From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S937474AbXGRAAY (ORCPT ); Tue, 17 Jul 2007 20:00:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1765606AbXGRAAA (ORCPT ); Tue, 17 Jul 2007 20:00:00 -0400 Received: from mail.windriver.com ([147.11.1.11]:58523 "EHLO mail.wrs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760173AbXGQX77 (ORCPT ); Tue, 17 Jul 2007 19:59:59 -0400 Date: Tue, 17 Jul 2007 16:58:33 -0700 (PDT) From: Jeremy Katz X-X-Sender: jkatz@localhost.localdomain To: Thomas Gleixner cc: linux-kernel@vger.kernel.org, Andrew Morton , Ingo Molnar , Oleg Nesterov , Stable Team Subject: Re: [PATCH] posix-timer: fix deletion race In-Reply-To: Message-ID: References: <1184662429.12353.426.camel@chaos> <1184703427.12353.476.camel@chaos> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-OriginalArrivalTime: 17 Jul 2007 23:58:34.0025 (UTC) FILETIME=[623BC190:01C7C8CE] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 17 Jul 2007, Jeremy Katz wrote: > On Tue, 17 Jul 2007, Thomas Gleixner wrote: > >> With 2.6.14 or with current mainline ? > > I haven't been keeping notes quite as studiously as I should have been, but > this just occurred with 2.6.22.1 + the hrt6 patch + your proposed fix: Scratch that. I had infrastructure problems, and ended up using the wrong build. This is with the patch (and 2.6.22.1 and hrt6): ------------[ cut here ]------------ Kernel BUG at c0125adb [verbose debug info unavailable] invalid opcode: 0000 [#1] SMP Modules linked in: CPU: 3 EIP: 0060:[] Not tainted VLI EFLAGS: 00010246 (2.6.22.1-WR1.4aq_cgl #2) EIP is at sigqueue_free+0x23/0x72 eax: 00000000 ebx: f6eaf1a8 ecx: f6d4b888 edx: 00000202 esi: f73e2ba8 edi: 00000000 ebp: f7c7bf8c esp: f7c7bf84 ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068 Process hrtm_test (pid: 15340, ti=f7c7b000 task=f6c0f030 task.ti=f7c7b000) Stack: 00000202 f73e2ba8 f7c7bf9c c012c941 f73e2ba8 000002fb f7c7bfb0 c012d1c0 00000286 000002fb 00000000 f7c7b000 c01027ca 000002fb 466afff4 08064190 00000000 00000000 ae8d43c8 00000107 ffff007b c010007b 00000000 00000107 Call Trace: [] show_trace_log_lvl+0x1a/0x30 [] show_stack_log_lvl+0x8d/0xaa [] show_registers+0x1cd/0x2cb [] die+0x113/0x207 [] do_trap+0x8f/0xc6 [] do_invalid_op+0x88/0x92 [] error_code+0x72/0x78 [] release_posix_timer+0x1b/0x7a [] sys_timer_delete+0xd7/0x10c [] syscall_call+0x7/0xb ======================= Code: 74 04 83 48 08 01 5d c3 55 89 e5 56 53 89 c3 8b 40 08 a8 01 74 15 39 1b 75 15 83 e0 fe 89 43 08 89 d8 e8 1d ec ff ff 5b 5e 5d c3 <0f> 0b eb fe 64 a1 00 c0 4a c0 8b b0 50 04 00 00 b8 00 1e 46 c0