Bugs item #2679041, was opened at 2009-03-10 10:13 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2679041&group_id=180599 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: kernel Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Dave Sperry (sperryd) Assigned to: Nobody/Anonymous (nobody) Summary: BUG: scheduling while atomic: qemu-system-x86 Initial Comment: Syslog reports the following bug on a regular basis: Mar 10 09:19:02 jmeesoa1 kernel: BUG: scheduling while atomic: qemu-system-x86/0x00000002/27555, CPU#0 Mar 10 09:19:02 jmeesoa1 kernel: Pid: 27555, comm: qemu-system-x86 Not tainted 2.6.24.7-75ibmrt2.18 #1 Mar 10 09:19:02 jmeesoa1 kernel: Mar 10 09:19:02 jmeesoa1 kernel: Call Trace: Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff81036dfd>] __schedule_bug+0x66/0x6b Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff81284c0f>] __schedule+0xe6/0x7f3 Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8105dfb9>] ? __rt_mutex_adjust_prio+0x11/0x24 Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8105f001>] ? task_blocks_on_rt_mutex+0x193/0x1fa Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8128566a>] schedule+0xdf/0xff Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff81286ce5>] rt_spin_lock_slowlock+0x176/0x235 Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff81287380>] __rt_spin_lock+0x4d/0x4f Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8128738b>] rt_spin_lock+0x9/0xb Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff81039818>] __wake_up+0x1c/0x5b Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8850d001>] :kvm:kvm_vcpu_kick+0x54/0xaa Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8851cb86>] :kvm:kvm_apic_set_irq+0x70/0x77 Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8851cdac>] :kvm:ioapic_inj_irq+0x14/0x16 Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8851d022>] :kvm:ioapic_service+0xbf/0x1ad Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8851d1f5>] :kvm:kvm_ioapic_set_irq+0x5f/0x61 Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8851e5bd>] :kvm:kvm_set_ioapic_irq+0x15/0x17 Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8851e6ec>] :kvm:kvm_set_irq+0x61/0x8a Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8851d4bc>] :kvm:kvm_inject_pit_timer_irqs+0x7f/0xd9 Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8851ae1e>] :kvm:kvm_inject_pending_timer_irqs+0x19/0x1d Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8850d91d>] :kvm:kvm_arch_vcpu_ioctl_run+0x3e3/0x929 Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff81110ae5>] ? inode_has_perm+0x6b/0x7a Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8850971b>] :kvm:kvm_vcpu_ioctl+0xf9/0x462 Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff81110b9b>] ? file_has_perm+0xa7/0xb6 Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff810bc4b2>] do_ioctl+0x2a/0x77 Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff810bc753>] vfs_ioctl+0x254/0x271 Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff810bc7c7>] sys_ioctl+0x57/0x7c Mar 10 09:19:02 jmeesoa1 kernel: [<ffffffff8100c37e>] traceret+0x0/0x5 Mar 10 09:19:02 jmeesoa1 kernel: We are running KVM-84 on 2.6.24.7-75ibmrt2.18 #1 SMP PREEMPT RT on IBM HS21 blades Intel(R) Xeon(R) CPU E5450 @ 3.00GHz The guests are RHEL4.4 started on host with: qemu-system-x86_64 -localtime -name jmeevm03 -hda /zoo/SosDevVm03.cow -m 4048 -net nic,macaddr=00:00:8F:80:00:03 -net tap -smp 2 -vnc :6 >From the menu.lst on guests: kernel /boot/vmlinuz-2.6.9-42.ELsmp ro root=LABEL=/ clock=pit quiet AND ntp running on guests an host Is this a kernel problem or a KVM problem? -Thanks ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2679041&group_id=180599 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
