From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031377AbXEDQgd (ORCPT ); Fri, 4 May 2007 12:36:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1031381AbXEDQgc (ORCPT ); Fri, 4 May 2007 12:36:32 -0400 Received: from mailgate.ics.forth.gr ([139.91.1.2]:54818 "EHLO mailgate.ics.forth.gr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1031377AbXEDQgb (ORCPT ); Fri, 4 May 2007 12:36:31 -0400 Message-ID: <1178296546.463b60e24ce76@webmail.ics.forth.gr> Date: Fri, 4 May 2007 19:35:46 +0300 From: mcatos@ics.forth.gr To: linux-kernel@vger.kernel.org Subject: Re: Error using the buffer cache MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1253 Content-Transfer-Encoding: 8bit User-Agent: Internet Messaging Program (IMP) 3.2.1 X-Originating-IP: 139.91.70.46 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I have isolated the problem a little bit. Here's what I do: struct buffer_head *bh; sector_t sector = 0; bh = __bread(bdev, sector, bdev_get_queue(bdev)->hardsect_size); brelse(bh); sector++; bh = __bread(bdev, sector, bdev_get_queue(bdev)->hardsect_size); brelse(bh); And I get this error: BUG: soft lockup detected on CPU#1! [] show_trace_log_lvl+0x185/0x1a0 [] show_trace+0x12/0x20 [] dump_stack+0x19/0x20 [] softlockup_tick+0x9e/0xd0 [] run_local_timers+0x12/0x20 [] update_process_times+0x34/0x80 [] smp_apic_timer_interrupt+0x6d/0x80 [] apic_timer_interrupt+0x2a/0x30 [] _read_unlock_irq+0x24/0x30 DWARF2 unwinder stuck at _read_unlock_irq+0x24/0x30 Leftover inexact backtrace: [] show_trace+0x12/0x20 [] dump_stack+0x19/0x20 [] softlockup_tick+0x9e/0xd0 [] run_local_timers+0x12/0x20 [] update_process_times+0x34/0x80 [] smp_apic_timer_interrupt+0x6d/0x80 [] apic_timer_interrupt+0x2a/0x30 [] find_lock_page+0x85/0xa0 [] find_or_create_page+0x3b/0xb0 [] __getblk+0xef/0x2e0 [] __bread+0x12/0xb0 What am I doing wrong? ------------------------------------------------- This mail sent through IMP: http://horde.org/imp/