Re: Filesystem tests crashing host

[Paul Goyette <paul%whooppee.com@localhost>]

On Thu, 14 Apr 2011, Mindaugas Rasiukevicius wrote:

> Andreas Gutafsson <gson%gson.org@localhost> wrote:
> > Jukka Ruohonen wrote:
> > > Also some filesystem tests appear to panic the whole Qemu host. For
> > > instance, [...]
> > >     nfs_fillfs: uvm_fault(0xffffffff80ca65e0, 0xffffffff80f0a000, 1) ->
> > > e
> >
> > My automated i386 tests are also dying with a kernel panic every time.
> > The problem started with following pair of commits:
> >
> >   commit 2011.04.11.22.31.43 rmind src/sys/kern/uipc_sem.c 1.30
> >   commit 2011.04.11.22.31.43 rmind src/sys/sys/file.h 1.72
> >
> > and is still there as of today (2011.04.13.12.40.54).
> >
> > Logs are at <http://www.gson.org/netbsd/bugs/build/commits-2011.04.html>.
>
> Cannot reproduce the problem by running tests in src/tests/fs on my host.
> Nor I really see how semaphore would affect file systems (file.h change
> should have no harm).  Also, new semaphore code itself was tested, and
> seem to work for me well.
>
> Can you collect more data?

I'm working on getting a backtrace out of ddb.  But I'm also having 
trouble with reproducing it locally.  It fails frequently on the 
automated test bed, but not if I run it manually.  :(



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