Possible race in device mapper

[Jeroen van Disseldorp]

Hi all,

I'm mailing this directly as I'd like an opinion of you guys on whether my 
hunch could be correct:

I've filed a kernel bug report early this year and have been gathering more 
and more info on it ever since. (Bug #295657.) In the beginning it seemed an 
EXT3 bug on RAID, that messed up the filesystem. Later I suspected that it 
might be a problem with 4K stacks, but last week I've come to the conclusion 
that there might be some sort of race condition in the dm crypto-layer that 
messes up when decrypting. It's especially easily triggered during heavy 
disk-io.

I'm running 2.6.11-1-686-smp on a dual P2-400 with 2 raidsets. See the bug 
report for more info: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=295657

Since I removed the crypto-layer from the filesystem I have no more filesystem 
inconsistencies.

Could you please shed your light on this matter to see whether I should file a 
formal dm-bug? Thanks.

Cheers,
Jeroen van Disseldorp

PS. Neil: Although you're not lister as maintainer, I got a tip from Wichert 
Akkerman that you might be able to help in this.