Public bug reported:
This has happened a couple of times recently under heavy disk IO, not sure why
because this hasn't happened for a long time before.
So the setup is: Karmic host with ext4 filesystem.
Karmic KVM guest with encrypted filesystem on a disk-file on the ext4
filesystem.
The BUG is on the host.
You can see that this happens both with 2.6.31-16 and 2.6.31-9-rt (which
is a bit older, right?).
[ 9036.873933] ------------[ cut here ]------------
[ 9036.873948] kernel BUG at /build/buildd/linux-2.6.31/fs/ext4/extents.c:1184!
[ 9036.873955] invalid opcode: 0000 [#1] SMP
[ 9036.873963] last sysfs file:
/sys/devices/pci0000:00/0000:00:11.0/host1/target1:0:0/1:0:0:0/block/sda/uevent
[ 9036.873969] CPU 1
[ 9036.873973] Modules linked in: isofs udf crc_itu_t tun ipt_MASQUERADE
iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack
ipt_REJECT xt_tcpudp kvm_amd kvm bridge stp snd_hda_codec_atihdmi
snd_hda_codec_realtek snd_hda_intel snd_hda_codec tda827x tda10023 snd_hwdep
snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss budget_ci
snd_seq_midi budget_core snd_rawmidi snd_seq_midi_event dvb_core saa7146
ttpci_eeprom snd_seq ir_common snd_timer snd_seq_device psmouse iptable_filter
ip_tables snd soundcore i2c_piix4 snd_page_alloc lirc_mceusb shpchp x_tables
lirc_dev serio_raw lp parport k8temp amd64_edac_mod edac_core radeon ttm drm
i2c_algo_bit r8169 mii
[ 9036.874070] Pid: 2731, comm: kvm Not tainted 2.6.31-16-generic #53-Ubuntu
Unknow
[ 9036.874076] RIP: 0010:[<ffffffff811d020e>] [<ffffffff811d020e>]
ext4_ext_search_left+0xde/0xf0
[ 9036.874098] RSP: 0018:ffff8800147a18c0 EFLAGS: 00010216
[ 9036.874103] RAX: ffff88006bda0160 RBX: 0000000000000052 RCX: ffff8800496ff00c
[ 9036.874108] RDX: 0000000000000001 RSI: ffff88006bda0100 RDI: 0000000000000002
[ 9036.874113] RBP: ffff8800147a18c8 R08: 0000000000000002 R09: 0000000001672e2a
[ 9036.874119] R10: 0000000001672e48 R11: ffff88006bda0190 R12: 0000000000000001
[ 9036.874124] R13: ffff880063593130 R14: ffff88006bda0100 R15: ffff8800147a1a08
[ 9036.874130] FS: 00007f8530e78910(0000) GS:ffff880001a14000(0000)
knlGS:0000000000000000
[ 9036.874136] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 9036.874141] CR2: 00007f1491d5a000 CR3: 000000005fc91000 CR4: 00000000000006e0
[ 9036.874146] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9036.874151] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 9036.874157] Process kvm (pid: 2731, threadinfo ffff8800147a0000, task
ffff880059e28000)
[ 9036.874161] Stack:
[ 9036.874164] 0000000001672e2a ffff8800147a1978 ffffffff811d3ae0
0000000000000003
[ 9036.874172] <0> 0000000000000001 ffff88006d8ce3c0 000000060000000d
ffff8800147a1948
[ 9036.874181] <0> ffffffff815297ac ffff880001672e2a ffffffff81036419
0000000000000000
[ 9036.874190] Call Trace:
[ 9036.874200] [<ffffffff811d3ae0>] ext4_ext_get_blocks+0x360/0x5b0
[ 9036.874212] [<ffffffff815297ac>] ? __down_write_nested+0xbc/0xd0
[ 9036.874224] [<ffffffff81036419>] ? default_spin_lock_flags+0x9/0x10
[ 9036.874232] [<ffffffff811b4a19>] ext4_get_blocks+0x1d9/0x210
[ 9036.874239] [<ffffffff811b53f7>] mpage_da_map_blocks+0xa7/0x370
[ 9036.874247] [<ffffffff811eb07e>] ? jbd2_journal_start+0xae/0x100
[ 9036.874254] [<ffffffff811b5963>] ext4_da_writepages+0x2a3/0x500
[ 9036.874267] [<ffffffff810e3928>] do_writepages+0x28/0x50
[ 9036.874274] [<ffffffff810dae93>] __filemap_fdatawrite_range+0x53/0x60
[ 9036.874281] [<ffffffff810db2fe>] filemap_fdatawrite_range+0xe/0x10
[ 9036.874288] [<ffffffff810db403>] sync_page_range+0x63/0xb0
[ 9036.874295] [<ffffffff810dccba>] generic_file_aio_write+0xaa/0xf0
[ 9036.874306] [<ffffffff811ae3b9>] ext4_file_write+0x49/0x160
[ 9036.874313] [<ffffffff81036419>] ? default_spin_lock_flags+0x9/0x10
[ 9036.874321] [<ffffffff811ae370>] ? ext4_file_write+0x0/0x160
[ 9036.874331] [<ffffffff8111eed3>] do_sync_readv_writev+0xf3/0x130
[ 9036.874341] [<ffffffff81078b30>] ? autoremove_wake_function+0x0/0x40
[ 9036.874353] [<ffffffff81220a81>] ? security_file_permission+0x11/0x20
[ 9036.874361] [<ffffffff8111ffba>] do_readv_writev+0xca/0x1f0
[ 9036.874370] [<ffffffff8108b348>] ? do_futex+0xc8/0x1c0
[ 9036.874377] [<ffffffff8112011e>] vfs_writev+0x3e/0x60
[ 9036.874385] [<ffffffff811201da>] sys_pwritev+0x9a/0xb0
[ 9036.874396] [<ffffffff81012002>] system_call_fastpath+0x16/0x1b
[ 9036.874400] Code: 13 45 39 d1 72 2d 41 83 ea 01 48 63 db 44 89 12 8b 50 08
0f b7 40 06 48 c1 e0 20 48 09 d0 48 8d 44 18 ff 48 89 01 31 c0 5b c9 c3 <0f> 0b
eb fe 0f 0b eb fe 0f 0b eb fe 0f 0b eb fe 66 90 55 48 89
[ 9036.874462] RIP [<ffffffff811d020e>] ext4_ext_search_left+0xde/0xf0
[ 9036.874471] RSP <ffff8800147a18c0>
[ 9036.874478] ---[ end trace f13358d30dc8de09 ]---
[10322.349882] ------------[ cut here ]------------
[10322.349898] kernel BUG at
/build/buildd/linux-rt-2.6.31/fs/ext4/extents.c:1184!
[10322.349905] invalid opcode: 0000 [#1] PREEMPT SMP
[10322.349913] last sysfs file:
/sys/devices/pci0000:00/0000:00:11.0/host1/target1:0:0/1:0:0:0/block/sda/uevent
[10322.349919] CPU 1
[10322.349923] Modules linked in: tun ipt_MASQUERADE iptable_nat nf_nat
nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp
bridge stp kvm_amd kvm tda827x tda10023 budget_ci snd_hda_codec_atihdmi
budget_core dvb_core snd_hda_codec_realtek saa7146 snd_seq_dummy snd_seq_oss
snd_seq_midi ttpci_eeprom lp psmouse snd_hda_intel serio_raw snd_rawmidi
snd_hda_codec snd_hwdep snd_pcm_oss snd_seq_midi_event ir_common snd_mixer_oss
snd_seq amd64_edac_mod snd_pcm parport edac_core snd_timer iptable_filter
k8temp ip_tables i2c_piix4 snd_seq_device shpchp x_tables snd soundcore
lirc_mceusb lirc_dev snd_page_alloc r8169 mii radeon ttm drm i2c_algo_bit
[10322.350015] Pid: 3068, comm: kvm Not tainted 2.6.31-9-rt #152-Ubuntu Unknow
[10322.350021] RIP: 0010:[<ffffffff811d46ae>] [<ffffffff811d46ae>]
ext4_ext_search_left+0xde/0xf0
[10322.350039] RSP: 0018:ffff88004e4fd900 EFLAGS: 00010216
[10322.350044] RAX: ffff88002ec3d8e0 RBX: 0000000000000052 RCX: ffff880045a3c00c
[10322.350049] RDX: 0000000000000001 RSI: ffff88002ec3d880 RDI: 0000000000000002
[10322.350054] RBP: ffff88004e4fd908 R08: 0000000000000002 R09: 0000000001672e1c
[10322.350059] R10: 0000000001672e48 R11: ffff88002ec3d910 R12: ffff8800625f0ac0
[10322.350064] R13: ffff8800625f0ba0 R14: ffff88004e4fda48 R15: ffff88002ec3d880
[10322.350071] FS: 00007fda56490910(0000) GS:ffff880001b53000(0000)
knlGS:0000000000000000
[10322.350076] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[10322.350081] CR2: 00007f67a4ed7000 CR3: 0000000060d71000 CR4: 00000000000006e0
[10322.350086] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[10322.350091] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[10322.350097] Process kvm (pid: 3068, threadinfo ffff88004e4fc000, task
ffff88004f0d8840)
[10322.350101] Stack:
[10322.350104] 0000000001672e1c ffff88004e4fd9b8 ffffffff811d7fc4
0000000000000292
[10322.350112] <0> ffff8800625f0fc8 ffff88001ac91810 000000040000000d
ffff8800625f0d48
[10322.350120] <0> ffff8800625f0d30 ffff880001672e1c ffff880001b61ae0
0000000000000000
[10322.350129] Call Trace:
[10322.350139] [<ffffffff811d7fc4>] ext4_ext_get_blocks+0x384/0x5d0
[10322.350148] [<ffffffff811b9809>] ext4_get_blocks+0x1d9/0x210
[10322.350156] [<ffffffff811ba1d7>] mpage_da_map_blocks+0xa7/0x370
[10322.350166] [<ffffffff810ea591>] ? __pagevec_release+0x21/0x30
[10322.350173] [<ffffffff810e80e0>] ? write_cache_pages+0x2b0/0x4e0
[10322.350180] [<ffffffff811bab00>] ? __mpage_da_writepage+0x0/0x1a0
[10322.350190] [<ffffffff811ef80e>] ? jbd2_journal_start+0xae/0x100
[10322.350197] [<ffffffff811ba753>] ext4_da_writepages+0x2b3/0x590
[10322.350205] [<ffffffff810e836b>] do_writepages+0x2b/0x50
[10322.350214] [<ffffffff810df02b>] __filemap_fdatawrite_range+0x5b/0x60
[10322.350222] [<ffffffff810df34e>] filemap_fdatawrite_range+0xe/0x10
[10322.350230] [<ffffffff810df453>] sync_page_range+0x63/0xb0
[10322.350238] [<ffffffff810e116a>] generic_file_aio_write+0xaa/0xf0
[10322.350245] [<ffffffff811b30bc>] ext4_file_write+0x4c/0x160
[10322.350253] [<ffffffff81122892>] do_sync_write+0xf2/0x130
[10322.350264] [<ffffffff8107ae80>] ? autoremove_wake_function+0x0/0x40
[10322.350273] [<ffffffff8108bbe1>] ? futex_wake+0x111/0x130
[10322.350282] [<ffffffff812255f1>] ? security_file_permission+0x11/0x20
[10322.350289] [<ffffffff81122b78>] vfs_write+0xb8/0x1a0
[10322.350296] [<ffffffff81123ecd>] ? fget_light+0x9d/0xb0
[10322.350302] [<ffffffff8112351a>] sys_pwrite64+0x7a/0x90
[10322.350313] [<ffffffff81012102>] system_call_fastpath+0x16/0x1b
[10322.350317] Code: 13 45 39 d1 72 2d 41 83 ea 01 48 63 db 44 89 12 8b 50 08
0f b7 40 06 48 c1 e0 20 48 09 d0 48 8d 44 18 ff 48 89 01 31 c0 5b c9 c3 <0f> 0b
eb fe 0f 0b eb fe 0f 0b eb fe 0f 0b eb fe 66 90 55 48 89
[10322.350380] RIP [<ffffffff811d46ae>] ext4_ext_search_left+0xde/0xf0
[10322.350387] RSP <ffff88004e4fd900>
[10322.350425] ---[ end trace 167087d20ac5c1ae ]---
ProblemType: Bug
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: ernst 2747 F.... xfce4-volumed
/dev/snd/controlC0: ernst 2747 F.... xfce4-volumed
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'SB'/'HDA ATI SB at 0xfe024000 irq 16'
Mixer name : 'Realtek ALC889A'
Components : 'HDA:10ec0885,1458a002,00100101'
Controls : 37
Simple ctrls : 20
Card1.Amixer.info:
Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfdffc000 irq 19'
Mixer name : 'ATI RS690/780 HDMI'
Components : 'HDA:1002791a,00791a00,00100000'
Controls : 4
Simple ctrls : 1
Card1.Amixer.values:
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Date: Sun Jan 3 09:48:41 2010
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=0c64fb3c-7faa-4c4e-82b6-dfbf940706fc
InstallationMedia: Mythbuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
MachineType: Unknow Unknow
Package: linux-image-2.6.31-16-virtual (not installed)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-9-rt
root=UUID=2d2e97fa-0922-407c-8077-e623b022b3c0 ro rootflags=data=writeback
quiet splash
ProcEnviron:
LANG=sv_SE.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-9.152-rt
RelatedPackageVersions: linux-firmware 1.25
RfKill:
SourcePackage: linux
Uname: Linux 2.6.31-9-rt x86_64
XsessionErrors: (polkit-gnome-authentication-agent-1:2727): GLib-CRITICAL **:
g_once_init_leave: assertion `initialization_value != 0' failed
dmi.bios.date: 12/31/2008
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F7
dmi.board.name: RS780-SB700
dmi.board.version: Unknox
dmi.chassis.type: 3
dmi.chassis.vendor: Unknow
dmi.chassis.version: Unknow
dmi.modalias:
dmi:bvnAwardSoftwareInternational,Inc.:bvrF7:bd12/31/2008:svnUnknow:pnUnknow:pvrUnknow:rvn:rnRS780-SB700:rvrUnknox:cvnUnknow:ct3:cvrUnknow:
dmi.product.name: Unknow
dmi.product.version: Unknow
dmi.sys.vendor: Unknow
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug
--
kernel BUG at /build/buildd/linux-rt-2.6.31/fs/ext4/extents.c:1184!
https://bugs.launchpad.net/bugs/502542
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