From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Wilcox Subject: Re: Stuck gnat1 processes Date: Fri, 10 Jun 2011 06:37:19 -0600 Message-ID: <20110610123719.GD29089@parisc-linux.org> References: <20110610013034.GA5353@hiauly1.hia.nrc.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-parisc@vger.kernel.org To: John David Anglin Return-path: In-Reply-To: <20110610013034.GA5353@hiauly1.hia.nrc.ca> List-ID: List-Id: linux-parisc.vger.kernel.org On Thu, Jun 09, 2011 at 09:30:35PM -0400, John David Anglin wrote: > As far as I can tell, all are stuck in the kernel. Gdb can't step > the code, nor do breaks on the next instruction ever get hit. This > may have something to do with the fact that the instruction is trying > to read from text (C switch statement). sysrq-l will show a backtrace for all CPUs. That might be helpful in diagnosing this problem. -- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step."