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    Subjectlinux-2.4.22 Oops on ATM PCA-200EPC
    Hello

    I have always used vanilla kernel with very old patch for ATM
    (name: linux-2.3.99-pre6-fore200e-0.2f.patch) It worked well -
    trouble-free.
    I have just tried vanilla 2.4.22, here is oops. ATM doesn't work :(

    ksymoops 2.4.5 on i686 2.4.22. Options used
    -V (default)
    -k /proc/ksyms (default)
    -l /proc/modules (default)
    -o /lib/modules/2.4.22/ (default)
    -m /lib/modules/2.4.22/System.map (specified)

    Aug 26 00:47:54 voices kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000010
    Aug 26 00:47:54 voices kernel: c0263127
    Aug 26 00:47:54 voices kernel: *pde = 00000000
    Aug 26 00:47:54 voices kernel: Oops: 0002
    Aug 26 00:47:54 voices kernel: CPU: 0
    Aug 26 00:47:54 voices kernel: EIP: 0010:[<c0263127>] Not tainted
    Using defaults from ksymoops -t elf32-i386 -a i386
    Aug 26 00:47:54 voices kernel: EFLAGS: 00010286
    Aug 26 00:47:54 voices kernel: eax: 00000000 ebx: ffffffff ecx: c02c7c14 edx: ffffff9e
    Aug 26 00:47:54 voices kernel: esi: f78812b4 edi: 000061e1 ebp: f6f27800 esp: f78e5f04
    Aug 26 00:47:54 voices kernel: ds: 0018 es: 0018 ss: 0018
    Aug 26 00:47:54 voices kernel: Process atmarpd (pid: 8093, stackpage=f78e5000)
    Aug 26 00:47:54 voices kernel: Stack: f6f27800 f7b2a880 f706b680 400f7020 00000000 00000003 f6fb7a80 f7b2a89c
    Aug 26 00:47:54 voices kernel: 00000000 005d3339 f78812b4 00030002 f7a3e780 f7b7c005 00000003 0028f3c6
    Aug 26 00:47:54 voices kernel: f78e5f24 00000007 000036a9 00000000 00000000 00000002 f78e4000 000061e1
    Aug 26 00:47:54 voices kernel: Call Trace: [<c0260f83>] [<c01fac40>] [<c014f835>] [<c010770f>]
    Aug 26 00:47:54 voices kernel: Code: f0 ff 48 10 a1 74 0f 36 c0 8b 40 18 83 48 14 08 85 d2 0f 85


    >>EIP; c0263127 <atm_ioctl+927/c90> <=====

    >>ebx; ffffffff <END_OF_CODE+7647f28/????>
    >>ecx; c02c7c14 <atm_clip_ops_mutex+0/14>
    >>edx; ffffff9e <END_OF_CODE+7647ec7/????>
    >>esi; f78812b4 <_end+3752031c/3858a0c8>
    >>edi; 000061e1 Before first symbol
    >>ebp; f6f27800 <_end+36bc6868/3858a0c8>
    >>esp; f78e5f04 <_end+37584f6c/3858a0c8>

    Trace; c0260f83 <__lock_svc_proto_ioctl+43/80>
    Trace; c01fac40 <sock_ioctl+40/80>
    Trace; c014f835 <sys_ioctl+f5/2b0>
    Trace; c010770f <system_call+33/38>

    Code; c0263127 <atm_ioctl+927/c90>
    00000000 <_EIP>:
    Code; c0263127 <atm_ioctl+927/c90> <=====
    0: f0 ff 48 10 lock decl 0x10(%eax) <=====
    Code; c026312b <atm_ioctl+92b/c90>
    4: a1 74 0f 36 c0 mov 0xc0360f74,%eax
    Code; c0263130 <atm_ioctl+930/c90>
    9: 8b 40 18 mov 0x18(%eax),%eax
    Code; c0263133 <atm_ioctl+933/c90>
    c: 83 48 14 08 orl $0x8,0x14(%eax)
    Code; c0263137 <atm_ioctl+937/c90>
    10: 85 d2 test %edx,%edx
    Code; c0263139 <atm_ioctl+939/c90>
    12: 0f 85 00 00 00 00 jne 18 <_EIP+0x18>


    --
    *[ Łukasz Trąbiński ]*
    SysAdmin @wsisiz.edu.pl
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