https://bugzilla.novell.com/show_bug.cgi?id=844244 https://bugzilla.novell.com/show_bug.cgi?id=844244#c0 Summary: Frequent lockup of KVM based OBS workers Classification: openSUSE Product: openSUSE 12.3 Version: Final Platform: Other OS/Version: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: dmueller@suse.com QAContact: qa-bugs@suse.de Found By: --- Blocker: --- Hi, KVM workers with NMI watchdog enabled are frequently locking up with: [219247.736430] Kernel panic - not syncing: Watchdog detected hard LOCKUP on cpu 3 [219247.743858] Pid: 12403, comm: qemu-kvm Not tainted 3.7.10-1.1-default #1 [219247.750695] Call Trace: [219247.753307] [<ffffffff81004728>] dump_trace+0x78/0x2c0 [219247.758686] [<ffffffff8153b44e>] dump_stack+0x69/0x6f [219247.763972] [<ffffffff8153cc61>] panic+0xc5/0x1d1 [219247.768919] [<ffffffff810cf612>] watchdog_overflow_callback+0xc2/0xd0 [219247.775608] [<ffffffff81100c8d>] __perf_event_overflow+0x9d/0x240 [219247.781934] [<ffffffff8101806f>] intel_pmu_handle_irq+0x1af/0x330 [219247.788275] [<ffffffff81548a79>] nmi_handle.isra.0+0x49/0x70 [219247.794167] [<ffffffff81548b87>] do_nmi+0xe7/0x360 [219247.799196] [<ffffffff81548060>] end_repeat_nmi+0x1e/0x2e [219247.804841] [<ffffffff8154753d>] _raw_spin_lock+0x1d/0x30 [219247.810473] [<ffffffff8107e9f5>] load_balance+0x345/0x890 [219247.816105] [<ffffffff8107efdc>] rebalance_domains+0x9c/0x170 [219247.822076] [<ffffffff8107f0f1>] run_rebalance_domains+0x41/0x170 [219247.828413] [<ffffffff8104c39e>] __do_softirq+0xbe/0x1f0 [219247.833959] [<ffffffff815506dc>] call_softirq+0x1c/0x30 [219247.839419] [<ffffffff81004675>] do_softirq+0x75/0xb0 [219247.844718] [<ffffffff8104c635>] irq_exit+0xa5/0xb0 [219247.849845] [<ffffffff810253a8>] smp_apic_timer_interrupt+0x68/0xa0 [219247.856365] [<ffffffff8154ff9d>] apic_timer_interrupt+0x6d/0x80 [219247.862556] [<ffffffffa03744a9>] vcpu_enter_guest+0x4f9/0xab0 [kvm] [219247.869101] [<ffffffffa0375020>] kvm_arch_vcpu_ioctl_run+0x1f0/0x510 [kvm] [219247.876241] [<ffffffffa035d120>] kvm_vcpu_ioctl+0x410/0x590 [kvm] [219247.882574] [<ffffffff81177b1f>] do_vfs_ioctl+0x8f/0x520 [219247.888116] [<ffffffff81178050>] sys_ioctl+0xa0/0xc0 [219247.893314] [<ffffffff8154f2ed>] system_call_fastpath+0x1a/0x1f [219247.899473] [<00007f3ab659af27>] 0x7f3ab659af26 [219248.945299] Shutting down cpus with NMI -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.