Oops in 2.4.9

[Luca Montecchiani <m.luca@iname.com>]

I've got an oops using fdupes(1) as a normal user.
I'm running a 2.4.9 kernel with the SetPageReferenced(page);
changes to mm/memory.c, investigating the oops with Daniel Philips 
seem that this is not the cause.

I can't reproduce the oops anymore :(
I'm using ext2 only file systems.

(1) fdupes scans directory for duplicate files, in my directory
    there are around 15.000 files.

Unfortunately I'd run ksymoops after recompiling the kernel :

ksymoops 2.4.1 on i586 2.4.9.  Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.9/ (default)
     -m /usr/src/linux/System.map (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.

Aug 21 14:46:35 localhost kernel: Unable to handle kernel paging request at virtual address 33ff08f8
Aug 21 14:46:35 localhost kernel: c012e488
Aug 21 14:46:35 localhost kernel: *pde = 00000000
Aug 21 14:46:35 localhost kernel: Oops: 0000
Aug 21 14:46:35 localhost kernel: CPU:    0
Aug 21 14:46:35 localhost kernel: EIP:    0010:[sys_read+160/196]
Aug 21 14:46:35 localhost kernel: EFLAGS: 00010206
Aug 21 14:46:35 localhost kernel: eax: 33ff080c   ebx: 00001000   ecx: 00001000   edx: 00000001
Aug 21 14:46:35 localhost kernel: esi: ccf338a0   edi: 00001000   ebp: bffffb84   esp: c7275fb4
Aug 21 14:46:35 localhost kernel: ds: 0018   es: 0018   ss: 0018
Aug 21 14:46:35 localhost kernel: Process fdupes (pid: 1401, stackpage=c7275000)
Aug 21 14:46:35 localhost kernel: Stack: c7274000 0823bad8 0823bad8 c0106be3 00000003 40015000 00001000 0823bad8
Aug 21 14:46:35 localhost kernel:        0823bad8 bffffb84 00000003 0000002b 0000002b 00000003 400dde14 00000023
Aug 21 14:46:35 localhost kernel:        00000202 bffffb6c 0000002b
Aug 21 14:46:35 localhost kernel: Call Trace: [system_call+51/64]
Aug 21 14:46:35 localhost kernel: Code: f6 80 ec 00 00 00 01 74 0b 6a 01 50 e8 e3 42 01 00 83 c4 08
Using defaults from ksymoops -t elf32-i386 -a i386

Code;  00000000 Before first symbol
00000000 <_EIP>:
Code;  00000000 Before first symbol
   0:   f6 80 ec 00 00 00 01      testb  $0x1,0xec(%eax)
Code;  00000007 Before first symbol
   7:   74 0b                     je     14 <_EIP+0x14> 00000014 Before first symbol
Code;  00000009 Before first symbol
   9:   6a 01                     push   $0x1
Code;  0000000b Before first symbol
   b:   50                        push   %eax
Code;  0000000c Before first symbol
   c:   e8 e3 42 01 00            call   142f4 <_EIP+0x142f4> 000142f4 Before first symbol
Code;  00000011 Before first symbol
  11:   83 c4 08                  add    $0x8,%esp


1 warning issued.  Results may not be reliable.


hope this help,
luca
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