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    Subjectproblem regarding KGDB on FC3
    hi ,
    I have applied a KGDB patch on FC3 for kernel

    2.6.10 .
    My connection is successful with command
    target remote /dev/ttyS0

    After pressing C for continuing i got some messages on
    console ,after that my target m/c did not start
    error messages are like this .
    --------------------------------------------

    (gdb) target remote /dev/ttyS0
    Remote debugging using /dev/ttyS0
    breakpoint () at kernel/kgdb.c:1446
    1446 atomic_set(&kgdb_setting_breakpoint,
    0);
    (gdb) c
    Continuing.
    Linux version 2.6.10 (root@localhost.localdomain) (gcc
    version 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)) #7 Wed
    Oct 5 11:37:32 IST 2005
    BIOS-provided physical RAM map:
    BIOS-e820: 0000000000000000 - 000000000009fc00
    (usable)
    BIOS-e820: 000000000009fc00 - 00000000000a0000
    (reserved)
    BIOS-e820: 00000000000f0000 - 0000000000100000
    (reserved)
    BIOS-e820: 0000000000100000 - 000000000f7f0000
    (usable)
    BIOS-e820: 000000000f7f0000 - 000000000f7f3000 (ACPI
    NVS)
    BIOS-e820: 000000000f7f3000 - 000000000f800000 (ACPI
    data)
    BIOS-e820: 000000000f800000 - 0000000010000000
    (reserved)
    BIOS-e820: 00000000fec00000 - 0000000100000000
    (reserved)
    Waiting for connection from remote gdb...
    0MB HIGHMEM available.
    247MB LOWMEM available.
    DMI 2.3 present.
    ACPI: PM-Timer IO Port: 0x4008
    Built 1 zonelists
    Kernel command line: ro root=/dev/hda6 rootfstype=ext3
    kgdbwait kgdb8250=1,57600
    Initializing CPU#0
    PID hash table entries: 1024 (order: 10, 16384 bytes)
    Detected 2412.550 MHz processor.
    Using pmtmr for high-res timesource
    Console: colour VGA+ 80x25
    Dentry cache hash table entries: 32768 (order: 5,
    131072 bytes)
    Inode-cache hash table entries: 16384 (order: 4, 65536
    bytes)
    Memory: 247512k/253888k available (2441k kernel code,
    5816k reserved, 623k data, 184k init, 0k highmem)
    Checking if this processor honours the WP bit even in
    supervisor mode... Ok.
    Security Framework v1.0.0 initialized
    Capability LSM initialized
    Mount-cache hash table entries: 512 (order: 0, 4096
    bytes)
    CPU: Trace cache: 12K uops, L1 D cache: 8K
    CPU: L2 cache: 512K
    Intel machine check architecture supported.
    Intel machine check reporting enabled on CPU#0.
    CPU0: Intel P4/Xeon Extended MCE MSRs (12) available
    CPU: Intel(R) Pentium(R) 4 CPU 2.40GHz stepping 07
    Enabling fast FPU save and restore... done.
    Enabling unmasked SIMD FPU exception support... done.
    Checking 'hlt' instruction... OK.
    ACPI: setting ELCR to 0200 (from 0a20)
    NET: Registered protocol family 16
    PCI: PCI BIOS revision 2.10 entry at 0xf9d80, last
    bus=1
    PCI: Using configuration type 1
    mtrr: v2.0 (20020519)
    ACPI: Subsystem revision 20041105
    ACPI: Interpreter enabled
    ACPI: Using PIC for interrupt routing
    ACPI: PCI Root Bridge [PCI0] (00:00)
    PCI: Probing PCI hardware (bus 00)
    PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1
    PCI: Transparent bridge - 0000:00:1e.0
    ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 *5 6 7 9 10
    11 12 14 15)
    ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 *9 10
    11 12 14 15)
    ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 *5 6 7 9 10
    11 12 14 15)
    ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 *9 10
    11 12 14 15)
    ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 10
    11 12 14 15) *0, disabled.
    ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 10
    *11 12 14 15)
    ACPI: PCI Interrupt Link [LNK0] (IRQs 3 4 5 6 7 9 10
    11 12 14 15) *0, disabled.
    ACPI: PCI Interrupt Link [LNK1] (IRQs 3 4 5 6 7 9 10
    *11 12 14 15)
    Linux Plug and Play Support v0.97 (c) Adam Belay
    pnp: PnP ACPI init
    pnp: PnP ACPI: found 14 devices
    usbcore: registered new driver usbfs
    usbcore: registered new driver hub
    PCI: Using ACPI for IRQ routing
    ** PCI interrupts are no longer routed automatically.
    If this
    ** causes a device to stop working, it is probably
    because the
    ** driver failed to call pci_enable_device(). As a
    temporary
    ** workaround, the "pci=routeirq" argument restores
    the old
    ** behavior. If this argument makes the device work
    again,
    ** please email the output of "lspci" to
    bjorn.helgaas@hp.com
    ** so I can fix the driver.
    apm: BIOS version 1.2 Flags 0x07 (Driver version
    1.16ac)
    apm: overridden by ACPI.
    audit: initializing netlink socket (disabled)
    audit(1128469838.545:0): initialized
    Registering GDB sysrq handler
    Total HugeTLB memory allocated, 0
    VFS: Disk quotas dquot_6.5.1
    Dquot-cache hash table entries: 1024 (order 0, 4096
    bytes)
    Initializing Cryptographic API
    pci_hotplug: PCI Hot Plug PCI Core version: 0.5
    vesafb: probe of vesafb0 failed with error -6
    ACPI: Processor [CPU0] (supports 2 throttling states)
    isapnp: Scanning for PnP cards...
    isapnp: No Plug & Play device found
    Real Time Clock Driver v1.12
    Linux agpgart interface v0.100 (c) Dave Jones
    agpgart: Detected an Intel 845G Chipset.
    agpgart: Maximum main memory to use for agp memory:
    196M
    agpgart: Detected 8060K stolen memory.
    agpgart: AGP aperture is 128M @ 0xe0000000
    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 $ 48 ports,
    IRQ sharing enabled
    ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
    Couldn't register serial port UAR1: -16
    ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A





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