Re: 2.6.19-rc6-mm2

Neil Brown
2006-12-05T04:06:59Z

On Tuesday December 5, neilb@suse.de wrote:
>
> I notice it says:
> |
> v
> > 090: 6b 6b 6b 6b 6a 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
> > Single bit error detected. Probably bad RAM.
> > Run memtest86+ or a similar memory test tool.
>
> Have you tried running memtest86 ??

As Andrew correctly pointed out, this bit error is not a RAM problem.
It is actually the low bit of a counter a spinlock that was
decremented just before the WARN_ON. So it simply indicates that the
inode had already been freed, which I think we knew already.

Unfortunately I still have no idea why that inode had been
freed but was still referenced by a dentry....

How repeatable as this bug? How did you narrow it down to that patch?
Did you use git-bisect or something else?

Thanks,
NeilBrown