ive had the same problem and this commit helped, which i had to cherry-pick:
commit c83b3452db6e1b048312c50b23f06c9634535f80
Author: Josef Bacik <jbacik@xxxxxxxxxxxx>
Date: Mon Jul 22 12:50:37 2013 -0400
Btrfs: reset ret in record_one_backref
I was getting warnings when running find ./ -type f -exec btrfs fi
defrag -f {}
\; from record_one_backref because ret was set. Turns out it was
because it was
set to 1 because the search slot didn't come out exact and we
never reset it.
So reset it to 0 right after the search so we don't leak this and get
uneccessary warnings. Thanks,
Ahmet
On Mon, Sep 9, 2013 at 4:41 AM, Wang Shilong <wangsl.fnst@xxxxxxxxxxxxxx> wrote:
>
> Hello,
>
> This bug should have been fixed by Liu Bo, the following patch:
>
> Btrfs: fix crash regarding to ulist_add_merge
>
> https://git.kernel.org/cgit/linux/kernel/git/josef/btrfs-next.git/commit/?h=for-chris&id=35f0399db6658f465b00893bdd13b992a0acfef0
>
> You can try btrfs-next:
> git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-next.git
>
> Thanks,
> Wang
>
> On 09/07/2013 05:35 AM, Marco L. Crociani wrote:
>>
>> Hi,
>> I have run:
>> find / -xdev \( -type f -o -type d \) -exec btrfs filesystem defragment -v
>> -- {} +
>>
>> On Ubuntu 13.04 with kernel 3.11 from root recovery shell after remounting
>> rw /
>>
>> This is the dmesg output:
>>
>> [17788.691504] ------------[ cut here ]------------
>> [17788.691510] ------------[ cut here ]------------
>> [17788.691538] WARNING: CPU: 1 PID: 2093 at
>> /home/apw/COD/linux/fs/btrfs/inode.c:2206 record_one_backref+0x3a9/0x420
>> [btrfs]()
>> [17788.691568] WARNING: CPU: 2 PID: 2095 at
>> /home/apw/COD/linux/fs/btrfs/inode.c:2206 record_one_backref+0x3a9/0x420
>> [btrfs]()
>> [17788.691540] Modules linked in: snd_usb_audio
>> [17788.691570] Modules linked in: snd_usb_audio uvcvideo snd_usbmidi_lib
>> videobuf2_vmalloc videobuf2_memops videobuf2_core videodev
>> snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_intel snd_hda_codec
>> snd_hwdep btusb eeepc_wmi asus_wmi sparse_keymap snd_pcm snd_page_alloc
>> k10temp video snd_seq_midi mac_hid snd_seq_midi_event snd_rawmidi i2c_piix4
>> dm_multipath serio_raw snd_seq snd_seq_device snd_timer scsi_dh snd
>> ohci_pci soundcore bluetooth btrfs zlib_deflate libcrc32c raid10 raid456
>> async_memcpy async_raid6_recov async_pq async_xor async_tx xor raid6_pq
>> raid0 multipath linear hid_generic usbhid hid raid1 usb_storage radeon wmi
>> i2c_algo_bit ttm r8169 mii drm_kms_helper ahci drm libahci
>> [17788.691641] uvcvideo<4>[17788.691642] CPU: 2 PID: 2095 Comm:
>> btrfs-endio-wri Not tainted 3.11.0-031100-generic #201309021735
>> [17788.691644] Hardware name: System manufacturer System Product
>> Name/F1A75-V EVO, BIOS 0702 07/12/2011
>> [17788.691645] 000000000000089e ffff88011b091a58 ffffffff81720fca
>> 0000000000001b8b
>> [17788.691650] snd_usbmidi_lib videobuf2_vmalloc videobuf2_memops
>> videobuf2_core videodev snd_hda_codec_realtek snd_hda_codec_hdmi
>> snd_hda_intel snd_hda_codec snd_hwdep btusb eeepc_wmi asus_wmi
>> sparse_keymap snd_pcm snd_page_alloc k10temp video snd_seq_midi mac_hid
>> snd_seq_midi_event snd_rawmidi i2c_piix4 dm_multipath serio_raw snd_seq
>> snd_seq_device snd_timer scsi_dh snd ohci_pci soundcore bluetooth btrfs
>> zlib_deflate libcrc32c raid10 raid456 async_memcpy async_raid6_recov
>> async_pq async_xor async_tx xor raid6_pq raid0 multipath linear hid_generic
>> usbhid hid raid1 usb_storage radeon wmi i2c_algo_bit ttm r8169 mii
>> drm_kms_helper ahci drm libahci
>> [17788.691717]
>> [17788.691717] 0000000000000000 ffff88011b091a98 ffffffff8106534c
>> ffff88011b091a78
>> [17788.691720] ffff8801f3c1aea0 0000000000000001 ffff8801056d2dc0
>> 0000160000000000
>> [17788.691722] Call Trace:
>> [17788.691727] [<ffffffff81720fca>] dump_stack+0x46/0x58
>> [17788.691730] [<ffffffff8106534c>] warn_slowpath_common+0x8c/0xc0
>> [17788.691732] [<ffffffff8106539a>] warn_slowpath_null+0x1a/0x20
>> [17788.691744] [<ffffffffa030c7c9>] record_one_backref+0x3a9/0x420 [btrfs]
>> [17788.691755] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17788.691768] [<ffffffffa035f3f2>] iterate_leaf_refs+0x52/0xc0 [btrfs]
>> [17788.691779] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17788.691790] [<ffffffffa0361e58>] iterate_extent_inodes+0x198/0x270
>> [btrfs]
>> [17788.691801] [<ffffffffa0361fc2>] iterate_inodes_from_logical+0x92/0xb0
>> [btrfs]
>> [17788.691812] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17788.691823] [<ffffffffa030888c>] record_extent_backrefs+0x7c/0xf0
>> [btrfs]
>> [17788.691834] [<ffffffffa03131e4>] relink_file_extents+0x44/0x180 [btrfs]
>> [17788.691845] [<ffffffffa0313455>] btrfs_finish_ordered_io+0x135/0x4d0
>> [btrfs]
>> [17788.691856] [<ffffffffa0313805>] finish_ordered_fn+0x15/0x20 [btrfs]
>> [17788.691867] [<ffffffffa03341d0>] worker_loop+0xa0/0x320 [btrfs]
>> [17788.691878] [<ffffffffa0334130>] ?
>> check_pending_worker_creates.isra.1+0xe0/0xe0 [btrfs]
>> [17788.691881] [<ffffffff81088fe0>] kthread+0xc0/0xd0
>> [17788.691884] [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0
>> [17788.691886] [<ffffffff81735a2c>] ret_from_fork+0x7c/0xb0
>> [17788.691888] [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0
>> [17788.691890] ---[ end trace b632fc27406d343c ]---
>> [17788.691892] CPU: 1 PID: 2093 Comm: btrfs-endio-wri Not tainted
>> 3.11.0-031100-generic #201309021735
>> [17788.691894] Hardware name: System manufacturer System Product
>> Name/F1A75-V EVO, BIOS 0702 07/12/2011
>> [17788.691895] 000000000000089e ffff8801ba3bfa58 ffffffff81720fca
>> 0000000000001bd4
>> [17788.691899] 0000000000000000 ffff8801ba3bfa98 ffffffff8106534c
>> ffff8801ba3bfa78
>> [17788.691901] ffff8801f3c1ae10 0000000000000001 ffff8801056d2dc0
>> 0000160000000000
>> [17788.691903] Call Trace:
>> [17788.691909] [<ffffffff81720fca>] dump_stack+0x46/0x58
>> [17788.691912] [<ffffffff8106534c>] warn_slowpath_common+0x8c/0xc0
>> [17788.691914] [<ffffffff8106539a>] warn_slowpath_null+0x1a/0x20
>> [17788.691925] [<ffffffffa030c7c9>] record_one_backref+0x3a9/0x420 [btrfs]
>> [17788.691937] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17788.691949] [<ffffffffa035f3f2>] iterate_leaf_refs+0x52/0xc0 [btrfs]
>> [17788.691960] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17788.691971] [<ffffffffa0361e58>] iterate_extent_inodes+0x198/0x270
>> [btrfs]
>> [17788.691982] [<ffffffffa0361fc2>] iterate_inodes_from_logical+0x92/0xb0
>> [btrfs]
>> [17788.691993] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17788.692004] [<ffffffffa030888c>] record_extent_backrefs+0x7c/0xf0
>> [btrfs]
>> [17788.692015] [<ffffffffa03131e4>] relink_file_extents+0x44/0x180 [btrfs]
>> [17788.692026] [<ffffffffa0313455>] btrfs_finish_ordered_io+0x135/0x4d0
>> [btrfs]
>> [17788.692037] [<ffffffffa0313805>] finish_ordered_fn+0x15/0x20 [btrfs]
>> [17788.692048] [<ffffffffa03341d0>] worker_loop+0xa0/0x320 [btrfs]
>> [17788.692060] [<ffffffffa0334130>] ?
>> check_pending_worker_creates.isra.1+0xe0/0xe0 [btrfs]
>> [17788.692063] [<ffffffff81088fe0>] kthread+0xc0/0xd0
>> [17788.692065] [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0
>> [17788.692067] [<ffffffff81735a2c>] ret_from_fork+0x7c/0xb0
>> [17788.692070] [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0
>> [17788.692071] ---[ end trace b632fc27406d343d ]---
>> [17788.819780] ------------[ cut here ]------------
>> [17788.819810] WARNING: CPU: 2 PID: 2095 at
>> /home/apw/COD/linux/fs/btrfs/inode.c:2206 record_one_backref+0x3a9/0x420
>> [btrfs]()
>> [17788.819812] Modules linked in: snd_usb_audio uvcvideo snd_usbmidi_lib
>> videobuf2_vmalloc videobuf2_memops videobuf2_core videodev
>> snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_intel snd_hda_codec
>> snd_hwdep btusb eeepc_wmi asus_wmi sparse_keymap snd_pcm snd_page_alloc
>> k10temp video snd_seq_midi mac_hid snd_seq_midi_event snd_rawmidi i2c_piix4
>> dm_multipath serio_raw snd_seq snd_seq_device snd_timer scsi_dh snd
>> ohci_pci soundcore bluetooth btrfs zlib_deflate libcrc32c raid10 raid456
>> async_memcpy async_raid6_recov async_pq async_xor async_tx xor raid6_pq
>> raid0 multipath linear hid_generic usbhid hid raid1 usb_storage radeon wmi
>> i2c_algo_bit ttm r8169 mii drm_kms_helper ahci drm libahci
>> [17788.819843] CPU: 2 PID: 2095 Comm: btrfs-endio-wri Tainted: G
>> W 3.11.0-031100-generic #201309021735
>> [17788.819845] Hardware name: System manufacturer System Product
>> Name/F1A75-V EVO, BIOS 0702 07/12/2011
>> [17788.819846] 000000000000089e ffff88011b091a58 ffffffff81720fca
>> 0000000000003ac9
>> [17788.819849] 0000000000000000 ffff88011b091a98 ffffffff8106534c
>> ffff88011b091a78
>> [17788.819850] ffff8801f3c1aea0 0000000000000001 ffff8801056d2dc0
>> 0000160000000000
>> [17788.819852] Call Trace:
>> [17788.819858] [<ffffffff81720fca>] dump_stack+0x46/0x58
>> [17788.819862] [<ffffffff8106534c>] warn_slowpath_common+0x8c/0xc0
>> [17788.819864] [<ffffffff8106539a>] warn_slowpath_null+0x1a/0x20
>> [17788.819875] [<ffffffffa030c7c9>] record_one_backref+0x3a9/0x420 [btrfs]
>> [17788.819886] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17788.819898] [<ffffffffa035f3f2>] iterate_leaf_refs+0x52/0xc0 [btrfs]
>> [17788.819909] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17788.819920] [<ffffffffa0361e58>] iterate_extent_inodes+0x198/0x270
>> [btrfs]
>> [17788.819931] [<ffffffffa0361fc2>] iterate_inodes_from_logical+0x92/0xb0
>> [btrfs]
>> [17788.819942] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17788.819952] [<ffffffffa030888c>] record_extent_backrefs+0x7c/0xf0
>> [btrfs]
>> [17788.819964] [<ffffffffa03131e4>] relink_file_extents+0x44/0x180 [btrfs]
>> [17788.819974] [<ffffffffa0313455>] btrfs_finish_ordered_io+0x135/0x4d0
>> [btrfs]
>> [17788.819986] [<ffffffffa0313805>] finish_ordered_fn+0x15/0x20 [btrfs]
>> [17788.819997] [<ffffffffa03341d0>] worker_loop+0xa0/0x320 [btrfs]
>> [17788.820008] [<ffffffffa0334130>] ?
>> check_pending_worker_creates.isra.1+0xe0/0xe0 [btrfs]
>> [17788.820011] [<ffffffff81088fe0>] kthread+0xc0/0xd0
>> [17788.820013] [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0
>> [17788.820016] [<ffffffff81735a2c>] ret_from_fork+0x7c/0xb0
>> [17788.820018] [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0
>> [17788.820019] ---[ end trace b632fc27406d343e ]---
>> [17831.109598] ------------[ cut here ]------------
>> [17831.109627] WARNING: CPU: 1 PID: 2087 at
>> /home/apw/COD/linux/fs/btrfs/inode.c:2206 record_one_backref+0x3a9/0x420
>> [btrfs]()
>> [17831.109629] Modules linked in: snd_usb_audio uvcvideo snd_usbmidi_lib
>> videobuf2_vmalloc videobuf2_memops videobuf2_core videodev
>> snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_intel snd_hda_codec
>> snd_hwdep btusb eeepc_wmi asus_wmi sparse_keymap snd_pcm snd_page_alloc
>> k10temp video snd_seq_midi mac_hid snd_seq_midi_event snd_rawmidi i2c_piix4
>> dm_multipath serio_raw snd_seq snd_seq_device snd_timer scsi_dh snd
>> ohci_pci soundcore bluetooth btrfs zlib_deflate libcrc32c raid10 raid456
>> async_memcpy async_raid6_recov async_pq async_xor async_tx xor raid6_pq
>> raid0 multipath linear hid_generic usbhid hid raid1 usb_storage radeon wmi
>> i2c_algo_bit ttm r8169 mii drm_kms_helper ahci drm libahci
>> [17831.109660] CPU: 1 PID: 2087 Comm: btrfs-endio-wri Tainted: G
>> W 3.11.0-031100-generic #201309021735
>> [17831.109661] Hardware name: System manufacturer System Product
>> Name/F1A75-V EVO, BIOS 0702 07/12/2011
>> [17831.109663] 000000000000089e ffff8801cee7fa58 ffffffff81720fca
>> 00000000000059a5
>> [17831.109665] 0000000000000000 ffff8801cee7fa98 ffffffff8106534c
>> ffff8801cee7fa78
>> [17831.109667] ffff8801f3c1a5a0 0000000000000001 ffff88015e95cdc0
>> 0000160000000000
>> [17831.109669] Call Trace:
>> [17831.109674] [<ffffffff81720fca>] dump_stack+0x46/0x58
>> [17831.109677] [<ffffffff8106534c>] warn_slowpath_common+0x8c/0xc0
>> [17831.109679] [<ffffffff8106539a>] warn_slowpath_null+0x1a/0x20
>> [17831.109691] [<ffffffffa030c7c9>] record_one_backref+0x3a9/0x420 [btrfs]
>> [17831.109702] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17831.109714] [<ffffffffa035f3f2>] iterate_leaf_refs+0x52/0xc0 [btrfs]
>> [17831.109725] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17831.109736] [<ffffffffa0361e58>] iterate_extent_inodes+0x198/0x270
>> [btrfs]
>> [17831.109747] [<ffffffffa0361fc2>] iterate_inodes_from_logical+0x92/0xb0
>> [btrfs]
>> [17831.109758] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17831.109769] [<ffffffffa030888c>] record_extent_backrefs+0x7c/0xf0
>> [btrfs]
>> [17831.109780] [<ffffffffa03131e4>] relink_file_extents+0x44/0x180 [btrfs]
>> [17831.109791] [<ffffffffa0313455>] btrfs_finish_ordered_io+0x135/0x4d0
>> [btrfs]
>> [17831.109802] [<ffffffffa0313805>] finish_ordered_fn+0x15/0x20 [btrfs]
>> [17831.109813] [<ffffffffa03341d0>] worker_loop+0xa0/0x320 [btrfs]
>> [17831.109824] [<ffffffffa0334130>] ?
>> check_pending_worker_creates.isra.1+0xe0/0xe0 [btrfs]
>> [17831.109841] [<ffffffff81088fe0>] kthread+0xc0/0xd0
>> [17831.109843] [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0
>> [17831.109846] [<ffffffff81735a2c>] ret_from_fork+0x7c/0xb0
>> [17831.109848] [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0
>> [17831.109849] ---[ end trace b632fc27406d343f ]---
>> [17831.312062] ------------[ cut here ]------------
>> [17831.312091] WARNING: CPU: 1 PID: 2087 at
>> /home/apw/COD/linux/fs/btrfs/inode.c:2206 record_one_backref+0x3a9/0x420
>> [btrfs]()
>> [17831.312092] Modules linked in: snd_usb_audio uvcvideo snd_usbmidi_lib
>> videobuf2_vmalloc videobuf2_memops videobuf2_core videodev
>> snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_intel snd_hda_codec
>> snd_hwdep btusb eeepc_wmi asus_wmi sparse_keymap snd_pcm snd_page_alloc
>> k10temp video snd_seq_midi mac_hid snd_seq_midi_event snd_rawmidi i2c_piix4
>> dm_multipath serio_raw snd_seq snd_seq_device snd_timer scsi_dh snd
>> ohci_pci soundcore bluetooth btrfs zlib_deflate libcrc32c raid10 raid456
>> async_memcpy async_raid6_recov async_pq async_xor async_tx xor raid6_pq
>> raid0 multipath linear hid_generic usbhid hid raid1 usb_storage radeon wmi
>> i2c_algo_bit ttm r8169 mii drm_kms_helper ahci drm libahci
>> [17831.312123] CPU: 1 PID: 2087 Comm: btrfs-endio-wri Tainted: G
>> W 3.11.0-031100-generic #201309021735
>> [17831.312125] Hardware name: System manufacturer System Product
>> Name/F1A75-V EVO, BIOS 0702 07/12/2011
>> [17831.312126] 000000000000089e ffff8801cee7fa58 ffffffff81720fca
>> 0000000000005bbf
>> [17831.312129] 0000000000000000 ffff8801cee7fa98 ffffffff8106534c
>> ffff8801cee7fa78
>> [17831.312130] ffff8801f3c1a5a0 0000000000000001 ffff88010a524a00
>> 0000160000000000
>> [17831.312133] Call Trace:
>> [17831.312138] [<ffffffff81720fca>] dump_stack+0x46/0x58
>> [17831.312141] [<ffffffff8106534c>] warn_slowpath_common+0x8c/0xc0
>> [17831.312143] [<ffffffff8106539a>] warn_slowpath_null+0x1a/0x20
>> [17831.312155] [<ffffffffa030c7c9>] record_one_backref+0x3a9/0x420 [btrfs]
>> [17831.312166] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17831.312178] [<ffffffffa035f3f2>] iterate_leaf_refs+0x52/0xc0 [btrfs]
>> [17831.312189] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17831.312200] [<ffffffffa0361e58>] iterate_extent_inodes+0x198/0x270
>> [btrfs]
>> [17831.312211] [<ffffffffa0361fc2>] iterate_inodes_from_logical+0x92/0xb0
>> [btrfs]
>> [17831.312222] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17831.312233] [<ffffffffa030888c>] record_extent_backrefs+0x7c/0xf0
>> [btrfs]
>> [17831.312244] [<ffffffffa03131e4>] relink_file_extents+0x44/0x180 [btrfs]
>> [17831.312255] [<ffffffffa0313455>] btrfs_finish_ordered_io+0x135/0x4d0
>> [btrfs]
>> [17831.312266] [<ffffffffa0313805>] finish_ordered_fn+0x15/0x20 [btrfs]
>> [17831.312277] [<ffffffffa03341d0>] worker_loop+0xa0/0x320 [btrfs]
>> [17831.312288] [<ffffffffa0334130>] ?
>> check_pending_worker_creates.isra.1+0xe0/0xe0 [btrfs]
>> [17831.312291] [<ffffffff81088fe0>] kthread+0xc0/0xd0
>> [17831.312294] [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0
>> [17831.312296] [<ffffffff81735a2c>] ret_from_fork+0x7c/0xb0
>> [17831.312298] [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0
>> [17831.312300] ---[ end trace b632fc27406d3440 ]---
>> [17838.564043] ------------[ cut here ]------------
>> [17838.564072] WARNING: CPU: 0 PID: 2093 at
>> /home/apw/COD/linux/fs/btrfs/inode.c:2206 record_one_backref+0x3a9/0x420
>> [btrfs]()
>> [17838.564073] Modules linked in: snd_usb_audio uvcvideo snd_usbmidi_lib
>> videobuf2_vmalloc videobuf2_memops videobuf2_core videodev
>> snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_intel snd_hda_codec
>> snd_hwdep btusb eeepc_wmi asus_wmi sparse_keymap snd_pcm snd_page_alloc
>> k10temp video snd_seq_midi mac_hid snd_seq_midi_event snd_rawmidi i2c_piix4
>> dm_multipath serio_raw snd_seq snd_seq_device snd_timer scsi_dh snd
>> ohci_pci soundcore bluetooth btrfs zlib_deflate libcrc32c raid10 raid456
>> async_memcpy async_raid6_recov async_pq async_xor async_tx xor raid6_pq
>> raid0 multipath linear hid_generic usbhid hid raid1 usb_storage radeon wmi
>> i2c_algo_bit ttm r8169 mii drm_kms_helper ahci drm libahci
>> [17838.564104] CPU: 0 PID: 2093 Comm: btrfs-endio-wri Tainted: G
>> W 3.11.0-031100-generic #201309021735
>> [17838.564106] Hardware name: System manufacturer System Product
>> Name/F1A75-V EVO, BIOS 0702 07/12/2011
>> [17838.564107] 000000000000089e ffff8801ba3bfa58 ffffffff81720fca
>> 0000000000005dd9
>> [17838.564109] 0000000000000000 ffff8801ba3bfa98 ffffffff8106534c
>> ffff8801ba3bfa78
>> [17838.564111] ffff8801ebe98ea0 0000000000000001 ffff8801a7919900
>> 0000160000000000
>> [17838.564113] Call Trace:
>> [17838.564119] [<ffffffff81720fca>] dump_stack+0x46/0x58
>> [17838.564122] [<ffffffff8106534c>] warn_slowpath_common+0x8c/0xc0
>> [17838.564124] [<ffffffff8106539a>] warn_slowpath_null+0x1a/0x20
>> [17838.564135] [<ffffffffa030c7c9>] record_one_backref+0x3a9/0x420 [btrfs]
>> [17838.564146] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17838.564158] [<ffffffffa035f3f2>] iterate_leaf_refs+0x52/0xc0 [btrfs]
>> [17838.564169] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17838.564181] [<ffffffffa0361e58>] iterate_extent_inodes+0x198/0x270
>> [btrfs]
>> [17838.564192] [<ffffffffa0361fc2>] iterate_inodes_from_logical+0x92/0xb0
>> [btrfs]
>> [17838.564203] [<ffffffffa030c420>] ? btrfs_submit_direct+0x190/0x190
>> [btrfs]
>> [17838.564214] [<ffffffffa030888c>] record_extent_backrefs+0x7c/0xf0
>> [btrfs]
>> [17838.564225] [<ffffffffa03131e4>] relink_file_extents+0x44/0x180 [btrfs]
>> [17838.564236] [<ffffffffa0313455>] btrfs_finish_ordered_io+0x135/0x4d0
>> [btrfs]
>> [17838.564247] [<ffffffffa0313805>] finish_ordered_fn+0x15/0x20 [btrfs]
>> [17838.564258] [<ffffffffa03341d0>] worker_loop+0xa0/0x320 [btrfs]
>> [17838.564269] [<ffffffffa0334130>] ?
>> check_pending_worker_creates.isra.1+0xe0/0xe0 [btrfs]
>> [17838.564272] [<ffffffff81088fe0>] kthread+0xc0/0xd0
>> [17838.564274] [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0
>> [17838.564277] [<ffffffff81735a2c>] ret_from_fork+0x7c/0xb0
>> [17838.564279] [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0
>> [17838.564281] ---[ end trace b632fc27406d3441 ]---
>>
>>
>> Is there some problem?
>>
>> Regards,
>>
>> Marco L. Crociani
>> --
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>>
>
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