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    SubjectOops with 2.4.23
    Hello,

    I am using 2.4.23 kernel with no patchset. It was the first time i
    install a linux distribution on this PC, so i can't tell you if it have
    this Oops with an another version of the kernel. It looks to work fine
    during 1 or 2 days until i have an weird Oops. I have rebooted the machine
    after this but it appears again few days later and despite some reboot.

    I haven't include the support for module loadable. I am using Debian
    GNU/Linux Woody up to date.

    Thanks for you help.
    Arnaud Fontaine

    -------------- ksymoops
    <1>Unable to handle kernel NULL pointer dereference at virtual address
    00000000
    c0138ff2
    *pde = 00000000
    Oops: 0000
    CPU: 0
    EIP: 0010:[vfs_follow_link+26/332] Not tainted
    EFLAGS: 00010217
    eax: 00000000 ebx: caaf5f8c ecx: cba98288 edx: caaf5f8c
    esi: 00000000 edi: 00000000 ebp: cbafc0e0 esp: caaf5ee4
    ds: 0018 es: 0018 ss: 0018
    Process ps (pid: 800, stackpage=caaf5000)
    Stack: caa3dc40 caaf4000 caaf5f8c cbafc0e0 c014add7 caaf5f8c 00000000
    c0136dea
    caa3dc40 caaf5f8c cbafc0e0 caaf5f8c cb57d000 00000000 00000001
    00000001
    00000001 cb57d00d caa3dc40 cb57d006 00000007 08733bbe c0136f56
    c01370c7
    Call Trace: [proc_follow_link+27/32] [link_path_walk+1794/2132]
    [path_walk+26/28] [path_lookup+27/36] [open_namei+101/1244]
    Code: 80 3e 2f 0f 85 a5 00 00 00 53 e8 b7 d4 ff ff ba 00 e0 ff ff


    >>ebx; caaf5f8c <END_OF_CODE+a840894/????>
    >>ecx; cba98288 <END_OF_CODE+b7e2b90/????>
    >>edx; caaf5f8c <END_OF_CODE+a840894/????>
    >>ebp; cbafc0e0 <END_OF_CODE+b8469e8/????>
    >>esp; caaf5ee4 <END_OF_CODE+a8407ec/????>

    Code; 00000000 Before first symbol
    00000000 <_EIP>:
    Code; 00000000 Before first symbol
    0: 80 3e 2f cmpb $0x2f,(%esi)
    Code; 00000003 Before first symbol
    3: 0f 85 a5 00 00 00 jne ae <_EIP+0xae> 000000ae Before
    first symbol
    Code; 00000009 Before first symbol
    9: 53 push %ebx
    Code; 0000000a Before first symbol
    a: e8 b7 d4 ff ff call ffffd4c6 <_EIP+0xffffd4c6>
    ffffd4c6 <END_OF_CODE+3fd47dce/????>
    Code; 0000000f Before first symbol
    f: ba 00 e0 ff ff mov $0xffffe000,%edx

    --------------

    # lspci -vvv
    00:00.0 Host bridge: Acer Laboratories Inc. [ALi] M1541 (rev 04)
    Subsystem: Acer Laboratories Inc. [ALi] ALI M1541 Aladdin V/V+
    AGP System Controller
    Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
    ParErr- Stepping- SERR- FastB2B-
    Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort-
    <TAbort- <MAbort+ >SERR- <PERR-
    Latency: 64
    Region 0: Memory at e6000000 (32-bit, non-prefetchable)
    [size=16M]
    Capabilities: [b0] AGP version 1.0
    Status: RQ=28 SBA+ 64bit- FW- Rate=x1,x2
    Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>
    Capabilities: [e0] #00 [0000]

    00:01.0 PCI bridge: Acer Laboratories Inc. [ALi] M5243 (rev 04) (prog-if
    00 [Normal decode])
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
    ParErr- Stepping- SERR- FastB2B-
    Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort-
    <TAbort- <MAbort- >SERR- <PERR-
    Latency: 64
    Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
    I/O behind bridge: 0000e000-0000dfff
    Memory behind bridge: e6000000-e5ffffff
    Prefetchable memory behind bridge: e8000000-e7ffffff
    BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-

    00:02.0 USB Controller: Acer Laboratories Inc. [ALi] M5237 USB (rev 03)
    (prog-if 10 [OHCI])
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop-
    ParErr- Stepping- SERR- FastB2B-
    Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
    <TAbort- <MAbort- >SERR- <PERR-
    Latency: 0 (20000ns max)
    Interrupt: pin A routed to IRQ 5
    Region 0: Memory at e5800000 (32-bit, non-prefetchable)
    [size=4K]

    00:03.0 Bridge: Acer Laboratories Inc. [ALi] M7101 PMU
    Subsystem: Acer Laboratories Inc. [ALi] ALI M7101 Power
    Management Controller
    Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop-
    ParErr- Stepping- SERR- FastB2B-
    Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
    <TAbort- <MAbort- >SERR- <PERR-

    00:07.0 ISA bridge: Acer Laboratories Inc. [ALi] M1533 PCI to ISA Bridge
    [Aladdin IV] (rev c3)
    Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop-
    ParErr- Stepping- SERR- FastB2B-
    Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
    <TAbort+ <MAbort+ >SERR- <PERR-
    Latency: 0

    00:0b.0 VGA compatible controller: Trident Microsystems TGUI 9440 (rev
    e3) (prog-if 00 [VGA])
    Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop+
    ParErr- Stepping- SERR- FastB2B-
    Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
    <TAbort- <MAbort- >SERR- <PERR-
    Interrupt: pin A routed to IRQ 12
    Region 0: Memory at e5000000 (32-bit, non-prefetchable)
    [size=2M]
    Region 1: Memory at e4800000 (32-bit, non-prefetchable)
    [size=64K]
    Expansion ROM at 000c0000 [disabled] [size=64K]

    00:0f.0 IDE interface: Acer Laboratories Inc. [ALi] M5229 IDE (rev c1)
    (prog-if fa)
    Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop-
    ParErr- Stepping- SERR- FastB2B-
    Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
    <TAbort- <MAbort- >SERR- <PERR-
    Latency: 32 (500ns min, 1000ns max)
    Interrupt: pin A routed to IRQ 0
    Region 4: I/O ports at d800 [size=16]

    -------------- dmesg

    BIOS-provided physical RAM map:
    BIOS-e820: 0000000000000000 - 00000000000a0000 (usable)
    BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
    BIOS-e820: 0000000000100000 - 0000000000f00000 (usable)
    BIOS-e820: 0000000000f00000 - 0000000001000000 (reserved)
    BIOS-e820: 0000000001000000 - 000000000bffc000 (usable)
    BIOS-e820: 000000000bffc000 - 000000000bfff000 (ACPI data)
    BIOS-e820: 000000000bfff000 - 000000000c000000 (ACPI NVS)
    BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
    191MB LOWMEM available.
    On node 0 totalpages: 49148
    zone(0): 4096 pages.
    zone(1): 45052 pages.
    zone(2): 0 pages.
    Kernel command line: BOOT_IMAGE=2.4.23 ro root=305 ether=0,0,eth0
    ether=0,0,eth1
    Initializing CPU#0
    Detected 200.457 MHz processor.
    Console: colour VGA+ 80x25
    Calibrating delay loop... 399.76 BogoMIPS
    Memory: 191092k/196592k available (1049k kernel code, 4092k reserved,
    246k data, 260k init, 0k highmem)
    Checking if this processor honours the WP bit even in supervisor mode...
    Ok.
    Dentry cache hash table entries: 32768 (order: 6, 262144 bytes)
    Inode cache hash table entries: 16384 (order: 5, 131072 bytes)
    Mount cache hash table entries: 512 (order: 0, 4096 bytes)
    Buffer cache hash table entries: 8192 (order: 3, 32768 bytes)
    Page-cache hash table entries: 65536 (order: 6, 262144 bytes)
    CPU: After generic, caps: 0080a135 00000000 00000000 00000004
    CPU: Common caps: 0080a135 00000000 00000000 00000004
    CPU: Cyrix 6x86MX 3x Core/Bus Clock stepping 06
    Checking 'hlt' instruction... OK.
    POSIX conformance testing by UNIFIX
    mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au)
    mtrr: detected mtrr type: Cyrix ARR
    PCI: PCI BIOS revision 2.10 entry at 0xf0560, last bus=1
    PCI: Using configuration type 1
    PCI: Probing PCI hardware
    PCI: Probing PCI hardware (bus 00)
    PCI: Using IRQ router ALI [10b9/1533] at 00:07.0
    isapnp: Scanning for PnP cards...
    isapnp: Card '3Com 3C509B EtherLink III'
    isapnp: Card '3Com 3C509B EtherLink III'
    isapnp: 2 Plug & Play cards detected total
    Linux NET4.0 for Linux 2.4
    Based upon Swansea University Computer Society NET3.039
    Initializing RT netlink socket
    Starting kswapd
    Journalled Block Device driver loaded
    parport0: PC-style at 0x378 (0x778) [PCSPP(,...)]
    parport0: irq 7 detected
    Detected PS/2 Mouse Port.
    pty: 256 Unix98 ptys configured
    Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ
    SERIAL_PCI ISAPNP enabled
    ttyS00 at 0x03f8 (irq = 4) is a 16550A
    ttyS01 at 0x02f8 (irq = 3) is a 16550A
    lp0: using parport0 (polling).
    lp0: console ready
    FDC 0 is a post-1991 82077
    eth0: 3c5x9 at 0x220, 10baseT port, address 00 60 97 7e 7e 0b, IRQ 10.
    3c509.c:1.19 16Oct2002 becker@scyld.com
    http://www.scyld.com/network/3c509.html
    eth1: 3c5x9 at 0x230, 10baseT port, address 00 60 97 7e 92 55, IRQ 11.
    3c509.c:1.19 16Oct2002 becker@scyld.com
    http://www.scyld.com/network/3c509.html
    PPP generic driver version 2.4.2
    PPP Deflate Compression module registered
    PPP BSD Compression module registered
    Uniform Multi-Platform E-IDE driver Revision: 7.00beta4-2.4
    ide: Assuming 33MHz system bus speed for PIO modes; override with
    idebus=xx
    ALI15X3: IDE controller at PCI slot 00:0f.0
    ALI15X3: chipset revision 193
    ALI15X3: not 100%% native mode: will probe irqs later
    ide0: BM-DMA at 0xd800-0xd807, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0xd808-0xd80f, BIOS settings: hdc:pio, hdd:pio
    hda: ST320413A, ATA DISK drive
    ide: Assuming 33MHz system bus speed for PIO modes; override with
    idebus=xx
    ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
    hda: attached ide-disk driver.
    hda: host protected area => 1
    hda: 39102336 sectors (20020 MB) w/512KiB Cache, CHS=38792/16/63
    Partition check:
    hda: hda1 hda3 < hda5 hda6 hda7 hda8 hda9 hda10 hda11 hda12 >
    NET4: Linux TCP/IP 1.0 for NET4.0
    IP Protocols: ICMP, UDP, TCP
    IP: routing cache hash table of 1024 buckets, 8Kbytes
    TCP: Hash tables configured (established 16384 bind 16384)
    ip_conntrack version 2.1 (1535 buckets, 12280 max) - 292 bytes per
    conntrack
    ip_tables: (C) 2000-2002 Netfilter core team
    ipt_recent v0.3.1: Stephen Frost <sfrost@snowman.net>.
    http://snowman.net/projects/ipt_recent/
    NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.

    --------------

    # cat /proc/ioports
    0000-001f : dma1
    0020-003f : pic1
    0040-005f : timer
    0060-006f : keyboard
    0080-008f : dma page reg
    00a0-00bf : pic2
    00c0-00df : dma2
    00f0-00ff : fpu
    01f0-01f7 : ide0
    0213-0213 : isapnp read
    0220-022f : 3c509 PnP
    0230-023f : 3c509 PnP
    02f8-02ff : serial(set)
    0378-037a : parport0
    03c0-03df : vga+
    03f6-03f6 : ide0
    03f8-03ff : serial(set)
    0a79-0a79 : isapnp write
    0cf8-0cff : PCI conf1
    5c20-5c3f : ALi Corporation M7101 PMU
    d800-d80f : ALi Corporation M5229 IDE
    d800-d807 : ide0
    d808-d80f : ide1

    --------------

    # cat /proc/cpuinfo
    processor : 0
    vendor_id : CyrixInstead
    cpu family : 6
    model : 2
    model name : 6x86MX 3x Core/Bus Clock
    stepping : 6
    cpu MHz : 200.458
    fdiv_bug : no
    hlt_bug : no
    f00f_bug : no
    coma_bug : yes
    fpu : yes
    fpu_exception : yes
    cpuid level : 1
    wp : yes
    flags : fpu de tsc msr cx8 pge cmov mmx cyrix_arr ds_cpl est
    cid
    bogomips : 399.76

    --------------

    # cat /proc/iomem
    00000000-0009ffff : System RAM
    000a0000-000bffff : Video RAM area
    000c0000-000c7fff : Video ROM
    000f0000-000fffff : System ROM
    00100000-00efffff : System RAM
    00100000-002066c9 : Kernel code
    002066ca-002440c7 : Kernel data
    00f00000-00ffffff : reserved
    01000000-0bffbfff : System RAM
    0bffc000-0bffefff : ACPI Tables
    0bfff000-0bffffff : ACPI Non-volatile Storage
    e4800000-e480ffff : Trident Microsystems TGUI 9440
    e5000000-e51fffff : Trident Microsystems TGUI 9440
    e5800000-e5800fff : ALi Corporation USB 1.1 Controller
    e6000000-e6ffffff : ALi Corporation M1541
    ffff0000-ffffffff : reserved

    --------------

    --
    Arnaud Fontaine <arnaud@andesi.org> - http://www.andesi.org/
    GnuPG Public Key available on pgp.mit.edu
    Fingerprint: D792 B8A5 A567 B001 C342 2613 BDF2 A220 5E36 19D3

    --
    Future looks spotty. You will spill soup in late evening.
    [unhandled content-type:application/pgp-signature]
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