From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Subject: Boot hang due to "pipe: fold file_operations instances in one" in next-20130408 Date: Mon, 08 Apr 2013 15:19:39 -0600 Message-ID: <5163346B.5090602@wwwdotorg.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Al Viro Cc: "linux-next-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-next.vger.kernel.org Al, I'm seeing a boot hang on Tegra in next-20130408. Even sysrq on the serial console doesn't work, yet I think cpuidle is still running since the LED that shows CPU power is flickering. git bisect points at commit 9984d73 "pipe: fold file_operations instances in one". Reverting the-merge-of-the-branch-that-contains-this-patch from next-20130408 certainly solves the problem; reverting just that one patch is a bit painful since it's in the middle of a bunch of other cleanup. Do you have any idea what might be wrong? I can't see anything obvious in the patch.