Re: [patch] Real-Time Preemption, -RT-2.6.12-rc2-V0.7.44-00

Rui Nuno Capela
2005-04-05T19:13:39Z

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>
> i have released the -V0.7.44-00 Real-Time Preemption patch, which can be
> downloaded from the usual place:
>
> http://redhat.com/~mingo/realtime-preempt/
>

I'm having plenty of this on boot, on my SMP/HT desktop (P4/x86), while
running RT-V0.7.44-01 (SMP+PREEMPT_RT):

BUG: kstopmachine:xxxx RT task yield()-ing!

See sample dmesg and .config on attach.

OTOH, on my laptop (P4/UP), all seems to be clear fine.

Is this something to be affraid of? :)

Cheers.
--
rncbc aka Rui Nuno Capela
rncbc@rncbc.org

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Linux version 2.6.12-rc2-RT-V0.7.44-01.0smp (root@gamma-suse1) (gcc version 3.3.4 (pre 3.3.5 20040809)) #1 SMP Tue Apr 5 19:21:11 WEST 2005
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000e8000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000003ff30000 (usable)
BIOS-e820: 000000003ff30000 - 000000003ff40000 (ACPI data)
BIOS-e820: 000000003ff40000 - 000000003fff0000 (ACPI NVS)
BIOS-e820: 000000003fff0000 - 0000000040000000 (reserved)
BIOS-e820: 00000000ffb80000 - 0000000100000000 (reserved)
127MB HIGHMEM available.
896MB LOWMEM available.
found SMP MP-table at 000ff780
On node 0 totalpages: 261936
DMA zone: 4096 pages, LIFO batch:1
Normal zone: 225280 pages, LIFO batch:16
HighMem zone: 32560 pages, LIFO batch:7
DMI 2.3 present.
ACPI: RSDP (v002 ACPIAM ) @ 0x000f9e60
ACPI: XSDT (v001 A M I OEMXSDT 0x08000320 MSFT 0x00000097) @ 0x3ff30100
ACPI: FADT (v003 A M I OEMFACP 0x08000320 MSFT 0x00000097) @ 0x3ff30290
ACPI: MADT (v001 A M I OEMAPIC 0x08000320 MSFT 0x00000097) @ 0x3ff30390
ACPI: OEMB (v001 A M I OEMBIOS 0x08000320 MSFT 0x00000097) @ 0x3ff40040
ACPI: DSDT (v001 P4P81 P4P81086 0x00000086 INTL 0x02002026) @ 0x00000000
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
Processor #0 15:2 APIC version 20
ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled)
Processor #1 15:2 APIC version 20
ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: IRQ0 used by override.
ACPI: IRQ2 used by override.
ACPI: IRQ9 used by override.
Enabling APIC mode: Flat. Using 1 I/O APICs
Using ACPI (MADT) for SMP configuration information
Allocating PCI resources starting at 40000000 (gap: 40000000:bfb80000)
Real-Time Preemption Support (c) Ingo Molnar
Built 1 zonelists
Kernel command line: root=/dev/hda2
mapped APIC to ffffd000 (fee00000)
mapped IOAPIC to ffffc000 (fec00000)
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 65536 bytes)
Detected 3360.970 MHz processor.
Using tsc for high-res timesource
Console: colour VGA+ 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 1035212k/1047744k available (1872k kernel code, 12144k reserved, 598k data, 176k init, 130240k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay loop... 6668.28 BogoMIPS (lpj=3334144)
Security Framework v1.0.0 initialized
Mount-cache hash table entries: 512
CPU: After generic identify, caps: bfebfbff 00000000 00000000 00000000 00004400 00000000 00000000
CPU: After vendor identify, caps: bfebfbff 00000000 00000000 00000000 00004400 00000000 00000000
CPU: Trace cache: 12K uops, L1 D cache: 8K
CPU: L2 cache: 512K
CPU: Physical Processor ID: 0
CPU: After all inits, caps: bfebfbff 00000000 00000000 00000080 00004400 00000000 00000000
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
CPU0: Intel(R) Pentium(R) 4 CPU 2.80GHz stepping 09
Booting processor 1/1 eip 2000
Initializing CPU#1
Calibrating delay loop... 6717.44 BogoMIPS (lpj=3358720)
CPU: After generic identify, caps: bfebfbff 00000000 00000000 00000000 00004400 00000000 00000000
CPU: After vendor identify, caps: bfebfbff 00000000 00000000 00000000 00004400 00000000 00000000
CPU: Trace cache: 12K uops, L1 D cache: 8K
CPU: L2 cache: 512K
CPU: Physical Processor ID: 0
CPU: After all inits, caps: bfebfbff 00000000 00000000 00000080 00004400 00000000 00000000
CPU1: Intel(R) Pentium(R) 4 CPU 2.80GHz stepping 09
Total of 2 processors activated (13385.72 BogoMIPS).
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 pin1=2 pin2=-1
checking TSC synchronization across 2 CPUs: passed.
spawn_desched_task(00000000)
desched cpu_callback 3/00000000
ksoftirqd started up.
softirq RT prio: 24.
desched cpu_callback 2/00000000
desched thread 0 started up.
desched cpu_callback 3/00000001
desched cpu_callback 2/00000001
ksoftirqd started up.
softirq RT prio: 24.
Brought up 2 CPUs
desched thread 1 started up.
CPU0 attaching sched-domain:
domain 0: span 3
groups: 1 2
domain 1: span 3
groups: 3
CPU1 attaching sched-domain:
domain 0: span 3
groups: 2 1
domain 1: span 3
groups: 3
NET: Registered protocol family 16
PCI: PCI BIOS revision 2.10 entry at 0xf0031, last bus=2
PCI: Using configuration type 1
mtrr: v2.0 (20020519)
ACPI: Subsystem revision 20050309
ACPI: Interpreter enabled
ACPI: Using IOAPIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (0000:00)
PCI: Probing PCI hardware (bus 00)
PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1
Boot video device is 0000:01:00.0
PCI: Transparent bridge - 0000:00:1e.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P4._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 *10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 *7 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 *5 6 7 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKD] (IRQs *3 4 5 6 7 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 *5 6 7 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 10 *11 12 14 15)
ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 *5 6 7 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 10 *11 12 14 15)
SCSI subsystem initialized
PCI: Using ACPI for IRQ routing
PCI: If a device doesn't work, try "pci=routeirq". If it helps, post a report
highmem bounce pool size: 64 pages
Real Time Clock Driver v1.12
serio: i8042 AUX port at 0x60,0x64 irq 12
serio: i8042 KBD port at 0x60,0x64 irq 1
Serial: 8250/16550 driver $Revision: 1.90 $ 8 ports, IRQ sharing disabled
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ICH5: IDE controller at PCI slot 0000:00:1f.1
PCI: Enabling device 0000:00:1f.1 (0005 -> 0007)
ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 18
ICH5: chipset revision 2
ICH5: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xfc00-0xfc07, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xfc08-0xfc0f, BIOS settings: hdc:DMA, hdd:DMA
Probing IDE interface ide0...
hda: IC35L120AVVA07-0, ATA DISK drive
hdb: IC35L120AVVA07-0, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: SONY DVD RW DRU-500A, ATAPI CD/DVD-ROM drive
hdd: HL-DT-ST RW/DVD GCC-4120B, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 128KiB
hda: 241254720 sectors (123522 MB) w/1863KiB Cache, CHS=65535/16/63, UDMA(100)
hda: cache flushes supported
hda: hda1 hda2 hda3 hda4 < hda5 hda6 hda7 hda8 hda9 hda10 hda11 >
hdb: max request size: 128KiB
hdb: 241254720 sectors (123522 MB) w/1863KiB Cache, CHS=65535/16/63, UDMA(100)
hdb: cache flushes supported
hdb: hdb1 hdb2 hdb3 hdb4 < hdb5 hdb6 hdb7 hdb8 hdb9 hdb10 hdb11 >
hdc: ATAPI 32X DVD-ROM DVD-R CD-R/RW drive, 8192kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.20
hdd: ATAPI 32X DVD-ROM CD-R/RW drive, 2048kB Cache, DMA
mice: PS/2 mouse device common for all mice
NET: Registered protocol family 2
IP: routing cache hash table of 2048 buckets, 64Kbytes
TCP established hash table entries: 65536 (order: 9, 2621440 bytes)
TCP bind hash table entries: 65536 (order: 9, 2097152 bytes)
TCP: Hash tables configured (established 65536 bind 65536)
NET: Registered protocol family 1
NET: Registered protocol family 17
Starting balanced_irq
input: AT Translated Set 2 keyboard on isa0060/serio0
ReiserFS: hda2: found reiserfs format "3.6" with standard journal
logips2pp: Detected unknown logitech mouse model 0
input: ImPS/2 Logitech Wheel Mouse on isa0060/serio1
ReiserFS: hda2: using ordered data mode
ReiserFS: hda2: journal params: device hda2, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
ReiserFS: hda2: checking transaction log (hda2)
ReiserFS: hda2: Using r5 hash to sort names
VFS: Mounted root (reiserfs filesystem) readonly.
Freeing unused kernel memory: 176k freed
Adding 987956k swap on /dev/hda11. Priority:42 extents:1
Adding 963860k swap on /dev/hdb11. Priority:42 extents:1
ReiserFS: hda2: warning: noacl not supported.
ReiserFS: hda2: warning: noacl not supported.
BUG: kstopmachine:1507 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a695>] stop_machine+0xa5/0x140 (24)
[<c013a740>] do_stop+0x0/0x70 (32)
[<c013a749>] do_stop+0x9/0x70 (4)
[<c01302e5>] kthread+0xa5/0xf0 (12)
[<c0130240>] kthread+0x0/0xf0 (16)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
BUG: kstopmachine:1507 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a695>] stop_machine+0xa5/0x140 (24)
[<c013a740>] do_stop+0x0/0x70 (32)
[<c013a749>] do_stop+0x9/0x70 (4)
[<c01302e5>] kthread+0xa5/0xf0 (12)
[<c0130240>] kthread+0x0/0xf0 (16)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
BUG: kstopmachine:1508 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a575>] stopmachine+0x95/0xe0 (24)
[<c013a4e0>] stopmachine+0x0/0xe0 (4)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (12)
usbcore: registered new driver usbfs
usbcore: registered new driver hub
BUG: kstopmachine:1649 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a695>] stop_machine+0xa5/0x140 (24)
[<c013a740>] do_stop+0x0/0x70 (32)
[<c013a749>] do_stop+0x9/0x70 (4)
[<c01302e5>] kthread+0xa5/0xf0 (12)
[<c0130240>] kthread+0x0/0xf0 (16)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
BUG: kstopmachine:1649 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a695>] stop_machine+0xa5/0x140 (24)
[<c013a740>] do_stop+0x0/0x70 (32)
[<c013a749>] do_stop+0x9/0x70 (4)
[<c01302e5>] kthread+0xa5/0xf0 (12)
[<c0130240>] kthread+0x0/0xf0 (16)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
BUG: kstopmachine:1649 RT task yield()-ing!
BUG: kstopmachine:1650 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a575>] stopmachine+0x95/0xe0 (24)
[<c013a4e0>] stopmachine+0x0/0xe0 (4)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (12)
BUG: kstopmachine:1650 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a575>] stopmachine+0x95/0xe0 (24)
[<c013a4e0>] stopmachine+0x0/0xe0 (4)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (12)
BUG: kstopmachine:1650 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a575>] stopmachine+0x95/0xe0 (24)
[<c013a4e0>] stopmachine+0x0/0xe0 (4)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (12)
BUG: kstopmachine:1650 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a575>] stopmachine+0x95/0xe0 (24)
[<c013a4e0>] stopmachine+0x0/0xe0 (4)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (12)
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a695>] stop_machine+0xa5/0x140 (24)
[<c013a740>] do_stop+0x0/0x70 (32)
[<c013a749>] do_stop+0x9/0x70 (4)
[<c01302e5>] kthread+0xa5/0xf0 (12)
[<c0130240>] kthread+0x0/0xf0 (16)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
device-mapper: 4.4.0-ioctl (2005-01-12) initialised: dm-devel@redhat.com
ACPI: PCI Interrupt 0000:02:05.0[A] -> GSI 22 (level, low) -> IRQ 22
ACPI: PCI Interrupt 0000:02:05.0[A] -> GSI 22 (level, low) -> IRQ 22
eth0: 3Com Gigabit LOM (3C940)
PrefPort:A RlmtMode:Check Link State
ReiserFS: hda6: warning: noacl not supported.
ReiserFS: hda6: found reiserfs format "3.6" with standard journal
ReiserFS: hda6: using ordered data mode
printk: 307 messages suppressed.
BUG: kstopmachine:2083 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a695>] stop_machine+0xa5/0x140 (24)
[<c013a740>] do_stop+0x0/0x70 (32)
[<c013a749>] do_stop+0x9/0x70 (4)
[<c01302e5>] kthread+0xa5/0xf0 (12)
[<c0130240>] kthread+0x0/0xf0 (16)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
ACPI: PCI Interrupt 0000:00:1d.7[D] -> GSI 23 (level, low) -> IRQ 23
PCI: Setting latency timer of device 0000:00:1d.7 to 64
ehci_hcd 0000:00:1d.7: EHCI Host Controller
ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1
ehci_hcd 0000:00:1d.7: irq 23, io mem 0xfebffc00
ReiserFS: hda6: journal params: device hda6, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
ReiserFS: hda6: checking transaction log (hda6)
PCI: cache line size of 128 is not supported by device 0000:00:1d.7
ehci_hcd 0000:00:1d.7: USB 2.0 initialized, EHCI 1.00, driver 10 Dec 2004
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 6 ports detected
ReiserFS: hda6: Using r5 hash to sort names
ReiserFS: hda8: warning: noacl not supported.
USB Universal Host Controller Interface driver v2.2
ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 16 (level, low) -> IRQ 16
PCI: Setting latency timer of device 0000:00:1d.0 to 64
uhci_hcd 0000:00:1d.0: UHCI Host Controller
ReiserFS: hda8: found reiserfs format "3.6" with standard journal
uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2
uhci_hcd 0000:00:1d.0: irq 16, io base 0x0000ef00
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
ACPI: PCI Interrupt 0000:00:1d.1[B] -> GSI 19 (level, low) -> IRQ 19
PCI: Setting latency timer of device 0000:00:1d.1 to 64
uhci_hcd 0000:00:1d.1: UHCI Host Controller
uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3
uhci_hcd 0000:00:1d.1: irq 19, io base 0x0000ef20
ReiserFS: hda8: using ordered data mode
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 2 ports detected
ACPI: PCI Interrupt 0000:00:1d.2[C] -> GSI 18 (level, low) -> IRQ 18
PCI: Setting latency timer of device 0000:00:1d.2 to 64
uhci_hcd 0000:00:1d.2: UHCI Host Controller
ReiserFS: hda8: journal params: device hda8, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
ReiserFS: hda8: checking transaction log (hda8)
uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4
uhci_hcd 0000:00:1d.2: irq 18, io base 0x0000ef80
ReiserFS: hda8: Using r5 hash to sort names
usb 3-1: new low speed USB device using uhci_hcd and address 2
subfs 0.9
hub 4-0:1.0: USB hub found
hub 4-0:1.0: 2 ports detected
ohci1394: $Rev: 1250 $ Ben Collins <bcollins@debian.org>
ACPI: PCI Interrupt 0000:02:03.0[A] -> GSI 20 (level, low) -> IRQ 20
ohci1394: fw-host0: OHCI-1394 1.0 (PCI): IRQ=[20] MMIO=[feaff800-feafffff] Max Packet=[2048]
ieee1394: Host added: ID:BUS[0-00:1023] GUID[00e01800003252fa]
printk: 34 messages suppressed.
BUG: kstopmachine:3125 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a695>] stop_machine+0xa5/0x140 (24)
[<c013a740>] do_stop+0x0/0x70 (32)
[<c013a749>] do_stop+0x9/0x70 (4)
[<c01302e5>] kthread+0xa5/0xf0 (12)
[<c0130240>] kthread+0x0/0xf0 (16)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
BUG: kstopmachine:3125 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a695>] stop_machine+0xa5/0x140 (24)
[<c013a740>] do_stop+0x0/0x70 (32)
[<c013a749>] do_stop+0x9/0x70 (4)
[<c01302e5>] kthread+0xa5/0xf0 (12)
[<c0130240>] kthread+0x0/0xf0 (16)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
usbhid: probe of 3-1:1.0 failed with error -5
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.01:USB HID core driver
Realtime LSM initialized (group 17, mlock=1)
eth0: network connection up using port A
speed: 100
autonegotiation: yes
duplex mode: half
flowctrl: none
irq moderation: disabled
scatter-gather: enabled
printk: 28 messages suppressed.
BUG: kstopmachine:3768 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a695>] stop_machine+0xa5/0x140 (24)
[<c013a740>] do_stop+0x0/0x70 (32)
[<c013a749>] do_stop+0x9/0x70 (4)
[<c01302e5>] kthread+0xa5/0xf0 (12)
[<c0130240>] kthread+0x0/0xf0 (16)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
ACPI: PCI Interrupt 0000:00:1f.5[B] -> GSI 17 (level, low) -> IRQ 17
PCI: Setting latency timer of device 0000:00:1f.5 to 64
AC'97 0 analog subsections not ready
intel8x0_measure_ac97_clock: measured 49237 usecs
intel8x0: clocking to 48000
ACPI: PCI Interrupt 0000:02:0d.0[A] -> GSI 21 (level, low) -> IRQ 21
printk: 47 messages suppressed.
BUG: kstopmachine:4131 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a695>] stop_machine+0xa5/0x140 (24)
[<c013a740>] do_stop+0x0/0x70 (32)
[<c013a749>] do_stop+0x9/0x70 (4)
[<c01302e5>] kthread+0xa5/0xf0 (12)
[<c0130240>] kthread+0x0/0xf0 (16)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
ACPI: PCI Interrupt 0000:02:0a.0[A] -> GSI 22 (level, low) -> IRQ 22
usbcore: registered new driver snd-usb-usx2y
vt: argh, driver_data is NULL !
vt: argh, driver_data is NULL !
vt: argh, driver_data is NULL !
vt: argh, driver_data is NULL !
vt: argh, driver_data is NULL !
vt: argh, driver_data is NULL !
printk: 55 messages suppressed.
BUG: kstopmachine:6187 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a695>] stop_machine+0xa5/0x140 (24)
[<c013a740>] do_stop+0x0/0x70 (32)
[<c013a749>] do_stop+0x9/0x70 (4)
[<c01302e5>] kthread+0xa5/0xf0 (12)
[<c0130240>] kthread+0x0/0xf0 (16)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
BUG: kstopmachine:6187 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a695>] stop_machine+0xa5/0x140 (24)
[<c013a740>] do_stop+0x0/0x70 (32)
[<c013a749>] do_stop+0x9/0x70 (4)
[<c01302e5>] kthread+0xa5/0xf0 (12)
[<c0130240>] kthread+0x0/0xf0 (16)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
Linux agpgart interface v0.101 (c) Dave Jones
nvidia: module license 'NVIDIA' taints kernel.
ACPI: PCI Interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 16
NVRM: loading NVIDIA Linux x86 NVIDIA Kernel Module 1.0-7167 Fri Feb 25 09:08:22 PST 2005
printk: 6 messages suppressed.
BUG: kstopmachine:6653 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a695>] stop_machine+0xa5/0x140 (24)
[<c013a740>] do_stop+0x0/0x70 (32)
[<c013a749>] do_stop+0x9/0x70 (4)
[<c01302e5>] kthread+0xa5/0xf0 (12)
[<c0130240>] kthread+0x0/0xf0 (16)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
BUG: kstopmachine:6653 RT task yield()-ing!
[<c02d245d>] yield+0x5d/0x60 (8)
[<c013a695>] stop_machine+0xa5/0x140 (24)
[<c013a740>] do_stop+0x0/0x70 (32)
[<c013a749>] do_stop+0x9/0x70 (4)
[<c01302e5>] kthread+0xa5/0xf0 (12)
[<c0130240>] kthread+0x0/0xf0 (16)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
BUG: kstopmachine:6653 RT task yield()-ing!
BUG: kstopmachine:6654 RT task yield()-ing!
[<c02d245d>] [<c02d245d>] yield+0x5d/0x60 yield+0x5d/0x60 (8)
(8)
[<c013a695>] [<c013a575>] stop_machine+0xa5/0x140 (24)
stopmachine+0x95/0xe0 (24)
[<c013a4e0>] stopmachine+0x0/0xe0 (4)
[<c013a740>] [<c0100fd5>] do_stop+0x0/0x70 kernel_thread_helper+0x5/0x10 (32)
[<c013a749>] (12)
do_stop+0x9/0x70 (4)
[<c01302e5>]<3>BUG: kstopmachine:6654 RT task yield()-ing!
kthread+0xa5/0xf0 (12)
[<c02d245d>] [<c0130240>] yield+0x5d/0x60 kthread+0x0/0xf0 (16)
(8)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (16)
[<c013a575>] stopmachine+0x95/0xe0 (24)
[<c013a4e0>] stopmachine+0x0/0xe0 (4)
[<c0100fd5>] kernel_thread_helper+0x5/0x10 (12)
input: Wacom Graphire2 4x5 on usb-0000:00:1d.1-1
usbcore: registered new driver wacom
drivers/usb/input/wacom.c: v1.40:USB Wacom Graphire and Wacom Intuos tablet driver

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