From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759977AbYHDGHo (ORCPT ); Mon, 4 Aug 2008 02:07:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753901AbYHDGHh (ORCPT ); Mon, 4 Aug 2008 02:07:37 -0400 Received: from gw.goop.org ([64.81.55.164]:56522 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753688AbYHDGHg (ORCPT ); Mon, 4 Aug 2008 02:07:36 -0400 Message-ID: <48969CA1.9010508@goop.org> Date: Sun, 03 Aug 2008 23:07:29 -0700 From: Jeremy Fitzhardinge User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: Markus Armbruster CC: Jaya Kumar , Linux Kernel Mailing List , Mark McLoughlin Subject: 2.6.27-rc1 xen pvfb regression X-Enigmail-Version: 0.95.6 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When I boot 2.6.27-rc1 with the Xen pvfb driver, I see this when X starts: ------------[ cut here ]------------ WARNING: at /home/jeremy/hg/xen/paravirt/linux/fs/buffer.c:711 __set_page_dirty+0x7e/0x113() Modules linked in: xen_fbfront fb fb_sys_fops sysimgblt sysfillrect xen_netfront xen_kbdfront syscopyarea xen_blkfront Pid: 1227, comm: Xorg Not tainted 2.6.27-rc1-tip-dirty #306 Call Trace: [] warn_on_slowpath+0x5d/0x84 [] ? enqueue_hrtimer+0xdf/0xed [] ? _spin_unlock_irqrestore+0x1d/0x21 [] ? hrtimer_start+0x118/0x13a [] ? _spin_lock_irqsave+0x2a/0x33 [] ? lock_timer_base+0x2b/0x4f [] ? _spin_unlock_irqrestore+0x1d/0x21 [] __set_page_dirty+0x7e/0x113 [] __set_page_dirty_buffers+0x84/0x89 [] set_page_dirty+0x46/0xb2 [] set_page_dirty_balance+0x17/0x4d [] __do_fault+0x494/0x4ae [] handle_mm_fault+0x4a1/0x967 [] ? _spin_unlock_irqrestore+0x1d/0x21 [] do_page_fault+0x5d0/0x9fa [] ? sys_setitimer+0x93/0xa3 [] error_exit+0x0/0x70 ---[ end trace 68d3ab49fcc5748b ]--- ------------[ cut here ]------------ kernel BUG at /home/jeremy/hg/xen/paravirt/linux/lib/radix-tree.c:473! invalid opcode: 0000 [1] SMP CPU 0 Modules linked in: xen_fbfront fb fb_sys_fops sysimgblt sysfillrect xen_netfront xen_kbdfront syscopyarea xen_blkfront Pid: 1227, comm: Xorg Tainted: G W 2.6.27-rc1-tip-dirty #306 RIP: e030:[] [] radix_tree_tag_set+0x17/0x9b RSP: e02b:ffff88000cef3cc0 EFLAGS: 00010002 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88000e555858 RBP: ffff88000cef3cc8 R08: a000000000000000 R09: 0000000000000000 R10: 00007fb12cb29c80 R11: ffff880001432050 R12: ffff88000e555850 R13: 0000000000000001 R14: ffff8800013d82f8 R15: ffff88000e859040 FS: 00007fb12e61a780(0000) GS:ffffffff80496000(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007fb12cb2a000 CR3: 000000000e68e000 CR4: 0000000000002620 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process Xorg (pid: 1227, threadinfo ffff88000cef2000, task ffff88000ceb3bd0) Stack: ffff880001432050 ffff88000cef3cf8 ffffffff802af5ce ffff88000cef3ce8 ffff880001432050 ffff88000e555850 ffff880001432050 ffff88000cef3d18 ffffffff802b1806 ffff880001432050 0000000000000001 ffff88000cef3d48 Call Trace: [] __set_page_dirty+0xe3/0x113 [] __set_page_dirty_buffers+0x84/0x89 [] set_page_dirty+0x46/0xb2 [] set_page_dirty_balance+0x17/0x4d [] __do_fault+0x494/0x4ae [] handle_mm_fault+0x4a1/0x967 [] ? _spin_unlock_irqrestore+0x1d/0x21 [] do_page_fault+0x5d0/0x9fa [] ? sys_setitimer+0x93/0xa3 [] error_exit+0x0/0x70 Code: ff eb 02 31 c0 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f c9 c3 55 44 8b 0f 48 89 e5 44 89 c8 53 48 3b 34 c5 a0 7e 49 80 89 d3 76 04 <0f> 0b eb fe 41 6b c1 06 4c 8b 57 08 44 8d 58 fa 49 83 e2 fe 89 RIP [] radix_tree_tag_set+0x17/0x9b RSP ---[ end trace 68d3ab49fcc5748b ]--- And the system is dead. Haven't investigated at all. J