Re: v2.6.31-rc6: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008

[Eric W. Biederman]

Xiaotian Feng <xtfeng@xxxxxxxxx> writes:

> On Thu, Aug 20, 2009 at 2:07 PM, Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
> wrote:
>
>
>     ebiederm@xxxxxxxxxxxx (Eric W. Biederman) writes:
>
>     > I'm not certain who I should route this too, but I just had 2.6.31-rc6
>     > fall over on me. ÂI don't know how reproducible this will be but
>     > I have a full crash dump if someone is interested in looking into this.
>
>     Looks like I was wrong. ÂThis is appears trivial to reproduce,
>     I have just reproduced it two more times in a row. ÂI think
>     the problem is pty related.
>
>     I was looking into a change in behavior on 2.6.31-rc6 where
>     data was being lost, and it appears one variant of my test program
>     kills the kernel.
>
>     The following program run as an unprivileged user causes a kernel
>     panic in about a minute:
>
>     aka
>
>     while :; do ./KernelTtyTest ; done
>
>
> oops.... It panics my x86_64 machine.....

I guess I forgot to mention that detail.  Thanks for confirming this
bug isn't just me.

Eric
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