Bug 597586

Summary: kdump failed in virtio driver
Product: [Fedora] Fedora Reporter: Qian Cai <qcai>
Component: kernelAssignee: Fedora Virtualization Maintainers <virt-maint>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: 14CC: anton, dougsland, gansalmon, itamar, jonathan, kernel-maint, kevin
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-04-25 03:17:37 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 597580    

Description Qian Cai 2010-05-29 17:31:47 UTC 
Description of problem:
When kdumping in a KVM guest with virtio driver, it panics here,

Loading virtio_pci.ko module
ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 10
virtio-pci 0000:00:03.0: PCI INT A -> Link[LNKC] -> GSI 10 (level, high) -> IRQ 10
virtio-pci 0000:00:03.0: setting latency timer to 64
virtio-pci 0000:00:04.0: PCI INT A -> Link[LNKD] -> GSI 11 (level, high) -> IRQ 11
virtio-pci 0000:00:04.0: setting latency timer to 64
  alloc irq_desc for 24 on node -1
  alloc kstat_irqs on node -1
virtio-pci 0000:00:04.0: irq 24 for MSI/MSI-X
  alloc irq_desc for 25 on node -1
  alloc kstat_irqs on node -1
virtio-pci 0000:00:04.0: irq 25 for MSI/MSI-X
blk_queue_max_segments: set to minimum 1
 vda:
------------[ cut here ]------------
kernel BUG at drivers/block/virtio_blk.c:170!
invalid opcode: 0000 [#1] SMP 
last sysfs file: /sys/kernel/uevent_helper
CPU 0 
Modules linked in: virtio_pci(+) mii i2c_core snd_page_alloc soundcore virtio_balloon ac97_bus ipv6 ip6_tables virtio_blk virtio virtio_ring

Pid: 113, comm: insmod Not tainted 2.6.34-11.fc14.x86_64 #1 /Bochs
RIP: 0010:[<ffffffffa000e251>]  [<ffffffffa000e251>] do_virtblk_request+0x5c/0x26c [virtio_blk]
RSP: 0018:ffff8800076d34d8  EFLAGS: 00010002
RAX: 0000000000000003 RBX: ffff8800074d9740 RCX: ffff8800074d9740
RDX: 0000000100000080 RSI: ffff88000766e620 RDI: 0000000000000000
RBP: ffff8800076d3548 R08: ffff8800074d9740 R09: 0000000000000001
R10: 0000000000000046 R11: 0000000000000001 R12: ffff8800076e4148
R13: ffff88000766e620 R14: 0000000000000002 R15: ffff8800074d9740
FS:  0000000000000000(0000) GS:ffff880003200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00000000004b2135 CR3: 00000000075de000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process insmod (pid: 113, threadinfo ffff8800076d2000, task ffff880007662480)
Stack:
 ffff8800074d9880 0000000000000001 ffff8800076d3528 ffff8800076e41a0
<0> ffff8800076e41e8 ffff8800076e41c0 00000000076d3568 ffff8800074d9740
<0> ffff8800031494b0 ffff8800074d9740 ffff8800031494b0 ffff8800076d3658
Call Trace:
 [<ffffffff810dbca6>] ? sync_page+0x0/0x55
 [<ffffffff8121878a>] __generic_unplug_device+0x35/0x3a
 [<ffffffff81218a3b>] generic_unplug_device+0x2e/0x3e
 [<ffffffff81216b03>] blk_unplug+0x29/0x2d
 [<ffffffff81216b19>] blk_backing_dev_unplug+0x12/0x14
 [<ffffffff81142389>] block_sync_page+0x38/0x3c
 [<ffffffff810dbcf2>] sync_page+0x4c/0x55
 [<ffffffff81480fc0>] __wait_on_bit_lock+0x46/0x8f
 [<ffffffff810dbc8d>] __lock_page+0x66/0x6d
 [<ffffffff8106add7>] ? wake_bit_function+0x0/0x33
 [<ffffffff810dc99a>] lock_page+0x3c/0x41
 [<ffffffff810dcbf2>] do_read_cache_page+0xc3/0x126
 [<ffffffff811482c7>] ? blkdev_readpage+0x0/0x1a
 [<ffffffff810dcc99>] read_cache_page_async+0x1c/0x1e
 [<ffffffff810dcca9>] read_cache_page+0xe/0x18
 [<ffffffff81175927>] read_dev_sector+0x33/0x96
 [<ffffffff81177dc4>] read_lba+0x7e/0xdf
 [<ffffffff8107c851>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffff81178270>] find_valid_gpt+0xcc/0x4cd
 [<ffffffff8107ad87>] ? trace_hardirqs_off+0xd/0xf
 [<ffffffff814832aa>] ? _raw_spin_unlock_irqrestore+0x40/0x56
 [<ffffffff811786eb>] efi_partition+0x7a/0x2e7
 [<ffffffff81480281>] ? printk+0x41/0x48
 [<ffffffff81176433>] rescan_partitions+0x184/0x3a7
 [<ffffffff81148a46>] __blkdev_get+0x2b2/0x3a8
 [<ffffffff8122b73b>] ? kobject_put+0x47/0x4b
 [<ffffffff81148b4c>] blkdev_get+0x10/0x12
 [<ffffffff81175ad2>] register_disk+0xdc/0x13f
 [<ffffffff8121f23b>] add_disk+0xaf/0x10b
 [<ffffffffa000ea84>] virtblk_probe+0x44f/0x48f [virtio_blk]
 [<ffffffff8117b079>] ? sysfs_do_create_link+0xe7/0x13c
 [<ffffffffa000e461>] ? blk_done+0x0/0xce [virtio_blk]
 [<ffffffffa00072df>] virtio_dev_probe+0xb7/0xdb [virtio]
 [<ffffffff812f11a7>] driver_probe_device+0xed/0x21a
 [<ffffffff812f138f>] __device_attach+0x3a/0x3f
 [<ffffffff812f1355>] ? __device_attach+0x0/0x3f
 [<ffffffff812f0283>] bus_for_each_drv+0x59/0x90
 [<ffffffff812f142f>] device_attach+0x6c/0x90
 [<ffffffff812f0097>] bus_probe_device+0x27/0x3e
 [<ffffffff812ee6b9>] device_add+0x3c2/0x59e
 [<ffffffff812ee8b3>] device_register+0x1e/0x22
 [<ffffffffa00073ec>] register_virtio_device+0x7b/0x99 [virtio]
 [<ffffffff81244f51>] ? pci_set_master+0x23/0x27
 [<ffffffffa00ace23>] virtio_pci_probe+0x161/0x1a5 [virtio_pci]
 [<ffffffff81246079>] local_pci_probe+0x17/0x1b
 [<ffffffff81247001>] pci_device_probe+0xcd/0xfd
 [<ffffffff812f0fcf>] ? driver_sysfs_add+0x4c/0x71
 [<ffffffff812f11a7>] driver_probe_device+0xed/0x21a
 [<ffffffff812f1331>] __driver_attach+0x5d/0x81
 [<ffffffff812f12d4>] ? __driver_attach+0x0/0x81
 [<ffffffff812f0573>] bus_for_each_dev+0x59/0x8e
 [<ffffffff812f0f2e>] driver_attach+0x1e/0x20
 [<ffffffff812f0b4f>] bus_add_driver+0xfa/0x263
 [<ffffffff812f1638>] driver_register+0x9e/0x10f
 [<ffffffff81247247>] __pci_register_driver+0x68/0xd8
 [<ffffffff812eea77>] ? __root_device_register+0x8a/0xa7
 [<ffffffffa00b0000>] ? virtio_pci_init+0x0/0x60 [virtio_pci]
 [<ffffffffa00b0048>] virtio_pci_init+0x48/0x60 [virtio_pci]
 [<ffffffff8100207d>] do_one_initcall+0x72/0x18a
 [<ffffffff8108a9ba>] sys_init_module+0xd8/0x23a
 [<ffffffff81009c72>] system_call_fastpath+0x16/0x1b
Code: 8d 84 24 a0 00 00 00 48 89 45 b0 49 8d 44 24 58 48 89 45 a8 e9 ef 01 00 00 41 0f b7 85 b8 00 00 00 83 c0 02 41 3b 44 24 70 76 04 <0f> 0b eb fe 49 8b 7c 24 68 be 20 00 00 00 e8 b8 f5 0c e1 48 85 
RIP  [<ffffffffa000e251>] do_virtblk_request+0x5c/0x26c [virtio_blk]
 RSP <ffff8800076d34d8>
---[ end trace 4fc53a6b4d90ec57 ]---
insmod used greatest stack depth: 2696 bytes left
input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input2
BUG: spinlock lockup on CPU#0, insmod/113, ffff8800076e4148
Pid: 113, comm: insmod Tainted: G      D    2.6.34-11.fc14.x86_64 #1
Call Trace:
 [<ffffffff81236e4b>] do_raw_spin_lock+0x112/0x142
 [<ffffffff812250f3>] ? rcu_read_lock+0x0/0x35
 [<ffffffff81482ac7>] _raw_spin_lock_irqsave+0x6e/0x88
 [<ffffffff81224e23>] ? cfq_exit_single_io_context+0x2e/0x5e
 [<ffffffff81224df5>] ? cfq_exit_single_io_context+0x0/0x5e
 [<ffffffff81224e23>] cfq_exit_single_io_context+0x2e/0x5e
 [<ffffffff81224df5>] ? cfq_exit_single_io_context+0x0/0x5e
 [<ffffffff8122548e>] call_for_each_cic+0x37/0x5d
 [<ffffffff812254c9>] cfq_exit_io_context+0x15/0x17
 [<ffffffff8121c374>] exit_io_context+0x80/0xac
 [<ffffffff8121c33f>] ? exit_io_context+0x4b/0xac
 [<ffffffff8107c851>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffff8105464c>] do_exit+0x776/0x7aa
 [<ffffffff814832aa>] ? _raw_spin_unlock_irqrestore+0x40/0x56
 [<ffffffff8148450f>] oops_end+0xbf/0xc7
 [<ffffffff8100d4d1>] die+0x5a/0x63
 [<ffffffff81483f28>] do_trap+0x121/0x130
 [<ffffffff8100b636>] do_invalid_op+0x94/0x9d
 [<ffffffffa000e251>] ? do_virtblk_request+0x5c/0x26c [virtio_blk]
 [<ffffffff812137a8>] ? elv_rb_del+0x35/0x4e
 [<ffffffff814826da>] ? trace_hardirqs_off_thunk+0x3a/0x3c
 [<ffffffff81483600>] ? irq_return+0x0/0x10
 [<ffffffff8100a95b>] invalid_op+0x1b/0x20
 [<ffffffffa000e251>] ? do_virtblk_request+0x5c/0x26c [virtio_blk]
 [<ffffffffa000e436>] ? do_virtblk_request+0x241/0x26c [virtio_blk]
 [<ffffffff810dbca6>] ? sync_page+0x0/0x55
 [<ffffffff8121878a>] __generic_unplug_device+0x35/0x3a
 [<ffffffff81218a3b>] generic_unplug_device+0x2e/0x3e
 [<ffffffff81216b03>] blk_unplug+0x29/0x2d
 [<ffffffff81216b19>] blk_backing_dev_unplug+0x12/0x14
 [<ffffffff81142389>] block_sync_page+0x38/0x3c
 [<ffffffff810dbcf2>] sync_page+0x4c/0x55
 [<ffffffff81480fc0>] __wait_on_bit_lock+0x46/0x8f
 [<ffffffff810dbc8d>] __lock_page+0x66/0x6d
 [<ffffffff8106add7>] ? wake_bit_function+0x0/0x33
 [<ffffffff810dc99a>] lock_page+0x3c/0x41
 [<ffffffff810dcbf2>] do_read_cache_page+0xc3/0x126
 [<ffffffff811482c7>] ? blkdev_readpage+0x0/0x1a
 [<ffffffff810dcc99>] read_cache_page_async+0x1c/0x1e
 [<ffffffff810dcca9>] read_cache_page+0xe/0x18
 [<ffffffff81175927>] read_dev_sector+0x33/0x96
 [<ffffffff81177dc4>] read_lba+0x7e/0xdf
 [<ffffffff8107c851>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffff81178270>] find_valid_gpt+0xcc/0x4cd
 [<ffffffff8107ad87>] ? trace_hardirqs_off+0xd/0xf
 [<ffffffff814832aa>] ? _raw_spin_unlock_irqrestore+0x40/0x56
 [<ffffffff811786eb>] efi_partition+0x7a/0x2e7
 [<ffffffff81480281>] ? printk+0x41/0x48
 [<ffffffff81176433>] rescan_partitions+0x184/0x3a7
 [<ffffffff81148a46>] __blkdev_get+0x2b2/0x3a8
 [<ffffffff8122b73b>] ? kobject_put+0x47/0x4b
 [<ffffffff81148b4c>] blkdev_get+0x10/0x12
 [<ffffffff81175ad2>] register_disk+0xdc/0x13f
 [<ffffffff8121f23b>] add_disk+0xaf/0x10b
 [<ffffffffa000ea84>] virtblk_probe+0x44f/0x48f [virtio_blk]
 [<ffffffff8117b079>] ? sysfs_do_create_link+0xe7/0x13c
 [<ffffffffa000e461>] ? blk_done+0x0/0xce [virtio_blk]
 [<ffffffffa00072df>] virtio_dev_probe+0xb7/0xdb [virtio]
 [<ffffffff812f11a7>] driver_probe_device+0xed/0x21a
 [<ffffffff812f138f>] __device_attach+0x3a/0x3f
 [<ffffffff812f1355>] ? __device_attach+0x0/0x3f
 [<ffffffff812f0283>] bus_for_each_drv+0x59/0x90
 [<ffffffff812f142f>] device_attach+0x6c/0x90
 [<ffffffff812f0097>] bus_probe_device+0x27/0x3e
 [<ffffffff812ee6b9>] device_add+0x3c2/0x59e
 [<ffffffff812ee8b3>] device_register+0x1e/0x22
 [<ffffffffa00073ec>] register_virtio_device+0x7b/0x99 [virtio]
 [<ffffffff81244f51>] ? pci_set_master+0x23/0x27
 [<ffffffffa00ace23>] virtio_pci_probe+0x161/0x1a5 [virtio_pci]
 [<ffffffff81246079>] local_pci_probe+0x17/0x1b
 [<ffffffff81247001>] pci_device_probe+0xcd/0xfd
 [<ffffffff812f0fcf>] ? driver_sysfs_add+0x4c/0x71
 [<ffffffff812f11a7>] driver_probe_device+0xed/0x21a
 [<ffffffff812f1331>] __driver_attach+0x5d/0x81
 [<ffffffff812f12d4>] ? __driver_attach+0x0/0x81
 [<ffffffff812f0573>] bus_for_each_dev+0x59/0x8e
 [<ffffffff812f0f2e>] driver_attach+0x1e/0x20
 [<ffffffff812f0b4f>] bus_add_driver+0xfa/0x263
 [<ffffffff812f1638>] driver_register+0x9e/0x10f
 [<ffffffff81247247>] __pci_register_driver+0x68/0xd8
 [<ffffffff812eea77>] ? __root_device_register+0x8a/0xa7
 [<ffffffffa00b0000>] ? virtio_pci_init+0x0/0x60 [virtio_pci]
 [<ffffffffa00b0048>] virtio_pci_init+0x48/0x60 [virtio_pci]
 [<ffffffff8100207d>] do_one_initcall+0x72/0x18a
 [<ffffffff8108a9ba>] sys_init_module+0xd8/0x23a
 [<ffffffff81009c72>] system_call_fastpath+0x16/0x1b
sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU 0 
Modules linked in: virtio_pci(+) mii i2c_core snd_page_alloc soundcore virtio_balloon ac97_bus ipv6 ip6_tables virtio_blk virtio virtio_ring

Pid: 113, comm: insmod Tainted: G      D    2.6.34-11.fc14.x86_64 #1 /Bochs
RIP: 0010:[<ffffffff81025154>]  [<ffffffff81025154>] _flat_send_IPI_mask+0x79/0xab
RSP: 0018:ffff8800076d3088  EFLAGS: 00010046
RAX: 0000000000000c00 RBX: 0000000001000000 RCX: 0000000000000000
RDX: ffff880007662480 RSI: 0000000000000002 RDI: 0000000000000300
RBP: ffff8800076d30a8 R08: 0000000000007765 R09: ffff8800076d2f48
R10: ffffffff8107ad87 R11: 0000000000000078 R12: 0000000000000046
R13: 0000000000000002 R14: 0000000000000c00 R15: 000000008eb41ac0
FS:  0000000000000000(0000) GS:ffff880003200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00000000004b2135 CR3: 0000000004a3e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process insmod (pid: 113, threadinfo ffff8800076d2000, task ffff880007662480)
Stack:
 0000000000000000 ffff880007662480 000000008eb41ac0 ffff8800076629b0
<0> ffff8800076d30b8 ffffffff810251ec ffff8800076d30d8 ffffffff81021bbc
<0> ffff8800076e4148 ffff8800076e4148 ffff8800076d3128 ffffffff81236e50
Call Trace:
 [<ffffffff810251ec>] flat_send_IPI_all+0x22/0x5c
 [<ffffffff81021bbc>] arch_trigger_all_cpu_backtrace+0x48/0x75
 [<ffffffff81236e50>] do_raw_spin_lock+0x117/0x142
 [<ffffffff812250f3>] ? rcu_read_lock+0x0/0x35
 [<ffffffff81482ac7>] _raw_spin_lock_irqsave+0x6e/0x88
 [<ffffffff81224e23>] ? cfq_exit_single_io_context+0x2e/0x5e
 [<ffffffff81224df5>] ? cfq_exit_single_io_context+0x0/0x5e
 [<ffffffff81224e23>] cfq_exit_single_io_context+0x2e/0x5e
 [<ffffffff81224df5>] ? cfq_exit_single_io_context+0x0/0x5e
 [<ffffffff8122548e>] call_for_each_cic+0x37/0x5d
 [<ffffffff812254c9>] cfq_exit_io_context+0x15/0x17
 [<ffffffff8121c374>] exit_io_context+0x80/0xac
 [<ffffffff8121c33f>] ? exit_io_context+0x4b/0xac
 [<ffffffff8107c851>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffff8105464c>] do_exit+0x776/0x7aa
 [<ffffffff814832aa>] ? _raw_spin_unlock_irqrestore+0x40/0x56
 [<ffffffff8148450f>] oops_end+0xbf/0xc7
 [<ffffffff8100d4d1>] die+0x5a/0x63
 [<ffffffff81483f28>] do_trap+0x121/0x130
 [<ffffffff8100b636>] do_invalid_op+0x94/0x9d
 [<ffffffffa000e251>] ? do_virtblk_request+0x5c/0x26c [virtio_blk]
 [<ffffffff812137a8>] ? elv_rb_del+0x35/0x4e
 [<ffffffff814826da>] ? trace_hardirqs_off_thunk+0x3a/0x3c
 [<ffffffff81483600>] ? irq_return+0x0/0x10
 [<ffffffff8100a95b>] invalid_op+0x1b/0x20
 [<ffffffffa000e251>] ? do_virtblk_request+0x5c/0x26c [virtio_blk]
 [<ffffffffa000e436>] ? do_virtblk_request+0x241/0x26c [virtio_blk]
 [<ffffffff810dbca6>] ? sync_page+0x0/0x55
 [<ffffffff8121878a>] __generic_unplug_device+0x35/0x3a
 [<ffffffff81218a3b>] generic_unplug_device+0x2e/0x3e
 [<ffffffff81216b03>] blk_unplug+0x29/0x2d
 [<ffffffff81216b19>] blk_backing_dev_unplug+0x12/0x14
 [<ffffffff81142389>] block_sync_page+0x38/0x3c
 [<ffffffff810dbcf2>] sync_page+0x4c/0x55
 [<ffffffff81480fc0>] __wait_on_bit_lock+0x46/0x8f
 [<ffffffff810dbc8d>] __lock_page+0x66/0x6d
 [<ffffffff8106add7>] ? wake_bit_function+0x0/0x33
 [<ffffffff810dc99a>] lock_page+0x3c/0x41
 [<ffffffff810dcbf2>] do_read_cache_page+0xc3/0x126
 [<ffffffff811482c7>] ? blkdev_readpage+0x0/0x1a
 [<ffffffff810dcc99>] read_cache_page_async+0x1c/0x1e
 [<ffffffff810dcca9>] read_cache_page+0xe/0x18
 [<ffffffff81175927>] read_dev_sector+0x33/0x96
 [<ffffffff81177dc4>] read_lba+0x7e/0xdf
 [<ffffffff8107c851>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffff81178270>] find_valid_gpt+0xcc/0x4cd
 [<ffffffff8107ad87>] ? trace_hardirqs_off+0xd/0xf
 [<ffffffff814832aa>] ? _raw_spin_unlock_irqrestore+0x40/0x56
 [<ffffffff811786eb>] efi_partition+0x7a/0x2e7
 [<ffffffff81480281>] ? printk+0x41/0x48
 [<ffffffff81176433>] rescan_partitions+0x184/0x3a7
 [<ffffffff81148a46>] __blkdev_get+0x2b2/0x3a8
 [<ffffffff8122b73b>] ? kobject_put+0x47/0x4b
 [<ffffffff81148b4c>] blkdev_get+0x10/0x12
 [<ffffffff81175ad2>] register_disk+0xdc/0x13f
 [<ffffffff8121f23b>] add_disk+0xaf/0x10b
 [<ffffffffa000ea84>] virtblk_probe+0x44f/0x48f [virtio_blk]
 [<ffffffff8117b079>] ? sysfs_do_create_link+0xe7/0x13c
 [<ffffffffa000e461>] ? blk_done+0x0/0xce [virtio_blk]
 [<ffffffffa00072df>] virtio_dev_probe+0xb7/0xdb [virtio]
 [<ffffffff812f11a7>] driver_probe_device+0xed/0x21a
 [<ffffffff812f138f>] __device_attach+0x3a/0x3f
 [<ffffffff812f1355>] ? __device_attach+0x0/0x3f
 [<ffffffff812f0283>] bus_for_each_drv+0x59/0x90
 [<ffffffff812f142f>] device_attach+0x6c/0x90
 [<ffffffff812f0097>] bus_probe_device+0x27/0x3e
 [<ffffffff812ee6b9>] device_add+0x3c2/0x59e
 [<ffffffff812ee8b3>] device_register+0x1e/0x22
 [<ffffffffa00073ec>] register_virtio_device+0x7b/0x99 [virtio]
 [<ffffffff81244f51>] ? pci_set_master+0x23/0x27
 [<ffffffffa00ace23>] virtio_pci_probe+0x161/0x1a5 [virtio_pci]
 [<ffffffff81246079>] local_pci_probe+0x17/0x1b
 [<ffffffff81247001>] pci_device_probe+0xcd/0xfd
 [<ffffffff812f0fcf>] ? driver_sysfs_add+0x4c/0x71
 [<ffffffff812f11a7>] driver_probe_device+0xed/0x21a
 [<ffffffff812f1331>] __driver_attach+0x5d/0x81
 [<ffffffff812f12d4>] ? __driver_attach+0x0/0x81
 [<ffffffff812f0573>] bus_for_each_dev+0x59/0x8e
 [<ffffffff812f0f2e>] driver_attach+0x1e/0x20
 [<ffffffff812f0b4f>] bus_add_driver+0xfa/0x263
 [<ffffffff812f1638>] driver_register+0x9e/0x10f
 [<ffffffff81247247>] __pci_register_driver+0x68/0xd8
 [<ffffffff812eea77>] ? __root_device_register+0x8a/0xa7
 [<ffffffffa00b0000>] ? virtio_pci_init+0x0/0x60 [virtio_pci]
 [<ffffffffa00b0048>] virtio_pci_init+0x48/0x60 [virtio_pci]
 [<ffffffff8100207d>] do_one_initcall+0x72/0x18a
 [<ffffffff8108a9ba>] sys_init_module+0xd8/0x23a
 [<ffffffff81009c72>] system_call_fastpath+0x16/0x1b
Code: f6 c4 10 75 f2 c1 e3 18 89 1c 25 10 b3 5f ff 44 89 e8 44 09 f0 41 81 ce 00 04 00 00 41 83 fd 02 41 0f 44 c6 89 04 25 00 b3 5f ff <41> f7 c4 00 02 00 00 75 11 4c 89 e7 57 9d 0f 1f 44 00 00 e8 0e 
Call Trace:
 [<ffffffff810251ec>] flat_send_IPI_all+0x22/0x5c
 [<ffffffff81021bbc>] arch_trigger_all_cpu_backtrace+0x48/0x75
 [<ffffffff81236e50>] do_raw_spin_lock+0x117/0x142
 [<ffffffff812250f3>] ? rcu_read_lock+0x0/0x35
 [<ffffffff81482ac7>] _raw_spin_lock_irqsave+0x6e/0x88
 [<ffffffff81224e23>] ? cfq_exit_single_io_context+0x2e/0x5e
 [<ffffffff81224df5>] ? cfq_exit_single_io_context+0x0/0x5e
 [<ffffffff81224e23>] cfq_exit_single_io_context+0x2e/0x5e
 [<ffffffff81224df5>] ? cfq_exit_single_io_context+0x0/0x5e
 [<ffffffff8122548e>] call_for_each_cic+0x37/0x5d
 [<ffffffff812254c9>] cfq_exit_io_context+0x15/0x17
 [<ffffffff8121c374>] exit_io_context+0x80/0xac
 [<ffffffff8121c33f>] ? exit_io_context+0x4b/0xac
 [<ffffffff8107c851>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffff8105464c>] do_exit+0x776/0x7aa
 [<ffffffff814832aa>] ? _raw_spin_unlock_irqrestore+0x40/0x56
 [<ffffffff8148450f>] oops_end+0xbf/0xc7
 [<ffffffff8100d4d1>] die+0x5a/0x63
 [<ffffffff81483f28>] do_trap+0x121/0x130
 [<ffffffff8100b636>] do_invalid_op+0x94/0x9d
 [<ffffffffa000e251>] ? do_virtblk_request+0x5c/0x26c [virtio_blk]
 [<ffffffff812137a8>] ? elv_rb_del+0x35/0x4e
 [<ffffffff814826da>] ? trace_hardirqs_off_thunk+0x3a/0x3c
 [<ffffffff81483600>] ? irq_return+0x0/0x10
 [<ffffffff8100a95b>] invalid_op+0x1b/0x20
 [<ffffffffa000e251>] ? do_virtblk_request+0x5c/0x26c [virtio_blk]
 [<ffffffffa000e436>] ? do_virtblk_request+0x241/0x26c [virtio_blk]
 [<ffffffff810dbca6>] ? sync_page+0x0/0x55
 [<ffffffff8121878a>] __generic_unplug_device+0x35/0x3a
 [<ffffffff81218a3b>] generic_unplug_device+0x2e/0x3e
 [<ffffffff81216b03>] blk_unplug+0x29/0x2d
 [<ffffffff81216b19>] blk_backing_dev_unplug+0x12/0x14
 [<ffffffff81142389>] block_sync_page+0x38/0x3c
 [<ffffffff810dbcf2>] sync_page+0x4c/0x55
 [<ffffffff81480fc0>] __wait_on_bit_lock+0x46/0x8f
 [<ffffffff810dbc8d>] __lock_page+0x66/0x6d
 [<ffffffff8106add7>] ? wake_bit_function+0x0/0x33
 [<ffffffff810dc99a>] lock_page+0x3c/0x41
 [<ffffffff810dcbf2>] do_read_cache_page+0xc3/0x126
 [<ffffffff811482c7>] ? blkdev_readpage+0x0/0x1a
 [<ffffffff810dcc99>] read_cache_page_async+0x1c/0x1e
 [<ffffffff810dcca9>] read_cache_page+0xe/0x18
 [<ffffffff81175927>] read_dev_sector+0x33/0x96
 [<ffffffff81177dc4>] read_lba+0x7e/0xdf
 [<ffffffff8107c851>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffff81178270>] find_valid_gpt+0xcc/0x4cd
 [<ffffffff8107ad87>] ? trace_hardirqs_off+0xd/0xf
 [<ffffffff814832aa>] ? _raw_spin_unlock_irqrestore+0x40/0x56
 [<ffffffff811786eb>] efi_partition+0x7a/0x2e7
 [<ffffffff81480281>] ? printk+0x41/0x48
 [<ffffffff81176433>] rescan_partitions+0x184/0x3a7
 [<ffffffff81148a46>] __blkdev_get+0x2b2/0x3a8
 [<ffffffff8122b73b>] ? kobject_put+0x47/0x4b
 [<ffffffff81148b4c>] blkdev_get+0x10/0x12
 [<ffffffff81175ad2>] register_disk+0xdc/0x13f
 [<ffffffff8121f23b>] add_disk+0xaf/0x10b
 [<ffffffffa000ea84>] virtblk_probe+0x44f/0x48f [virtio_blk]
 [<ffffffff8117b079>] ? sysfs_do_create_link+0xe7/0x13c
 [<ffffffffa000e461>] ? blk_done+0x0/0xce [virtio_blk]
 [<ffffffffa00072df>] virtio_dev_probe+0xb7/0xdb [virtio]
 [<ffffffff812f11a7>] driver_probe_device+0xed/0x21a
 [<ffffffff812f138f>] __device_attach+0x3a/0x3f
 [<ffffffff812f1355>] ? __device_attach+0x0/0x3f
 [<ffffffff812f0283>] bus_for_each_drv+0x59/0x90
 [<ffffffff812f142f>] device_attach+0x6c/0x90
 [<ffffffff812f0097>] bus_probe_device+0x27/0x3e
 [<ffffffff812ee6b9>] device_add+0x3c2/0x59e
 [<ffffffff812ee8b3>] device_register+0x1e/0x22
 [<ffffffffa00073ec>] register_virtio_device+0x7b/0x99 [virtio]
 [<ffffffff81244f51>] ? pci_set_master+0x23/0x27
 [<ffffffffa00ace23>] virtio_pci_probe+0x161/0x1a5 [virtio_pci]
 [<ffffffff81246079>] local_pci_probe+0x17/0x1b
 [<ffffffff81247001>] pci_device_probe+0xcd/0xfd
 [<ffffffff812f0fcf>] ? driver_sysfs_add+0x4c/0x71
 [<ffffffff812f11a7>] driver_probe_device+0xed/0x21a
 [<ffffffff812f1331>] __driver_attach+0x5d/0x81
 [<ffffffff812f12d4>] ? __driver_attach+0x0/0x81
 [<ffffffff812f0573>] bus_for_each_dev+0x59/0x8e
 [<ffffffff812f0f2e>] driver_attach+0x1e/0x20
 [<ffffffff812f0b4f>] bus_add_driver+0xfa/0x263
 [<ffffffff812f1638>] driver_register+0x9e/0x10f
 [<ffffffff81247247>] __pci_register_driver+0x68/0xd8
 [<ffffffff812eea77>] ? __root_device_register+0x8a/0xa7
 [<ffffffffa00b0000>] ? virtio_pci_init+0x0/0x60 [virtio_pci]
 [<ffffffffa00b0048>] virtio_pci_init+0x48/0x60 [virtio_pci]
 [<ffffffff8100207d>] do_one_initcall+0x72/0x18a
 [<ffffffff8108a9ba>] sys_init_module+0xd8/0x23a
 [<ffffffff81009c72>] system_call_fastpath+0x16/0x1b
Pid: 113, comm: insmod Tainted: G      D    2.6.34-11.fc14.x86_64 #1
Call Trace:
 <NMI>  [<ffffffff810114fd>] ? show_regs+0x2b/0x30
 [<ffffffff81484cc1>] nmi_watchdog_tick+0xc2/0x1a5
 [<ffffffff814841a2>] do_nmi+0xc8/0x297
 [<ffffffff81483b90>] nmi+0x20/0x39
 [<ffffffff8107ad87>] ? trace_hardirqs_off+0xd/0xf
 [<ffffffff81025154>] ? _flat_send_IPI_mask+0x79/0xab
 <<EOE>>  [<ffffffff810251ec>] flat_send_IPI_all+0x22/0x5c
 [<ffffffff81021bbc>] arch_trigger_all_cpu_backtrace+0x48/0x75
 [<ffffffff81236e50>] do_raw_spin_lock+0x117/0x142
 [<ffffffff812250f3>] ? rcu_read_lock+0x0/0x35
 [<ffffffff81482ac7>] _raw_spin_lock_irqsave+0x6e/0x88
 [<ffffffff81224e23>] ? cfq_exit_single_io_context+0x2e/0x5e
 [<ffffffff81224df5>] ? cfq_exit_single_io_context+0x0/0x5e
 [<ffffffff81224e23>] cfq_exit_single_io_context+0x2e/0x5e
 [<ffffffff81224df5>] ? cfq_exit_single_io_context+0x0/0x5e
 [<ffffffff8122548e>] call_for_each_cic+0x37/0x5d
 [<ffffffff812254c9>] cfq_exit_io_context+0x15/0x17
 [<ffffffff8121c374>] exit_io_context+0x80/0xac
 [<ffffffff8121c33f>] ? exit_io_context+0x4b/0xac
 [<ffffffff8107c851>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffff8105464c>] do_exit+0x776/0x7aa
 [<ffffffff814832aa>] ? _raw_spin_unlock_irqrestore+0x40/0x56
 [<ffffffff8148450f>] oops_end+0xbf/0xc7
 [<ffffffff8100d4d1>] die+0x5a/0x63
 [<ffffffff81483f28>] do_trap+0x121/0x130
 [<ffffffff8100b636>] do_invalid_op+0x94/0x9d
 [<ffffffffa000e251>] ? do_virtblk_request+0x5c/0x26c [virtio_blk]
 [<ffffffff812137a8>] ? elv_rb_del+0x35/0x4e
 [<ffffffff814826da>] ? trace_hardirqs_off_thunk+0x3a/0x3c
 [<ffffffff81483600>] ? irq_return+0x0/0x10
 [<ffffffff8100a95b>] invalid_op+0x1b/0x20
 [<ffffffffa000e251>] ? do_virtblk_request+0x5c/0x26c [virtio_blk]
 [<ffffffffa000e436>] ? do_virtblk_request+0x241/0x26c [virtio_blk]
 [<ffffffff810dbca6>] ? sync_page+0x0/0x55
 [<ffffffff8121878a>] __generic_unplug_device+0x35/0x3a
 [<ffffffff81218a3b>] generic_unplug_device+0x2e/0x3e
 [<ffffffff81216b03>] blk_unplug+0x29/0x2d
 [<ffffffff81216b19>] blk_backing_dev_unplug+0x12/0x14
 [<ffffffff81142389>] block_sync_page+0x38/0x3c
 [<ffffffff810dbcf2>] sync_page+0x4c/0x55
 [<ffffffff81480fc0>] __wait_on_bit_lock+0x46/0x8f
 [<ffffffff810dbc8d>] __lock_page+0x66/0x6d
 [<ffffffff8106add7>] ? wake_bit_function+0x0/0x33
 [<ffffffff810dc99a>] lock_page+0x3c/0x41
 [<ffffffff810dcbf2>] do_read_cache_page+0xc3/0x126
 [<ffffffff811482c7>] ? blkdev_readpage+0x0/0x1a
 [<ffffffff810dcc99>] read_cache_page_async+0x1c/0x1e
 [<ffffffff810dcca9>] read_cache_page+0xe/0x18
 [<ffffffff81175927>] read_dev_sector+0x33/0x96
 [<ffffffff81177dc4>] read_lba+0x7e/0xdf
 [<ffffffff8107c851>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffff81178270>] find_valid_gpt+0xcc/0x4cd
 [<ffffffff8107ad87>] ? trace_hardirqs_off+0xd/0xf
 [<ffffffff814832aa>] ? _raw_spin_unlock_irqrestore+0x40/0x56
 [<ffffffff811786eb>] efi_partition+0x7a/0x2e7
 [<ffffffff81480281>] ? printk+0x41/0x48
 [<ffffffff81176433>] rescan_partitions+0x184/0x3a7
 [<ffffffff81148a46>] __blkdev_get+0x2b2/0x3a8
 [<ffffffff8122b73b>] ? kobject_put+0x47/0x4b
 [<ffffffff81148b4c>] blkdev_get+0x10/0x12
 [<ffffffff81175ad2>] register_disk+0xdc/0x13f
 [<ffffffff8121f23b>] add_disk+0xaf/0x10b
 [<ffffffffa000ea84>] virtblk_probe+0x44f/0x48f [virtio_blk]
 [<ffffffff8117b079>] ? sysfs_do_create_link+0xe7/0x13c
 [<ffffffffa000e461>] ? blk_done+0x0/0xce [virtio_blk]
 [<ffffffffa00072df>] virtio_dev_probe+0xb7/0xdb [virtio]
 [<ffffffff812f11a7>] driver_probe_device+0xed/0x21a
 [<ffffffff812f138f>] __device_attach+0x3a/0x3f
 [<ffffffff812f1355>] ? __device_attach+0x0/0x3f
 [<ffffffff812f0283>] bus_for_each_drv+0x59/0x90
 [<ffffffff812f142f>] device_attach+0x6c/0x90
 [<ffffffff812f0097>] bus_probe_device+0x27/0x3e
 [<ffffffff812ee6b9>] device_add+0x3c2/0x59e
 [<ffffffff812ee8b3>] device_register+0x1e/0x22
 [<ffffffffa00073ec>] register_virtio_device+0x7b/0x99 [virtio]
 [<ffffffff81244f51>] ? pci_set_master+0x23/0x27
 [<ffffffffa00ace23>] virtio_pci_probe+0x161/0x1a5 [virtio_pci]
 [<ffffffff81246079>] local_pci_probe+0x17/0x1b
 [<ffffffff81247001>] pci_device_probe+0xcd/0xfd
 [<ffffffff812f0fcf>] ? driver_sysfs_add+0x4c/0x71
 [<ffffffff812f11a7>] driver_probe_device+0xed/0x21a
 [<ffffffff812f1331>] __driver_attach+0x5d/0x81
 [<ffffffff812f12d4>] ? __driver_attach+0x0/0x81
 [<ffffffff812f0573>] bus_for_each_dev+0x59/0x8e
 [<ffffffff812f0f2e>] driver_attach+0x1e/0x20
 [<ffffffff812f0b4f>] bus_add_driver+0xfa/0x263
 [<ffffffff812f1638>] driver_register+0x9e/0x10f
 [<ffffffff81247247>] __pci_register_driver+0x68/0xd8
 [<ffffffff812eea77>] ? __root_device_register+0x8a/0xa7
 [<ffffffffa00b0000>] ? virtio_pci_init+0x0/0x60 [virtio_pci]
 [<ffffffffa00b0048>] virtio_pci_init+0x48/0x60 [virtio_pci]
 [<ffffffff8100207d>] do_one_initcall+0x72/0x18a
 [<ffffffff8108a9ba>] sys_init_module+0xd8/0x23a
 [<ffffffff81009c72>] system_call_fastpath+0x16/0x1b

Looks like RHEL6 has a similar problem - bug 589397.

Version-Release number of selected component (if applicable):
guest:
kernel-2.6.34-11.fc14.x86_64

host:
qemu-kvm-0.12.1.2-2.68.el6.x86_64
kernel-2.6.32-19.el6.x86_64
libvirt-0.8.1-7.el6.x86_64

How reproducible:
always
Comment 1 Kevin Fenzi 2010-07-19 00:13:16 UTC 
Reassigning over to fedora-virt-maint for more input/debugging.
Comment 2 Qian Cai 2010-07-19 02:32:37 UTC 
This was posted upstream,
https://patchwork.kernel.org/patch/105410/
Comment 3 Bug Zapper 2010-07-30 11:45:17 UTC 
This bug appears to have been reported against 'rawhide' during the Fedora 14 development cycle.
Changing version to '14'.

More information and reason for this action is here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping