LVM Oops

From: Yaroslav Klyukin (yklyukin_at_staff.theuseful.com)
Date: 10/31/04

  • Next message: jhigdon_at_linuxfools.org: "Re: in-kernel GUI project" 
    Date:	Sat, 30 Oct 2004 19:50:30 -0400
To: LVM general discussion and development <linux-lvm@redhat.com>, linux-kernel@vger.kernel.org

    Hello!

    Oops happened after several days of normal operation diring snapshot.

    Linux backup-db2 2.4.27 #1 SMP Fri Oct 22 05:22:55 EST 2004 i686 unknown
    unknown GNU/Linux

    Filesystem - reiserfs.

    Logical Volume Manager 1.0.8
    Heinz Mauelshagen, Sistina Software 17/11/2003 (IOP 10)

    Unable to handle kernel NULL pointer dereference at virtual address 00000004
    c02adbea
    *pde = 126d9001
    Oops: 0002
    CPU: 0
    EIP: 0010:[<c02adbea>] Not tainted
    Using defaults from ksymoops -t elf32-i386 -a i386
    EFLAGS: 00010202
    eax: f8c3b4b0 ebx: fb20bde8 ecx: f89edc38 edx: 00000000
    esi: 33dbdf00 edi: 00000001 ebp: 00000803 esp: c5bc3dac
    ds: 0018 es: 0018 ss: 0018
    Process kupdated (pid: 9, stackpage=c5bc3000)
    Stack: 00000038 00000803 00000000 eae59400 f4ff7800 f4ff7970 00002000
    c02aa5fa
            c5bc3e00 c5bc3df8 33dbc580 f4ff7800 f73a9000 00000400 f77db240
    eae59570
            f73a9000 33dbc580 0002cdd0 33dbdf38 33dbdf38 08030803 00003a06
    f2046d00
    Call Trace: [<c02aa5fa>] [<c02aa727>] [<c022a4be>] [<c022a59e>]
    [<c02b8d08>]
       [<c013ebdc>] [<c013ece5>] [<c0142b48>] [<c0142e41>] [<c01072b6>]
    [<c0142d50>]
       [<c0105000>] [<c01057ae>] [<c0142d50>]
    Code: 89 42 04 8b 03 89 48 04 89 01 89 59 04 89 0b 89 ca 90 8d 74

    >>EIP; c02adbea <lvm_snapshot_remap_block+aa/100> <=====

    Trace; c02aa5fa <lvm_map+36a/480>
    Trace; c02aa727 <lvm_make_request_fn+17/30>
    Trace; c022a4be <generic_make_request+be/140>
    Trace; c022a59e <submit_bh+5e/130>
    Trace; c02b8d08 <netif_receive_skb+188/1c0>
    Trace; c013ebdc <write_locked_buffers+2c/40>
    Trace; c013ece5 <write_some_buffers+f5/140>
    Trace; c0142b48 <sync_old_buffers+78/b0>
    Trace; c0142e41 <kupdate+f1/1c0>
    Trace; c01072b6 <ret_from_fork+6/20>
    Trace; c0142d50 <kupdate+0/1c0>
    Trace; c0105000 <_stext+0/0>
    Trace; c01057ae <arch_kernel_thread+2e/40>
    Trace; c0142d50 <kupdate+0/1c0>

    Code; c02adbea <lvm_snapshot_remap_block+aa/100>
    00000000 <_EIP>:
    Code; c02adbea <lvm_snapshot_remap_block+aa/100> <=====
        0: 89 42 04 mov %eax,0x4(%edx) <=====
    Code; c02adbed <lvm_snapshot_remap_block+ad/100>
        3: 8b 03 mov (%ebx),%eax
    Code; c02adbef <lvm_snapshot_remap_block+af/100>
        5: 89 48 04 mov %ecx,0x4(%eax)
    Code; c02adbf2 <lvm_snapshot_remap_block+b2/100>
        8: 89 01 mov %eax,(%ecx)
    Code; c02adbf4 <lvm_snapshot_remap_block+b4/100>
        a: 89 59 04 mov %ebx,0x4(%ecx)
    Code; c02adbf7 <lvm_snapshot_remap_block+b7/100>
        d: 89 0b mov %ecx,(%ebx)
    Code; c02adbf9 <lvm_snapshot_remap_block+b9/100>
        f: 89 ca mov %ecx,%edx
    Code; c02adbfb <lvm_snapshot_remap_block+bb/100>
       11: 90 nop
    Code; c02adbfc <lvm_snapshot_remap_block+bc/100>
       12: 8d 74 00 00 lea 0x0(%eax,%eax,1),%esi

    1 error issued. Results may not be reliable. 

    -- 
Senior Systems Administrator, NiuTech LLC.
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