Re: crypto-loop + highmen -> random crashes in -test11

[davidsen@tmr.com (bill davidsen)]

In article <1071570648.3528.50.camel@localhost>,
Soeren Sonnenburg  <kernel@nn7.de> wrote:

| I get random crashes/corruption/ init kills when I use cryptoloop on
| this highmem enabled ppc machine.
| 
| Applying the loop-* patches at
| http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.0-test10/2.6.0-test10-mm1/broken-out
| 
| seem to fix this problem (at least I did not get any crash due to
| cryptoloop in the last 2 days)

Thank you for identifying this. I have been having perfect results iwth
the systems I have running cryptoloop, but they are both small. Now I
not only know why I don't have problems, I have a way to prevent
problems.

Hopefully this will get into 2.6.0-final, since it fixes a hard fail case.
| 
| Steps to reproduce:
| 
| dd if=/dev/zero of=/file bs=1M count=100
| losetup -e blowfish /dev/loop0 /file
| Password:
| mkfs -t ext3 /dev/loop0
| mount /dev/loop0 /mnt
| cd /mnt  
| dd if=/dev/zero of=bla
| 
| gives you nice unpredictable crashes.
| 
| 
| Soeren
| 
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-- 
bill davidsen <davidsen@tmr.com>
  CTO, TMR Associates, Inc
Doing interesting things with little computers since 1979.