From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Phillips Subject: Re: 2.5.74-mm1 Date: Sun, 6 Jul 2003 02:10:32 +0200 References: <20030703023714.55d13934.akpm@osdl.org> <200307051728.12891.phillips@arcor.de> <20030705121416.62afd279.akpm@osdl.org> In-Reply-To: <20030705121416.62afd279.akpm@osdl.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200307060210.32021.phillips@arcor.de> Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Saturday 05 July 2003 21:14, Andrew Morton wrote: > Daniel Phillips wrote: > > Kgdb is no help in > > diagnosing, as the kgdb stub also goes comatose, or at least the serial > > link does. No lockups have occurred so far when I was not interacting > > with the system via the keyboard or mouse. Suggestions? > > Enable IO APIC, Local APIC, nmi watchdog. Use serial console, see if you > can get a sysrq trace out of it. That's `^A F T' in minicom. OK, tried that. Still very dead. > I mean, it _has_ to be either stuck with interrupts on, or stuck with them > off. Interesting data: it always hangs on the 4th iteration of Ctrl-Alt-F7, Ctrl-Alt-F2. This smells like a bios stack overflow. I think I'd better go poke at the vendor at this point, no? I do feel Linux is exonerated, but then this just shows why we need to keep on moving, right on into the bios. Regards, Daniel -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org