> Sender: root@dns.centro.ru
Hans Reiser <hans@reiser.to> wrote on Tue, 20 Jun 2000 03:38:14 -0700:
> "Alexei I. Adamovich" wrote:
> >
> > Alexander Viro <viro@math.psu.edu> wrote on 19 Jun 2000 09:06:21 -0400 (EDT)
> > > On Mon, 19 Jun 2000, Alexei I. Adamovich wrote:
> > >
> > > > > Jun 15 10:33:38 adam kernel: iput: Aieee, semaphore in use inode
> > > 03:06/496185, count=-1012063976
> > > >
> > > > Seems, it's knfsd issue (03:06 is /dev/hda6). Am I right?
> > >
> > > Seems it's a severe memory corruption. Notice the "count" part.
> > Yes, it's possible. Since the problem certainly isn't the hardware
> > one, this can mean that somebody assigned something like 0xc3ad2118
> > (==-1012063976) into the semaphore count. AFAIK it looks like some
> > pointer to the kernel memory space--so your guess looks like bright
> > one.
> > But also it can be an underflow--current processors are so fast
> > comparing to the total time the test had been running before kernel
> > issues this message (something like an hour or a half of an hour).
> > Anyway, I can trigger the problem only when Stress.sh is running over
> > knfsd-served nfs tree.
> I am confused, you say it could be bad memory but then it seems you argue to the
> contrary?
Thanks, Hans for pointing me. My apologies, I certainly mean software
problem here: Russian equivalent of "memory"+"corruption" can mean not
only bad memory, but also bad usage of memory by assigning non-appropriate
values to the memory locations.
The reason why I think it isn't the hardware but certainly software
problem is that these kernel-related problems are exposed on my
box--on several kernel versions--only when stress-testing local
knfs-exported nfs-mounted partition.
Thanks,
Alexei I.Adamovich
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