Re: 2.6.6-rc3-mm2 (4KSTACK)

Paul Jakma
2004-05-07T03:45:26Z

On Thu, 6 May 2004, Andrew Morton wrote:

> That's a misdiagnosis. The problem here is that the kernel is
> taking a pagefault within show_trace(), and the pagefault handler
> calls show_trace(). It has gone infinitely recursive.

That happens after the initial stack overflow with a trace (from what
i could discern before it scrolled into oblivion) in NFS -> IP path
similar to the other non-recursive trace, see below.

> The bug is unrelated to the stack size. It is in show_trace() or
> thereabouts. That code tries to protect itself from recursive
> faults, but it's a vendor kernel and may be different from the
> public tree.

Fair enough but have a look at the other fault from that bug though:

https://bugzilla.redhat.com/bugzilla/attachment.cgi?id=99855&action=view

That one did not recurse for some reason.

regards,
--
Paul Jakma paul@clubi.ie paul@jakma.org Key ID: 64A2FF6A
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Fortune:
The program isn't debugged until the last user is dead.