linux-kernel - Re: Oops after merge of tty-next

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 23 Jul 2012 15:51:03 +0100
From:	Ian Abbott <abbotti@....co.uk>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Ian Abbott <ian.abbott@....co.uk>,
	lkml <linux-kernel@...r.kernel.org>,
	Alan Cox <alan@...ux.intel.com>,
	Greg KH <gregkh@...uxfoundation.org>
Subject: Re: Oops after merge of tty-next

On 2012-07-21 23:41, Alan Cox wrote:
> On Fri, 20 Jul 2012 23:07:06 +0100
> Ian Abbott <abbotti@....co.uk> wrote:
>
>> I'm getting an Oops in the linux-next tree today after the merge of the
>> remote-tracking branch 'tty/tty-next'.  I bisected it down to commit
>> 36b3c070d2346c890d690d71f6eab02f8c511137 in
>> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git :
>>
>>     tty: Move the handling of the tty release logic
>
> Ok that's not improbable, I thought I had them all nailed.
>
>> Sorry, I don't have a copy of the Oops right now, but it's failing
>> somewhere in tty_open() or check_tty_count() during system boot,
>> probably when getty opens one of the vc tty devices.
>
> That would be more surprising as its a path I tested a lot but strange
> things occur. What may also be very important is to know what distro you
> are using.

Sorry for the late reply.  I'm using Gentoo Linux built from source for 
~amd64 (unstable).

I've grabbed a few Oops messages (transcribed from photographs, I have 
the slightly blurry photos to go with the attached text files if 
needed).  The kernel was built from the actual commit point mentioned in 
the original post.  I can provide the kernel binary if needed for 
disassembly.

The crashes all seem to be while the devfs process is running.  One 
thing strange I noticed is that I'm using Gentoo's "OpenRC" boot system, 
but the crashes only occur when it is configured to start services in 
parallel (rc_parallel="YES" in /etc/rc.conf).

-- 
-=( Ian Abbott @ MEV Ltd.    E-mail: <abbotti@....co.uk>        )=-
-=( Tel: +44 (0)161 477 1898   FAX: +44 (0)161 718 3587         )=-

View attachment "oops_7502.txt" of type "text/plain" (2531 bytes)

View attachment "oops_7503.txt" of type "text/plain" (2391 bytes)

View attachment "oops_7504.txt" of type "text/plain" (2507 bytes)