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Re: kern/46221: Kernel panic in NFS server code
The following reply was made to PR kern/46221; it has been noted by GNATS.
From: Matthias Scheler <tron%zhadum.org.uk@localhost>
To: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
Subject: Re: kern/46221: Kernel panic in NFS server code
Date: Fri, 23 Mar 2012 14:11:06 +0000
On Fri, Mar 23, 2012 at 10:33:49AM +0100, Manuel Bouyer wrote:
> > The new code in ufs_fhtovp() finally triggered.
> > Here is the output of vprint():
> > ufs_fhtovp: ip == NULL on vp %p
> > : vnode @ 0xfffffe8169463be0, flags (0x80010<MPSAFE,CLEAN>)
> > tag VT_NON(0), type VREG(1), usecount 1, writecount 0, holdcount 0
> > freelisthd 0x0, mount 0xfffffe8214f82000, data 0x0 lock
> > 0xfffffe8169463cf0
> So it got a clean vnode. This is bad.
> I suspect ufs_ihashget() is returnning the clean vnode; otherwise it has to
> in ffs_vget() itself.
> Can you run a kernel with the attached patch and see if one of the KASSERT
> fires ? You can probably turn the check to a printf if you want to
> avoid the panic.
I'm currently testing a kernel Juergen Hannken-Illjes's patch
if that is alright.
Matthias Scheler http://zhadum.org.uk/
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