Possible bug with kernel decompressor.

From: Matthew Schumacher (schu_at_schu.net)
Date: 07/14/04

  • Next message: Martin D Kealey: "[KBUG] Oops in kscand" 
    Date:	Tue, 13 Jul 2004 17:47:34 -0800
To: linux-kernel@vger.kernel.org

    List,

    I think I found a bug here because I can repeatably get the same kernel
    (checked with md5sum) to decompress and to fail with the error:

    invalid compressed format (err=2)

       --System halted

    Here is how I can reproduce the problem:

    Boot 2.6.8-rc1
    Run md5sum on 2.6.8-rc1 kernel
    Turn power off (this is an embedded system with only ramdisk mounted)
    Turn power on
    Kernel fails to boot with "invalid compressed format (err=2)"
    Restart system
    Boot 2.4.26
    Run md5sum on 2.6.8-rc1 kernel (matches md5sum above)
    Shutdown properly
    boot 2.6.8-rc1 (works fine)
    Run md5sum on 2.6.8-rc1 kernel (matches md5sum above)

    So you see if I don't shutdown properly (which shouldn't be required for
    an embedded system using a ramdisk) my kernel won't decompress itself
    until I run another kernel and shutdown properly. I know that the
    kernel didn't change so something else must be causing it to fail.

    I call this a bug simply because a power failure could cause someone to
    loose the ability to boot their machine.

    Here is the hardware:
    Whistle Interjet (486 SBC)
    64MB of memory
    IDE disk.
    Can reproduce with linux 2.6.5, 2.6.6, 2.6.7, and 2.6.8-rc1
    Both kernel images and the initrd image both live on a fat16 partition
    and are started with syslinux. I can reproduce this problem with any
    version of syslinux I have tried.

    Please CC me in any replies since I am not on the list.

    Thanks,

    schu

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  • Next message: Martin D Kealey: "[KBUG] Oops in kscand"

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