Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 27 Mar 2001 09:38:13 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 27 Mar 2001 09:38:03 -0500 Received: from inet.connecttech.com ([206.130.75.2]:59592 "EHLO inet.connecttech.com") by vger.kernel.org with ESMTP id ; Tue, 27 Mar 2001 09:37:45 -0500 Message-ID: <0f5d01c0b6cb$ebcbeb40$294b82ce@connecttech.com> From: "Stuart MacDonald" To: "Thomas Foerster" , In-Reply-To: <20010327064904Z130600-406+4294@vger.kernel.org> Subject: Re: URGENT : System hands on "Freeing unused kernel memory: " Date: Tue, 27 Mar 2001 09:40:50 -0500 Organization: Connect Tech Inc. X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4522.1200 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4522.1200 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org From: "Thomas Foerster" > But suddenly the box was offline. One technical assistant from our ISP tried to reboot > our server (he couldn't tell me if there had been any messages on the screen), but the > system always hangs on > > Freeing unused kernel memory: xxk freed I have a customer with the same symptom. They have stock Mandrake 7.2 (kernel 2.2.17-21mdk) and have installed serial-5.05 into it. The kernel boots to the Freeing message and hangs. I noticed ctl-alt-del still works, so I configured in magic sysrq (Documentation/sysrq.txt). sysrq-p allowed me to get the eip, which checking against the System.map I find is mod_timer(). A quick printk showed me that the kernel isn't hung, it's in an infinite loop, with mod_timer() being one of the calls in the loop. YMMV, but hopefully this method can help you find your problem. ..Stu - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/