From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: 2.6.37-rc1 mainline domU - BUG: unable to handle kernel paging request Date: Wed, 10 Nov 2010 17:39:30 -0500 Message-ID: <20101110223930.GA2889@dumpdata.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Bruce Edge Cc: Jeremy Fitzhardinge , xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On Wed, Nov 10, 2010 at 02:15:25PM -0800, Bruce Edge wrote: > This is a mainline 2.6.37-rc1 pvops domU on top of a xen-unstable build > 22241 and xen/stable-2.6.32.x 2.6.32.24 pvops dom0. I need the full output. > > The domU console output hung up prior to spitting out a prompt post root > login. I logged into the domU via ssh and ran an 'ls' of an NFS mounted dir > and > this immediately came out on the domU console: > > [ 480.467525] BUG: unable to handle kernel paging request at > ffff880077e9f030 > [ 480.467547] IP: [] ptep_set_access_flags+0x27/0x4d > [ 480.467564] PGD 1a04067 PUD 3dd7067 PMD 3f97067 PTE 8010000077e9f065 > [ 480.467587] Oops: 0003 [#1] SMP > [ 480.467601] last sysfs file: /sys/kernel/uevent_seqnum > [ 480.467611] CPU 3 > [ 480.467616] Modules linked in: ext4 mbcache jbd2 crc16 xen_fbfront > fb_sys_fops sysimgblt sysfillrect syscopyarea xen_kbdfront xen_netfront > xen_blkfront > [ 480.467676] > [ 480.467684] Pid: 3957, comm: zsh Not tainted > 2.6.37-rc1-kernel.org-domu-6.0.bedge-debug #1 / > [ 480.467695] RIP: e030:[] [] > ptep_set_access_flags+0x27/0x4d > [ 480.467710] RSP: e02b:ffff880077ebfbd8 EFLAGS: 00010202 > [ 480.467719] RAX: 800000004d686167 RBX: ffff8800763ddb80 RCX: > 800000004d686167 > [ 480.467729] RDX: ffff880077e9f030 RSI: 00007f5cb26069d0 RDI: > ffff8800763ddb80 > [ 480.467739] RBP: ffff880077ebfc08 R08: 0000000000000001 R09: > ffffea0001a3b2d8 > [ 480.467748] R10: 0000000000000100 R11: 0000000000000000 R12: > 00007f5cb26069d0 > [ 480.467759] R13: 0000000000000001 R14: 0000000000000000 R15: > ffff8800763ddb80 > [ 480.467772] FS: 00007f5cb2606700(0000) GS:ffff88007ff94000(0000) > knlGS:0000000000000000 > [ 480.467783] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b > [ 480.467792] CR2: ffff880077e9f030 CR3: 0000000077dbc000 CR4: > 0000000000002660 > [ 480.467802] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > [ 480.467812] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > 0000000000000400 > [ 480.467822] Process zsh (pid: 3957, threadinfo ffff880077ebe000, task > ffff880078b80000) > [ 480.467832] Stack: > [ 480.467838] 0000000000000100 ffffea0001a3b2d8 7000000000000000 > 0000000000000000 > [ 480.467862] ffff880077e9f030 ffffea0001a3b2d8 ffff880077ebfca8 > ffffffff810e2200 > [ 480.467886] ffff880077ebfc38 ffffffff81007c09 ffffea0001a3b2d8 > 0000000000000001 > [ 480.467910] Call Trace: > [ 480.467921] [] do_wp_page+0x2d8/0x6be > [ 480.467934] [] ? __spin_time_accum+0x21/0x37 > [ 480.467946] [] ? __xen_spin_lock+0xb7/0xcd > [ 480.467958] [] handle_mm_fault+0x87a/0x8c1 > [ 480.467972] [] do_page_fault+0x374/0x396 > [ 480.467984] [] ? xen_force_evtchn_callback+0xd/0xf > [ 480.467996] [] ? xen_force_evtchn_callback+0xd/0xf > [ 480.468009] [] ? check_events+0x12/0x20 > [ 480.468020] [] ? xen_restore_fl_direct_end+0x0/0x1 > [ 480.468034] [] ? __call_rcu+0x123/0x12c > [ 480.468045] [] ? xen_force_evtchn_callback+0xd/0xf > [ 480.468059] [] ? check_events+0x12/0x20 > [ 480.468072] [] page_fault+0x25/0x30 > [ 480.468085] [] ? __put_user_4+0x1d/0x30 > [ 480.468096] [] ? schedule_tail+0x5c/0x60 > [ 480.468108] [] ret_from_fork+0x13/0x80 > [ 480.468116] Code: 41 5d c9 c3 55 48 89 e5 41 55 45 31 ed 41 54 49 89 f4 > 53 48 89 fb 48 83 ec 18 48 39 0a 41 0f 95 c5 45 85 c0 74 1d 45 85 ed 74 18 > <48> 89 0a 48 8b 3f 0f 1f 80 00 00 00 00 4c 89 e6 48 89 df e8 b2 > [ 480.468323] RIP [] ptep_set_access_flags+0x27/0x4d > [ 480.468323] RSP > [ 480.468323] CR2: ffff880077e9f030 > [ 480.468323] ---[ end trace 6d1623321ecd50ac ]--- > > The domU config is attached as config.2.6.37_domU_debug > > > -Bruce