linux-kernel - Re: 2.6.21-rc5-mm4

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Message-Id: <20070406123355.a6f70a80.akpm@linux-foundation.org>
Date:	Fri, 6 Apr 2007 12:33:55 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Valdis.Kletnieks@...edu
Cc:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.21-rc5-mm4

On Fri, 06 Apr 2007 11:26:24 -0400
Valdis.Kletnieks@...edu wrote:

> On Thu, 05 Apr 2007 13:31:09 PDT, Andrew Morton said:
> > On Thu, 05 Apr 2007 13:02:59 -0400, Valdis.Kletnieks@...edu wrote:
> 
> > > Am seeing an Oops 'cannot handle kernel paging request' during late
> > > system startup, hand-copied traceback follows:
> > > 
> > > avc_has_perm_noaudit+0x2bf/0x506
> > > avc_has_perm+0x2b/0x5b
> > > selinux_socket_stream_connect+0x7e/0xc3
> > > unix_stream_connect+0x202/0x3f3
> > > sys_connect+0x7e/0xa4
> > > tracesys+0xde/0xe1
> 
> > Thanks.
> > 
> > I'd have thought that the full trace could be captured with netconsole.
> 
> I didn't have a second box available at first.  Then I blew close to 45
> minutes trying to figure out why netconsole was totally failing to work,
> before I found this in .config:
> 
> # CONFIG_NETCONSOLE is not set
> 
> "Do'h!" -- H. Simpson
> 
> Unfortunately, defining netconsole caused NETPOLL to be defined, which caused
> a recompile of half the known world, and the symptoms of the crash moved.
> 
> Film at 11, once I figure out what's going on, and fix the testbed in my
> office so I can actually catch this sucker - I may have to string a serial
> cable.  One solid good data point:
> 
> 21-rc5 with only the -mm4 'origin.patch' applied is OK, so whatever the
> issue is, it's not in Linus's tree.
> 

Oh well.  If it's all too much fuss, feel free to send the .config.  If it
happens on my machine(s) I can bisect it real quick.

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