Re: kern/44206: reproducable (for me) NFS panic

[Reinoud Zandijk <reinoud%NetBSD.org@localhost>]

The following reply was made to PR kern/44206; it has been noted by GNATS.

From: Reinoud Zandijk <reinoud%NetBSD.org@localhost>
To: Christoph Egger <Christoph_Egger%gmx.de@localhost>
Cc: gnats-bugs%NetBSD.org@localhost, Reinoud Zandijk 
<reinoud%NetBSD.org@localhost>,
        kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
        netbsd-bugs%netbsd.org@localhost, martin%NetBSD.org@localhost
Subject: Re: kern/44206: reproducable (for me) NFS panic
Date: Tue, 14 Dec 2010 00:00:25 +0100

 Hi Christoph,
 
 On Mon, Dec 13, 2010 at 11:34:52PM +0100, Christoph Egger wrote:
 > On 13.12.10 22:10, Reinoud Zandijk wrote:
 > >  Note that it can only trigger on NFSv3
 > >  
 > >  -----
 > >  luiaard# mail
 > >  panic: kernel diagnostic assertion "mb->m_next != NULL" failed: file
 > >  "../../../../nfs/nfs_vnops.c", line 1377
 > 
 > Does it hang in cv_wait() in nfs_writerpc() when you remove the KASSERT?
 > Do you use nfs over tcp or udp?
 
 Its main mounts are :
 aaa.local:/usr/exports/luiaard         / nfs rw 0 0
 bbb.local:/home                        /home nfs rw 0 0
 
 and the servers are running with:
 /usr/sbin/nfsd -6 -u -t -n 6 
 
 When i remove the KASSERT() it just seems to work; tried to replicate it but
 it won't crash nor hang.
 
 With regards,
 Reinoud