linux-kernel - Re: 2.6.21-rc5-mm4

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Message-Id: <20070405133109.fe416273.akpm@linux-foundation.org>
Date:	Thu, 5 Apr 2007 13:31:09 -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 Thu, 05 Apr 2007 13:02:59 -0400
Valdis.Kletnieks@...edu wrote:

> On Mon, 02 Apr 2007 22:47:45 PDT, Andrew Morton said:
> > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.21-rc5/2.6.21-rc5-mm4/
> 
> 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
> 
> I've not identified exactly when it happens, but it's towards the very end of
> handling /etc/rc5.d, it's already up to the S98's.  Odd thing is it only happens
> when I start with RedHat's 'graphical boot', and may be related to the shutdown
> of the X server that's displaying the boot progress preparing to launch the
> X server for gdm logins (as I'm also seeing a hang sometimes when shutting
> down - so it is possibly a "shutting down X server nukes system" bug).

Thanks.

I'd have thought that the full trace could be captured with netconsole.

> Figured I'd toss this heads-up in case it rings any bells, while I go do
> the bisection dance on -rc5-mm4 (-mm2 is OK, and -mm3 doesn't boot for me
> for other reasons I didn't chase down before -mm4 came out and fixed it, so
> I have a ways to bisect)
> 

No, I'm not aware of anyone else hitting anything like that.

Bisection would be good, and probably pretty quick - I'd pick git-net.patch
as the first pivot point.

But we'd still be wanting the full trace if poss please.
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