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    SubjectRe: 2.4.22-pre lockups (yet another oops for rc2)
    Hello all,

    todays' oops is:

    ksymoops 2.4.8 on i686 2.4.22-rc2. Options used
    -V (default)
    -k /proc/ksyms (default)
    -l /proc/modules (default)
    -o /lib/modules/2.4.22-rc2/ (default)
    -m /boot/System.map-2.4.22-rc2 (default)

    Warning: You did not tell me where to find symbol information. I will
    assume that the log matches the kernel and modules that are running
    right now and I'll use the default options above for symbol resolution.
    If the current kernel and/or modules do not match the log, you can get
    more accurate output by telling me the kernel version and where to find
    map, modules, ksyms etc. ksymoops -h explains the options.

    kernel BUG at slab.c:1225!
    invalid operand: 0000
    CPU: 1
    EIP: 0010:[<c0137ebd>] Not tainted
    Using defaults from ksymoops -t elf32-i386 -a i386
    EFLAGS: 00010046
    eax: 00000005 ebx: 00000005 ecx: 00000088 edx: 00000000
    esi: f6df2000 edi: f6df20a0 ebp: f6df2348 esp: c345df04
    ds: 0018 es: 0018 ss: 0018
    Process kswapd (pid: 5, stackpage=c345d000)
    Stack: f6df234c f6df2348 f6df23cc f6df2000 c0139107 c342b4d0 f6df2000 f6df2348
    c342b4d0 0000007d c346040c c3460400 c01384e2 c342b4d0 f6df234c 00000000
    00000001 00000000 00000000 00000000 00000020 000001d0 00000020 00000006
    Call Trace: [<c0139107>] [<c01384e2>] [<c0139c78>] [<c0139d2e>] [<c0139e3c>]
    [<c0139ec8>] [<c0139ff8>] [<c0139f60>] [<c0105000>] [<c010592e>] [<c0139f60>]
    Code: 0f 0b c9 04 44 92 2c c0 8b 44 86 18 83 f8 ff 75 eb 89 f6 8b


    >>EIP; c0137ebd <kmem_extra_free_checks+6d/a0> <=====

    >>esi; f6df2000 <_end+36a2a9a0/38462a00>
    >>edi; f6df20a0 <_end+36a2aa40/38462a00>
    >>ebp; f6df2348 <_end+36a2ace8/38462a00>
    >>esp; c345df04 <_end+30968a4/38462a00>

    Trace; c0139107 <kmem_cache_free_one+f7/220>
    Trace; c01384e2 <kmem_cache_reap+b2/290>
    Trace; c0139c78 <shrink_caches+28/a0>
    Trace; c0139d2e <try_to_free_pages_zone+3e/60>
    Trace; c0139e3c <kswapd_balance_pgdat+4c/b0>
    Trace; c0139ec8 <kswapd_balance+28/40>
    Trace; c0139ff8 <kswapd+98/c0>
    Trace; c0139f60 <kswapd+0/c0>
    Trace; c0105000 <_stext+0/0>
    Trace; c010592e <arch_kernel_thread+2e/40>
    Trace; c0139f60 <kswapd+0/c0>

    Code; c0137ebd <kmem_extra_free_checks+6d/a0>
    00000000 <_EIP>:
    Code; c0137ebd <kmem_extra_free_checks+6d/a0> <=====
    0: 0f 0b ud2a <=====
    Code; c0137ebf <kmem_extra_free_checks+6f/a0>
    2: c9 leave
    Code; c0137ec0 <kmem_extra_free_checks+70/a0>
    3: 04 44 add $0x44,%al
    Code; c0137ec2 <kmem_extra_free_checks+72/a0>
    5: 92 xchg %eax,%edx
    Code; c0137ec3 <kmem_extra_free_checks+73/a0>
    6: 2c c0 sub $0xc0,%al
    Code; c0137ec5 <kmem_extra_free_checks+75/a0>
    8: 8b 44 86 18 mov 0x18(%esi,%eax,4),%eax
    Code; c0137ec9 <kmem_extra_free_checks+79/a0>
    c: 83 f8 ff cmp $0xffffffff,%eax
    Code; c0137ecc <kmem_extra_free_checks+7c/a0>
    f: 75 eb jne fffffffc <_EIP+0xfffffffc>
    Code; c0137ece <kmem_extra_free_checks+7e/a0>
    11: 89 f6 mov %esi,%esi
    Code; c0137ed0 <kmem_extra_free_checks+80/a0>
    13: 8b 00 mov (%eax),%eax


    1 warning issued. Results may not be reliable.


    This is still with ext3 and about 24 hours uptime (rough guess).

    Regards,
    Stephan

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