From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jens Axboe 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 09:38:08 +0100 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <20040220083808.GA11822@suse.de> References: <20040218171212.0eb6618a.akpm@osdl.org> <1077243517.2164.61.camel@mulgrave> <1077265837.1297.9.camel@felicia> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from ns.virtualhost.dk ([195.184.98.160]:34220 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S267733AbUBTIiO (ORCPT ); Fri, 20 Feb 2004 03:38:14 -0500 Content-Disposition: inline In-Reply-To: <1077265837.1297.9.camel@felicia> List-Id: linux-scsi@vger.kernel.org To: "Dr. Ernst Molitor" Cc: James Bottomley , Andrew Morton , SCSI Mailing List On Fri, Feb 20 2004, Dr. Ernst Molitor wrote: > 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. Hmm... James, sr_do_ioctl() used to do bouncing for private commands, any reason it doesn't do that anymore? -- Jens Axboe