Re: Bus error with gssapi on HP-UX PA-RISC(32bit)

From: Simon Wilkinson (sxw_at_inf.ed.ac.uk)
Date: 05/05/03

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    Date: Mon, 5 May 2003 16:58:28 +0100 (BST)
To: Shaji Vinod <secure_bsd@yahoo.com>

    On Mon, 5 May 2003, Shaji Vinod wrote:

    > I have a problem in the gssapi patch.
    >
    > I have applied the gssapi patch for 3.4 version on
    > OpenSSH-3.5 and built the
    > source on HP-UX 11.11 (32 bit hardware).

    Firstly, there's now a patch available for 3.6.1p2. I'd recommend
    using this instead of the older patches, as it fixes a number of issues
    which may cause interop problems with other vendors GSSAPI code.

    > This is only happening when "-l" option is given. But
    > when this given just
    > as "ssh hostname" it works fine.

    When you say "works fine", do you mean that you successfully get a GSSAPI
    session, or just that they program no longer gives a SIGBUS.

    > So, the main problem
    > is with
    > "generic_gss_release_buffer". Particularly this is
    > happening when the client
    > system do not have /etc/krb5.conf file. If there is a
    > file /etc/krb5.conf,
    > then this error does not araise.

    I suspect that what you're seeing is a knock-on failure from the GSSAPI
    client library failing due to the lack of a configuration file. If the
    GSSAPI library doesn't modify the value of its output variables in a
    failure state, its possible that the patches, as they stand, may try to
    free unallocated memory.

    I'm currently testing a fix for the 3.6.1p2 patches to solve this.

    Cheers,

    Simon.

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