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Re: [Xen-users] rebased opensuse 2.6.31 xen patches

from [Boris Derzhavets] [Permanent Link][Original]
To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-users] rebased opensuse 2.6.31 xen patches
From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Date: Tue, 3 Nov 2009 22:05:57 -0800 (PST)
Cc: Andrew Lyon <andrew.lyon@xxxxxxxxx>, xen-users List <xen-users@xxxxxxxxxxxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx>
Delivery-date: Tue, 03 Nov 2009 22:07:13 -0800
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I've attempted to install F12 PV DomU via local Apache with 2.6.31.5 under Xen 3.4.2-pre.
During install screen started flicking until i rebooted the host.
I would say problem with video output.

Boris.

--- On Tue, 11/3/09, Pasi Kärkkäinen <pasik@xxxxxx> wrote:

From: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-users] rebased opensuse 2.6.31 xen patches
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
Cc: "Jan Beulich" <JBeulich@xxxxxxxxxx>, "Andrew Lyon" <andrew.lyon@xxxxxxxxx>, "xen-users List" <xen-users@xxxxxxxxxxxxxxxxxxx>
Date: Tuesday, November 3, 2009, 3:27 PM

On Mon, Nov 02, 2009 at 11:18:40PM -0800, Boris Derzhavets wrote:
>    What kind of kernels may be patched via V7 patch sets ?
>    Both 2.6.31.4 &  2.6.31.5 may be compiled and loaded under Xen, but both
>    are unstable at runtime.
>


What kind of (in)stability problems you have?

-- Pasi

>
>    --- On Thu, 10/29/09, Andrew Lyon <andrew.lyon@xxxxxxxxx> wrote:
>
>      From: Andrew Lyon <andrew.lyon@xxxxxxxxx>
>      Subject: Re: [Xen-users] rebased opensuse 2.6.31 xen patches
>      To: "Jan Beulich" <JBeulich@xxxxxxxxxx>
>      Cc: "xen-users List" <xen-users@xxxxxxxxxxxxxxxxxxx>
>      Date: Thursday, October 29, 2009, 11:38 AM
>
>      True, the gentoo ebuild process renames the kernel extraversion, but
>      it is really .31.5:
>
>      optiplex linux-2.6.31-xen-r7# patch -p1 -R -s -i
>      /usr/src/patches.kernel.org/patch-2.6.31.4-5 --dry-run
>      1 out of 2 hunks FAILED -- saving rejects to file Makefile.rej
>
>      In future I will make sure to include the real version number!
>
>      Andy
>
>      On Thu, Oct 29, 2009 at 1:38 PM, Jan Beulich <[1]JBeulich@xxxxxxxxxx>
>      wrote:
>      > But the version embedded in the oops messages doesn't say so...
>      >
>      > Jan
>      >
>      >>>> Andrew Lyon <[2]andrew.lyon@xxxxxxxxx> 29.10.09 13:18 >>>
>      > Yes, I took the xen patches from
>      > kernel-source-2.6.31.5-0.0.4.4b07dce.src.rpm and made sure the vanilla
>      > kernel was patched to .31.5
>      >
>      > Andy
>      >
>      > On Thu, Oct 29, 2009 at 10:05 AM, Jan Beulich <[3]JBeulich@xxxxxxxxxx>
>      wrote:
>      >> Did you try updating to .31.5? There have been quite a few TTY
>      related
>      >> fixes... Jan
>      >>
>      >>>>> Andrew Lyon <[4]andrew.lyon@xxxxxxxxx> 29.10.09 10:06 >>>
>      >> On Wed, Oct 28, 2009 at 7:20 PM, Boris Derzhavets
>      <[5]bderzhavets@xxxxxxxxx>wrote:
>      >>
>      >>> dmesg.log for 2.31.4 ( Andy's V7 patch set applied ) under Xen 3.4.1
>      >>> seems to be clean.
>      >>>
>      >>>
>      >>> Boris.
>      >>>
>      >>> --- On *Mon, 10/26/09, Jan Beulich <[6]JBeulich@xxxxxxxxxx>* wrote:
>      >>>
>      >>
>      >> On my test system all of the 2.6.31 Xen kernels crash after a few
>      minutes,
>      >> here is a example of the crash, the kernel is tainted in this case as
>      I need
>      >> nvidia drivers to get my work done, but it also happens without the
>      nvidia
>      >> kernel module loaded or X running.
>      >>
>      >> Oct 29 08:48:31 ubermicro BUG: unable to handle kernel NULL pointer
>      >> dereference at 0000000000000060
>      >> Oct 29 08:48:31 ubermicro IP: [<ffffffff803de62c>] tty_poll+0x43/0x70
>      >> Oct 29 08:48:31 ubermicro PGD 3d22a4067 PUD 3d20dc067 PMD 0
>      >> Oct 29 08:48:31 ubermicro Oops: 0000 [#1] SMP
>      >> Oct 29 08:48:31 ubermicro last sysfs file:
>      >> /sys/devices/xen-backend/vbd-5-768/statistics/wr_sect
>      >> Oct 29 08:48:31 ubermicro CPU 0
>      >> Oct 29 08:48:31 ubermicro Modules linked in: ipv6 coretemp w83627hf
>      >> w83793 hwmon_vid bnep xen_scsibk rfcomm l2cap hci_uart st nvidia(P)
>      >> snd_hda_codec_realtek btusb snd_hda_intel snd_hda_codec snd_usb_audio
>      >> bluetooth snd_usb_lib snd_pcm snd_timer snd_rawmidi snd_hwdep snd igb
>      >> iTCO_wdt i2c_i801 iTCO_vendor_support sym53c8xx snd_page_alloc
>      >> i2c_core i5k_amb [last unloaded: microcode]
>      >> Oct 29 08:48:31 ubermicro Pid: 12443, comm: ssh Tainted: P
>      >> 2.6.31-xen-r7 #2 X7DWA
>      >> Oct 29 08:48:31 ubermicro RIP: e030:[<ffffffff803de62c>]
>      >> [<ffffffff803de62c>] tty_poll+0x43/0x70
>      >> Oct 29 08:48:31 ubermicro RSP: e02b:ffff8803d2257a08  EFLAGS:
>      00010286
>      >> Oct 29 08:48:31 ubermicro RAX: 0000000000000000 RBX: ffff8803d1cee800
>      >> RCX: ffffffff8067c616
>      >> Oct 29 08:48:31 ubermicro RDX: ffff8800f28f1cc0 RSI: 0000000000000000
>      >> RDI: ffffffff80896340
>      >> Oct 29 08:48:31 ubermicro RBP: ffff8803e90a2d40 R08: ffff8803d2256000
>      >> R09: ffffffff806dbe68
>      >> Oct 29 08:48:31 ubermicro R10: ffff8803d18e7d40 R11: ffffffff804f47c3
>      >> R12: ffff8800f28f1cc0
>      >> Oct 29 08:48:31 ubermicro R13: 0000000000000000 R14: 0000000000000000
>      >> R15: 0000000000000008
>      >> Oct 29 08:48:31 ubermicro FS:  00007fd450def6f0(0000)
>      >> GS:ffffc90000000000(0000) knlGS:0000000000000000
>      >> Oct 29 08:48:31 ubermicro CS:  e033 DS: 0000 ES: 0000 CR0:
>      000000008005003b
>      >> Oct 29 08:48:31 ubermicro CR2: 0000000000000060 CR3: 00000003d238d000
>      >> CR4: 0000000000002660
>      >> Oct 29 08:48:31 ubermicro DR0: 0000000000000000 DR1: 0000000000000000
>      >> DR2: 0000000000000000
>      >> Oct 29 08:48:31 ubermicro DR3: 0000000000000000 DR6: 00000000ffff0ff0
>      >> DR7: 0000000000000400
>      >> Oct 29 08:48:31 ubermicro Process ssh (pid: 12443, threadinfo
>      >> ffff8803d2256000, task ffff8803d1f24700)
>      >> Oct 29 08:48:31 ubermicro Stack:
>      >> Oct 29 08:48:31 ubermicro 0000000000000000 ffff8803e90a2d40
>      >> 0000000000000000 0000000000000100
>      >> Oct 29 08:48:31 ubermicro <0> ffff8803d2257eb8 ffffffff802a7607
>      >> 0000000000000000 00ff8803d78dfa00
>      >> Oct 29 08:48:31 ubermicro <0> 0000000000000000 0000000100000000
>      >> 0000000000000000 0000000000000000
>      >> Oct 29 08:48:31 ubermicro Call Trace:
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802a7607>] ?
>      do_select+0x2bc/0x4f2
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802a7b7b>] ? __pollwait+0x0/0xd8
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802a7c53>] ? pollwake+0x0/0x54
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802a7c53>] ? pollwake+0x0/0x54
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802a7c53>] ? pollwake+0x0/0x54
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802a7c53>] ? pollwake+0x0/0x54
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802a7c53>] ? pollwake+0x0/0x54
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802a7c53>] ? pollwake+0x0/0x54
>      >> Oct 29 08:48:31 ubermicro [<ffffffff804c683f>] ?
>      release_sock+0x19/0xbc
>      >> Oct 29 08:48:31 ubermicro [<ffffffff804f5f06>] ?
>      tcp_sendmsg+0x898/0x98c
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802a79f9>] ?
>      core_sys_select+0x1bc/0x280
>      >> Oct 29 08:48:31 ubermicro [<ffffffff80299df6>] ?
>      do_sync_write+0xc9/0x10c
>      >> Oct 29 08:48:31 ubermicro [<ffffffff80244fcc>] ?
>      >> autoremove_wake_function+0x0/0x2e
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802a7b52>] ? sys_select+0x95/0xbe
>      >> Oct 29 08:48:31 ubermicro [<ffffffff8029aaa3>] ? sys_write+0x45/0x6e
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802092f8>] ?
>      system_call_fastpath+0x16/0x1b
>      >> Oct 29 08:48:31 ubermicro [<ffffffff80209290>] ? system_call+0x0/0x52
>      >> Oct 29 08:48:31 ubermicro Code: 18 48 8b 9f 98 00 00 00 48 8b 70 10
>      48
>      >> 89 df e8 29 fd ff ff 31 d2 85 c0 75 33 48 89 df 45 31 ed e8 04 6b 00
>      >> 00 49 89 c4 48 8b 00 <48> 8b 40 60 48 85 c0 74 0e 4c 89 f2 48 89 ee
>      48
>      >> 89 df ff d0 41
>      >> Oct 29 08:48:31 ubermicro RIP  [<ffffffff803de62c>]
>      tty_poll+0x43/0x70
>      >> Oct 29 08:48:31 ubermicro RSP <ffff8803d2257a08>
>      >> Oct 29 08:48:31 ubermicro CR2: 0000000000000060
>      >> Oct 29 08:48:31 ubermicro ---[ end trace 43a8558611b5e890 ]---
>      >> Oct 29 08:48:31 ubermicro BUG: unable to handle kernel NULL pointer
>      >> dereference at 0000000000000048
>      >> Oct 29 08:48:31 ubermicro IP: [<ffffffff803e143d>]
>      tty_ioctl+0x825/0x874
>      >> Oct 29 08:48:31 ubermicro PGD f0648067 PUD f297b067 PMD 0
>      >> Oct 29 08:48:31 ubermicro Oops: 0000 [#2] SMP
>      >> Oct 29 08:48:31 ubermicro last sysfs file:
>      >> /sys/devices/xen-backend/vbd-5-768/statistics/wr_sect
>      >> Oct 29 08:48:31 ubermicro CPU 0
>      >> Oct 29 08:48:31 ubermicro Modules linked in: ipv6 coretemp w83627hf
>      >> w83793 hwmon_vid bnep xen_scsibk rfcomm l2cap hci_uart st nvidia(P)
>      >> snd_hda_codec_realtek btusb snd_hda_intel snd_hda_codec snd_usb_audio
>      >> bluetooth snd_usb_lib snd_pcm snd_timer snd_rawmidi snd_hwdep snd igb
>      >> iTCO_wdt i2c_i801 iTCO_vendor_support sym53c8xx snd_page_alloc
>      >> i2c_core i5k_amb [last unloaded: microcode]
>      >> Oct 29 08:48:31 ubermicro Pid: 12438, comm: bash Tainted: P      D
>      >> 2.6.31-xen-r7 #2 X7DWA
>      >> Oct 29 08:48:31 ubermicro RIP: e030:[<ffffffff803e143d>]
>      >> [<ffffffff803e143d>] tty_ioctl+0x825/0x874
>      >> Oct 29 08:48:31 ubermicro RSP: e02b:ffff8800f2aa3e78  EFLAGS:
>      00010282
>      >> Oct 29 08:48:31 ubermicro RAX: 0000000000000000 RBX: ffff8803e90a2d40
>      >> RCX: 00000000fffffffa
>      >> Oct 29 08:48:31 ubermicro RDX: 0000000000000000 RSI: 0000000000000000
>      >> RDI: ffffffff80896340
>      >> Oct 29 08:48:31 ubermicro RBP: 00007fff3536a900 R08: 00000000006cd2e0
>      >> R09: 0000000000005403
>      >> Oct 29 08:48:31 ubermicro R10: 0000000000000000 R11: 0000000000000206
>      >> R12: ffff8803d1cee800
>      >> Oct 29 08:48:31 ubermicro R13: ffff8800f28f1cc0 R14: 0000000000005403
>      >> R15: 00000000ffffffff
>      >> Oct 29 08:48:31 ubermicro FS:  00007fb23d6196f0(0000)
>      >> GS:ffffc90000000000(0000) knlGS:0000000000000000
>      >> Oct 29 08:48:31 ubermicro CS:  e033 DS: 0000 ES: 0000 CR0:
>      000000008005003b
>      >> Oct 29 08:48:31 ubermicro CR2: 0000000000000048 CR3: 00000000f2944000
>      >> CR4: 0000000000002660
>      >> Oct 29 08:48:31 ubermicro DR0: 0000000000000000 DR1: 0000000000000000
>      >> DR2: 0000000000000000
>      >> Oct 29 08:48:31 ubermicro DR3: 0000000000000000 DR6: 00000000ffff0ff0
>      >> DR7: 0000000000000400
>      >> Oct 29 08:48:31 ubermicro Process bash (pid: 12438, threadinfo
>      >> ffff8800f2aa2000, task ffff8803e8048050)
>      >> Oct 29 08:48:31 ubermicro Stack:
>      >> Oct 29 08:48:31 ubermicro 0000000000000000 000003e80000309b
>      >> ffff8803e90a2d40 00007fff3536a900
>      >> Oct 29 08:48:31 ubermicro <0> 0000000000005403 00000000000000ff
>      >> 0000000000005403 ffffffff802a5e02
>      >> Oct 29 08:48:31 ubermicro <0> ffff8803e90a2d40 00007fff3536a900
>      >> ffff8803d109a050 ffffffff802a6357
>      >> Oct 29 08:48:31 ubermicro Call Trace:
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802a5e02>] ? vfs_ioctl+0x21/0x6b
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802a6357>] ?
>      do_vfs_ioctl+0x498/0x4ed
>      >> Oct 29 08:48:31 ubermicro [<ffffffff8022918d>] ?
>      default_wake_function+0x0/0x9
>      >> Oct 29 08:48:31 ubermicro [<ffffffff8029b019>] ? __fput+0x198/0x1c8
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802a63e8>] ? sys_ioctl+0x3c/0x5c
>      >> Oct 29 08:48:31 ubermicro [<ffffffff802092f8>] ?
>      system_call_fastpath+0x16/0x1b
>      >> Oct 29 08:48:32 ubermicro [<ffffffff80209290>] ? system_call+0x0/0x52
>      >> Oct 29 08:48:32 ubermicro Code: 48 85 c0 74 18 44 89 f2 48 89 e9 48
>      89
>      >> de 4c 89 e7 ff d0 3d fd fd ff ff 48 63 d0 75 4b 4c 89 e7 e8 f3 3c 00
>      >> 00 49 89 c5 48 8b 00 <48> 8b 40 48 48 85 c0 74 17 48 89 de 48 89 e9
>      44
>      >> 89 f2 4c 89 e7
>      >> Oct 29 08:48:32 ubermicro RIP  [<ffffffff803e143d>]
>      tty_ioctl+0x825/0x874
>      >> Oct 29 08:48:32 ubermicro RSP <ffff8800f2aa3e78>
>      >> Oct 29 08:48:32 ubermicro CR2: 0000000000000048
>      >> Oct 29 08:48:32 ubermicro ---[ end trace 43a8558611b5e891 ]---
>      >> Oct 29 08:48:32 ubermicro BUG: unable to handle kernel NULL pointer
>      >> dereference at 0000000000000028
>      >> Oct 29 08:48:32 ubermicro IP: [<ffffffff803e4f85>]
>      tty_ldisc_hangup+0x17/0x181
>      >> Oct 29 08:48:32 ubermicro PGD f288a067 PUD f506e067 PMD 0
>      >> Oct 29 08:48:32 ubermicro Oops: 0000 [#3] SMP
>      >> Oct 29 08:48:32 ubermicro last sysfs file:
>      >> /sys/devices/xen-backend/vbd-5-768/statistics/wr_sect
>      >> Oct 29 08:48:32 ubermicro CPU 0
>      >> Oct 29 08:48:32 ubermicro Modules linked in: ipv6 coretemp w83627hf
>      >> w83793 hwmon_vid bnep xen_scsibk rfcomm l2cap hci_uart st nvidia(P)
>      >> snd_hda_codec_realtek btusb snd_hda_intel snd_hda_codec snd_usb_audio
>      >> bluetooth snd_usb_lib snd_pcm snd_timer snd_rawmidi snd_hwdep snd igb
>      >> iTCO_wdt i2c_i801 iTCO_vendor_support sym53c8xx snd_page_alloc
>      >> i2c_core i5k_amb [last unloaded: microcode]
>      >> Oct 29 08:48:32 ubermicro Pid: 12436, comm: xterm Tainted: P      D
>      >> 2.6.31-xen-r7 #2 X7DWA
>      >> Oct 29 08:48:32 ubermicro RIP: e030:[<ffffffff803e4f85>]
>      >> [<ffffffff803e4f85>] tty_ldisc_hangup+0x17/0x181
>      >> Oct 29 08:48:32 ubermicro RSP: e02b:ffff8803d1c4dde8  EFLAGS:
>      00010286
>      >> Oct 29 08:48:32 ubermicro RAX: 0000000000000000 RBX: ffff8800f28f1cc0
>      >> RCX: ffffffff8022918d
>      >> Oct 29 08:48:32 ubermicro RDX: 0000000000000000 RSI: 0000000000000000
>      >> RDI: ffffffff80896340
>      >> Oct 29 08:48:32 ubermicro RBP: ffff8803d1cee800 R08: ffff8803d109a080
>      >> R09: 0000000000000001
>      >> Oct 29 08:48:32 ubermicro R10: ffff8803d1cee800 R11: 0000000000000000
>      >> R12: ffff8803e944db00
>      >> Oct 29 08:48:32 ubermicro R13: 0000000000000010 R14: 0000000000000000
>      >> R15: 0000000000000000
>      >> Oct 29 08:48:32 ubermicro FS:  00007fd05b5ef750(0000)
>      >> GS:ffffc90000000000(0000) knlGS:0000000000000000
>      >> Oct 29 08:48:32 ubermicro CS:  e033 DS: 0000 ES: 0000 CR0:
>      000000008005003b
>      >> Oct 29 08:48:32 ubermicro CR2: 0000000000000028 CR3: 00000000f2ea6000
>      >> CR4: 0000000000002660
>      >> Oct 29 08:48:32 ubermicro DR0: 0000000000000000 DR1: 0000000000000000
>      >> DR2: 0000000000000000
>      >> Oct 29 08:48:32 ubermicro DR3: 0000000000000000 DR6: 00000000ffff0ff0
>      >> DR7: 0000000000000400
>      >> Oct 29 08:48:32 ubermicro Process xterm (pid: 12436, threadinfo
>      >> ffff8803d1c4c000, task ffff8803e9a78cb0)
>      >> Oct 29 08:48:32 ubermicro Stack:
>      >> Oct 29 08:48:32 ubermicro ffff8803d1cee9e8 ffff8803d1cee800
>      >> ffff8803e944db00 ffffffff803defeb
>      >> Oct 29 08:48:32 ubermicro <0> ffff880300000001 ffff8803d630a000
>      >> ffff8803d1cee800 ffff8803e944db00
>      >> Oct 29 08:48:32 ubermicro <0> 0000000000000010 ffff8803d76704b8
>      >> ffff8803d761fb00 ffffffff803e010f
>      >> Oct 29 08:48:32 ubermicro Call Trace:
>      >> Oct 29 08:48:32 ubermicro [<ffffffff803defeb>] ?
>      do_tty_hangup+0x119/0x3a6
>      >> Oct 29 08:48:32 ubermicro [<ffffffff803e010f>] ?
>      tty_release_dev+0x1a9/0x42f
>      >> Oct 29 08:48:32 ubermicro [<ffffffff802acf7b>] ?
>      notify_change+0x270/0x285
>      >> Oct 29 08:48:32 ubermicro [<ffffffff803e03a6>] ?
>      tty_release+0x11/0x1a
>      >> Oct 29 08:48:32 ubermicro [<ffffffff8029af81>] ? __fput+0x100/0x1c8
>      >> Oct 29 08:48:32 ubermicro [<ffffffff802987a4>] ? filp_close+0x5e/0x66
>      >> Oct 29 08:48:32 ubermicro [<ffffffff80299979>] ? sys_close+0xa9/0x114
>      >> Oct 29 08:48:32 ubermicro [<ffffffff802092f8>] ?
>      system_call_fastpath+0x16/0x1b
>      >> Oct 29 08:48:32 ubermicro [<ffffffff80209290>] ? system_call+0x0/0x52
>      >> Oct 29 08:48:32 ubermicro Code: 48 89 ef e8 7f ff ff ff 5b 5d 41 5c
>      44
>      >> 89 e8 41 5d 41 5e c3 41 54 55 48 89 fd 53 e8 34 fb ff ff 48 85 c0 48
>      >> 89 c3 74 4c 48 8b 00 <48> 8b 40 28 48 85 c0 74 05 48 89 ef ff d0 48
>      89
>      >> ef e8 20 ec ff
>      >> Oct 29 08:48:32 ubermicro RIP  [<ffffffff803e4f85>]
>      tty_ldisc_hangup+0x17/0x181
>      >> Oct 29 08:48:32 ubermicro RSP <ffff8803d1c4dde8>
>      >> Oct 29 08:48:32 ubermicro CR2: 0000000000000028
>      >> Oct 29 08:48:32 ubermicro ---[ end trace 43a8558611b5e892 ]---
>      >> Oct 29 08:50:01 ubermicro cron[12516]: (root) CMD (test -x
>      >> /usr/sbin/run-crons && /usr/sbin/run-crons )
>      >> Oct 29 08:50:28 ubermicro su[12536]: Successful su for root by admin
>      >> Oct 29 08:50:28 ubermicro su[12536]: + pts/12 admin:root
>      >> Oct 29 08:50:28 ubermicro su[12536]: pam_unix(su:session): session
>      >> opened for user root by admin(uid=1000)
>      >> Oct 29 08:50:30 ubermicro BUG: unable to handle kernel paging request
>      >> at 0000000200000b19
>      >> Oct 29 08:50:30 ubermicro IP: [<ffffffff802d7a9b>]
>      show_map_vma+0x2d/0x188
>      >> Oct 29 08:50:30 ubermicro PGD f2ea9067 PUD 0
>      >> Oct 29 08:50:30 ubermicro Oops: 0000 [#4] SMP
>      >> Oct 29 08:50:30 ubermicro last sysfs file:
>      >> /sys/devices/xen-backend/vbd-5-768/statistics/wr_sect
>      >> Oct 29 08:50:30 ubermicro CPU 0
>      >> Oct 29 08:50:30 ubermicro Modules linked in: ipv6 coretemp w83627hf
>      >> w83793 hwmon_vid bnep xen_scsibk rfcomm l2cap hci_uart st nvidia(P)
>      >> snd_hda_codec_realtek btusb snd_hda_intel snd_hda_codec snd_usb_audio
>      >> bluetooth snd_usb_lib snd_pcm snd_timer snd_rawmidi snd_hwdep snd igb
>      >> iTCO_wdt i2c_i801 iTCO_vendor_support sym53c8xx snd_page_alloc
>      >> i2c_core i5k_amb [last unloaded: microcode]
>      >> Oct 29 08:50:30 ubermicro Pid: 12544, comm: lsof Tainted: P      D
>      >> 2.6.31-xen-r7 #2 X7DWA
>      >> Oct 29 08:50:30 ubermicro RIP: e030:[<ffffffff802d7a9b>]
>      >> [<ffffffff802d7a9b>] show_map_vma+0x2d/0x188
>      >> Oct 29 08:50:30 ubermicro RSP: e02b:ffff8800f12bbe18  EFLAGS:
>      00010202
>      >> Oct 29 08:50:30 ubermicro RAX: ffff8800f44153e0 RBX: 0000000200000b01
>      >> RCX: 0000000000000000
>      >> Oct 29 08:50:30 ubermicro RDX: ffff8800d088b240 RSI: ffff8800f28f2330
>      >> RDI: ffff8800d088b240
>      >> Oct 29 08:50:30 ubermicro RBP: ffff8800f28f2330 R08: 0000000000000002
>      >> R09: 0000000000000000
>      >> Oct 29 08:50:30 ubermicro R10: 0000000000000000 R11: 0000000000000000
>      >> R12: ffff8800d088b240
>      >> Oct 29 08:50:30 ubermicro R13: 0000000000000000 R14: 0000000000000000
>      >> R15: 0000000000626fe0
>      >> Oct 29 08:50:30 ubermicro FS:  00007f701a15c6f0(0000)
>      >> GS:ffffc90000000000(0000) knlGS:0000000000000000
>      >> Oct 29 08:50:30 ubermicro CS:  e033 DS: 0000 ES: 0000 CR0:
>      000000008005003b
>      >> Oct 29 08:50:30 ubermicro CR2: 0000000200000b19 CR3: 00000000d133b000
>      >> CR4: 0000000000002660
>      >> Oct 29 08:50:30 ubermicro DR0: 0000000000000000 DR1: 0000000000000000
>      >> DR2: 0000000000000000
>      >> Oct 29 08:50:30 ubermicro DR3: 0000000000000000 DR6: 00000000ffff0ff0
>      >> DR7: 0000000000000400
>      >> Oct 29 08:50:30 ubermicro Process lsof (pid: 12544, threadinfo
>      >> ffff8800f12ba000, task ffff8803d1f58cf0)
>      >> Oct 29 08:50:30 ubermicro Stack:
>      >> Oct 29 08:50:30 ubermicro 00007fff00000078 ffff880300000070
>      >> 0000000000000000 ffffffff00000000
>      >> Oct 29 08:50:30 ubermicro <0> ffff880300000000 0000000000000000
>      >> ffff8800f12bbe64 ffffffff802db3a1
>      >> Oct 29 08:50:30 ubermicro <0> ffff8800f44153e0 00000030f44153e0
>      >> ffff8800d088b240 ffff8800f28f2330
>      >> Oct 29 08:50:30 ubermicro Call Trace:
>      >> Oct 29 08:50:30 ubermicro [<ffffffff802db3a1>] ?
>      mm_for_maps+0x61/0x69
>      >> Oct 29 08:50:30 ubermicro [<ffffffff802d7c0d>] ? show_map+0x17/0x3f
>      >> Oct 29 08:50:30 ubermicro [<ffffffff802b1618>] ? seq_read+0x244/0x326
>      >> Oct 29 08:50:30 ubermicro [<ffffffff8029a65c>] ? vfs_read+0xaa/0x166
>      >> Oct 29 08:50:30 ubermicro [<ffffffff8029aa35>] ? sys_read+0x45/0x6e
>      >> Oct 29 08:50:30 ubermicro [<ffffffff802092f8>] ?
>      system_call_fastpath+0x16/0x1b
>      >> Oct 29 08:50:30 ubermicro [<ffffffff80209290>] ? system_call+0x0/0x52
>      >> Oct 29 08:50:30 ubermicro Code: 45 31 db 45 31 f6 45 31 d2 41 55 41
>      54
>      >> 49 89 fc 55 48 89 f5 53 48 83 ec 50 48 8b 9e 90 00 00 00 4c 8b 2e 8b
>      >> 4e 28 48 85 db 74 22 <48> 8b 43 18 4c 8b 9e 88 00 00 00 48 8b 50 10
>      49
>      >> c1 e3 0c 48 8b
>      >> Oct 29 08:50:30 ubermicro RIP  [<ffffffff802d7a9b>]
>      show_map_vma+0x2d/0x188
>      >> Oct 29 08:50:30 ubermicro RSP <ffff8800f12bbe18>
>      >> Oct 29 08:50:30 ubermicro CR2: 0000000200000b19
>      >> Oct 29 08:50:30 ubermicro ---[ end trace 43a8558611b5e893 ]---
>      >>
>      >
>
>      _______________________________________________
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>      [7]Xen-users@xxxxxxxxxxxxxxxxxxx
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>
> References
>
>    Visible links
>    1. file:///mc/compose?to=JBeulich@xxxxxxxxxx
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>    3. file:///mc/compose?to=JBeulich@xxxxxxxxxx
>    4. file:///mc/compose?to=andrew.lyon@xxxxxxxxx
>    5. file:///mc/compose?to=bderzhavets@xxxxxxxxx
>    6. file:///mc/compose?to=JBeulich@xxxxxxxxxx
>    7. file:///mc/compose?to=Xen-users@xxxxxxxxxxxxxxxxxxx
>    8. http://lists.xensource.com/xen-users

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