Re: kern/41974: panic in cpu_in_cksum / likely NFS issue

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

The following reply was made to PR kern/41974; it has been noted by GNATS.

From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: kern-bug-people%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost, 
netbsd-bugs%NetBSD.org@localhost
Subject: Re: kern/41974: panic in cpu_in_cksum / likely NFS issue
Date: Wed, 2 Sep 2009 16:28:01 +0200

 On Wed, Sep 02, 2009 at 06:00:00AM +0000, spz%NetBSD.org@localhost wrote:
 > Machine: amd64
 > >Description:
 >      This has been greeting me at least 4 times now:
 > 
 > uvm_fault(0xffffffff80b662c0, 0xffff80012da62000, 1) -> e
 > fatal page fault in supervisor mode
 > trap type 6 code 0 rip ffffffff80465425 cs 8 rflags 10206 cr2  
 > ffff80012da62000 cpl 4 rsp ffff80003232c2b8
 > kernel: page fault trap, code=0
 > Stopped in pid 0.47 (system) at netbsd:cpu_in_cksum+0xa5:       movl    
 > 0(%rbx),
 > %ecx
 > db{0}> bt
 > cpu_in_cksum() at netbsd:cpu_in_cksum+0xa5
 > uvm_fault(0xffffffff80b87e60, 0x0, 1) -> e
 
 Looks a lot like what I'm seeing on a UP alpha NFS client. This seems to
 be related do the server going away and back (I suspect it's the same
 for this client).
 
 See http://mail-index.netbsd.org/current-users/2008/12/23/msg006816.html
 and followups
 
 
 -- 
 Manuel Bouyer <bouyer%antioche.eu.org@localhost>
      NetBSD: 26 ans d'experience feront toujours la difference
 --