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    SubjectRe: [BUG] 2.6.19-rc3 autofs crash on my IA64 box
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    On Thu, 2006-11-02 at 18:51 +0900, Yasunori Goto wrote:
    > Hello.
    >
    > > hi,
    > > 2.6.19-rc3 kernel crashes on my IA64 box, it seems the problem
    > > of autofs fs. I debug this problem, if autofs kernel does not
    > > match daemon version, it will call autofs_catatonic_mode.
    > > But at that time sbi->pipe is NULL.
    > >
    > > void autofs_catatonic_mode(struct autofs_sb_info *sbi)
    > > {
    > > .........
    > > fput(sbi->pipe); /* Close the pipe */
    > > ^^^^^^^^^^^^
    > > sbi->pipe seems NULL;
    > > autofs_hash_dputall(&sbi->dirhash); /* Remove all dentry pointers */
    > > }
    > >
    >
    > My box crashed too.
    >
    > Following fix does not seem enough.
    > http://marc.theaimsgroup.com/?l=linux-kernel&m=116110204104327&w=2

    I'm not surprised it addresses a completely different problem.

    > If version does not match at autofs_fill_super(), then sbi->pipe
    > is not set yet.
    > I suppose something like following patch is necessary.

    At least but I'll need to check a bit further into this and the autofs4
    module should be updated in a similar manner. Even though it will
    support the latest requested version it should still handle this error
    case.

    Ian


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