From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Subject: Re: Boot hang due to "pipe: fold file_operations instances in one" in next-20130408 Date: Mon, 08 Apr 2013 15:36:06 -0600 Message-ID: <51633846.2040305@wwwdotorg.org> References: <5163346B.5090602@wwwdotorg.org> <20130408212249.GT4068@ZenIV.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20130408212249.GT4068-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org> 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-tegra@vger.kernel.org On 04/08/2013 03:22 PM, Al Viro wrote: > On Mon, Apr 08, 2013 at 03:19:39PM -0600, Stephen Warren wrote: >> 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. > > What userland do you have? It's Ubuntu 12.04.01 for ARM (armhf), with quite a few updates not installed.