On Mon, Nov 21, 2011 at 1:49 PM, Rafael J. Wysocki [off-list ref] wrote:

Subject    : Simultaneous cat and external keyboard input causing kernel panic
Submitter  : Timo Jyrinki [off-list ref]
Date       : 2011-11-03 12:14
Message-ID : CAJtFfxmovJHspHHKbvBVc4pw+u5mjGmUejCXEzdV+GqE=jVSOQ@mail.gmail.com
References : http://marc.info/?l=linux-kernel&m=132032253903074&w=2

So while funny, I doubt this is actually a bug. It's a feature, as
pointed out by Clemens Ladisch in that thread.

It's simply sysrq-c: "perform a system crash by a NULL pointer dereference".

Now, I'm perfectly willing to consider that feature to be a
mis-feature, and that this should be considered a bug to be fixed. But
it is not a regression.

Keeping it on the regression list just because it is amusing is
understandable, though ;)

                    Linus