From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 51094DE4CA for ; Tue, 6 Jan 2009 23:03:35 +1100 (EST) Subject: Re: Lock-up on PPC64 From: Benjamin Herrenschmidt To: malc In-Reply-To: References: <20081222233223.GA6688@joi> <877i5rh9rm.fsf@linmac.oyster.ru> <20081223234513.GA8730@deepthought> <871vvy77v4.fsf@linmac.oyster.ru> <1230165163.7292.32.camel@pasglop> <1231158516.8367.3.camel@localhost> Content-Type: text/plain Date: Tue, 06 Jan 2009 23:02:53 +1100 Message-Id: <1231243373.14860.24.camel@pasglop> Mime-Version: 1.0 Cc: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Mon, 2009-01-05 at 19:34 +0300, malc wrote: > Before this change (atleast) mono_handle_native_sigsegv was executed > (before machine locks-up hard) after the change this code path is > never touched. > > The fact that machine locks up hard and not even magic sysrq works > is what deserves a better look. Indeed. It's possible that the normally not hit error case is triggering a different bug. Definitely worth looking at. I didn't have a chance so far, I'm a bit swamped at the moment, but keep pining me please :-) Cheers, Ben.