* kernel BUG at fs/ext4/extents.c:2766!
@ 2012-03-07 1:14 Jörg Sommer
2012-03-07 10:59 ` Yongqiang Yang
0 siblings, 1 reply; 3+ messages in thread
From: Jörg Sommer @ 2012-03-07 1:14 UTC (permalink / raw)
To: Theodore Ts'o, Andreas Dilger, linux-ext4
[-- Attachment #1: Type: text/plain, Size: 3081 bytes --]
Hi,
I've got this Oops after I've created a file that filled up the
filesystem.
[ 852.407974] ------------[ cut here ]------------
[ 852.412105] kernel BUG at /build/buildd-linux-2.6_3.2.9-1-powerpc-xXyGnW/linux-2.6-3.2.9/debian/build/source_powerpc_none/fs/ext4/extents.c:2766!
[ 852.433083] Oops: Exception in kernel mode, sig: 5 [#1]
[ 852.436340] PowerMac
[ 852.438523] Modules linked in: evdev ext4 crc16 jbd2 mbcache sr_mod cdrom virtio_net virtio_blk ata_generic pata_cmd64x virtio_pci virtio_ring virtio [last unloaded: scsi_wait_scan]
[ 852.449271] NIP: c9297bbc LR: c9297f78 CTR: c011f92c
[ 852.452964] REGS: c5ec5930 TRAP: 0700 Not tainted (3.2.0-2-powerpc)
[ 852.456848] MSR: 00029032 <EE,ME,CE,IR,DR> CR: 24002042 XER: 00000000
[ 852.477461] TASK = c1cea170[425] 'flush-254:0' THREAD: c5ec4000
[ 852.479210] GPR00: 00000001 c5ec59e0 c1cea170 00000001 c759e0e0 c1fc54e0 00000000 00000003
[ 852.484825] GPR08: 00000000 00000000 c31ff018 c5ec5a50 24002024 00000000 01000000 00000000
[ 852.490069] GPR16: 000007b5 00000000 00071800 00005800 00000000 00000001 c1fc54e0 00000000
[ 852.495771] GPR24: 00000000 c1fc5500 c31ff00c 00000003 c1fc54e0 00000001 00000000 c759e0e0
[ 852.523827] NIP [c9297bbc] ext4_split_extent_at+0xb4/0x340 [ext4]
[ 852.528397] LR [c9297f78] ext4_split_extent+0x130/0x144 [ext4]
[ 852.532979] Call Trace:
[ 852.536640] [c5ec5a50] [c9297f78] ext4_split_extent+0x130/0x144 [ext4]
[ 852.541230] [c5ec5a80] [c92988a4] ext4_ext_handle_uninitialized_extents+0x918/0xabc [ext4]
[ 852.563059] [c5ec5b20] [c9298f44] ext4_ext_map_blocks+0x41c/0x142c [ext4]
[ 852.569110] [c5ec5bf0] [c9271340] ext4_map_blocks+0x134/0x344 [ext4]
[ 852.574558] [c5ec5c70] [c9275750] mpage_da_map_and_submit+0xe0/0x4f8 [ext4]
[ 852.579567] [c5ec5d00] [c92762b0] ext4_da_writepages+0x328/0x4f8 [ext4]
[ 852.585242] [c5ec5db0] [c00c1534] do_writepages+0x30/0x58
[ 852.590489] [c5ec5dc0] [c0116608] writeback_single_inode+0x128/0x2f8
[ 852.613485] [c5ec5df0] [c0116acc] writeback_sb_inodes+0x144/0x1d0
[ 852.619216] [c5ec5e60] [c0116bc0] __writeback_inodes_wb+0x68/0xac
[ 852.624050] [c5ec5e90] [c0116d4c] wb_writeback+0x148/0x250
[ 852.628820] [c5ec5ef0] [c01174b4] wb_do_writeback+0x1e4/0x218
[ 852.633826] [c5ec5f60] [c0117594] bdi_writeback_thread+0xac/0x244
[ 852.656169] [c5ec5fb0] [c005cc34] kthread+0x78/0x7c
[ 852.662327] [c5ec5ff0] [c000f534] kernel_thread+0x4c/0x68
[ 852.666968] Instruction dump:
[ 852.670996] 5012421e 5012c00e a01a0006 5411c23e 5011442e 38000001 5631043e 419c0014
[ 852.676786] 7c18a214 7c00f010 38000000 7c000114 <0f000000> 80990018 7fa3eb78 4bffd80d
[ 852.683259] ---[ end trace 7771de8b04a49e96 ]---
[ 0.000000] Linux version 3.2.0-2-powerpc (Debian 3.2.9-1) (debian-kernel@lists.debian.org) (gcc version 4.6.2 (Debian 4.6.2-11) ) #1 Sun Mar 4 22:09:57 UTC 2012
The system was a virtual machine running with kvm/qemu.
Bye, Jörg.
--
Der Mensch hat die Atombombe erfunden.
Keine Maus der Welt käme auf die Idee, eine Mausefalle zu konstruieren.
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: kernel BUG at fs/ext4/extents.c:2766!
2012-03-07 1:14 kernel BUG at fs/ext4/extents.c:2766! Jörg Sommer
@ 2012-03-07 10:59 ` Yongqiang Yang
2012-03-07 17:29 ` Jörg Sommer
0 siblings, 1 reply; 3+ messages in thread
From: Yongqiang Yang @ 2012-03-07 10:59 UTC (permalink / raw)
To: Jörg Sommer; +Cc: Theodore Ts'o, Andreas Dilger, linux-ext4
On Wed, Mar 7, 2012 at 9:14 AM, Jörg Sommer <joerg@alea.gnuu.de> wrote:
> Hi,
>
> I've got this Oops after I've created a file that filled up the
> filesystem.
>
> [ 852.407974] ------------[ cut here ]------------
> [ 852.412105] kernel BUG at /build/buildd-linux-2.6_3.2.9-1-powerpc-xXyGnW/linux-2.6-3.2.9/debian/build/source_powerpc_none/fs/ext4/extents.c:2766!
Hi,
Could this be reproduced?
Yongqiang.
> [ 852.433083] Oops: Exception in kernel mode, sig: 5 [#1]
> [ 852.436340] PowerMac
> [ 852.438523] Modules linked in: evdev ext4 crc16 jbd2 mbcache sr_mod cdrom virtio_net virtio_blk ata_generic pata_cmd64x virtio_pci virtio_ring virtio [last unloaded: scsi_wait_scan]
> [ 852.449271] NIP: c9297bbc LR: c9297f78 CTR: c011f92c
> [ 852.452964] REGS: c5ec5930 TRAP: 0700 Not tainted (3.2.0-2-powerpc)
> [ 852.456848] MSR: 00029032 <EE,ME,CE,IR,DR> CR: 24002042 XER: 00000000
> [ 852.477461] TASK = c1cea170[425] 'flush-254:0' THREAD: c5ec4000
> [ 852.479210] GPR00: 00000001 c5ec59e0 c1cea170 00000001 c759e0e0 c1fc54e0 00000000 00000003
> [ 852.484825] GPR08: 00000000 00000000 c31ff018 c5ec5a50 24002024 00000000 01000000 00000000
> [ 852.490069] GPR16: 000007b5 00000000 00071800 00005800 00000000 00000001 c1fc54e0 00000000
> [ 852.495771] GPR24: 00000000 c1fc5500 c31ff00c 00000003 c1fc54e0 00000001 00000000 c759e0e0
> [ 852.523827] NIP [c9297bbc] ext4_split_extent_at+0xb4/0x340 [ext4]
> [ 852.528397] LR [c9297f78] ext4_split_extent+0x130/0x144 [ext4]
> [ 852.532979] Call Trace:
> [ 852.536640] [c5ec5a50] [c9297f78] ext4_split_extent+0x130/0x144 [ext4]
> [ 852.541230] [c5ec5a80] [c92988a4] ext4_ext_handle_uninitialized_extents+0x918/0xabc [ext4]
> [ 852.563059] [c5ec5b20] [c9298f44] ext4_ext_map_blocks+0x41c/0x142c [ext4]
> [ 852.569110] [c5ec5bf0] [c9271340] ext4_map_blocks+0x134/0x344 [ext4]
> [ 852.574558] [c5ec5c70] [c9275750] mpage_da_map_and_submit+0xe0/0x4f8 [ext4]
> [ 852.579567] [c5ec5d00] [c92762b0] ext4_da_writepages+0x328/0x4f8 [ext4]
> [ 852.585242] [c5ec5db0] [c00c1534] do_writepages+0x30/0x58
> [ 852.590489] [c5ec5dc0] [c0116608] writeback_single_inode+0x128/0x2f8
> [ 852.613485] [c5ec5df0] [c0116acc] writeback_sb_inodes+0x144/0x1d0
> [ 852.619216] [c5ec5e60] [c0116bc0] __writeback_inodes_wb+0x68/0xac
> [ 852.624050] [c5ec5e90] [c0116d4c] wb_writeback+0x148/0x250
> [ 852.628820] [c5ec5ef0] [c01174b4] wb_do_writeback+0x1e4/0x218
> [ 852.633826] [c5ec5f60] [c0117594] bdi_writeback_thread+0xac/0x244
> [ 852.656169] [c5ec5fb0] [c005cc34] kthread+0x78/0x7c
> [ 852.662327] [c5ec5ff0] [c000f534] kernel_thread+0x4c/0x68
> [ 852.666968] Instruction dump:
> [ 852.670996] 5012421e 5012c00e a01a0006 5411c23e 5011442e 38000001 5631043e 419c0014
> [ 852.676786] 7c18a214 7c00f010 38000000 7c000114 <0f000000> 80990018 7fa3eb78 4bffd80d
> [ 852.683259] ---[ end trace 7771de8b04a49e96 ]---
>
> [ 0.000000] Linux version 3.2.0-2-powerpc (Debian 3.2.9-1) (debian-kernel@lists.debian.org) (gcc version 4.6.2 (Debian 4.6.2-11) ) #1 Sun Mar 4 22:09:57 UTC 2012
>
> The system was a virtual machine running with kvm/qemu.
>
> Bye, Jörg.
> --
> Der Mensch hat die Atombombe erfunden.
> Keine Maus der Welt käme auf die Idee, eine Mausefalle zu konstruieren.
--
Best Wishes
Yongqiang Yang
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: kernel BUG at fs/ext4/extents.c:2766!
2012-03-07 10:59 ` Yongqiang Yang
@ 2012-03-07 17:29 ` Jörg Sommer
0 siblings, 0 replies; 3+ messages in thread
From: Jörg Sommer @ 2012-03-07 17:29 UTC (permalink / raw)
To: Yongqiang Yang; +Cc: Theodore Ts'o, Andreas Dilger, linux-ext4
[-- Attachment #1: Type: text/plain, Size: 945 bytes --]
Hallo Yank,
Yongqiang Yang hat am Wed 07. Mar, 18:59 (+0800) geschrieben:
> On Wed, Mar 7, 2012 at 9:14 AM, Jörg Sommer <joerg@alea.gnuu.de> wrote:
> > Hi,
> >
> > I've got this Oops after I've created a file that filled up the
> > filesystem.
> >
> > [ 852.407974] ------------[ cut here ]------------
> > [ 852.412105] kernel BUG at /build/buildd-linux-2.6_3.2.9-1-powerpc-xXyGnW/linux-2.6-3.2.9/debian/build/source_powerpc_none/fs/ext4/extents.c:2766!
> Hi,
>
> Could this be reproduced?
I can't belive it, yes, it's possible. I haven't expected this. I can
provide you a filesystem image that you can boot and reproduce it
yourself, if you have qemu installed. The image is 620MB. I can also
create an image with e2image from the broken filesystem.
Regards, Jörg.
--
And 1.1.81 is officially BugFree(tm), so if you receive any bug-reports
on it, you know they are just evil lies.
(Linus Torvalds)
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2012-03-07 10:59 ` Yongqiang Yang
2012-03-07 17:29 ` Jörg Sommer
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