linux-kernel - Re: Kernel 3.0: Instant kernel crash when mounting CIFS

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, 15 Aug 2011 15:31:01 -0400
From:	Dave Jones <davej@...hat.com>
To:	Justin Piszcz <jpiszcz@...idpixels.com>
Cc:	Jeff Layton <jlayton@...ba.org>, Jesper Juhl <jj@...osbits.net>,
	linux-kernel@...r.kernel.org, Alan Piszcz <ap@...arrain.com>,
	Steve French <sfrench@...ba.org>, linux-cifs@...r.kernel.org
Subject: Re: Kernel 3.0: Instant kernel crash when mounting CIFS

On Mon, Aug 15, 2011 at 02:01:12PM -0400, Justin Piszcz wrote:
 > It crashed again with the patches, this time I got a picture:
 > http://home.comcast.net/~jpiszcz/20110815/26030-kernel-crash-when-cifs-mount.jpg
 > 
 > The machine is up no issues until you try and mount a CIFS share, then
 > the problem occurs, every time (and with the patches as well).

This looks like you oopsed in cache_alloc_refill, and then after that
the watchdog kicked in, and spewed traces, scrolling the backtrace for
the actual oops off the screen.

Might be worth trying to reproduce it with CONFIG_LOCKUP_DETECTOR disabled.

We frequently see this sort of thing reported in Fedora. It would be
nice if we had a means of either reading scrollback when we lockup,
or buffering the output so we pause between dumping traces.

	Dave

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/