panic: System call lstat returning with 1 locks held

Attilio Rao attilio at freebsd.org
Wed Feb 6 06:58:00 PST 2008


2008/2/6, Attilio Rao <attilio at freebsd.org>:
> 2008/2/6, Yar Tikhiy <yar at comp.chem.msu.su>:
>
> > On Wed, Feb 06, 2008 at 02:49:49PM +0100, Attilio Rao wrote:
>  >  [...]
>  >
>  > > Want to see if this bt has been helpful? :)
>  >  > Can you try the attached patch and see if kernel rings a bell?:
>  >  > http://www.freebsd.org/~attilio/ntfs_debug.diff
>  >
>  >
>  > The kernel just panics. :-)
>
>
> This is the new I wanted to know! :)
>  With better checks in lockmgr code, we would have caught more
>  informations about it.
>
>  Can you please now add DDB support and once it breaks in DDB do a
>  'show alllocks' and maybe other small investigations?
>  This should shade a light for us.

Could you please enable NTFS_DEBUG too and maybe see, when the kernel
panics, what is the value of i_usecount for the specified ip?
I want to exclude refcount leaking.

Thanks,
Attilio


-- 
Peace can only be achieved by understanding - A. Einstein


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