Description of problem:

kseriod has a double lock in the ps2 bits.

Version-Release number of selected component (if applicable):

2.6.17-1.2356.fc6

How reproducible:

Every time.

Steps to Reproduce:
1. Boot
2. There is no step 2.
3. Profit!
  
Linux version 2.6.17-1.2356.fc6 (brewbuilder.redhat.com) (gcc
version 4.1.1 20060629 (Red Hat 4.1.1-6)) #1 SMP Thu Jul 6 01:10:48 EDT 2006
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
 BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000d2000 - 00000000000d4000 (reserved)
 BIOS-e820: 00000000000dc000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000005ff60000 (usable)
 BIOS-e820: 000000005ff60000 - 000000005ff77000 (ACPI data)
 BIOS-e820: 000000005ff77000 - 000000005ff79000 (ACPI NVS)
 BIOS-e820: 000000005ff80000 - 0000000060000000 (reserved)
 BIOS-e820: 00000000ff800000 - 0000000100000000 (reserved)
639MB HIGHMEM available.
896MB LOWMEM available.
Using x86 segment limits to approximate NX protection
On node 0 totalpages: 393056
  DMA zone: 4096 pages, LIFO batch:0
  Normal zone: 225280 pages, LIFO batch:31
  HighMem zone: 163680 pages, LIFO batch:31
DMI present.
Using APIC driver default
ACPI: RSDP (v002 IBM                                   ) @ 0x000f6d70
ACPI: XSDT (v001 IBM    TP-1R    0x00003160  LTP 0x00000000) @ 0x5ff6a6cd
ACPI: FADT (v003 IBM    TP-1R    0x00003160 IBM  0x00000001) @ 0x5ff6a800
ACPI: SSDT (v001 IBM    TP-1R    0x00003160 MSFT 0x0100000e) @ 0x5ff6a9b4
ACPI: ECDT (v001 IBM    TP-1R    0x00003160 IBM  0x00000001) @ 0x5ff76ebc
ACPI: TCPA (v001 IBM    TP-1R    0x00003160 PTL  0x00000001) @ 0x5ff76f0e
ACPI: BOOT (v001 IBM    TP-1R    0x00003160  LTP 0x00000001) @ 0x5ff76fd8
ACPI: DSDT (v001 IBM    TP-1R    0x00003160 MSFT 0x0100000e) @ 0x00000000
ACPI: PM-Timer IO Port: 0x1008
Allocating PCI resources starting at 70000000 (gap: 60000000:9f800000)
Detected 1594.888 MHz processor.
Built 1 zonelists.  Total pages: 393056
Kernel command line: ro root=LABEL=/ single
Local APIC disabled by BIOS -- you can enable it with "lapic"
mapped APIC to ffffd000 (0239b000)
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
CPU 0 irqstacks, hard=c0809000 soft=c07e9000
PID hash table entries: 4096 (order: 12, 16384 bytes)
Console: colour VGA+ 80x25
Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
... MAX_LOCKDEP_SUBCLASSES:    8
... MAX_LOCK_DEPTH:          30
... MAX_LOCKDEP_KEYS:        2048
... CLASSHASH_SIZE:           1024
... MAX_LOCKDEP_ENTRIES:     8192
... MAX_LOCKDEP_CHAINS:      8192
... CHAINHASH_SIZE:          4096
 memory used by lock dependency info: 696 kB
 per task-struct memory footprint: 1200 bytes
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 1543296k/1572224k available (2117k kernel code, 27772k reserved, 1108k
data, 240k init, 654720k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 3192.84 BogoMIPS (lpj=6385690)
Security Framework v1.0.0 initialized
SELinux:  Initializing.
SELinux:  Starting in permissive mode
selinux_register_security:  Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 512
CPU: After generic identify, caps: a7e9f9bf 00000000 00000000 00000000 00000180
00000000 00000000
CPU: After vendor identify, caps: a7e9f9bf 00000000 00000000 00000000 00000180
00000000 00000000
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 1024K
CPU: After all inits, caps: a7e9f1bf 00000000 00000000 00000040 00000180
00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
Checking 'hlt' instruction... OK.
SMP alternatives: switching to UP code
Freeing SMP alternatives: 16k freed
ACPI: Core revision 20060623
ACPI: setting ELCR to 0200 (from 0800)
CPU0: Intel(R) Pentium(R) M processor 1600MHz stepping 05
SMP motherboard not detected.
Local APIC not detected. Using dummy APIC emulation.
Brought up 1 CPUs
checking if image is initramfs... it is
Freeing initrd memory: 927k freed
PM: Adding info for No Bus:platform
NET: Registered protocol family 16
ACPI: bus type pci registered
PCI: PCI BIOS revision 2.10 entry at 0xfd8d6, last bus=8
Setting up standard PCI resources
ACPI: Found ECDT
ACPI: Interpreter enabled
ACPI: Using PIC for interrupt routing
PM: Adding info for acpi:acpi
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 9 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Root Bridge [PCI0] (0000:00)
PCI: Probing PCI hardware (bus 00)
PM: Adding info for No Bus:pci0000:00
PCI quirk: region 1000-107f claimed by ICH4 ACPI/GPIO/TCO
PCI quirk: region 1180-11bf claimed by ICH4 GPIO
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]
PM: Adding info for pci:0000:00:00.0
PM: Adding info for pci:0000:00:01.0
PM: Adding info for pci:0000:00:1d.0
PM: Adding info for pci:0000:00:1d.1
PM: Adding info for pci:0000:00:1d.2
PM: Adding info for pci:0000:00:1d.7
PM: Adding info for pci:0000:00:1e.0
PM: Adding info for pci:0000:00:1f.0
PM: Adding info for pci:0000:00:1f.1
PM: Adding info for pci:0000:00:1f.3
PM: Adding info for pci:0000:00:1f.5
PM: Adding info for pci:0000:00:1f.6
PM: Adding info for pci:0000:01:00.0
PM: Adding info for pci:0000:02:00.0
PM: Adding info for pci:0000:02:00.1
PM: Adding info for pci:0000:02:01.0
PM: Adding info for pci:0000:02:02.0
ACPI: Embedded Controller [EC] (gpe 28) interrupt mode.
ACPI: Power Resource [PUBS] (on)
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.AGP_._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCI1._PRT]
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI init
PM: Adding info for No Bus:pnp0
PM: Adding info for pnp:00:00
PM: Adding info for pnp:00:01
PM: Adding info for pnp:00:02
PM: Adding info for pnp:00:03
PM: Adding info for pnp:00:04
PM: Adding info for pnp:00:05
PM: Adding info for pnp:00:06
PM: Adding info for pnp:00:07
PM: Adding info for pnp:00:08
PM: Adding info for pnp:00:09
PM: Adding info for pnp:00:0a
PM: Adding info for pnp:00:0b
PM: Adding info for pnp:00:0c
pnp: PnP ACPI: found 13 devices
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: Using ACPI for IRQ routing
PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post a report
PCI: Bridge: 0000:00:01.0
  IO window: 3000-3fff
  MEM window: c0100000-c01fffff
  PREFETCH window: e0000000-e7ffffff
PCI: Bus 3, cardbus bridge: 0000:02:00.0
  IO window: 00004000-000040ff
  IO window: 00004400-000044ff
  PREFETCH window: e8000000-e9ffffff
  MEM window: c2000000-c3ffffff
PCI: Bus 7, cardbus bridge: 0000:02:00.1
  IO window: 00004800-000048ff
  IO window: 00004c00-00004cff
  PREFETCH window: ea000000-ebffffff
  MEM window: c4000000-c5ffffff
PCI: Bridge: 0000:00:1e.0
  IO window: 4000-8fff
  MEM window: c0200000-cfffffff
  PREFETCH window: e8000000-efffffff
PCI: Setting latency timer of device 0000:00:1e.0 to 64
Device `[CBS0]' is not power manageableACPI: PCI Interrupt Link [LNKA] enabled
at IRQ 11
PCI: setting IRQ 11 as level-triggered
ACPI: PCI Interrupt 0000:02:00.0[A] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11
Device `[CBS1]' is not power manageableACPI: PCI Interrupt Link [LNKB] enabled
at IRQ 11
ACPI: PCI Interrupt 0000:02:00.1[B] -> Link [LNKB] -> GSI 11 (level, low) -> IRQ 11
NET: Registered protocol family 2
IP route cache hash table entries: 65536 (order: 6, 262144 bytes)
TCP established hash table entries: 131072 (order: 10, 4194304 bytes)
TCP bind hash table entries: 65536 (order: 9, 2097152 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
PM: Adding info for platform:pcspkr
Simple Boot Flag at 0x35 set to 0x1
IBM machine detected. Enabling interrupts during APM calls.
apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16ac)
apm: overridden by ACPI.
Initializing RT-Tester: OK
audit: initializing netlink socket (disabled)
audit(1152225933.772:1): initialized
highmem bounce pool size: 64 pages
Total HugeTLB memory allocated, 0
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
SELinux:  Registering netfilter hooks
Initializing Cryptographic API
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
PM: Adding info for platform:vesafb.0
ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3])
ACPI: Processor [CPU] (supports 8 throttling states)
ACPI: Thermal Zone [THM0] (51 C)
PM: Adding info for No Bus:pnp1
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
Real Time Clock Driver v1.12ac
Non-volatile memory driver v1.2
Linux agpgart interface v0.101 (c) Dave Jones
agpgart: Detected an Intel 855PM Chipset.
agpgart: AGP aperture is 256M @ 0xd0000000
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
PM: Adding info for platform:serial8250
pnp: Unable to assign resources to device 00:0a.
serial: probe of 00:0a failed with error -16
Device `[AC9M]' is not power manageable<6>ACPI: PCI Interrupt 0000:00:1f.6[B] ->
Link [LNKB] -> GSI 11 (level, low) -> IRQ 11
ACPI: PCI interrupt for device 0000:00:1f.6 disabled
PM: Adding info for No Bus:isa
RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ICH4: IDE controller at PCI slot 0000:00:1f.1
PCI: Enabling device 0000:00:1f.1 (0005 -> 0007)
ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11
ACPI: PCI Interrupt 0000:00:1f.1[A] -> Link [LNKC] -> GSI 11 (level, low) -> IRQ 11
ICH4: chipset revision 1
ICH4: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0x1860-0x1867, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0x1868-0x186f, BIOS settings: hdc:DMA, hdd:pio
Probing IDE interface ide0...
hda: HITACHI_DK23EB-40B, ATA DISK drive
PM: Adding info for No Bus:ide0
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
PM: Adding info for ide:0.0
Probing IDE interface ide1...
hdc: UJDA745 DVD/CDRW, ATAPI CD/DVD-ROM drive
PM: Adding info for No Bus:ide1
ide1 at 0x170-0x177,0x376 on irq 15
PM: Adding info for ide:1.0
hda: max request size: 128KiB
hda: Host Protected Area detected.
        current capacity is 72037362 sectors (36883 MB)
        native  capacity is 78140160 sectors (40007 MB)
hda: Host Protected Area disabled.
hda: 78140160 sectors (40007 MB) w/2048KiB Cache, CHS=65535/16/63, UDMA(100)
hda: cache flushes supported
 hda: hda1
ide-floppy driver 0.99.newide
Yenta: CardBus bridge found at 0000:02:00.0 [1014:0512]
Yenta: Using INTVAL to route CSC interrupts to PCI
Yenta: Routing CardBus interrupts to PCI
Yenta TI: socket 0000:02:00.0, mfunc 0x01d21022, devctl 0x64
Yenta: ISA IRQ mask 0x04b8, PCI irq 11
Socket status: 30000006
pcmcia: parent PCI bridge I/O window: 0x4000 - 0x8fff
cs: IO port probe 0x4000-0x8fff: clean.
pcmcia: parent PCI bridge Memory window: 0xc0200000 - 0xcfffffff
pcmcia: parent PCI bridge Memory window: 0xe8000000 - 0xefffffff
Yenta: CardBus bridge found at 0000:02:00.1 [1014:0512]
Yenta: Using INTVAL to route CSC interrupts to PCI
Yenta: Routing CardBus interrupts to PCI
Yenta TI: socket 0000:02:00.1, mfunc 0x01d21022, devctl 0x64
Yenta: ISA IRQ mask 0x04b8, PCI irq 11
Socket status: 30000006
pcmcia: parent PCI bridge I/O window: 0x4000 - 0x8fff
cs: IO port probe 0x4000-0x8fff: clean.
pcmcia: parent PCI bridge Memory window: 0xc0200000 - 0xcfffffff
pcmcia: parent PCI bridge Memory window: 0xe8000000 - 0xefffffff
usbcore: registered new driver libusual
usbcore: registered new driver hiddev
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12
PM: Adding info for platform:i8042
serio: i8042 AUX port at 0x60,0x64 irq 12
serio: i8042 KBD port at 0x60,0x64 irq 1
PM: Adding info for serio:serio0
mice: PS/2 mouse device common for all mice
md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: bitmap version 4.39
TCP bic registered
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 17
PM: Adding info for serio:serio1
Using IPI No-Shortcut mode
ACPI: (supports S0 S3 S4 S5)
Freeing unused kernel memory: 240k freed
Write protecting the kernel read-only data: 391k
Time: tsc clocksource has been installed.
Time: acpi_pm clocksource has been installed.
input: AT Translated Set 2 keyboard as /class/input/input0
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Synaptics Touchpad, model: 1, fw: 5.9, id: 0x2c6ab1, caps: 0x884793/0x0
serio: Synaptics pass-through port at isa0060/serio1/input0
input: SynPS/2 Synaptics TouchPad as /class/input/input1
PM: Adding info for serio:serio2

=============================================
[ INFO: possible recursive locking detected ]
---------------------------------------------
kseriod/111 is trying to acquire lock:
 (&ps2dev->cmd_mutex/1){--..}, at: [<c05937fd>] ps2_command+0x6a/0x2bd

but task is already holding lock:
 (&ps2dev->cmd_mutex/1){--..}, at: [<c05937fd>] ps2_command+0x6a/0x2bd

other info that might help us debug this:
4 locks held by kseriod/111:
 #0:  (serio_mutex){--..}, at: [<c060d6bb>] mutex_lock+0x21/0x24
 #1:  (&serio->drv_mutex){--..}, at: [<c060d6bb>] mutex_lock+0x21/0x24
 #2:  (psmouse_mutex){--..}, at: [<c060d6bb>] mutex_lock+0x21/0x24
 #3:  (&ps2dev->cmd_mutex/1){--..}, at: [<c05937fd>] ps2_command+0x6a/0x2bd

stack backtrace:
 [<c0405167>] show_trace_log_lvl+0x54/0xfd
 [<c040571e>] show_trace+0xd/0x10
 [<c040583d>] dump_stack+0x19/0x1b
 [<c043bdb2>] __lock_acquire+0x76a/0x98d
 [<c043c546>] lock_acquire+0x4b/0x6d
 [<c060d793>] mutex_lock_nested+0xd5/0x251
 [<c05937fd>] ps2_command+0x6a/0x2bd
 [<c0598f41>] psmouse_sliced_command+0x1c/0x5a
 [<c059c45a>] synaptics_pt_write+0x1e/0x44
 [<c05936fb>] ps2_sendbyte+0x3e/0xd6
 [<c0593879>] ps2_command+0xe6/0x2bd
 [<c0598b3e>] psmouse_probe+0x1d/0x68
 [<c0599ad0>] psmouse_connect+0xe8/0x20f
 [<c05910d9>] serio_connect_driver+0x1e/0x2e
 [<c05910ff>] serio_driver_probe+0x16/0x18
 [<c0550076>] driver_probe_device+0x45/0x92
 [<c05500cb>] __device_attach+0x8/0xa
 [<c054fa0c>] bus_for_each_drv+0x3a/0x65
 [<c0550126>] device_attach+0x59/0x6e
 [<c054f74a>] bus_attach_device+0x16/0x2b
 [<c054eb03>] device_add+0x1f4/0x307
 [<c0591b9d>] serio_thread+0xfd/0x27c
 [<c04365dc>] kthread+0xc3/0xef
 [<c0402005>] kernel_thread_helper+0x5/0xb
IBM TrackPoint firmware: 0x0e, buttons: 3/3
input: TPPS/2 IBM TrackPoint as /class/input/input2