Re: Bug in the sg driver

From: Randy.Dunlap (rddunlap_at_osdl.org)
Date: 10/06/03

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    Date:	Mon, 6 Oct 2003 11:20:28 -0700
    To: Dag Nygren <dag@newtech.fi>
    
    

    On Mon, 06 Oct 2003 21:06:36 +0300 Dag Nygren <dag@newtech.fi> wrote:

    |
    | Hi,
    |
    | just got back from a customer with major problems
    | with a LTO-drive and an Adaptec 19160.
    |
    | The problems was ones that HP claimed a firmware
    | upgrade would fix and even gave a tool for doing this:
    | hp_ltt.
    |
    | Running this the first time would always segfault and trying
    | a second time would consistently panic the system.
    |
    | We traced the segfault to sg_ioctl trying to do something.
    | After finding a vague hint with google I tried to boot with
    | mem=512M (The machine has 2GB of memory) and voila:
    | The update worked without any crashes.
    | We don't know yet if the firmware update fixed the original problem,
    | but the conclusion is:
    |
    | sg_ioctl seems to address illegal parts of memory when used with
    | kernels where highmem is enabled.
    |
    | Any sg-driver maintainers out there?

    from MAINTAINERS file:
    SCSI SG DRIVER
    P: Doug Gilbert
    M: dgilbert@interlog.com
    L: linux-scsi@vger.kernel.org
    W: http://www.torque.net/sg
    S: Maintained

    Any details, like kernel version, oops or panic logs, etc.?

    --
    ~Randy
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