The following happened when I tried to reboot a virtual machine (host running qemu 0.13.0, kernel 2.6.36.2). After a while, the server hanged and was no longer reachable.
kvm: 3927: cpu0 unhandled wrmsr: 0x198 data 0 kvm: 3927: cpu1 unhandled wrmsr: 0x198 data 0 rmap_remove: ffff88060e9437f8 0 1->BUG ------------[ cut here ]------------ kernel BUG at arch/x86/kvm/mmu.c:655! invalid opcode: 0000 [#1] SMP last sysfs file: /sys/kernel/uevent_seqnum CPU 0 Modules linked in: ipt_MASQUERADE vhost_net kvm_intel kvm iptable_filter xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables bridge stp coretemp f71882fg snd_pcm snd_timer tpm_tis snd tpm soundcore tpm_bios snd_page_alloc i2c_i801 i7core_edac pcspkr edac_core shpchp r8169 mii raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 ahci libahci sata_nv sata_sil sata_via 3w_9xxx 3w_xxxx [last unloaded: scsi_wait_scan] Pid: 3927, comm: kvm Not tainted 2.6.36.2 #1 MSI X58 Pro-E (MS-7522)/MS-7522 RIP: 0010:[<ffffffffa024261c>] [<ffffffffa024261c>] drop_spte+0x1ec/0x1f0 [kvm] RSP: 0018:ffff88061414bb58 EFLAGS: 00010292 RAX: 000000000000002e RBX: ffff88060e9437f8 RCX: 00000000ffffffff RDX: 0000000000000000 RSI: 0000000000000082 RDI: 0000000000000246 RBP: ffff88061414bb68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000003 R12: ffff880520e60000 R13: ffff8804f4514820 R14: ffff880520e60000 R15: 0000000000000000 FS: 00007f049b859730(0000) GS:ffff880001e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007f7f1dc2b000 CR3: 00000004f4464000 CR4: 00000000000026e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process kvm (pid: 3927, threadinfo ffff88061414a000, task ffff8806107596d0) Stack: ffff88060e9437f8 00000000000000ff ffff88061414bba8 ffffffffa02427ba <0> ffff88061414bbb8 ffff8806140fb140 ffff880520e60000 ffff880520e62320 <0> ffff88061414bbb8 0000000000000001 ffff88061414bbe8 ffffffffa024334e Call Trace: [<ffffffffa02427ba>] kvm_mmu_prepare_zap_page+0x8a/0x2f0 [kvm] [<ffffffffa024334e>] kvm_mmu_zap_all+0x4e/0x90 [kvm] [<ffffffffa0236026>] kvm_arch_flush_shadow+0x16/0x30 [kvm] [<ffffffffa022af20>] __kvm_set_memory_region+0x2e0/0x7e0 [kvm] [<ffffffffa0239dbd>] ? kvm_set_msr_common+0x4fd/0xd40 [kvm] [<ffffffffa024fdc7>] ? pic_unlock+0x27/0xc0 [kvm] [<ffffffffa022b461>] kvm_set_memory_region+0x41/0x70 [kvm] [<ffffffffa022b4ad>] kvm_vm_ioctl_set_memory_region+0x1d/0x30 [kvm] [<ffffffffa022ba7d>] kvm_vm_ioctl+0x3fd/0x440 [kvm] [<ffffffff8106c1b0>] ? do_send_sig_info+0x70/0x90 [<ffffffff8124dd36>] ? security_task_kill+0x16/0x20 [<ffffffff8114e60f>] do_vfs_ioctl+0x9f/0x550 [<ffffffff8108db49>] ? sys_futex+0x89/0x160 [<ffffffff8114eb61>] sys_ioctl+0xa1/0xb0 [<ffffffff8113e788>] ? sys_read+0x88/0x90 [<ffffffff8100a332>] system_call_fastpath+0x16/0x1b Code: a4 48 8b 13 48 89 de 48 c7 c7 70 9f 25 a0 e8 9b b5 32 e1 0f 0b eb fe 48 8b 13 48 89 de 48 c7 c7 90 9f 25 a0 31 c0 e8 83 b5 32 e1 <0f> 0b eb fe 55 48 89 e5 41 55 41 54 53 48 83 ec 08 0f 1f 44 00 RIP [<ffffffffa024261c>] drop_spte+0x1ec/0x1f0 [kvm] RSP <ffff88061414bb58> ---[ end trace e0bc209dfb014a9c ]--- BUG: soft lockup - CPU#0 stuck for 67s! [qm:6844] Modules linked in: ipt_MASQUERADE vhost_net kvm_intel kvm iptable_filter xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables bridge stp coretemp f71882fg snd_pcm snd_timer tpm_tis snd tpm soundcore tpm_bios snd_page_alloc i2c_i801 i7core_edac pcspkr edac_core shpchp r8169 mii raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 ahci libahci sata_nv sata_sil sata_via 3w_9xxx 3w_xxxx [last unloaded: scsi_wait_scan] CPU 0 Modules linked in: ipt_MASQUERADE vhost_net kvm_intel kvm iptable_filter xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables bridge stp coretemp f71882fg snd_pcm snd_timer tpm_tis snd tpm soundcore tpm_bios snd_page_alloc i2c_i801 i7core_edac pcspkr edac_core shpchp r8169 mii raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 ahci libahci sata_nv sata_sil sata_via 3w_9xxx 3w_xxxx [last unloaded: scsi_wait_scan] Pid: 6844, comm: qm Tainted: G D 2.6.36.2 #1 MSI X58 Pro-E (MS-7522)/MS-7522 RIP: 0010:[<ffffffff810326d4>] [<ffffffff810326d4>] __ticket_spin_lock+0x14/0x20 RSP: 0000:ffff88014606d7e8 EFLAGS: 00000293 RAX: 000000000000b2b0 RBX: ffff88014606d7e8 RCX: ffffe8ffffc11db8 RDX: 0000000000000000 RSI: ffff880620819500 RDI: ffff880520e60000 RBP: ffffffff8100acce R08: 0000000000000000 R09: ffff8806208197c8 R10: ffff88014606d7a8 R11: 0000000000000000 R12: ffffffffa024271d R13: ffff88014606d778 R14: ffff880612968000 R15: ffffc90015c48010 FS: 00007f4bafba06e0(0000) GS:ffff880001e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000019f4018 CR3: 000000014611d000 CR4: 00000000000026e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process qm (pid: 6844, threadinfo ffff88014606c000, task ffff8806233cdb40) Stack: ffff88014606d7f8 ffffffff81570abe ffff88014606d838 ffffffffa022bf52 <0> ffff880620819500 ffff880520e62448 0000000000000000 ffff880620819500 <0> 00007f0408000000 ffff88014606da18 ffff88014606d868 ffffffff81126d9e Call Trace: [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffffa022bf52>] ? kvm_mmu_notifier_clear_flush_young+0x42/0x90 [kvm] [<ffffffff81126d9e>] ? __mmu_notifier_clear_flush_young+0x4e/0x70 [<ffffffff811121c1>] ? page_referenced_one+0xd1/0x130 [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffff81114013>] ? page_referenced+0x143/0x390 [<ffffffff810f84d6>] ? shrink_active_list+0x1d6/0x370 [<ffffffff810f8163>] ? shrink_inactive_list+0x233/0x3d0 [<ffffffff810f8b28>] ? shrink_zone+0x4b8/0x7f0 [<ffffffff810ed90a>] ? zone_watermark_ok+0x2a/0xf0 [<ffffffff810f9efb>] ? do_try_to_free_pages+0x9b/0x440 [<ffffffff810fa52a>] ? try_to_free_pages+0xba/0x110 [<ffffffff810f0463>] ? __alloc_pages_nodemask+0x473/0x890 [<ffffffff811256f9>] ? alloc_page_vma+0x89/0x140 [<ffffffff8110a727>] ? handle_mm_fault+0x667/0xb80 [<ffffffff8113de19>] ? do_sync_read+0xd9/0x120 [<ffffffff815748ab>] ? do_page_fault+0x1eb/0x490 [<ffffffff8124e73a>] ? security_file_permission+0x7a/0x90 [<ffffffff8113e5f7>] ? vfs_read+0x127/0x180 [<ffffffff81571415>] ? page_fault+0x25/0x30 Code: c1 d1 24 03 81 e9 dd fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 55 b8 00 01 00 00 48 89 e5 f0 66 0f c1 07 38 e0 74 06 f3 90 <8a> 07 eb f6 c9 c3 66 0f 1f 44 00 00 55 48 89 e5 0f b7 07 38 e0 Call Trace: [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffffa022bf52>] ? kvm_mmu_notifier_clear_flush_young+0x42/0x90 [kvm] [<ffffffff81126d9e>] ? __mmu_notifier_clear_flush_young+0x4e/0x70 [<ffffffff811121c1>] ? page_referenced_one+0xd1/0x130 [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffff81114013>] ? page_referenced+0x143/0x390 [<ffffffff810f84d6>] ? shrink_active_list+0x1d6/0x370 [<ffffffff810f8163>] ? shrink_inactive_list+0x233/0x3d0 [<ffffffff810f8b28>] ? shrink_zone+0x4b8/0x7f0 [<ffffffff810ed90a>] ? zone_watermark_ok+0x2a/0xf0 [<ffffffff810f9efb>] ? do_try_to_free_pages+0x9b/0x440 [<ffffffff810fa52a>] ? try_to_free_pages+0xba/0x110 [<ffffffff810f0463>] ? __alloc_pages_nodemask+0x473/0x890 [<ffffffff811256f9>] ? alloc_page_vma+0x89/0x140 [<ffffffff8110a727>] ? handle_mm_fault+0x667/0xb80 [<ffffffff8113de19>] ? do_sync_read+0xd9/0x120 [<ffffffff815748ab>] ? do_page_fault+0x1eb/0x490 [<ffffffff8124e73a>] ? security_file_permission+0x7a/0x90 [<ffffffff8113e5f7>] ? vfs_read+0x127/0x180 [<ffffffff81571415>] ? page_fault+0x25/0x30 BUG: soft lockup - CPU#4 stuck for 67s! [kswapd0:60] Modules linked in: ipt_MASQUERADE vhost_net kvm_intel kvm iptable_filter xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables bridge stp coretemp f71882fg snd_pcm snd_timer tpm_tis snd tpm soundcore tpm_bios snd_page_alloc i2c_i801 i7core_edac pcspkr edac_core shpchp r8169 mii raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 ahci libahci sata_nv sata_sil sata_via 3w_9xxx 3w_xxxx [last unloaded: scsi_wait_scan] CPU 4 Modules linked in: ipt_MASQUERADE vhost_net kvm_intel kvm iptable_filter xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables bridge stp coretemp f71882fg snd_pcm snd_timer tpm_tis snd tpm soundcore tpm_bios snd_page_alloc i2c_i801 i7core_edac pcspkr edac_core shpchp r8169 mii raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 ahci libahci sata_nv sata_sil sata_via 3w_9xxx 3w_xxxx [last unloaded: scsi_wait_scan] Pid: 60, comm: kswapd0 Tainted: G D 2.6.36.2 #1 MSI X58 Pro-E (MS-7522)/MS-7522 RIP: 0010:[<ffffffff810326d6>] [<ffffffff810326d6>] __ticket_spin_lock+0x16/0x20 RSP: 0018:ffff880623413cc0 EFLAGS: 00000297 RAX: 000000000000b1b0 RBX: ffff880623413cc0 RCX: ffffe8ffffc91db8 RDX: 0000000000000000 RSI: ffff880520e60280 RDI: ffff880520e60000 RBP: ffffffff8100acce R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000000000c R12: ffffea0014e0cad0 R13: ffffffff810f1a8a R14: ffff880623413c40 R15: ffffea0014e0cd38 FS: 0000000000000000(0000) GS:ffff880001e80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007f32b5b88c40 CR3: 0000000001a2a000 CR4: 00000000000026e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process kswapd0 (pid: 60, threadinfo ffff880623412000, task ffff880624564470) Stack: ffff880623413cd0 ffffffff81570abe ffff880623413d40 ffffffffa024377f <0> ffff880100000548 ffff880100000540 ffff880623413d00 0000000081570abe <0> ffff880623413d00 ffff880623413d00 ffff880623413d10 0000000000000000 Call Trace: [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffffa024377f>] ? mmu_shrink+0xaf/0x170 [kvm] [<ffffffff810f8ffd>] ? shrink_slab+0x8d/0x190 [<ffffffff810f9948>] ? kswapd+0x428/0x940 [<ffffffff81079670>] ? autoremove_wake_function+0x0/0x40 [<ffffffff810f9520>] ? kswapd+0x0/0x940 [<ffffffff810790ee>] ? kthread+0x9e/0xb0 [<ffffffff8100b124>] ? kernel_thread_helper+0x4/0x10 [<ffffffff81079050>] ? kthread+0x0/0xb0 [<ffffffff8100b120>] ? kernel_thread_helper+0x0/0x10 Code: 24 03 81 e9 dd fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 55 b8 00 01 00 00 48 89 e5 f0 66 0f c1 07 38 e0 74 06 f3 90 8a 07 <eb> f6 c9 c3 66 0f 1f 44 00 00 55 48 89 e5 0f b7 07 38 e0 8d 90 Call Trace: [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffffa024377f>] ? mmu_shrink+0xaf/0x170 [kvm] [<ffffffff810f8ffd>] ? shrink_slab+0x8d/0x190 [<ffffffff810f9948>] ? kswapd+0x428/0x940 [<ffffffff81079670>] ? autoremove_wake_function+0x0/0x40 [<ffffffff810f9520>] ? kswapd+0x0/0x940 [<ffffffff810790ee>] ? kthread+0x9e/0xb0 [<ffffffff8100b124>] ? kernel_thread_helper+0x4/0x10 [<ffffffff81079050>] ? kthread+0x0/0xb0 [<ffffffff8100b120>] ? kernel_thread_helper+0x0/0x10 vmbr0: received packet on eth0 with own address as source address BUG: soft lockup - CPU#2 stuck for 67s! [apache2:6803] Modules linked in: ipt_MASQUERADE vhost_net kvm_intel kvm iptable_filter xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables bridge stp coretemp f71882fg snd_pcm snd_timer tpm_tis snd tpm soundcore tpm_bios snd_page_alloc i2c_i801 i7core_edac pcspkr edac_core shpchp r8169 mii raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 ahci libahci sata_nv sata_sil sata_via 3w_9xxx 3w_xxxx [last unloaded: scsi_wait_scan] CPU 2 Modules linked in: ipt_MASQUERADE vhost_net kvm_intel kvm iptable_filter xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables bridge stp coretemp f71882fg snd_pcm snd_timer tpm_tis snd tpm soundcore tpm_bios snd_page_alloc i2c_i801 i7core_edac pcspkr edac_core shpchp r8169 mii raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 ahci libahci sata_nv sata_sil sata_via 3w_9xxx 3w_xxxx [last unloaded: scsi_wait_scan] Pid: 6803, comm: apache2 Tainted: G D 2.6.36.2 #1 MSI X58 Pro-E (MS-7522)/MS-7522 RIP: 0010:[<ffffffff810326d6>] [<ffffffff810326d6>] __ticket_spin_lock+0x16/0x20 RSP: 0000:ffff8801460bf9b8 EFLAGS: 00000297 RAX: 0000000000007271 RBX: ffff8801460bf9b8 RCX: 0000000000000002 RDX: 00000000000200da RSI: 0000000000000000 RDI: ffffffffa0261a88 RBP: ffffffff8100acce R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000000000c R12: ffffffff810f1a8a R13: ffff8801460bf938 R14: ffff880100000b80 R15: 0000000000000000 FS: 00007fd76a5ef750(0000) GS:ffff880001e40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000002cabae0 CR3: 00000005b7f27000 CR4: 00000000000026e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process apache2 (pid: 6803, threadinfo ffff8801460be000, task ffff8806236cdb40) Stack: ffff8801460bf9c8 ffffffff81570abe ffff8801460bfa38 ffffffffa02436f8 <0> ffff880100000548 ffff880100000540 ffff8801460bf9f8 ffffffff81570abe <0> ffff8801460bfa38 ffffffff8118e1db ffff8801460bfa08 0000000000000000 Call Trace: [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffffa02436f8>] ? mmu_shrink+0x28/0x170 [kvm] [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffff8118e1db>] ? mb_cache_shrink_fn+0xfb/0x160 [<ffffffff810f8ffd>] ? shrink_slab+0x8d/0x190 [<ffffffff810fa15c>] ? do_try_to_free_pages+0x2fc/0x440 [<ffffffff810fa52a>] ? try_to_free_pages+0xba/0x110 [<ffffffff810f0463>] ? __alloc_pages_nodemask+0x473/0x890 [<ffffffff811256f9>] ? alloc_page_vma+0x89/0x140 [<ffffffff81109999>] ? do_wp_page+0x209/0x930 [<ffffffff81105f3d>] ? __do_fault+0x47d/0x580 [<ffffffff8110a6fd>] ? handle_mm_fault+0x63d/0xb80 [<ffffffff815748ab>] ? do_page_fault+0x1eb/0x490 [<ffffffff8110f438>] ? do_brk+0x278/0x360 [<ffffffff81571415>] ? page_fault+0x25/0x30 Code: 24 03 81 e9 dd fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 55 b8 00 01 00 00 48 89 e5 f0 66 0f c1 07 38 e0 74 06 f3 90 8a 07 <eb> f6 c9 c3 66 0f 1f 44 00 00 55 48 89 e5 0f b7 07 38 e0 8d 90 Call Trace: [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffffa02436f8>] ? mmu_shrink+0x28/0x170 [kvm] [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffff8118e1db>] ? mb_cache_shrink_fn+0xfb/0x160 [<ffffffff810f8ffd>] ? shrink_slab+0x8d/0x190 [<ffffffff810fa15c>] ? do_try_to_free_pages+0x2fc/0x440 [<ffffffff810fa52a>] ? try_to_free_pages+0xba/0x110 [<ffffffff810f0463>] ? __alloc_pages_nodemask+0x473/0x890 [<ffffffff811256f9>] ? alloc_page_vma+0x89/0x140 [<ffffffff81109999>] ? do_wp_page+0x209/0x930 [<ffffffff81105f3d>] ? __do_fault+0x47d/0x580 [<ffffffff8110a6fd>] ? handle_mm_fault+0x63d/0xb80 [<ffffffff815748ab>] ? do_page_fault+0x1eb/0x490 [<ffffffff8110f438>] ? do_brk+0x278/0x360 [<ffffffff81571415>] ? page_fault+0x25/0x30 BUG: soft lockup - CPU#3 stuck for 67s! [apache2:6865] Modules linked in: ipt_MASQUERADE vhost_net kvm_intel kvm iptable_filter xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables bridge stp coretemp f71882fg snd_pcm snd_timer tpm_tis snd tpm soundcore tpm_bios snd_page_alloc i2c_i801 i7core_edac pcspkr edac_core shpchp r8169 mii raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 ahci libahci sata_nv sata_sil sata_via 3w_9xxx 3w_xxxx [last unloaded: scsi_wait_scan] CPU 3 Modules linked in: ipt_MASQUERADE vhost_net kvm_intel kvm iptable_filter xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables bridge stp coretemp f71882fg snd_pcm snd_timer tpm_tis snd tpm soundcore tpm_bios snd_page_alloc i2c_i801 i7core_edac pcspkr edac_core shpchp r8169 mii raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 ahci libahci sata_nv sata_sil sata_via 3w_9xxx 3w_xxxx [last unloaded: scsi_wait_scan] Pid: 6865, comm: apache2 Tainted: G D 2.6.36.2 #1 MSI X58 Pro-E (MS-7522)/MS-7522 RIP: 0010:[<ffffffff810326d4>] [<ffffffff810326d4>] __ticket_spin_lock+0x14/0x20 RSP: 0000:ffff880621f039b8 EFLAGS: 00000293 RAX: 0000000000007471 RBX: ffff880621f039b8 RCX: 0000000000000002 RDX: 00000000000200da RSI: 0000000000000000 RDI: ffffffffa0261a88 RBP: ffffffff8100acce R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000000000c R12: ffffffff810f1a8a R13: ffff880621f03938 R14: ffff880100000b80 R15: 00000000000006f4 FS: 00007fd76a5ef750(0000) GS:ffff880001e60000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001cf30e0 CR3: 00000001460e3000 CR4: 00000000000026e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process apache2 (pid: 6865, threadinfo ffff880621f02000, task ffff8805da4b5b40) Stack: ffff880621f039c8 ffffffff81570abe ffff880621f03a38 ffffffffa02436f8 <0> ffff880100000548 ffff880100000540 ffff880621f039f8 ffffffff81570abe <0> ffff880621f03a38 ffffffff8118e1db ffff880621f03a08 0000000000000000 Call Trace: [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffffa02436f8>] ? mmu_shrink+0x28/0x170 [kvm] [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffff8118e1db>] ? mb_cache_shrink_fn+0xfb/0x160 [<ffffffff810f8ffd>] ? shrink_slab+0x8d/0x190 [<ffffffff810fa15c>] ? do_try_to_free_pages+0x2fc/0x440 [<ffffffff810fa52a>] ? try_to_free_pages+0xba/0x110 [<ffffffff810f0463>] ? __alloc_pages_nodemask+0x473/0x890 [<ffffffff811256f9>] ? alloc_page_vma+0x89/0x140 [<ffffffff81109999>] ? do_wp_page+0x209/0x930 [<ffffffff81105f3d>] ? __do_fault+0x47d/0x580 [<ffffffff8110a6fd>] ? handle_mm_fault+0x63d/0xb80 [<ffffffff81148831>] ? path_put+0x31/0x40 [<ffffffff8114cf70>] ? do_filp_open+0x250/0x660 [<ffffffff815748ab>] ? do_page_fault+0x1eb/0x490 [<ffffffff81079670>] ? autoremove_wake_function+0x0/0x40 [<ffffffff81157f89>] ? alloc_fd+0x129/0x150 [<ffffffff81571415>] ? page_fault+0x25/0x30 Code: c1 d1 24 03 81 e9 dd fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 55 b8 00 01 00 00 48 89 e5 f0 66 0f c1 07 38 e0 74 06 f3 90 <8a> 07 eb f6 c9 c3 66 0f 1f 44 00 00 55 48 89 e5 0f b7 07 38 e0 Call Trace: [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffffa02436f8>] ? mmu_shrink+0x28/0x170 [kvm] [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffff8118e1db>] ? mb_cache_shrink_fn+0xfb/0x160 [<ffffffff810f8ffd>] ? shrink_slab+0x8d/0x190 [<ffffffff810fa15c>] ? do_try_to_free_pages+0x2fc/0x440 [<ffffffff810fa52a>] ? try_to_free_pages+0xba/0x110 [<ffffffff810f0463>] ? __alloc_pages_nodemask+0x473/0x890 [<ffffffff811256f9>] ? alloc_page_vma+0x89/0x140 [<ffffffff81109999>] ? do_wp_page+0x209/0x930 [<ffffffff81105f3d>] ? __do_fault+0x47d/0x580 [<ffffffff8110a6fd>] ? handle_mm_fault+0x63d/0xb80 [<ffffffff81148831>] ? path_put+0x31/0x40 [<ffffffff8114cf70>] ? do_filp_open+0x250/0x660 [<ffffffff815748ab>] ? do_page_fault+0x1eb/0x490 [<ffffffff81079670>] ? autoremove_wake_function+0x0/0x40 [<ffffffff81157f89>] ? alloc_fd+0x129/0x150 [<ffffffff81571415>] ? page_fault+0x25/0x30 BUG: soft lockup - CPU#5 stuck for 67s! [apache2:6862] Modules linked in: ipt_MASQUERADE vhost_net kvm_intel kvm iptable_filter xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables bridge stp coretemp f71882fg snd_pcm snd_timer tpm_tis snd tpm soundcore tpm_bios snd_page_alloc i2c_i801 i7core_edac pcspkr edac_core shpchp r8169 mii raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 ahci libahci sata_nv sata_sil sata_via 3w_9xxx 3w_xxxx [last unloaded: scsi_wait_scan] CPU 5 Modules linked in: ipt_MASQUERADE vhost_net kvm_intel kvm iptable_filter xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables bridge stp coretemp f71882fg snd_pcm snd_timer tpm_tis snd tpm soundcore tpm_bios snd_page_alloc i2c_i801 i7core_edac pcspkr edac_core shpchp r8169 mii raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 ahci libahci sata_nv sata_sil sata_via 3w_9xxx 3w_xxxx [last unloaded: scsi_wait_scan] Pid: 6862, comm: apache2 Tainted: G D 2.6.36.2 #1 MSI X58 Pro-E (MS-7522)/MS-7522 RIP: 0010:[<ffffffff810326d6>] [<ffffffff810326d6>] __ticket_spin_lock+0x16/0x20 RSP: 0000:ffff88044c5ab9b8 EFLAGS: 00000293 RAX: 0000000000007371 RBX: ffff88044c5ab9b8 RCX: 0000000000000002 RDX: 00000000000200da RSI: 0000000000000000 RDI: ffffffffa0261a88 RBP: ffffffff8100acce R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000000000c R12: ffffffff810f1a8a R13: ffff88044c5ab938 R14: ffff880100000b80 R15: 0000000000000de8 FS: 00007fd76a5ef750(0000) GS:ffff880001ea0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000282a034 CR3: 000000060eb4b000 CR4: 00000000000026e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process apache2 (pid: 6862, threadinfo ffff88044c5aa000, task ffff8806233616d0) Stack: ffff88044c5ab9c8 ffffffff81570abe ffff88044c5aba38 ffffffffa02436f8 <0> ffff880100000548 ffff880100000540 ffff88044c5ab9f8 ffffffff81570abe <0> ffff88044c5aba38 ffffffff8118e1db ffff88044c5aba08 0000000000000000 Call Trace: [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffffa02436f8>] ? mmu_shrink+0x28/0x170 [kvm] [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffff8118e1db>] ? mb_cache_shrink_fn+0xfb/0x160 [<ffffffff810f8ffd>] ? shrink_slab+0x8d/0x190 [<ffffffff810fa15c>] ? do_try_to_free_pages+0x2fc/0x440 [<ffffffff810fa52a>] ? try_to_free_pages+0xba/0x110 [<ffffffff810f0463>] ? __alloc_pages_nodemask+0x473/0x890 [<ffffffff811256f9>] ? alloc_page_vma+0x89/0x140 [<ffffffff81109999>] ? do_wp_page+0x209/0x930 [<ffffffff81105f3d>] ? __do_fault+0x47d/0x580 [<ffffffff810bc3d5>] ? call_rcu_sched+0x15/0x20 [<ffffffff8110a6fd>] ? handle_mm_fault+0x63d/0xb80 [<ffffffff81148831>] ? path_put+0x31/0x40 [<ffffffff8114cf70>] ? do_filp_open+0x250/0x660 [<ffffffff815748ab>] ? do_page_fault+0x1eb/0x490 [<ffffffff81079670>] ? autoremove_wake_function+0x0/0x40 [<ffffffff81157f89>] ? alloc_fd+0x129/0x150 [<ffffffff81571415>] ? page_fault+0x25/0x30 Code: 24 03 81 e9 dd fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 55 b8 00 01 00 00 48 89 e5 f0 66 0f c1 07 38 e0 74 06 f3 90 8a 07 <eb> f6 c9 c3 66 0f 1f 44 00 00 55 48 89 e5 0f b7 07 38 e0 8d 90 Call Trace: [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffffa02436f8>] ? mmu_shrink+0x28/0x170 [kvm] [<ffffffff81570abe>] ? _raw_spin_lock+0xe/0x20 [<ffffffff8118e1db>] ? mb_cache_shrink_fn+0xfb/0x160 [<ffffffff810f8ffd>] ? shrink_slab+0x8d/0x190 [<ffffffff810fa15c>] ? do_try_to_free_pages+0x2fc/0x440 [<ffffffff810fa52a>] ? try_to_free_pages+0xba/0x110 [<ffffffff810f0463>] ? __alloc_pages_nodemask+0x473/0x890 [<ffffffff811256f9>] ? alloc_page_vma+0x89/0x140 [<ffffffff81109999>] ? do_wp_page+0x209/0x930 [<ffffffff81105f3d>] ? __do_fault+0x47d/0x580 [<ffffffff810bc3d5>] ? call_rcu_sched+0x15/0x20 [<ffffffff8110a6fd>] ? handle_mm_fault+0x63d/0xb80 [<ffffffff81148831>] ? path_put+0x31/0x40 [<ffffffff8114cf70>] ? do_filp_open+0x250/0x660 [<ffffffff815748ab>] ? do_page_fault+0x1eb/0x490 [<ffffffff81079670>] ? autoremove_wake_function+0x0/0x40 [<ffffffff81157f89>] ? alloc_fd+0x129/0x150 [<ffffffff81571415>] ? page_fault+0x25/0x30 -- Tomasz Chmielewski http://wpkg.org -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
