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

[Christoph Egger <Christoph_Egger%gmx.de@localhost>]

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

From: Christoph Egger <Christoph_Egger%gmx.de@localhost>
To: Reinoud Zandijk <reinoud%NetBSD.org@localhost>
Cc: gnats-bugs%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 00:05:06 +0100

 On 14.12.10 00:00, Reinoud Zandijk wrote:
 > 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
 
 Are those over tcp or udp ?
 
 > 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.
 
 Ok, thank you for the information.
 
 Christoph