On Fri, Apr 15, 2011 at 11:21:40AM -0300, Gerd Jakobovitsch wrote:
> Reporting a new bug that appeared during stress tests. The scenario is
> the same as reported below, with patches applied:
>
Hello,
Can you clarify which exact kernel version/changeset you used for this test?
Does your kernel include the latest bugfix (from 3 days ago)?
http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=commit;h=ae333e97552c81ab10395ad1ffc6d6daaadb144a
changelog:
http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/stable-2.6.32.x
-- Pasi
> On 04/14/2011 10:15 AM, Konrad Rzeszutek Wilk wrote:
>> On Wed, Apr 13, 2011 at 06:02:13PM -0300, Gerd Jakobovitsch wrote:
>>> I'm trying to run several VMs (linux hvm, with tapdisk:aio disks at
>>> a storage over nfs) on a CentOS system, using the up-to-date version
>>> of xen 4.0 / kernel pvops 2.6.32.x stable. With a configuration
>>> without (most of) debug activated, I can start several instances -
>>> I'm running 7 of them - but shortly afterwards the system stops
>>> responding. I can't find any information on this.
>> First time I see it.
>>> Activating several debug configuration items, among them
>>> DEBUG_PAGEALLOC, I get an exception as soon as I try to start up a
>>> VM. The system reboots.
>>>
> With the debug information still set, I'm running 42 VMs - mixed Linux
> (several distros) and Windows, most of them running benchmarks for CPU
> and disk usage. After roughly 15 hours, a bug message appeared at dmesg.
> It affected xm commands - it seems to be related to a specific VM - but
> xl commands still work. VMs are running.
>
> # xm list
> Error: (5, 'Input/output error, while reading
> /local/domain/33/console/vnc-port')
> Usage: xm list [options] [Domain, ...]
>
> After killing the VM that reported error, xm commands are working again.
>
> The BUG message at dmesg:
>
> [66007.135552] BUG: unable to handle kernel paging request at
> ffff8800004ca458
> [66007.135567] IP: [<ffffffff8100d4ae>] xen_set_pte+0x3e/0x4b
> [66007.135580] PGD 1002067 PUD 1006067 PMD 2d78067 PTE 100000004ca025
> [66007.135675] Oops: 0003 [#1] SMP DEBUG_PAGEALLOC
> [66007.135686] last sysfs file:
> /sys/class/net/virtbr/bridge/topology_change_detected
> [66007.135693] CPU 4
> [66007.135698] Modules linked in: arptable_filter arp_tables bridge stp
> bonding bnx2i libiscsi scsi_transport_iscsi cnic uio bnx2 megaraid_sas
> [66007.135729] Pid: 683, comm: pageattr-test Not tainted 2.6.32.36 #7
> PowerEdge M610
> [66007.135735] RIP: e030:[<ffffffff8100d4ae>] [<ffffffff8100d4ae>]
> xen_set_pte+0x3e/0x4b
> [66007.135746] RSP: e02b:ffff88007c8edbb0 EFLAGS: 00010202
> [66007.135751] RAX: 0000000000e32cb6 RBX: 0000000000e32cb6 RCX:
> 0000000000000001
> [66007.135757] RDX: 0000000000000000 RSI: 8010000800569267 RDI:
> ffff8800004ca458
> [66007.135764] RBP: ffff88007c8edbd0 R08: 0000000000000001 R09:
> 0000000000000000
> [66007.135770] R10: ffffffff818385f8 R11: ffffffff818385e0 R12:
> 8010000800569267
> [66007.135776] R13: ffff8800004ca458 R14: 8010000416569067 R15:
> 8010000800569267
> [66007.135786] FS: 00007f0eeede66e0(0000) GS:ffff88002813f000(0000)
> knlGS:0000000000000000
> [66007.135792] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b
> [66007.135797] CR2: ffff8800004ca458 CR3: 000000007b663000 CR4:
> 0000000000002660
> [66007.135804] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000
> [66007.135810] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
> 0000000000000400
> [66007.135816] Process pageattr-test (pid: 683, threadinfo
> ffff88007c8ec000, task ffff88007e4ce480)
> [66007.135822] Stack:
> [66007.135825] 0000000000000000 8010000004569067 0000000000004569
> ffff88007c8edd20
> [66007.135835] <0> ffff88007c8edbe0 ffffffff81034740 ffff88007c8edbf0
> ffffffff8103474d
> [66007.135848] <0> ffff88007c8edcf0 ffffffff81034e77 000000017c8edc40
> ffffffff818385e0
> [66007.135860] Call Trace:
> [66007.135868] [<ffffffff81034740>] set_pte+0x17/0x1b
> [66007.135875] [<ffffffff8103474d>] set_pte_atomic+0x9/0xb
> [66007.135882] [<ffffffff81034e77>] __change_page_attr_set_clr+0x186/0x82d
> [66007.135936] [<ffffffff8124f4a0>] ? _raw_spin_unlock+0xab/0xb1
> [66007.135951] [<ffffffff8157641f>] ? _spin_unlock+0x26/0x2a
> [66007.135961] [<ffffffff810e587d>] ? vm_unmap_aliases+0x151/0x160
> [66007.135969] [<ffffffff81035695>] change_page_attr_set_clr+0x177/0x360
> [66007.135976] [<ffffffff8103597a>] change_page_attr_set+0x27/0x29
> [66007.135983] [<ffffffff810348e2>] ? pte_flags+0x9/0x18
> [66007.135990] [<ffffffff81035c01>] do_pageattr_test+0x285/0x4b1
> [66007.135998] [<ffffffff8103597c>] ? do_pageattr_test+0x0/0x4b1
> [66007.136097] [<ffffffff8106a9c3>] kthread+0x69/0x71
> [66007.136105] [<ffffffff81013daa>] child_rip+0xa/0x20
> [66007.136112] [<ffffffff81012ee6>] ? int_ret_from_sys_call+0x7/0x1b
> [66007.136119] [<ffffffff81013726>] ? retint_restore_args+0x5/0x6
> [66007.136127] [<ffffffff81013da0>] ? child_rip+0x0/0x20
> [66007.136131] Code: e8 3c ff ff ff ff 05 b6 5c 94 00 e8 31 ff ff ff 8b
> 1d b3 5c 94 00 e8 a2 23 02 00 ff c8 0f 94 c0 0f b6 c0 01 d8 89 05 9e 5c
> 94 00 <4d> 89 65 00 41 59 5b 41 5c 41 5d c9 c3 55 48 89 e5 53 89 fb 48
> [66007.136273] RIP [<ffffffff8100d4ae>] xen_set_pte+0x3e/0x4b
> [66007.136281] RSP <ffff88007c8edbb0>
> [66007.136285] CR2: ffff8800004ca458
> [66007.136574] ---[ end trace 4e200a271895cc90 ]---
>
> Attached errors registered in xm dmesg and xend.log.
> [2011-04-15 05:32:06 4415] ERROR (xmlrpclib2:181) Internal error handling
> xend.domain
> Traceback (most recent call last):
> File "/usr/lib64/python2.4/site-packages/xen/util/xmlrpclib2.py", line 134,
> in _marshaled_dispatch
> response = self._dispatch(method, params)
> File "/usr/lib64/python2.4/SimpleXMLRPCServer.py", line 406, in _dispatch
> return func(*params)
> File "/usr/lib64/python2.4/site-packages/xen/xend/server/XMLRPCServer.py",
> line 58, in domain
> info = lookup(domid)
> File "/usr/lib64/python2.4/site-packages/xen/xend/server/XMLRPCServer.py",
> line 50, in lookup
> info = XendDomain.instance().domain_lookup(domid)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 543,
> in domain_lookup
> self._refresh(refresh_shutdown = False)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 417,
> in _refresh
> self._refreshTxn(txn, refresh_shutdown)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 430,
> in _refreshTxn
> self.domains[domid].update(dom, refresh_shutdown, transaction)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line
> 3523, in update
> self._update_consoles(transaction)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line
> 1656, in _update_consoles
> vnc_port = self.readDomTxn(transaction, 'console/vnc-port')
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line
> 1720, in readDomTxn
> return transaction.read(*paths)
> File "/usr/lib64/python2.4/site-packages/xen/xend/xenstore/xstransact.py",
> line 72, in read
> return self._read(args[0])
> File "/usr/lib64/python2.4/site-packages/xen/xend/xenstore/xstransact.py",
> line 59, in _read
> '%s, while reading %s' % (ex.args[1], path))
> RuntimeError: (5, 'Input/output error, while reading
> /local/domain/33/console/vnc-port')
> [2011-04-15 05:32:12 4415] ERROR (xmlrpclib2:181) Internal error handling
> xend.domain
> Traceback (most recent call last):
> File "/usr/lib64/python2.4/site-packages/xen/util/xmlrpclib2.py", line 134,
> in _marshaled_dispatch
> response = self._dispatch(method, params)
> File "/usr/lib64/python2.4/SimpleXMLRPCServer.py", line 406, in _dispatch
> return func(*params)
> File "/usr/lib64/python2.4/site-packages/xen/xend/server/XMLRPCServer.py",
> line 58, in domain
> info = lookup(domid)
> File "/usr/lib64/python2.4/site-packages/xen/xend/server/XMLRPCServer.py",
> line 50, in lookup
> info = XendDomain.instance().domain_lookup(domid)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 543,
> in domain_lookup
> self._refresh(refresh_shutdown = False)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 417,
> in _refresh
> self._refreshTxn(txn, refresh_shutdown)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 430,
> in _refreshTxn
> self.domains[domid].update(dom, refresh_shutdown, transaction)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line
> 3523, in update
> self._update_consoles(transaction)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line
> 1656, in _update_consoles
> vnc_port = self.readDomTxn(transaction, 'console/vnc-port')
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line
> 1720, in readDomTxn
> return transaction.read(*paths)
> File "/usr/lib64/python2.4/site-packages/xen/xend/xenstore/xstransact.py",
> line 72, in read
> return self._read(args[0])
> File "/usr/lib64/python2.4/site-packages/xen/xend/xenstore/xstransact.py",
> line 59, in _read
> '%s, while reading %s' % (ex.args[1], path))
> RuntimeError: (5, 'Input/output error, while reading
> /local/domain/33/console/vnc-port')
> [2011-04-15 05:32:17 4415] ERROR (xmlrpclib2:181) Internal error handling
> xend.domain
> Traceback (most recent call last):
> File "/usr/lib64/python2.4/site-packages/xen/util/xmlrpclib2.py", line 134,
> in _marshaled_dispatch
> response = self._dispatch(method, params)
> File "/usr/lib64/python2.4/SimpleXMLRPCServer.py", line 406, in _dispatch
> return func(*params)
> File "/usr/lib64/python2.4/site-packages/xen/xend/server/XMLRPCServer.py",
> line 58, in domain
> info = lookup(domid)
> File "/usr/lib64/python2.4/site-packages/xen/xend/server/XMLRPCServer.py",
> line 50, in lookup
> info = XendDomain.instance().domain_lookup(domid)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 543,
> in domain_lookup
> self._refresh(refresh_shutdown = False)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 417,
> in _refresh
> self._refreshTxn(txn, refresh_shutdown)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 430,
> in _refreshTxn
> self.domains[domid].update(dom, refresh_shutdown, transaction)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line
> 3523, in update
> self._update_consoles(transaction)
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line
> 1656, in _update_consoles
> vnc_port = self.readDomTxn(transaction, 'console/vnc-port')
> File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line
> 1720, in readDomTxn
> return transaction.read(*paths)
> File "/usr/lib64/python2.4/site-packages/xen/xend/xenstore/xstransact.py",
> line 72, in read
> return self._read(args[0])
> File "/usr/lib64/python2.4/site-packages/xen/xend/xenstore/xstransact.py",
> line 59, in _read
> '%s, while reading %s' % (ex.args[1], path))
>
> (XEN) HVM43: Booting from 0000:7c00
> (XEN) HVM44: Press F12 for boot menu.
> (XEN) HVM44:
> (XEN) HVM44: Booting from Hard Disk...
> (XEN) HVM44: Booting from 0000:7c00
> (XEN) HVM44: int13_harddisk: function 42. LBA out of range
> (XEN) stdvga.c:151:d43 leaving stdvga
> (XEN) stdvga.c:147:d43 entering stdvga and caching modes
> (XEN) irq.c:243: Dom43 PCI link 0 changed 5 -> 0
> (XEN) irq.c:243: Dom43 PCI link 1 changed 10 -> 0
> (XEN) irq.c:243: Dom43 PCI link 2 changed 11 -> 0
> (XEN) irq.c:243: Dom43 PCI link 3 changed 5 -> 0
> (XEN) stdvga.c:151:d43 leaving stdvga
> (XEN) stdvga.c:151:d42 leaving stdvga
> (XEN) mm.c:3617:d0 PTE entry 81244b for address ffff88007caa0000 doesn't
> match frame 621c4b
> (XEN) mm.c:3617:d0 PTE entry 812bed for address ffff88007caa1000 doesn't
> match frame 6217ed
> (XEN) mm.c:3617:d0 PTE entry 812426 for address ffff88007caa2000 doesn't
> match frame 621c26
> (XEN) mm.c:3617:d0 PTE entry 812590 for address ffff88007caa3000 doesn't
> match frame 621d90
> (XEN) mm.c:3617:d0 PTE entry 812591 for address ffff88007caa4000 doesn't
> match frame 621d91
> (XEN) mm.c:3617:d0 PTE entry 812492 for address ffff88007caa5000 doesn't
> match frame 621c92
> (XEN) mm.c:3617:d0 PTE entry 812493 for address ffff88007caa6000 doesn't
> match frame 621c93
> (XEN) mm.c:3617:d0 PTE entry 8124ca for address ffff88007caa7000 doesn't
> match frame 621cca
> (XEN) mm.c:3617:d0 PTE entry 8124cb for address ffff88007caa8000 doesn't
> match frame 621ccb
> (XEN) mm.c:3617:d0 PTE entry 80e8b0 for address ffff88007caa9000 doesn't
> match frame 6258b0
> (XEN) mm.c:3617:d0 PTE entry 80e8b1 for address ffff88007caaa000 doesn't
> match frame 6258b1
> (XEN) mm.c:3617:d0 PTE entry 803fe2 for address ffff88007caab000 doesn't
> match frame 5cfde2
> (XEN) mm.c:3617:d0 PTE entry 80b3fd for address ffff88007ca99000 doesn't
> match frame 46b1fd
> (XEN) mm.c:3617:d0 PTE entry 80b3fe for address ffff88007ca9a000 doesn't
> match frame 46b1fe
> (XEN) mm.c:3617:d0 PTE entry 80ac10 for address ffff88007ca9b000 doesn't
> match frame 46b610
> (XEN) mm.c:3617:d0 PTE entry 80c01e for address ffff88007ca9c000 doesn't
> match frame 46a21e
> (XEN) mm.c:3617:d0 PTE entry 80ab16 for address ffff88007ca9d000 doesn't
> match frame 46b916
> (XEN) mm.c:3617:d0 PTE entry 80b0f6 for address ffff88007ca9e000 doesn't
> match frame 46b2f6
> (XEN) mm.c:3617:d0 PTE entry 809c8c for address ffff88007ca9f000 doesn't
> match frame 46c68c
> (XEN) mm.c:3617:d0 PTE entry 8017e0 for address ffff88007cb9f000 doesn't
> match frame 5b19e0
> (XEN) mm.c:3617:d0 PTE entry 8017e1 for address ffff88007cba0000 doesn't
> match frame 5b19e1
> (XEN) mm.c:3617:d0 PTE entry 801fc4 for address ffff88007cba1000 doesn't
> match frame 5b11c4
> (XEN) mm.c:3617:d0 PTE entry 801fc5 for address ffff88007cba2000 doesn't
> match frame 5b11c5
> (XEN) mm.c:3617:d0 PTE entry 801f2a for address ffff88007cba3000 doesn't
> match frame 5b112a
> (XEN) mm.c:3617:d0 PTE entry 801f2b for address ffff88007cba4000 doesn't
> match frame 5b112b
> (XEN) mm.c:3617:d0 PTE entry 801ee8 for address ffff88007cba5000 doesn't
> match frame 5b10e8
> (XEN) mm.c:3617:d0 PTE entry 801ee9 for address ffff88007cba6000 doesn't
> match frame 5b10e9
> (XEN) mm.c:3617:d0 PTE entry 803fde for address ffff88007cba7000 doesn't
> match frame 5af1de
> (XEN) mm.c:3617:d0 PTE entry 8120ec for address ffff88007cb9e000 doesn't
> match frame 9660ec
> (XEN) mm.c:3617:d0 PTE entry 8120ed for address ffff88007cb9f000 doesn't
> match frame 9660ed
> (XEN) mm.c:3617:d0 PTE entry 810e0a for address ffff88007cba0000 doesn't
> match frame 96720a
> (XEN) mm.c:3617:d0 PTE entry 810e0b for address ffff88007cba1000 doesn't
> match frame 96720b
> (XEN) mm.c:3617:d0 PTE entry 81080e for address ffff88007cba2000 doesn't
> match frame 96780e
> (XEN) mm.c:3617:d0 PTE entry 81080f for address ffff88007cba3000 doesn't
> match frame 96780f
> (XEN) mm.c:3617:d0 PTE entry 80ef3e for address ffff88007cba4000 doesn't
> match frame 96933e
> (XEN) mm.c:3617:d0 PTE entry 802fd7 for address ffff88007c433000 doesn't
> match frame 2111d7
> (XEN) mm.c:3617:d0 PTE entry 805131 for address ffff88007c434000 doesn't
> match frame 20ef31
> (XEN) mm.c:3617:d0 PTE entry 80c1ea for address ffff88007c435000 doesn't
> match frame 207fea
> (XEN) mm.c:3617:d0 PTE entry 814ae9 for address ffff88007c9b0000 doesn't
> match frame 8866e9
> (XEN) mm.c:3617:d0 PTE entry 8113b9 for address ffff88007ca20000 doesn't
> match frame 9277b9
> (XEN) mm.c:3617:d0 PTE entry 808ab2 for address ffff88007ca21000 doesn't
> match frame 92feb2
> (XEN) mm.c:3617:d0 PTE entry 803bb3 for address ffff88007ca22000 doesn't
> match frame 934fb3
> (XEN) mm.c:3617:d0 PTE entry 814747 for address ffff88007ca23000 doesn't
> match frame 924347
> (XEN) mm.c:3617:d0 PTE entry 819873 for address ffff88007ca24000 doesn't
> match frame 91f073
> (XEN) mm.c:3617:d0 PTE entry 80302c for address ffff88007ca25000 doesn't
> match frame 93582c
> (XEN) mm.c:3617:d0 PTE entry 81b75c for address ffff88007ca26000 doesn't
> match frame 91d35c
> (XEN) mm.c:3617:d0 PTE entry c5fd0b for address ffff88007ca86000 doesn't
> match frame 95830b
> (XEN) mm.c:3617:d0 PTE entry 81a093 for address ffff88007ca87000 doesn't
> match frame 9bde93
> (XEN) mm.c:3617:d0 PTE entry 815f11 for address ffff88007ca88000 doesn't
> match frame 942111
> (XEN) mm.c:3617:d0 PTE entry 815bc5 for address ffff88007ca89000 doesn't
> match frame 9425c5
> (XEN) mm.c:3617:d0 PTE entry 816875 for address ffff88007cb9b000 doesn't
> match frame 59c675
> (XEN) mm.c:3617:d0 PTE entry 8158a8 for address ffff88007cb9c000 doesn't
> match frame 59d6a8
> (XEN) mm.c:3617:d0 PTE entry 82fa1c for address ffff88007c926000 doesn't
> match frame 5e321c
> (XEN) mm.c:3617:d0 PTE entry 82655e for address ffff88007c927000 doesn't
> match frame 5ec95e
> (XEN) mm.c:3617:d0 PTE entry c5ce72 for address ffff88007c926000 doesn't
> match frame 95b072
> (XEN) mm.c:3617:d0 PTE entry c5cea9 for address ffff88007c927000 doesn't
> match frame 95b0a9
> (XEN) mm.c:2399:d0 Bad type (saw 1c00000000000002 != exp 7000000000000000)
> for mfn 800569 (pfn 4569)
> (XEN) mm.c:878:d0 Error getting mfn 800569 (pfn 4569) from L1 entry
> 8010000800569267 for l1e_owner=0, pg_owner=0
> (XEN) mm.c:4664:d0 ptwr_emulate: could not get_page_from_l1e()
> (XEN) mm.c:3617:d0 PTE entry 80e284 for address ffff88007ca89000 doesn't
> match frame 468084
> (XEN) mm.c:3617:d0 PTE entry 817918 for address ffff88007ca8a000 doesn't
> match frame 47f118
> (XEN) common.c:3722:d0 tracking VRAM f0000 - f0160
> (XEN) common.c:3722:d0 tracking VRAM f0000 - f0160
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
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