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

From: bill davidsen (davidsen_at_tmr.com)
Date: 12/16/03

  • Next message: Linda Xie: "PATCPATCH -- add unlimited name lengths support to sysfs" 
    To: linux-kernel@vger.kernel.org
Date:	16 Dec 2003 22:45:55 GMT

    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.
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