skiplist db corruption

Bernhard Reiter bernhard at
Mon Jan 1 16:32:40 EST 2007

On Monday 13 November 2006 03:59, Robert Mueller wrote:
> Just reviving an old issue to see if anyone has any more information.
> We still see this every now and then, most often with seen state databases.
> It's most often after an unclean shutdown, but I've seen it at other times
> as well. Has anyone got any more ideas on what might be causing this?

The linux people have found a long standing problem with mmap().
Citing from

This would fit our current observations that          
using mremap would be irrelevant and that these        
problems were not seen on FreeBSD or Solaris systems.        
See commit 7658cc289288b8ae7dd2c2224549a048431222b3    
Author: Linus Torvalds <torvalds at>    
Date:   Fri Dec 29 10:00:58 2006 -0800    
    VM: Fix nasty and subtle race in shared mmap'ed page writeback    
or the nice LWN article at:    

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