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    SubjectRe: PATA driver patch for 2.6.17
    Alan Cox wrote:

    > This is basically a resync versus 2.6.17, the head of the PATA tree is
    > now built against Jeffs tree with revised error handling and the like.
    > Alan

    I get the following bug while booting:

    Linux version 2.6.17 (root@collins) (gcc version 3.4.6 (Gentoo 3.4.6-r1,
    ssp-3.4.5-1.0, pie-8.7.9)) #4 PREEMPT Mon Jun 19 20:29:48 IST 2006
    BIOS-provided physical RAM map:
    BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
    BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved)
    BIOS-e820: 0000000000100000 - 000000003ffda000 (usable)
    BIOS-e820: 000000003ffda000 - 0000000040000000 (reserved)
    BIOS-e820: 00000000e0000000 - 00000000f0007000 (reserved)
    BIOS-e820: 00000000f0008000 - 00000000f000c000 (reserved)
    BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
    BIOS-e820: 00000000fed20000 - 00000000fee10000 (reserved)
    BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved)
    127MB HIGHMEM available.
    896MB LOWMEM available.
    DMI 2.3 present.
    ACPI: PM-Timer IO Port: 0x1008
    ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
    Processor #0 6:13 APIC version 20
    ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] disabled)
    ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
    ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
    ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
    IOAPIC[0]: apic_id 1, 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)
    Enabling APIC mode: Flat. Using 1 I/O APICs
    Using ACPI (MADT) for SMP configuration information
    Allocating PCI resources starting at 50000000 (gap: 40000000:a0000000)
    Built 1 zonelists
    Kernel command line: root=/dev/ram0
    vga=0x317 real_root=/dev/sda3 init=/linuxrc video=vesafb:mtrr:3,ywrap
    netconsole: local port 6665
    netconsole: local IP
    netconsole: interface eth0
    netconsole: remote port 514
    netconsole: remote IP
    netconsole: remote ethernet address 00:12:3f:94:14:0e
    Enabling fast FPU save and restore... done.
    Enabling unmasked SIMD FPU exception support... done.
    Initializing CPU#0
    CPU 0 irqstacks, hard=c0576000 soft=c0575000
    PID hash table entries: 4096 (order: 12, 16384 bytes)
    Detected 1862.367 MHz processor.
    Using pmtmr for high-res timesource
    Console: colour dummy device 80x25
    Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
    Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
    Memory: 1033100k/1048424k available (2930k kernel code, 14572k reserved,
    1408k data, 200k init, 130920k highmem)
    Checking if this processor honours the WP bit even in supervisor mode... Ok.
    Calibrating delay using timer specific routine.. 3727.80 BogoMIPS
    Security Framework v1.0.0 initialized
    Capability LSM initialized
    Mount-cache hash table entries: 512
    CPU: L1 I cache: 32K, L1 D cache: 32K
    CPU: L2 cache: 2048K
    Intel machine check architecture supported.
    Intel machine check reporting enabled on CPU#0.
    CPU: Intel(R) Pentium(R) M processor 1.86GHz stepping 08
    Checking 'hlt' instruction... OK.
    SMP alternatives: switching to UP code
    Freeing SMP alternatives: 0k freed
    ..TIMER: vector=0x31 apic1=0 pin1=2 apic2=-1 pin2=-1
    checking if image is initramfs... it is
    Freeing initrd memory: 758k freed
    NET: Registered protocol family 16
    ACPI: bus type pci registered
    Setting up standard PCI resources
    ACPI: Subsystem revision 20060127
    ACPI: Interpreter enabled
    ACPI: Using IOAPIC for interrupt routing
    ACPI: PCI Root Bridge [PCI0] (0000:00)
    ACPI: Assume root bridge [\_SB_.PCI0] bus is 0
    PCI quirk: region 1000-107f claimed by ICH6 ACPI/GPIO/TCO
    PCI quirk: region 1080-10bf claimed by ICH6 GPIO
    PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.2
    PCI: Transparent bridge - 0000:00:1e.0
    PCI: Bus #04 (-#07) is hidden behind transparent bridge #03 (-#04)
    (try 'pci=assign-busses')
    Please report the result to linux-kernel to fix this permanently
    ACPI: PCI Interrupt Link [LNKA] (IRQs 9 10 *11)
    ACPI: PCI Interrupt Link [LNKB] (IRQs 5 7) *10
    ACPI: PCI Interrupt Link [LNKC] (IRQs *9 10 11)
    ACPI: PCI Interrupt Link [LNKD] (IRQs 5 *7 9 10 11)
    ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0,
    ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0,
    ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0,
    Linux Plug and Play Support v0.97 (c) Adam Belay
    pnp: PnP ACPI init
    pnp: PnP ACPI: found 11 devices
    SCSI subsystem initialized
    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
    pnp: 00:02: ioport range 0x4d0-0x4d1 has been reserved
    pnp: 00:02: ioport range 0x1000-0x1005 could not be reserved
    pnp: 00:02: ioport range 0x1008-0x100f could not be reserved
    pnp: 00:03: ioport range 0xf400-0xf4fe has been reserved
    pnp: 00:03: ioport range 0x1006-0x1007 has been reserved
    pnp: 00:03: ioport range 0x100a-0x1059 could not be reserved
    pnp: 00:03: ioport range 0x1060-0x107f has been reserved
    pnp: 00:03: ioport range 0x1080-0x10bf has been reserved
    pnp: 00:03: ioport range 0x10c0-0x10df has been reserved
    pnp: 00:08: ioport range 0x900-0x90f has been reserved
    pnp: 00:08: ioport range 0x910-0x91f has been reserved
    pnp: 00:08: ioport range 0x920-0x92f has been reserved
    pnp: 00:08: ioport range 0x930-0x93f has been reserved
    pnp: 00:08: ioport range 0x940-0x97f has been reserved
    PCI: Bridge: 0000:00:01.0
    IO window: d000-dfff
    MEM window: dfd00000-dfefffff
    PREFETCH window: d0000000-d7ffffff
    PCI: Bus 4, cardbus bridge: 0000:03:01.0
    IO window: 00002000-000020ff
    IO window: 00002400-000024ff
    PREFETCH window: 50000000-51ffffff
    MEM window: 52000000-53ffffff
    PCI: Bridge: 0000:00:1e.0
    IO window: 2000-2fff
    MEM window: dfc00000-dfcfffff
    PREFETCH window: 50000000-51ffffff
    ACPI: PCI Interrupt 0000:00:01.0[A] -> GSI 16 (level, low) -> IRQ 16
    PCI: Enabling device 0000:03:01.0 (0000 -> 0003)
    ACPI: PCI Interrupt 0000:03:01.0[A] -> GSI 19 (level, low) -> IRQ 17
    NET: Registered protocol family 2
    IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
    TCP established hash table entries: 131072 (order: 9, 2097152 bytes)
    TCP bind hash table entries: 65536 (order: 8, 1310720 bytes)
    TCP: Hash tables configured (established 131072 bind 65536)
    TCP reno registered
    Simple Boot Flag at 0x79 set to 0x1
    IA-32 Microcode Update Driver: v1.14 <>
    highmem bounce pool size: 64 pages
    NTFS driver 2.1.27 [Flags: R/W].
    fuse init (API version 7.6)
    Installing v9fs 9P2000 file system support
    Initializing Cryptographic API
    io scheduler noop registered
    io scheduler cfq registered (default)
    vesafb: framebuffer at 0xd0000000, mapped to 0xf8880000, using 3072k, total
    vesafb: mode is 1024x768x16, linelength=2048, pages=84
    vesafb: protected mode interface info at c000:5b0b
    vesafb: pmi: set display start = c00c5b79, set palette = c00c5bb3
    vesafb: pmi: ports = de10 de16 de54 de38 de3c de5c de00 de04 deb0 deb2 deb4
    vesafb: scrolling: ywrap using protected mode interface, yres_virtual=1536
    vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
    Console: switching to colour frame buffer device 128x48
    fb0: VESA VGA frame buffer device
    ACPI: AC Adapter [AC] (on-line)
    ACPI: Battery Slot [BAT0] (battery present)
    ACPI: Lid Switch [LID]
    ACPI: Power Button (CM) [PBTN]
    ACPI: Sleep Button (CM) [SBTN]
    ACPI: Video Device [VID] (multi-head: yes rom: no post: no)
    ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3] C4[C3])
    ACPI: Processor [CPU0] (supports 8 throttling states)
    ACPI: Thermal Zone [THM] (57 C)
    Real Time Clock Driver v1.12ac
    Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
    RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
    loop: loaded (max 8 devices)
    b44.c:v1.00 (Apr 7, 2006)
    ACPI: PCI Interrupt 0000:03:00.0[A] -> GSI 18 (level, low) -> IRQ 18
    eth0: Broadcom 4400 10/100BaseT Ethernet 00:12:3f:ea:a4:a6
    tun: Universal TUN/TAP device driver, 1.6
    tun: (C) 1999-2004 Max Krasnyansky <>
    netconsole: device eth0 not up yet, forcing it
    b44: eth0: Link is up at 100 Mbps, full duplex.
    b44: eth0: Flow control is off for TX and off for RX.
    netconsole: network logging started
    ACPI: PCI Interrupt 0000:00:1f.2[B] ->
    GSI 17 (level, low) -> IRQ 19
    ACPI: PCI interrupt for device 0000:00:1f.2 disabled
    ahci: probe of 0000:00:1f.2 failed with error -12
    ata_piix 0000:00:1f.2: MAP [
    ACPI: PCI Interrupt 0000:00:1f.2[B] ->
    GSI 17 (level, low) -> IRQ 19
    ata1: SATA max UDMA/133 cmd 0x1F0 ctl 0x3F6 bmdma 0xBFA0 irq 14
    BUG: unable to handle kernel NULL pointer dereference
    at virtual address 00000000
    printing eip:
    *pde = 00000000
    Oops: 0000 [#1]

    Modules linked in:

    CPU: 0
    EIP: 0060:[<00000000>] Not tainted VLI
    EFLAGS: 00010246 (2.6.17 #4)
    EIP is at rest_init+0x3feffde0/0x40
    eax: c19b635c ebx: c03ee6c0 ecx: c19afe00 edx: c19b63d4
    esi: c19b6454 edi: c10335e0 ebp: c193fef0 esp: c193fec8
    ds: 007b es: 007b ss: 0068
    Process ata/0 (pid: 310, threadinfo=c193f000 task=c193c070)




    Call Trace:











    Bad EIP value.

    EIP: [<00000000>]
    SS:ESP 0068:c193fec8

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      Last update: 2006-06-19 21:50    [W:0.037 / U:72.912 seconds]
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