83 e2 01 8b 48 04 64 03 0d 04 d1 a6 c1 8d 1c 95 00 00 00 00 01 d9 8b 31 83 c6 01 89 31 0f ae f0 <89> f6 8b 40 04 64 03 05 04 d1 a6 c1 01 d8 8b 48 08 83 c1 01 89 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions
[Bug 1268906] Re: cpu soft lockup running kvm
Latest trusty desktop image (dated 24 Jan) results in the oops when running with kvm as: $ kvm --enable-kvm -cdrom ubuntu_trusty-desktop-i386.iso -boot d -m 1024 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
Same problem running with -vnc :7 ** Attachment added: "dmesg.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+attachment/395/+files/dmesg.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
To be clear, my host system is a 64-bit capable first-gen i7, but is actually running fully 32-bit. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
Latest series of oopses running on a fully updated trusty system. ** Attachment added: "dmesg.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+attachment/3958887/+files/dmesg.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
Serge has just identified that the trigger for this bug is running kvm with '-net user': without this option, no issues. ** Changed in: qemu-kvm (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
Did this issue start happening after an update/upgrade? Was there a kernel version where you were not having this particular problem? This will help determine if the problem you are seeing is the result of the introduction of a regression, and when this regression was introduced. If this is a regression, we can perform a kernel bisect to identify the commit that introduced the problem. ** Tags added: kernel-da-key -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
dmesg from 3.13.0-5-generic kernel. ** Attachment added: "dmesg.3.13.0-5-generic" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+attachment/3954151/+files/dmesg.3.13.0-5-generic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
Still a problem on 3.13.0-5-generic. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
Same problem with 3.13.0-4-generic. Any progress on this? kvm is unusable due to this issue. ** Attachment added: "dmesg-3.13.0-4-generic.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+attachment/3952909/+files/dmesg-3.13.0-4-generic.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
Same problem with 3.13.0-4-generic. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
** Changed in: qemu-kvm (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
Alas, same issue using kernel 3.13.0-031300rc8-generic. ** Changed in: linux (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.13 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13-rc8-trusty/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1268906] Re: cpu soft lockup running kvm
See CurrentDmesg.txt for lots of errors such as: [ 1688.474887] Call Trace: [ 1688.474914] [] kvm_vcpu_ioctl+0x433/0x4d0 [kvm] [ 1688.474924] [] ? wake_up_state+0xf/0x20 [ 1688.474931] [] ? wake_futex+0x65/0x90 [ 1688.474937] [] ? futex_wake+0x13d/0x160 [ 1688.474942] [] ? do_futex+0xeb/0x660 [ 1688.474966] [] ? vcpu_put+0x30/0x30 [kvm] [ 1688.474972] [] do_vfs_ioctl+0x2e2/0x4d0 [ 1688.474977] [] ? tick_program_event+0x29/0x30 [ 1688.474983] [] ? hrtimer_interrupt+0x142/0x2b0 [ 1688.474988] [] ? SyS_futex+0x8c/0x140 [ 1688.474993] [] SyS_ioctl+0x60/0x80 [ 1688.475002] [] syscall_call+0x7/0xb [ 1688.475009] [] ? __ticket_unlock_slowpath+0x13/0x31 ** Also affects: qemu-kvm (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268906 Title: cpu soft lockup running kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
