From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Dr. Ernst Molitor" Subject: Re: Fw: PROBLEM: Linux V. 2.6.3 panics with "Buffers at physical address >16Mb used for aha1542" at boot time Date: Fri, 20 Feb 2004 09:30:37 +0100 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <1077265837.1297.9.camel@felicia> References: <20040218171212.0eb6618a.akpm@osdl.org> <1077243517.2164.61.camel@mulgrave> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from mibi03.meb.uni-bonn.de ([131.220.21.4]:780 "EHLO mibi03.meb.uni-bonn.de") by vger.kernel.org with ESMTP id S267729AbUBTIax (ORCPT ); Fri, 20 Feb 2004 03:30:53 -0500 In-Reply-To: <1077243517.2164.61.camel@mulgrave> List-Id: linux-scsi@vger.kernel.org To: James Bottomley Cc: Andrew Morton , SCSI Mailing List , molitor@uni-bonn.de Dear James Bottomley, thank you very much for looking into the problem I have seen. Following to your kind suggestion, I have commented out the two "panic (... Buffers and physical address > 16Mb ...)" lines in the aha1542.c source and added "BUG();"-lines in their places. Booting the kernel built afterwards resulted in a bunch of messages; I haven't been able to read the first lines; this is what I could copy: [] scsi_request_fn+0x1c2/0x310 [] __elv_add_request+0x2d/0x50 [] blk_insert_request+0x84/0xc0 [] scsi_insert_special_req+0x39/0x40 [] scsi_wait_req+0x69/0xb0 [] scsi_wait_done+0x0/0x80 [] sr_do_ioctl+0x90/0x290 [] sr_packet+0x25/0x40 [] cdrom_is_mrw+0x52/0x80 [] get_capabilities+0x1d0/0x430 [] sprintf+0x1f/0x30 [] sr_probe+0x1f/0x30 [] bus_match+0x3d/0x70 [] driver_attach+0x5c/0xa0 [] bus_add_driver+0xa6/0xc0 [] init_sr+0x2f/0x40 [] do_initcalls+0x2b/0xa0 [] init_workqueues+0x12/0x29 [] init+0x4c/0x150 [] init+0x0/0x150 [] kernel_thread_helper+0x5/0x18 Code: 0f 0b 3e 00 c2 5a 43 c0 89 ec 5d c3 8d 76 00 8d bc 28 00 00 <0>Kernel panic: Attempted to kill init! Please don't hesitate to contact me if I can be of any further help in this matter. Best wishes and regards, Ernst On Thu, 2004-02-19 at 21:18 -0500, James Bottomley wrote: > On Wed, 2004-02-18 at 20:12, Andrew Morton wrote: > > thank you very much for your work on Linux. Today, I came across a > > problem; sorry, I have failed in trying to spot the cause... > > > > [1.] Linux V. 2.6.3 panics with "Buffers at physical address >16Mb used > > for aha1542" at boot time on my box. > > Could you replace the panic with a BUG() statement and make sure you > have CONFIG_KALLSYMS set, that should give us a backtrace showing where > the bad kernel allocation is. > > Thanks, > > James > > > > ______________________________________ > Inflex - installed on mailserver for domain @mibi03.meb.uni-bonn.de > Queries to: postmaster@mibi03.meb.uni-bonn.de