From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Christopher S. Aker" Subject: Re: kernel BUG at mm/swapfile.c:2524 Date: Thu, 21 Apr 2011 10:57:58 -0400 Message-ID: <4DB045F6.9080301@theshore.net> References: <20110407135009.GA7258@dumpdata.com> <3FC940A3-FD29-40E9-8F09-E43D77B6E6F2@linode.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <3FC940A3-FD29-40E9-8F09-E43D77B6E6F2@linode.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com Cc: Konrad Rzeszutek Wilk , Peter Sandin List-Id: xen-devel@lists.xenproject.org We're still getting reports of this occurring with 2.6.38 domU. Here's a fresh one: ------------[ cut here ]------------ kernel BUG at mm/swapfile.c:2524! invalid opcode: 0000 [#1] SMP last sysfs file: /sys/kernel/uevent_seqnum Modules linked in: Pid: 12589, comm: apache2 Not tainted 2.6.38-linode31 #1 EIP: 0061:[] EFLAGS: 00210246 CPU: 0 EIP is at swap_count_continued+0x176/0x180 EAX: f57ba6c3 EBX: ed3af500 ECX: f57ba000 EDX: 00000000 ESI: ed3c5280 EDI: 00000080 EBP: 000006c3 ESP: d4bcde30 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0069 Process apache2 (pid: 12589, ti=d4bcc000 task=ec9c17d0 task.ti=d4bcc000) Stack: ec03c4c0 000166c3 00000000 00000000 c01a37b1 b7d63000 ec03c4c0 000166c3 00000000 c01a5b67 b7d63000 b7e00000 eae67b18 c0196296 6bb30067 80000006 c01039c6 0000000c 00000000 00000000 002cd860 0006c92f d0374df0 d17b3040 Call Trace: [] ? swap_entry_free+0xf1/0x120 [] ? free_swap_and_cache+0x27/0xd0 [] ? unmap_vmas+0x3d6/0x820 [] ? __raw_callee_save_xen_make_pte+0x6/0x8 [] ? exit_mmap+0x91/0x140 [] ? mmput+0x2b/0xc0 [] ? exit_mm+0xe7/0x120 [] ? _raw_spin_lock_irq+0x10/0x20 [] ? do_exit+0x10a/0x6e0 [] ? do_group_exit+0x3c/0xa0 [] ? sys_exit_group+0x11/0x20 [] ? syscall_call+0x7/0xb [] ? sctp_sockaddr_af+0x20/0x90 Code: ff 89 d8 e8 cd f7 f7 ff 01 e8 8d 76 00 c6 00 00 ba 01 00 00 00 eb b2 89 f8 3c 80 0f 94 c0 e9 b9 fe ff ff 0f 0b e b fe 0f 0b eb fe <0f> 0b eb fe 0f 0b eb fe 66 90 83 ec 10 89 1c 24 89 c3 89 74 24 EIP: [] swap_count_continued+0x176/0x180 SS:ESP 0069:d4bcde30 ---[ end trace f3fdefcfb4d8b5dc ]--- Fixing recursive fault but reboot is needed! BUG: scheduling while atomic: apache2/12589/0x00000001 Modules linked in: Pid: 12589, comm: apache2 Tainted: G D 2.6.38-linode31 #1 Call Trace: [] ? schedule+0x6a9/0x8b0 [] ? xen_restore_fl_direct_end+0x0/0x1 [] ? _raw_spin_unlock_irqrestore+0x11/0x20 [] ? console_unlock+0x1c3/0x200 [] ? vprintk+0x17f/0x3c0 [] ? do_exit+0x5bf/0x6e0 [] ? _raw_spin_lock_irqsave+0x27/0x40 [] ? _raw_spin_unlock_irqrestore+0x11/0x20 [] ? kmsg_dump+0x36/0xf0 [] ? do_invalid_op+0x0/0x90 [] ? do_invalid_op+0x0/0x90 [] ? oops_end+0x71/0xa0 [] ? do_invalid_op+0x7f/0x90 [] ? swap_count_continued+0x176/0x180 [] ? handle_IRQ_event+0x55/0xc0 [] ? xen_force_evtchn_callback+0x17/0x30 [] ? __do_softirq+0x0/0x130 [] ? check_events+0x8/0xc [] ? xen_restore_fl_direct_end+0x0/0x1 [] ? do_softirq+0x42/0xb0 [] ? error_code+0x5a/0x60 [] ? __change_page_attr_set_clr+0xa2b/0xb40 [] ? do_invalid_op+0x0/0x90 [] ? swap_count_continued+0x176/0x180 [] ? swap_entry_free+0xf1/0x120 [] ? free_swap_and_cache+0x27/0xd0 [] ? unmap_vmas+0x3d6/0x820 [] ? __raw_callee_save_xen_make_pte+0x6/0x8 [] ? exit_mmap+0x91/0x140 [] ? mmput+0x2b/0xc0 [] ? exit_mm+0xe7/0x120 [] ? _raw_spin_lock_irq+0x10/0x20 [] ? do_exit+0x10a/0x6e0 [] ? do_group_exit+0x3c/0xa0 [] ? sys_exit_group+0x11/0x20 [] ? syscall_call+0x7/0xb [] ? sctp_sockaddr_af+0x20/0x90 -Chris