Re: [PATCH] proc: task_mmu bug fix.

Eric W. Biederman
2006-03-01T13:00:37Z

Andrew Morton <akpm@osdl.org> writes:

> ebiederm@xmission.com (Eric W. Biederman) wrote:
>>
>> This should fix the big bug that has been crashing kernels when
>> fuser is called. At least it is the bug I observed here. It seems
>> you need the right access pattern on /proc/<pid>/maps to trigger this.
>
> Thanks. Do you think this is likely to fix the crashes reported by
> Laurent, Jesper, Paul, Rafael and Martin?

So I haven't tracked down all of the bug reports yet. But the
few bits I have seen make it likely. First the task_mmu change
was one of the largest change in logic I had to make. Second
the ugly bug reports seem to be about an extra decrement. Third
it seems to be my task_ref work that is the most implicated.

I will certainly follow and see what I can do to confirm that I have
gotten everything.

Eric