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Re: ext3 is still locking up



On Tuesday 21 January 2003 18:19 pm, Stephen C. Tweedie wrote:
> Hi,
>
> On Tue, 2003-01-21 at 20:53, Pascal Nobus wrote:
> > I upgraded the kernel to 2.4.18-19.7.x, changed the memory, but still got
> > problems.
>
> I'd start by running memtest86 on it.  Your oops:
> >  EIP is at copy_files [kernel] 0x169 (2.4.18-19.7.x)
> >  Call Trace: [<c011763e>] do_fork [kernel] 0x2ce (0xca5fdf6c))
> >  [<c0107515>] sys_fork [kernel] 0x15 (0xca5fdfac))
> >  [<c010893b>] system_call [kernel] 0x33 (0xca5fdfc0))
>
> isn't actually anything to do with ext3; rather, the "copy_files"
> function is an internal function which copies the the list of open files
> from a parent process to its child when a process forks.  Getting an
> oops there is usually a sign of memory corruption, and the
>
> > And now and then I see this messages (sometimes without any effects)
> > EXT3-fs error (device ide0(3,2)): ext3_free_blocks: Freeing block in
> > system zone - block = 2 fsck:  contains a file system with errors, check
> > forced.
>
> errors are consistent with that.
>
> You said you've changed the memory, but it could be many other problems
> --- a CPU fault, the CPU overheating (check the fan!), cache problems, a
> chipset fault --- contributing to the memory corruption even if the RAM
> itself is fine; or the hardware might be perfect but the BIOS settings
> wrong.  memtest86 is definitely the next diagnostic for you to try in
> this case, as if that shows an error, you know it's definitely not a
> kernel problem and you can start narrowing down which part of the
> hardware is causing the trouble.
>
> Cheers,
>  Stephen
>
>

Thought I'd throw in a link:

http://www.memtest86.com/

Memtest86 has saved me many hours of hair pulling agony in diagnosing problems 
:). One thing to note from personal experience, let it run for an extended 
period (on the order of days). More obscure memory bugs/timing issues 
sometimes do not show up on the first couple scans/tests.

Cheers,
Jeremy





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