Ubuntu
linux package

Lage samba file transfers block btrfs to hung task

Bug #1614887 reported by S. W. on 2016-08-19

This bug affects 2 people

Affects		Status	Importance	Assigned to	Milestone
	linux (Ubuntu)	Confirmed	Medium	Unassigned

Bug Description

this bug occurs when user transfer big files ~1gb to the samba server on xenial/wily

on wily this problem was NOT showing with samba 4.2 (i guess) until samba was also upgraded to 4.3.

the samba runs on a KVM VM

samba version: 4.3.9+dfsg-0ubuntu0.16.04.

[ 30.171211] zram: Added device: zram0
[ 30.356301] zram0: detected capacity change from 0 to 1518252032
[ 30.668855] Adding 1482664k swap on /dev/zram0. Priority:5 extents:1 across:1482664k SSFS
[ 35.608271] [drm:qxl_enc_commit [qxl]] *ERROR* head number too large or missing monitors config: ffffc90000e30000, 0
[ 45.008364] Non-volatile memory driver v1.3
[65636.820111] INFO: task btrfs-cleaner:631 blocked for more than 120 seconds.
[65636.820128] Not tainted 4.4.0-36-generic #55-Ubuntu
[65636.820129] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[65636.820131] btrfs-cleaner D ffff88005ae93ce8 0 631 2 0x00000000
[65636.820137] ffff88005ae93ce8 ffff8800bbb86400 ffff8801b0dc3e80 ffff8801b0dc2580
[65636.820139] ffff88005ae94000 ffff8801851971f0 ffff880185197000 ffff8801851971f0
[65636.820141] 0000000000000001 ffff88005ae93d00 ffffffff81829ec5 ffff8801b7fc4000
[65636.820143] Call Trace:
[65636.820182] [<ffffffff81829ec5>] schedule+0x35/0x80
[65636.820360] [<ffffffffc0170fd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[65636.820395] [<ffffffff810c3cb0>] ? wake_atomic_t_function+0x60/0x60
[65636.820409] [<ffffffffc01728f5>] start_transaction+0x2c5/0x4b0 [btrfs]
[65636.820434] [<ffffffffc0172af8>] btrfs_start_transaction+0x18/0x20 [btrfs]
[65636.820452] [<ffffffffc015adcf>] btrfs_drop_snapshot+0x7f/0x830 [btrfs]
[65636.820454] [<ffffffff81829816>] ? __schedule+0x3b6/0xa30
[65636.820467] [<ffffffffc0171b02>] btrfs_clean_one_deleted_snapshot+0xb2/0x100 [btrfs]
[65636.820480] [<ffffffffc016a3cf>] cleaner_kthread+0xcf/0x220 [btrfs]
[65636.820493] [<ffffffffc016a300>] ? check_leaf+0x360/0x360 [btrfs]
[65636.820497] [<ffffffff810a0808>] kthread+0xd8/0xf0
[65636.820499] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[65636.820505] [<ffffffff8182e34f>] ret_from_fork+0x3f/0x70
[65636.820507] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[65636.820550] INFO: task kworker/u4:1:7760 blocked for more than 120 seconds.
[65636.820551] Not tainted 4.4.0-36-generic #55-Ubuntu
[65636.820558] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[65636.820559] kworker/u4:1 D ffff880008433c48 0 7760 2 0x00000000
[65636.820579] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[65636.820581] ffff880008433c48 0000000000000040 ffff8800b9d98c80 ffff8801b51a9900
[65636.820582] ffff880008434000 ffff8801851941f0 ffff880185194000 ffff8801851941f0
[65636.820584] 0000000000000001 ffff880008433c60 ffffffff81829ec5 ffff8801b7fc4000
[65636.820586] Call Trace:
[65636.820588] [<ffffffff81829ec5>] schedule+0x35/0x80
[65636.820602] [<ffffffffc0170fd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[65636.820604] [<ffffffff810c3cb0>] ? wake_atomic_t_function+0x60/0x60
[65636.820620] [<ffffffffc01728a5>] start_transaction+0x275/0x4b0 [btrfs]
[65636.820650] [<ffffffffc0172b37>] btrfs_join_transaction+0x17/0x20 [btrfs]
[65636.820667] [<ffffffffc017b2a5>] btrfs_finish_ordered_io+0x435/0x650 [btrfs]
[65636.820692] [<ffffffffc017b785>] finish_ordered_fn+0x15/0x20 [btrfs]
[65636.820718] [<ffffffffc01a3eba>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs]
[65636.820723] [<ffffffff810abcc7>] ? try_to_wake_up+0x47/0x3b0
[65636.820741] [<ffffffffc01a416e>] btrfs_endio_write_helper+0xe/0x10 [btrfs]
[65636.820753] [<ffffffff8109a2c5>] process_one_work+0x165/0x480
[65636.820755] [<ffffffff8109a62b>] worker_thread+0x4b/0x4c0
[65636.820757] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480
[65636.820758] [<ffffffff810a0808>] kthread+0xd8/0xf0
[65636.820760] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[65636.820761] [<ffffffff8182e34f>] ret_from_fork+0x3f/0x70
[65636.820763] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[65636.820770] INFO: task kworker/u4:2:7814 blocked for more than 120 seconds.
[65636.820771] Not tainted 4.4.0-36-generic #55-Ubuntu
[65636.820772] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[65636.820773] kworker/u4:2 D ffff880102027c48 0 7814 2 0x00000000
[65636.820848] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[65636.820850] ffff880102027c48 0000000000000040 ffff8801b51ae400 ffff8801b51a8c80
[65636.820852] ffff880102028000 ffff8801851941f0 ffff880185194000 ffff8801851941f0
[65636.820853] 0000000000000001 ffff880102027c60 ffffffff81829ec5 ffff8801b7fc4000
[65636.820855] Call Trace:
[65636.820857] [<ffffffff81829ec5>] schedule+0x35/0x80
[65636.820877] [<ffffffffc0170fd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[65636.820879] [<ffffffff810c3cb0>] ? wake_atomic_t_function+0x60/0x60
[65636.820893] [<ffffffffc01728a5>] start_transaction+0x275/0x4b0 [btrfs]
[65636.820908] [<ffffffffc0172b37>] btrfs_join_transaction+0x17/0x20 [btrfs]
[65636.820922] [<ffffffffc017b2a5>] btrfs_finish_ordered_io+0x435/0x650 [btrfs]
[65636.820934] [<ffffffff813b9ade>] ? bio_free+0x4e/0x60
[65636.820936] [<ffffffff813b9b13>] ? bio_put+0x23/0x30
[65636.820950] [<ffffffffc017b785>] finish_ordered_fn+0x15/0x20 [btrfs]
[65636.820964] [<ffffffffc01a3eba>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs]
[65636.820966] [<ffffffff810abcc7>] ? try_to_wake_up+0x47/0x3b0
[65636.820999] [<ffffffffc01a416e>] btrfs_endio_write_helper+0xe/0x10 [btrfs]
[65636.821002] [<ffffffff8109a2c5>] process_one_work+0x165/0x480
[65636.821003] [<ffffffff8109a62b>] worker_thread+0x4b/0x4c0
[65636.821005] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480
[65636.821007] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480
[65636.821008] [<ffffffff810a0808>] kthread+0xd8/0xf0
[65636.821010] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[65636.821012] [<ffffffff8182e34f>] ret_from_fork+0x3f/0x70
[65636.821013] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[65636.821016] INFO: task kworker/u4:3:7843 blocked for more than 120 seconds.
[65636.821017] Not tainted 4.4.0-36-generic #55-Ubuntu
[65636.821018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[65636.821019] kworker/u4:3 D ffff8800082abc48 0 7843 2 0x00000000
[65636.821047] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[65636.821048] ffff8800082abc48 0000000000000040 ffff8801b51ae400 ffff8801b6a06400
[65636.821050] ffff8800082ac000 ffff8801851941f0 ffff880185194000 ffff8801851941f0
[65636.821051] 0000000000000001 ffff8800082abc60 ffffffff81829ec5 ffff8801b7fc4000
[65636.821053] Call Trace:
[65636.821055] [<ffffffff81829ec5>] schedule+0x35/0x80
[65636.821069] [<ffffffffc0170fd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[65636.821071] [<ffffffff810c3cb0>] ? wake_atomic_t_function+0x60/0x60
[65636.821084] [<ffffffffc01728a5>] start_transaction+0x275/0x4b0 [btrfs]
[65636.821104] [<ffffffffc0172b37>] btrfs_join_transaction+0x17/0x20 [btrfs]
[65636.821118] [<ffffffffc017b2a5>] btrfs_finish_ordered_io+0x435/0x650 [btrfs]
[65636.821131] [<ffffffffc017b785>] finish_ordered_fn+0x15/0x20 [btrfs]
[65636.821145] [<ffffffffc01a3eba>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs]
[65636.821147] [<ffffffff810abcc7>] ? try_to_wake_up+0x47/0x3b0
[65636.821161] [<ffffffffc01a416e>] btrfs_endio_write_helper+0xe/0x10 [btrfs]
[65636.821163] [<ffffffff8109a2c5>] process_one_work+0x165/0x480
[65636.821165] [<ffffffff8109a62b>] worker_thread+0x4b/0x4c0
[65636.821167] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480
[65636.821168] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480
[65636.821170] [<ffffffff810a0808>] kthread+0xd8/0xf0
[65636.821171] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[65636.821173] [<ffffffff8182e34f>] ret_from_fork+0x3f/0x70
[65636.821175] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[65636.821176] INFO: task cupsd:7983 blocked for more than 120 seconds.
[65636.821178] Not tainted 4.4.0-36-generic #55-Ubuntu
[65636.821179] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[65636.821179] cupsd D ffff880005d67d48 0 7983 1 0x00000000
[65636.821195] ffff880005d67d48 0001880000000001 ffff8801b0dc2580 ffff8800bbb86400
[65636.821197] ffff880005d68000 ffff8801851941f0 ffff880185194000 ffff8801851941f0
[65636.821198] 0000000000000001 ffff880005d67d60 ffffffff81829ec5 ffff8801b7fc4000
[65636.821200] Call Trace:
[65636.821202] [<ffffffff81829ec5>] schedule+0x35/0x80
[65636.821221] [<ffffffffc0170fd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[65636.821223] [<ffffffff810c3cb0>] ? wake_atomic_t_function+0x60/0x60
[65636.821236] [<ffffffffc01728f5>] start_transaction+0x2c5/0x4b0 [btrfs]
[65636.821250] [<ffffffffc0172f78>] btrfs_start_transaction_fallback_global_rsv+0x28/0xc0 [btrfs]
[65636.821263] [<ffffffffc017bf45>] btrfs_unlink+0x35/0xb0 [btrfs]
[65636.821280] [<ffffffff8121a151>] vfs_unlink+0xf1/0x1a0
[65636.821288] [<ffffffff8138d1eb>] ? apparmor_path_unlink+0x1b/0x20
[65636.821291] [<ffffffff8121d749>] do_unlinkat+0x279/0x2d0
[65636.821293] [<ffffffff8121e206>] SyS_unlink+0x16/0x20
[65636.821295] [<ffffffff8182dfb2>] entry_SYSCALL_64_fastpath+0x16/0x71
[65636.821298] INFO: task kworker/u4:6:8029 blocked for more than 120 seconds.
[65636.821299] Not tainted 4.4.0-36-generic #55-Ubuntu
[65636.821300] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[65636.821301] kworker/u4:6 D ffff8800053bfcc8 0 8029 2 0x00000000
[65636.821323] Workqueue: btrfs-extent-refs btrfs_extent_refs_helper [btrfs]
[65636.821324] ffff8800053bfcc8 ffffffff811908e9 ffff8800bbb86400 ffff8801b51ad780
[65636.821326] ffff8800053c0000 ffff8801851971f0 ffff880185197000 ffff8801851971f0
[65636.821328] 0000000000000001 ffff8800053bfce0 ffffffff81829ec5 ffff8801b7fc4000
[65636.821329] Call Trace:
[65636.821345] [<ffffffff811908e9>] ? mempool_free+0x29/0x80
[65636.821348] [<ffffffff81829ec5>] schedule+0x35/0x80
[65636.821366] [<ffffffffc0170fd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[65636.821368] [<ffffffff810c3cb0>] ? wake_atomic_t_function+0x60/0x60
[65636.821381] [<ffffffffc01728a5>] start_transaction+0x275/0x4b0 [btrfs]
[65636.821406] [<ffffffffc0172b37>] btrfs_join_transaction+0x17/0x20 [btrfs]
[65636.821418] [<ffffffffc015cc58>] delayed_ref_async_start+0x18/0x90 [btrfs]
[65636.821432] [<ffffffffc01a3eba>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs]
[65636.821446] [<ffffffffc01a411e>] btrfs_extent_refs_helper+0xe/0x10 [btrfs]
[65636.821454] [<ffffffff8109a2c5>] process_one_work+0x165/0x480
[65636.821456] [<ffffffff8109a62b>] worker_thread+0x4b/0x4c0
[65636.821457] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480
[65636.821459] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480
[65636.821460] [<ffffffff810a0808>] kthread+0xd8/0xf0
[65636.821462] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[65636.821464] [<ffffffff8182e34f>] ret_from_fork+0x3f/0x70
[65636.821465] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0
[78275.687923] cfg80211: World regulatory domain updated:
[78275.687930] cfg80211: DFS Master region: unset

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-generic-lts-xenial (not installed)
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: wvk 8774 F.... pulseaudio
CurrentDesktop: MATE
Date: Fri Aug 19 11:16:39 2016
HibernationDevice: RESUME=UUID=a3e458ea-200f-4779-a1e5-874bbca3fd2f
InstallationDate: Installed on 2015-08-24 (360 days ago)
InstallationMedia: Ubuntu-Server 15.04 "Vivid Vervet" - Release amd64 (20150422)
IwConfig:
lo no wireless extensions.

eth0 no wireless extensions.
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
ProcFB: 0 qxldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.4.0-36-generic root=UUID=f7f34b00-862b-45a7-9cdb-ee1546aac7db ro rootflags=subvol=@
RelatedPackageVersions:
linux-restricted-modules-4.4.0-36-generic N/A
linux-backports-modules-4.4.0-36-generic N/A
linux-firmware 1.157.3
RfKill:

SourcePackage: linux
UpgradeStatus: Upgraded to xenial on 2015-10-23 (300 days ago)
dmi.bios.date: 01/01/2011
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-utopic:cvnBochs:ct1:cvr:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-utopic
dmi.sys.vendor: QEMU

Tags:

Revision history for this message

S. W. (cebit2006) wrote on 2016-08-19:

AlsaInfo.txt Edit (10.9 KiB, text/plain; charset="utf-8")
CRDA.txt Edit (392 bytes, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (49.8 KiB, text/plain; charset="utf-8")
JournalErrors.txt Edit (24.6 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (7.6 KiB, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (704 bytes, text/plain; charset="utf-8")
ProcEnviron.txt Edit (103 bytes, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.7 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (2.6 KiB, text/plain; charset="utf-8")
PulseList.txt Edit (22.0 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (83.1 KiB, text/plain; charset="utf-8")
WifiSyslog.txt Edit (70.4 KiB, text/plain; charset="utf-8")

Revision history for this message

Brad Figg (brad-figg) wrote on 2016-08-19: Status changed to Confirmed

This change was made by a bot.

Changed in linux (Ubuntu):
status:	New → Confirmed

Revision history for this message

S. W. (cebit2006) wrote on 2016-08-19:

i also confirmed this bug with the latest v4.7.1 mainline build from the ubuntu ppa

Revision history for this message

Joseph Salisbury (jsalisbury) wrote on 2016-08-22:

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.8 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.8-rc3

tags:

added: kernel-da-key needs-bisect

Revision history for this message

Joseph Salisbury (jsalisbury) wrote on 2016-08-22:

Also, does the bug go away if you boot back into prior kernel versions?

Changed in linux (Ubuntu):
importance:	Undecided → Medium
status:	Confirmed → Incomplete

Revision history for this message

Launchpad Janitor (janitor) wrote on 2016-10-22:

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

Changed in linux (Ubuntu):
status:	Incomplete → Expired

Revision history for this message

S. W. (cebit2006) wrote on 2016-10-27:

Download full text (15.5 KiB)

still not fixed

INFO: task smbd:7543 blocked for more than 120 seconds.
[39600.198893] Not tainted 4.4.0-46-generic #67-Ubuntu
[39600.198894] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[39600.198896] smbd D ffff88000970be18 0 7543 1346 0x00000000
[39600.198902] ffff88000970be18 0000000200000010 ffffffff81e11500 ffff8801539c5780
[39600.198904] ffff88000970c000 ffff8800ba7eb524 ffff8801539c5780 00000000ffffffff
[39600.198906] ffff8800ba7eb528 ffff88000970be30 ffffffff81830795 ffff8800ba7eb520
[39600.198908] Call Trace:
[39600.198942] [<ffffffff81830795>] schedule+0x35/0x80
[39600.198944] [<ffffffff81830a3e>] schedule_preempt_disabled+0xe/0x10
[39600.198946] [<ffffffff81832679>] __mutex_lock_slowpath+0xb9/0x130
[39600.198948] [<ffffffff8183270f>] mutex_lock+0x1f/0x30
[39600.198967] [<ffffffff8121df4b>] do_unlinkat+0x12b/0x2d0
[39600.198969] [<ffffffff8121eb56>] SyS_unlink+0x16/0x20
[39600.198974] [<ffffffff81834872>] entry_SYSCALL_64_fastpath+0x16/0x71
[39720.198606] INFO: task btrfs-cleaner:212 blocked for more than 120 seconds.
[39720.198614] Not tainted 4.4.0-46-generic #67-Ubuntu
[39720.198616] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[39720.198619] btrfs-cleaner D ffff8801539bfce8 0 212 2 0x00000000
[39720.198625] ffff8801539bfce8 ffff8801bfd16d00 ffff8801b8228000 ffff8801539c0000
[39720.198629] ffff8801539c0000 ffff8800a7ed11f0 ffff8800a7ed1000 ffff8800a7ed11f0
[39720.198632] 0000000000000001 ffff8801539bfd00 ffffffff81830795 ffff8801b797ef30
[39720.198636] Call Trace:
[39720.198647] [<ffffffff81830795>] schedule+0x35/0x80
[39720.198783] [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[39720.198802] [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60
[39720.198815] [<ffffffffc017f8f5>] start_transaction+0x2c5/0x4b0 [btrfs]
[39720.198828] [<ffffffffc017faf8>] btrfs_start_transaction+0x18/0x20 [btrfs]
[39720.198839] [<ffffffffc0167dcf>] btrfs_drop_snapshot+0x7f/0x830 [btrfs]
[39720.198841] [<ffffffff818300e6>] ? __schedule+0x3b6/0xa30
[39720.198854] [<ffffffffc017eb02>] btrfs_clean_one_deleted_snapshot+0xb2/0x100 [btrfs]
[39720.198866] [<ffffffffc01773cf>] cleaner_kthread+0xcf/0x220 [btrfs]
[39720.198878] [<ffffffffc0177300>] ? check_leaf+0x360/0x360 [btrfs]
[39720.198914] [<ffffffff810a09e8>] kthread+0xd8/0xf0
[39720.198917] [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
[39720.198919] [<ffffffff81834c0f>] ret_from_fork+0x3f/0x70
[39720.198921] [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
[39720.198938] INFO: task nmbd:1308 blocked for more than 120 seconds.
[39720.198940] Not tainted 4.4.0-46-generic #67-Ubuntu
[39720.198941] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[39720.198942] nmbd D ffff8801b6277ac8 0 1308 1 0x00000000
[39720.198945] ffff8801b6277ac8 0000000000000286 ffff8801539c0c80 ffff8801b4a52580
[39720.198947] ffff8801b6278000 ffff8801bfd16d00 7fffffffffffffff ffffffff81830f90
[39720.198949] ffff8801b6277c20 ffff8801b6277ae0 ffffffff81830795 0000000000000000
[39720.198951] Call Trace:
[39...

still not fixed
 
INFO: task smbd:7543 blocked for more than 120 seconds.
[39600.198893]       Not tainted 4.4.0-46-generic #67-Ubuntu
[39600.198894] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[39600.198896] smbd            D ffff88000970be18     0  7543   1346 0x00000000
[39600.198902]  ffff88000970be18 0000000200000010 ffffffff81e11500 ffff8801539c5780
[39600.198904]  ffff88000970c000 ffff8800ba7eb524 ffff8801539c5780 00000000ffffffff
[39600.198906]  ffff8800ba7eb528 ffff88000970be30 ffffffff81830795 ffff8800ba7eb520
[39600.198908] Call Trace:
[39600.198942]  [<ffffffff81830795>] schedule+0x35/0x80
[39600.198944]  [<ffffffff81830a3e>] schedule_preempt_disabled+0xe/0x10
[39600.198946]  [<ffffffff81832679>] __mutex_lock_slowpath+0xb9/0x130
[39600.198948]  [<ffffffff8183270f>] mutex_lock+0x1f/0x30
[39600.198967]  [<ffffffff8121df4b>] do_unlinkat+0x12b/0x2d0
[39600.198969]  [<ffffffff8121eb56>] SyS_unlink+0x16/0x20
[39600.198974]  [<ffffffff81834872>] entry_SYSCALL_64_fastpath+0x16/0x71
[39720.198606] INFO: task btrfs-cleaner:212 blocked for more than 120 seconds.
[39720.198614]       Not tainted 4.4.0-46-generic #67-Ubuntu
[39720.198616] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[39720.198619] btrfs-cleaner   D ffff8801539bfce8     0   212      2 0x00000000
[39720.198625]  ffff8801539bfce8 ffff8801bfd16d00 ffff8801b8228000 ffff8801539c0000
[39720.198629]  ffff8801539c0000 ffff8800a7ed11f0 ffff8800a7ed1000 ffff8800a7ed11f0
[39720.198632]  0000000000000001 ffff8801539bfd00 ffffffff81830795 ffff8801b797ef30
[39720.198636] Call Trace:
[39720.198647]  [<ffffffff81830795>] schedule+0x35/0x80
[39720.198783]  [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[39720.198802]  [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60
[39720.198815]  [<ffffffffc017f8f5>] start_transaction+0x2c5/0x4b0 [btrfs]
[39720.198828]  [<ffffffffc017faf8>] btrfs_start_transaction+0x18/0x20 [btrfs]
[39720.198839]  [<ffffffffc0167dcf>] btrfs_drop_snapshot+0x7f/0x830 [btrfs]
[39720.198841]  [<ffffffff818300e6>] ? __schedule+0x3b6/0xa30
[39720.198854]  [<ffffffffc017eb02>] btrfs_clean_one_deleted_snapshot+0xb2/0x100 [btrfs]
[39720.198866]  [<ffffffffc01773cf>] cleaner_kthread+0xcf/0x220 [btrfs]
[39720.198878]  [<ffffffffc0177300>] ? check_leaf+0x360/0x360 [btrfs]
[39720.198914]  [<ffffffff810a09e8>] kthread+0xd8/0xf0
[39720.198917]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
[39720.198919]  [<ffffffff81834c0f>] ret_from_fork+0x3f/0x70
[39720.198921]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
[39720.198938] INFO: task nmbd:1308 blocked for more than 120 seconds.
[39720.198940]       Not tainted 4.4.0-46-generic #67-Ubuntu
[39720.198941] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[39720.198942] nmbd            D ffff8801b6277ac8     0  1308      1 0x00000000
[39720.198945]  ffff8801b6277ac8 0000000000000286 ffff8801539c0c80 ffff8801b4a52580
[39720.198947]  ffff8801b6278000 ffff8801bfd16d00 7fffffffffffffff ffffffff81830f90
[39720.198949]  ffff8801b6277c20 ffff8801b6277ae0 ffffffff81830795 0000000000000000
[39720.198951] Call Trace:
[39720.198953]  [<ffffffff81830f90>] ? bit_wait+0x60/0x60
[39720.198954]  [<ffffffff81830795>] schedule+0x35/0x80
[39720.198956]  [<ffffffff818338b5>] schedule_timeout+0x1b5/0x270
[39720.198963]  [<ffffffff81037e19>] ? sched_clock+0x9/0x10
[39720.198971]  [<ffffffff8106425e>] ? kvm_clock_get_cycles+0x1e/0x20
[39720.198983]  [<ffffffff810f5b9c>] ? ktime_get+0x3c/0xb0
[39720.198985]  [<ffffffff81830f90>] ? bit_wait+0x60/0x60
[39720.198986]  [<ffffffff8182fcc4>] io_schedule_timeout+0xa4/0x110
[39720.198988]  [<ffffffff81830fab>] bit_wait_io+0x1b/0x70
[39720.198990]  [<ffffffff81830b3d>] __wait_on_bit+0x5d/0x90
[39720.199000]  [<ffffffff8118d6bb>] wait_on_page_bit+0xcb/0xf0
[39720.199003]  [<ffffffff810c3f10>] ? autoremove_wake_function+0x40/0x40
[39720.199016]  [<ffffffffc019155d>] prepare_pages+0x17d/0x190 [btrfs]
[39720.199030]  [<ffffffffc0192120>] __btrfs_buffered_write+0x200/0x5f0 [btrfs]
[39720.199044]  [<ffffffffc01959f1>] btrfs_file_write_iter+0x171/0x560 [btrfs]
[39720.199051]  [<ffffffff811ec1a7>] ? kmem_cache_alloc+0x187/0x1f0
[39720.199055]  [<ffffffff8121d306>] ? getname_flags+0x56/0x1f0
[39720.199058]  [<ffffffff8120d27b>] new_sync_write+0x9b/0xe0
[39720.199060]  [<ffffffff8120d2e6>] __vfs_write+0x26/0x40
[39720.199065]  [<ffffffff8120dc69>] vfs_write+0xa9/0x1a0
[39720.199067]  [<ffffffff8120e925>] SyS_write+0x55/0xc0
[39720.199069]  [<ffffffff81834872>] entry_SYSCALL_64_fastpath+0x16/0x71
[39720.199075] INFO: task kworker/u4:0:6969 blocked for more than 120 seconds.
[39720.199076]       Not tainted 4.4.0-46-generic #67-Ubuntu
[39720.199077] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[39720.199078] kworker/u4:0    D ffff880028903c48     0  6969      2 0x00000000
[39720.199106] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[39720.199108]  ffff880028903c48 00000001801a001a ffff8801b7708000 ffff8801b7c98000
[39720.199110]  ffff880028904000 ffff8800a7ed59f0 ffff8800a7ed5800 ffff8800a7ed59f0
[39720.199112]  0000000000000001 ffff880028903c60 ffffffff81830795 ffff8801b797ef30
[39720.199114] Call Trace:
[39720.199116]  [<ffffffff81830795>] schedule+0x35/0x80
[39720.199129]  [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[39720.199131]  [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60
[39720.199144]  [<ffffffffc017f8a5>] start_transaction+0x275/0x4b0 [btrfs]
[39720.199158]  [<ffffffffc017fb37>] btrfs_join_transaction+0x17/0x20 [btrfs]
[39720.199172]  [<ffffffffc01882a5>] btrfs_finish_ordered_io+0x435/0x650 [btrfs]
[39720.199196]  [<ffffffff8140a755>] ? find_next_bit+0x15/0x20
[39720.199211]  [<ffffffffc0188785>] finish_ordered_fn+0x15/0x20 [btrfs]
[39720.199227]  [<ffffffffc01b0e9a>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs]
[39720.199241]  [<ffffffffc01b114e>] btrfs_endio_write_helper+0xe/0x10 [btrfs]
[39720.199245]  [<ffffffff8109a4a5>] process_one_work+0x165/0x480
[39720.199246]  [<ffffffff8109a80b>] worker_thread+0x4b/0x4c0
[39720.199248]  [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480
[39720.199250]  [<ffffffff810a09e8>] kthread+0xd8/0xf0
[39720.199251]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
[39720.199268]  [<ffffffff81834c0f>] ret_from_fork+0x3f/0x70
[39720.199271]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
[39720.199274] INFO: task smbd:7030 blocked for more than 120 seconds.
[39720.199276]       Not tainted 4.4.0-46-generic #67-Ubuntu
[39720.199277] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[39720.199278] smbd            D ffff880022ebbd28     0  7030   1346 0x00000000
[39720.199280]  ffff880022ebbd28 0001880000000001 ffff8801539c0000 ffff8801b551d780
[39720.199286]  ffff880022ebc000 ffff8800b868f1f0 ffff8800b868f000 ffff8800b868f1f0
[39720.199288]  0000000000000001 ffff880022ebbd40 ffffffff81830795 ffff8801b797ef30
[39720.199290] Call Trace:
[39720.199292]  [<ffffffff81830795>] schedule+0x35/0x80
[39720.199305]  [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[39720.199307]  [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60
[39720.199319]  [<ffffffffc017f8f5>] start_transaction+0x2c5/0x4b0 [btrfs]
[39720.199332]  [<ffffffffc017faf8>] btrfs_start_transaction+0x18/0x20 [btrfs]
[39720.199345]  [<ffffffffc018af32>] btrfs_setattr+0x182/0x360 [btrfs]
[39720.199349]  [<ffffffff8122aca5>] notify_change+0x235/0x360
[39720.199351]  [<ffffffff8120a8c5>] do_truncate+0x75/0xc0
[39720.199353]  [<ffffffff8120b879>] do_sys_ftruncate.constprop.14+0x119/0x170
[39720.199354]  [<ffffffff8120ba7e>] SyS_ftruncate+0xe/0x10
[39720.199356]  [<ffffffff81834872>] entry_SYSCALL_64_fastpath+0x16/0x71
[39720.199359] INFO: task kworker/u4:4:7033 blocked for more than 120 seconds.
[39720.199360]       Not tainted 4.4.0-46-generic #67-Ubuntu
[39720.199361] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[39720.199362] kworker/u4:4    D ffff88001ab07c48     0  7033      2 0x00000000
[39720.199378] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[39720.199379]  ffff88001ab07c48 0000000000000040 ffff8801b7c98000 ffff8801b5519900
[39720.199381]  ffff88001ab08000 ffff8800a7ed59f0 ffff8800a7ed5800 ffff8800a7ed59f0
[39720.199383]  0000000000000001 ffff88001ab07c60 ffffffff81830795 ffff8801b797ef30
[39720.199385] Call Trace:
[39720.199387]  [<ffffffff81830795>] schedule+0x35/0x80
[39720.199399]  [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[39720.199401]  [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60
[39720.199414]  [<ffffffffc017f8a5>] start_transaction+0x275/0x4b0 [btrfs]
[39720.199448]  [<ffffffffc017fb37>] btrfs_join_transaction+0x17/0x20 [btrfs]
[39720.199462]  [<ffffffffc01882a5>] btrfs_finish_ordered_io+0x435/0x650 [btrfs]
[39720.199475]  [<ffffffffc0188785>] finish_ordered_fn+0x15/0x20 [btrfs]
[39720.199489]  [<ffffffffc01b0e9a>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs]
[39720.199503]  [<ffffffffc01b114e>] btrfs_endio_write_helper+0xe/0x10 [btrfs]
[39720.199505]  [<ffffffff8109a4a5>] process_one_work+0x165/0x480
[39720.199507]  [<ffffffff8109a80b>] worker_thread+0x4b/0x4c0
[39720.199509]  [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480
[39720.199511]  [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480
[39720.199512]  [<ffffffff810a09e8>] kthread+0xd8/0xf0
[39720.199514]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
[39720.199516]  [<ffffffff81834c0f>] ret_from_fork+0x3f/0x70
[39720.199517]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
[39720.199520] INFO: task kworker/u4:2:7390 blocked for more than 120 seconds.
[39720.199522]       Not tainted 4.4.0-46-generic #67-Ubuntu
[39720.199523] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[39720.199524] kworker/u4:2    D ffff880111e4bc48     0  7390      2 0x00000000
[39720.199539] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[39720.199541]  ffff880111e4bc48 0000000000000040 ffff8801b8228000 ffff8801b7708000
[39720.199543]  ffff880111e4c000 ffff8800a7ed59f0 ffff8800a7ed5800 ffff8800a7ed59f0
[39720.199545]  0000000000000001 ffff880111e4bc60 ffffffff81830795 ffff8801b797ef30
[39720.199547] Call Trace:
[39720.199562]  [<ffffffff81830795>] schedule+0x35/0x80
[39720.199575]  [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[39720.199577]  [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60
[39720.199590]  [<ffffffffc017f8a5>] start_transaction+0x275/0x4b0 [btrfs]
[39720.199603]  [<ffffffffc017fb37>] btrfs_join_transaction+0x17/0x20 [btrfs]
[39720.199616]  [<ffffffffc01882a5>] btrfs_finish_ordered_io+0x435/0x650 [btrfs]
[39720.199619]  [<ffffffff811af88f>] ? wb_wakeup_delayed+0x5f/0x70
[39720.199632]  [<ffffffffc0188785>] finish_ordered_fn+0x15/0x20 [btrfs]
[39720.199646]  [<ffffffffc01b0e9a>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs]
[39720.199660]  [<ffffffffc01b114e>] btrfs_endio_write_helper+0xe/0x10 [btrfs]
[39720.199662]  [<ffffffff8109a4a5>] process_one_work+0x165/0x480
[39720.199664]  [<ffffffff8109a80b>] worker_thread+0x4b/0x4c0
[39720.199665]  [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480
[39720.199667]  [<ffffffff810a09e8>] kthread+0xd8/0xf0
[39720.199669]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
[39720.199670]  [<ffffffff81834c0f>] ret_from_fork+0x3f/0x70
[39720.199672]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
[39720.199674] INFO: task kworker/u4:6:7391 blocked for more than 120 seconds.
[39720.199676]       Not tainted 4.4.0-46-generic #67-Ubuntu
[39720.199677] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[39720.199678] kworker/u4:6    D ffff8801111e3c48     0  7391      2 0x00000000
[39720.199694] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[39720.199695]  ffff8801111e3c48 0000000000000040 ffff8801539c0c80 ffff8801b770f080
[39720.199697]  ffff8801111e4000 ffff8800a7ed59f0 ffff8800a7ed5800 ffff8800a7ed59f0
[39720.199699]  0000000000000001 ffff8801111e3c60 ffffffff81830795 ffff8801b797ef30
[39720.199701] Call Trace:
[39720.199703]  [<ffffffff81830795>] schedule+0x35/0x80
[39720.199715]  [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[39720.199717]  [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60
[39720.199730]  [<ffffffffc017f8a5>] start_transaction+0x275/0x4b0 [btrfs]
[39720.199742]  [<ffffffffc017fb37>] btrfs_join_transaction+0x17/0x20 [btrfs]
[39720.199756]  [<ffffffffc01882a5>] btrfs_finish_ordered_io+0x435/0x650 [btrfs]
[39720.199758]  [<ffffffff8140a755>] ? find_next_bit+0x15/0x20
[39720.199771]  [<ffffffffc0188785>] finish_ordered_fn+0x15/0x20 [btrfs]
[39720.199785]  [<ffffffffc01b0e9a>] btrfs_scrubparity_helper+0xca/0x2f0 [btrfs]
[39720.199799]  [<ffffffffc01b114e>] btrfs_endio_write_helper+0xe/0x10 [btrfs]
[39720.199801]  [<ffffffff8109a4a5>] process_one_work+0x165/0x480
[39720.199802]  [<ffffffff8109a80b>] worker_thread+0x4b/0x4c0
[39720.199804]  [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480
[39720.199806]  [<ffffffff8109a7c0>] ? process_one_work+0x480/0x480
[39720.199807]  [<ffffffff810a09e8>] kthread+0xd8/0xf0
[39720.199809]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
[39720.199811]  [<ffffffff81834c0f>] ret_from_fork+0x3f/0x70
[39720.199812]  [<ffffffff810a0910>] ? kthread_create_on_node+0x1e0/0x1e0
[39720.199818] INFO: task smbd:7542 blocked for more than 120 seconds.
[39720.199819]       Not tainted 4.4.0-46-generic #67-Ubuntu
[39720.199820] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[39720.199821] smbd            D ffff88000a82fc80     0  7542   1346 0x00000000
[39720.199824]  ffff88000a82fc80 0001880000000001 ffffffff81e11500 ffff8801539c2580
[39720.199826]  ffff88000a830000 ffff8800a7ed59f0 ffff8800a7ed5800 ffff8800a7ed59f0
[39720.199828]  0000000000000001 ffff88000a82fc98 ffffffff81830795 ffff8801b797ef30
[39720.199830] Call Trace:
[39720.199831]  [<ffffffff81830795>] schedule+0x35/0x80
[39720.199844]  [<ffffffffc017dfd3>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[39720.199846]  [<ffffffff810c3ed0>] ? wake_atomic_t_function+0x60/0x60
[39720.199858]  [<ffffffffc017f8f5>] start_transaction+0x2c5/0x4b0 [btrfs]
[39720.199884]  [<ffffffffc017faf8>] btrfs_start_transaction+0x18/0x20 [btrfs]
[39720.199898]  [<ffffffffc018de0d>] btrfs_mknod+0x4d/0x200 [btrfs]
[39720.199901]  [<ffffffff8121a27d>] vfs_mknod+0xdd/0x150
[39720.199910]  [<ffffffff817d0361>] unix_bind+0x321/0x3b0
[39720.199927]  [<ffffffff8170ce82>] SYSC_bind+0xd2/0x110
[39720.199930]  [<ffffffff81220731>] ? SyS_fcntl+0x4b1/0x5e0
[39720.199932]  [<ffffffff8170dace>] SyS_bind+0xe/0x10
[39720.199934]  [<ffffffff81834872>] entry_SYSCALL_64_fastpath+0x16/0x71
[39720.199936] INFO: task smbd:7543 blocked for more than 120 seconds.
[39720.199937]       Not tainted 4.4.0-46-generic #67-Ubuntu
[39720.199938] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[39720.199939] smbd            D ffff88000970be18     0  7543   1346 0x00000000
[39720.199942]  ffff88000970be18 0000000200000010 ffffffff81e11500 ffff8801539c5780
[39720.199944]  ffff88000970c000 ffff8800ba7eb524 ffff8801539c5780 00000000ffffffff
[39720.199946]  ffff8800ba7eb528 ffff88000970be30 ffffffff81830795 ffff8800ba7eb520
[39720.199948] Call Trace:
[39720.199949]  [<ffffffff81830795>] schedule+0x35/0x80
[39720.199951]  [<ffffffff81830a3e>] schedule_preempt_disabled+0xe/0x10
[39720.199952]  [<ffffffff81832679>] __mutex_lock_slowpath+0xb9/0x130
[39720.199954]  [<ffffffff8183270f>] mutex_lock+0x1f/0x30
[39720.199956]  [<ffffffff8121df4b>] do_unlinkat+0x12b/0x2d0
[39720.199958]  [<ffffffff8121eb56>] SyS_unlink+0x16/0x20
[39720.199960]  [<ffffffff81834872>] entry_SYSCALL_64_fastpath+0x16/0x71

Revision history for this message

S. W. (cebit2006) wrote on 2016-10-27:

this bug exsits since ubuntu moved to Samba 4.3. with 4.2 everything worked gerat

currently used: Version 4.3.11-Ubuntu

Changed in linux (Ubuntu):
status:	Expired → New

Revision history for this message

Brad Figg (brad-figg) wrote on 2016-10-27:

This change was made by a bot.

Changed in linux (Ubuntu):
status:	New → Confirmed

Revision history for this message

S. W. (cebit2006) wrote on 2016-11-18:

#10

still valid in yakkety and 4.8.0-27

[ 726.382817] INFO: task kworker/u4:7:1659 blocked for more than 120 seconds.
[ 726.382819] Not tainted 4.8.0-27-generic #29-Ubuntu
[ 726.382820] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 726.382820] kworker/u4:7 D ffff98c792b57c48 0 1659 2 0x00000000
[ 726.382836] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[ 726.382838] ffff98c792b57c48 0000000000000000 ffff98c7b8231a00 ffff98c7b3cf5b00
[ 726.382839] 0000100800000008 ffff98c792b58000 ffff98c7ae1649f0 ffff98c7ae164800
[ 726.382841] ffff98c7ae1649f0 0000000000000001 ffff98c792b57c60 ffffffff8b89a855
[ 726.382843] Call Trace:
[ 726.382845] [<ffffffff8b89a855>] schedule+0x35/0x80
[ 726.382858] [<ffffffffc057fb23>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[ 726.382859] [<ffffffff8b0c73a0>] ? wake_atomic_t_function+0x60/0x60
[ 726.382872] [<ffffffffc0582282>] start_transaction+0x272/0x4a0 [btrfs]
[ 726.382885] [<ffffffffc0582507>] btrfs_join_transaction+0x17/0x20 [btrfs]
[ 726.382899] [<ffffffffc058bd79>] btrfs_finish_ordered_io+0x499/0x6c0 [btrfs]
[ 726.382912] [<ffffffffc058c2a5>] finish_ordered_fn+0x15/0x20 [btrfs]
[ 726.382926] [<ffffffffc05b6858>] btrfs_scrubparity_helper+0xc8/0x2d0 [btrfs]
[ 726.382941] [<ffffffffc05b6aee>] btrfs_endio_write_helper+0xe/0x10 [btrfs]
[ 726.382942] [<ffffffff8b09d61c>] process_one_work+0x1fc/0x4b0
[ 726.382944] [<ffffffff8b09d91b>] worker_thread+0x4b/0x500
[ 726.382945] [<ffffffff8b09d8d0>] ? process_one_work+0x4b0/0x4b0
[ 726.382946] [<ffffffff8b09d8d0>] ? process_one_work+0x4b0/0x4b0
[ 726.382948] [<ffffffff8b0a3c18>] kthread+0xd8/0xf0
[ 726.382949] [<ffffffff8b89f29f>] ret_from_fork+0x1f/0x40
[ 726.382951] [<ffffffff8b0a3b40>] ? kthread_create_on_node+0x1e0/0x1e0

Revision history for this message

S. W. (cebit2006) wrote on 2016-12-01:

#11

Download full text (14.3 KiB)

[43142.047947] INFO: task btrfs-cleaner:238 blocked for more than 120 seconds.
[43142.047962]       Not tainted 4.8.0-28-generic #30-Ubuntu
[43142.047963] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43142.047965] btrfs-cleaner   D ffff945e6e52bd00     0   238      2 0x00000000
[43142.047989]  ffff945e6e52bd00 00ff945e6e52bcd8 ffffffffad80d540 ffff945e6fc70000
[43142.047991]  0000000000000046 ffff945e6e52c000 ffff945e6ff7b9f0 ffff945e6ff7b800
[43142.047993]  ffff945e6ff7b9f0 0000000000000001 ffff945e6e52bd18 ffffffffad295845
[43142.047995] Call Trace:
[43142.048026]  [<ffffffffad295845>] schedule+0x35/0x80
[43142.048157]  [<ffffffffc0431b63>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[43142.048174]  [<ffffffffacac7150>] ? wake_atomic_t_function+0x60/0x60
[43142.048187]  [<ffffffffc0434311>] start_transaction+0x2c1/0x4a0 [btrfs]
[43142.048200]  [<ffffffffc0434508>] btrfs_start_transaction+0x18/0x20 [btrfs]
[43142.048211]  [<ffffffffc041ad4f>] btrfs_drop_snapshot+0x7f/0x850 [btrfs]
[43142.048213]  [<ffffffffad2953a8>] ? __schedule+0x308/0x770
[43142.048226]  [<ffffffffc0433534>] btrfs_clean_one_deleted_snapshot+0xb4/0x100 [btrfs]
[43142.048240]  [<ffffffffc0429fbd>] cleaner_kthread+0x15d/0x1c0 [btrfs]
[43142.048259]  [<ffffffffc0429e60>] ? btrfs_destroy_pinned_extent+0x130/0x130 [btrfs]
[43142.048262]  [<ffffffffacaa3e58>] kthread+0xd8/0xf0
[43142.048268]  [<ffffffffad29a25f>] ret_from_fork+0x1f/0x40
[43142.048270]  [<ffffffffacaa3d80>] ? kthread_create_on_node+0x1e0/0x1e0
[43142.048295] INFO: task smbd:9182 blocked for more than 120 seconds.
[43142.048297]       Not tainted 4.8.0-28-generic #30-Ubuntu
[43142.048298] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43142.048299] smbd            D ffff945e06f4fd18     0  9182   1302 0x00000000
[43142.048301]  ffff945e06f4fd18 00ff945e77494000 ffff945deac0a700 ffff945e72400d00
[43142.048303]  ffff945e6e534f88 ffff945e06f50000 ffff945e777bb1f0 ffff945e777bb000
[43142.048305]  ffff945e777bb1f0 0000000000000001 ffff945e06f4fd30 ffffffffad295845
[43142.048307] Call Trace:
[43142.048308]  [<ffffffffad295845>] schedule+0x35/0x80
[43142.048322]  [<ffffffffc0431b63>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[43142.048323]  [<ffffffffacac7150>] ? wake_atomic_t_function+0x60/0x60
[43142.048336]  [<ffffffffc0434311>] start_transaction+0x2c1/0x4a0 [btrfs]
[43142.048349]  [<ffffffffc0434508>] btrfs_start_transaction+0x18/0x20 [btrfs]
[43142.048362]  [<ffffffffc04406b7>] btrfs_setattr+0x1e7/0x360 [btrfs]
[43142.048371]  [<ffffffffacc5204c>] notify_change+0x30c/0x480
[43142.048377]  [<ffffffffacc2f433>] do_truncate+0x73/0xc0
[43142.048379]  [<ffffffffacc302b9>] do_sys_ftruncate.constprop.13+0x119/0x180
[43142.048380]  [<ffffffffacc304be>] SyS_ftruncate+0xe/0x10
[43142.048382]  [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[43142.048386] INFO: task smbd:9795 blocked for more than 120 seconds.
[43142.048388]       Not tainted 4.8.0-28-generic #30-Ubuntu
[43142.048389] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43142.048390] smbd            D ffff945d630dbc78     0  9795   1302 0x00000000
[43142.048392]  ffff945d630dbc78 00ff945e77494000 ffff945e6fc76800 ffff945deac0a700
[43142.048394]  ffff945e6e5ae2c8 ffff945d630dc000 ffff945e705549f0 ffff945e70554800
[43142.048396]  ffff945e705549f0 0000000000000001 ffff945d630dbc90 ffffffffad295845
[43142.048398] Call Trace:
[43142.048399]  [<ffffffffad295845>] schedule+0x35/0x80
[43142.048412]  [<ffffffffc0431b63>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[43142.048413]  [<ffffffffacac7150>] ? wake_atomic_t_function+0x60/0x60
[43142.048426]  [<ffffffffc0434311>] start_transaction+0x2c1/0x4a0 [btrfs]
[43142.048439]  [<ffffffffc0434508>] btrfs_start_transaction+0x18/0x20 [btrfs]
[43142.048455]  [<ffffffffc04445ed>] btrfs_mknod+0x4d/0x200 [btrfs]
[43142.048459]  [<ffffffffacc4002b>] vfs_mknod+0x14b/0x1e0
[43142.048465]  [<ffffffffad228a7a>] unix_bind+0x31a/0x3a0
[43142.048479]  [<ffffffffad15fe42>] SYSC_bind+0xd2/0x110
[43142.048481]  [<ffffffffacc46c96>] ? SyS_fcntl+0x3e6/0x4e0
[43142.048489]  [<ffffffffad160ace>] SyS_bind+0xe/0x10
[43142.048491]  [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[43142.048493] INFO: task smbd:9796 blocked for more than 120 seconds.
[43142.048508]       Not tainted 4.8.0-28-generic #30-Ubuntu
[43142.048510] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43142.048511] smbd            D ffff945d6275fd88     0  9796   1302 0x00000000
[43142.048513]  ffff945d6275fd88 0000000000000000 ffff945e78230d00 ffff945deac0c100
[43142.048515]  ffff945d6275fd80 ffff945d62760000 ffff945e6e2939d8 ffff945e6e2939f0
[43142.048517]  ffff945e6e2939e0 ffff945e6e2939d8 ffff945d6275fda0 ffffffffad295845
[43142.048519] Call Trace:
[43142.048521]  [<ffffffffad295845>] schedule+0x35/0x80
[43142.048522]  [<ffffffffad2986ee>] rwsem_down_write_failed+0x20e/0x3c0
[43142.048529]  [<fffffffface3eb57>] call_rwsem_down_write_failed+0x17/0x30
[43142.048531]  [<ffffffffad297d2d>] down_write+0x2d/0x40
[43142.048532]  [<ffffffffacc4413a>] do_unlinkat+0x1aa/0x310
[43142.048533]  [<ffffffffacc358b1>] ? __sb_end_write+0x21/0x30
[43142.048534]  [<ffffffffacc44e16>] SyS_unlink+0x16/0x20
[43142.048536]  [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[43262.872945] INFO: task btrfs-cleaner:238 blocked for more than 120 seconds.
[43262.872951]       Not tainted 4.8.0-28-generic #30-Ubuntu
[43262.872953] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43262.872954] btrfs-cleaner   D ffff945e6e52bd00     0   238      2 0x00000000
[43262.872961]  ffff945e6e52bd00 00ff945e6e52bcd8 ffffffffad80d540 ffff945e6fc70000
[43262.872964]  0000000000000046 ffff945e6e52c000 ffff945e6ff7b9f0 ffff945e6ff7b800
[43262.872966]  ffff945e6ff7b9f0 0000000000000001 ffff945e6e52bd18 ffffffffad295845
[43262.872968] Call Trace:
[43262.872977]  [<ffffffffad295845>] schedule+0x35/0x80
[43262.873018]  [<ffffffffc0431b63>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[43262.873022]  [<ffffffffacac7150>] ? wake_atomic_t_function+0x60/0x60
[43262.873035]  [<ffffffffc0434311>] start_transaction+0x2c1/0x4a0 [btrfs]
[43262.873048]  [<ffffffffc0434508>] btrfs_start_transaction+0x18/0x20 [btrfs]
[43262.873059]  [<ffffffffc041ad4f>] btrfs_drop_snapshot+0x7f/0x850 [btrfs]
[43262.873060]  [<ffffffffad2953a8>] ? __schedule+0x308/0x770
[43262.873073]  [<ffffffffc0433534>] btrfs_clean_one_deleted_snapshot+0xb4/0x100 [btrfs]
[43262.873085]  [<ffffffffc0429fbd>] cleaner_kthread+0x15d/0x1c0 [btrfs]
[43262.873097]  [<ffffffffc0429e60>] ? btrfs_destroy_pinned_extent+0x130/0x130 [btrfs]
[43262.873100]  [<ffffffffacaa3e58>] kthread+0xd8/0xf0
[43262.873102]  [<ffffffffad29a25f>] ret_from_fork+0x1f/0x40
[43262.873103]  [<ffffffffacaa3d80>] ? kthread_create_on_node+0x1e0/0x1e0
[43262.873115] INFO: task nmbd:1181 blocked for more than 120 seconds.
[43262.873116]       Not tainted 4.8.0-28-generic #30-Ubuntu
[43262.873117] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43262.873118] nmbd            D ffff945e763efbc8     0  1181      1 0x00000000
[43262.873121]  ffff945e763efbc8 0000000000170fff ffff945e78230d00 ffff945e705a8000
[43262.873123]  ffff945e763efc58 ffff945e763f0000 ffff945dec94a69c ffff945dec94a680
[43262.873125]  ffff945e07a4ef60 0000000000170000 ffff945e763efbe0 ffffffffad295845
[43262.873126] Call Trace:
[43262.873128]  [<ffffffffad295845>] schedule+0x35/0x80
[43262.873142]  [<ffffffffc0454dd0>] lock_extent_bits+0x190/0x1e0 [btrfs]
[43262.873144]  [<ffffffffacac7150>] ? wake_atomic_t_function+0x60/0x60
[43262.873157]  [<ffffffffc044793b>] lock_and_cleanup_extent_if_need+0xfb/0x280 [btrfs]
[43262.873171]  [<ffffffffc0448d02>] __btrfs_buffered_write+0x1d2/0x710 [btrfs]
[43262.873173]  [<ffffffffacc433c4>] ? putname+0x54/0x60
[43262.873187]  [<ffffffffc044c890>] btrfs_file_write_iter+0x170/0x4d0 [btrfs]
[43262.873190]  [<ffffffffacc32655>] new_sync_write+0xd5/0x130
[43262.873191]  [<ffffffffacc326d6>] __vfs_write+0x26/0x40
[43262.873193]  [<ffffffffacc32e05>] vfs_write+0xb5/0x1a0
[43262.873194]  [<ffffffffacc34255>] SyS_write+0x55/0xc0
[43262.873196]  [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[43262.873248] INFO: task lightdm-gtk-gre:1356 blocked for more than 120 seconds.
[43262.873250]       Not tainted 4.8.0-28-generic #30-Ubuntu
[43262.873251] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43262.873252] lightdm-gtk-gre D ffff945e72957a88     0  1356   1350 0x00000000
[43262.873254]  ffff945e72957a88 00ff945e723a7600 ffff945e78230d00 ffff945e771c0000
[43262.873256]  ffff945e72957a78 ffff945e72958000 ffff945e7fd19200 7fffffffffffffff
[43262.873258]  ffffffffad296030 ffff945e72957be8 ffff945e72957aa0 ffffffffad295845
[43262.873260] Call Trace:
[43262.873262]  [<ffffffffad296030>] ? bit_wait+0x60/0x60
[43262.873263]  [<ffffffffad295845>] schedule+0x35/0x80
[43262.873264]  [<ffffffffad299098>] schedule_timeout+0x2c8/0x440
[43262.873266]  [<ffffffffacab7d13>] ? update_curr+0xf3/0x170
[43262.873267]  [<ffffffffacab6e35>] ? pick_next_entity+0x85/0x130
[43262.873280]  [<ffffffffaca63e6e>] ? kvm_clock_get_cycles+0x1e/0x20
[43262.873287]  [<ffffffffacafc651>] ? ktime_get+0x41/0xb0
[43262.873289]  [<ffffffffad296030>] ? bit_wait+0x60/0x60
[43262.873290]  [<ffffffffad295034>] io_schedule_timeout+0xa4/0x110
[43262.873291]  [<ffffffffad29604b>] bit_wait_io+0x1b/0x70
[43262.873292]  [<ffffffffad295de0>] __wait_on_bit_lock+0x50/0xa0
[43262.873295]  [<ffffffffacb9fa7b>] __lock_page+0xcb/0xf0
[43262.873296]  [<ffffffffacac7190>] ? autoremove_wake_function+0x40/0x40
[43262.873297]  [<ffffffffacba109f>] pagecache_get_page+0x19f/0x2a0
[43262.873311]  [<ffffffffc04483c6>] prepare_pages+0x96/0x240 [btrfs]
[43262.873325]  [<ffffffffc0448d29>] __btrfs_buffered_write+0x1f9/0x710 [btrfs]
[43262.873329]  [<ffffffffad15f69d>] ? sock_recvmsg+0x3d/0x50
[43262.873343]  [<ffffffffc044c890>] btrfs_file_write_iter+0x170/0x4d0 [btrfs]
[43262.873344]  [<ffffffffacc32655>] new_sync_write+0xd5/0x130
[43262.873346]  [<ffffffffacc326d6>] __vfs_write+0x26/0x40
[43262.873347]  [<ffffffffacc32e05>] vfs_write+0xb5/0x1a0
[43262.873348]  [<ffffffffacc34255>] SyS_write+0x55/0xc0
[43262.873350]  [<ffffffffacc47f23>] ? SyS_ioctl+0x63/0x90
[43262.873351]  [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[43262.873356] INFO: task miniserv.pl:1401 blocked for more than 120 seconds.
[43262.873357]       Not tainted 4.8.0-28-generic #30-Ubuntu
[43262.873358] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43262.873359] miniserv.pl     D ffff945e70eebc10     0  1401      1 0x00000000
[43262.873362]  ffff945e70eebc10 0000000000000001 ffff945e78230d00 ffff945e72406800
[43262.873364]  00000000024200ca ffff945e70eec000 ffff945e705549f0 ffff945e70554800
[43262.873366]  ffff945e705549f0 0000000000000001 ffff945e70eebc28 ffffffffad295845
[43262.873367] Call Trace:
[43262.873369]  [<ffffffffad295845>] schedule+0x35/0x80
[43262.873381]  [<ffffffffc0431b63>] wait_current_trans.isra.21+0xd3/0x120 [btrfs]
[43262.873383]  [<ffffffffacac7150>] ? wake_atomic_t_function+0x60/0x60
[43262.873396]  [<ffffffffc04342c2>] start_transaction+0x272/0x4a0 [btrfs]
[43262.873408]  [<ffffffffc0434547>] btrfs_join_transaction+0x17/0x20 [btrfs]
[43262.873422]  [<ffffffffc043aa0c>] btrfs_dirty_inode+0x3c/0xd0 [btrfs]
[43262.873435]  [<ffffffffc043ab1f>] btrfs_update_time+0x7f/0xc0 [btrfs]
[43262.873436]  [<ffffffffacc519e8>] touch_atime+0xa8/0xd0
[43262.873438]  [<ffffffffacba3219>] generic_file_read_iter+0x6d9/0x870
[43262.873441]  [<ffffffffacbdb1f6>] ? handle_mm_fault+0x8a6/0x13c0
[43262.873443]  [<ffffffffacc324f2>] new_sync_read+0xd2/0x120
[43262.873444]  [<ffffffffacc32566>] __vfs_read+0x26/0x40
[43262.873446]  [<ffffffffacc32cb6>] vfs_read+0x96/0x130
[43262.873447]  [<ffffffffacc34195>] SyS_read+0x55/0xc0
[43262.873452]  [<ffffffffaca6b6f7>] ? trace_do_page_fault+0x37/0xd0
[43262.873454]  [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[43262.873456] INFO: task lpqd:1476 blocked for more than 120 seconds.
[43262.873457]       Not tainted 4.8.0-28-generic #30-Ubuntu
[43262.873458] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43262.873459] lpqd            D ffff945e71067c98     0  1476   1302 0x00000000
[43262.873475]  ffff945e71067c98 00ffffffacc3e9d7 ffffffffad80d540 ffff945e709f4100
[43262.873477]  00000002fefefeff ffff945e71068000 ffff945dec94a8d8 ffff945dec94a8f0
[43262.873479]  ffff945dec94a8e0 ffff945dec94a8d8 ffff945e71067cb0 ffffffffad295845
[43262.873481] Call Trace:
[43262.873483]  [<ffffffffad295845>] schedule+0x35/0x80
[43262.873484]  [<ffffffffad2986ee>] rwsem_down_write_failed+0x20e/0x3c0
[43262.873487]  [<fffffffface3eb57>] call_rwsem_down_write_failed+0x17/0x30
[43262.873488]  [<ffffffffad297d2d>] down_write+0x2d/0x40
[43262.873502]  [<ffffffffc044c782>] btrfs_file_write_iter+0x62/0x4d0 [btrfs]
[43262.873504]  [<ffffffffacc3804e>] ? inode_get_bytes+0x1e/0x50
[43262.873505]  [<ffffffffacc32655>] new_sync_write+0xd5/0x130
[43262.873507]  [<ffffffffacc326d6>] __vfs_write+0x26/0x40
[43262.873508]  [<ffffffffacc32e05>] vfs_write+0xb5/0x1a0
[43262.873509]  [<ffffffffacc34255>] SyS_write+0x55/0xc0
[43262.873511]  [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[43262.873515] INFO: task smbd:2293 blocked for more than 120 seconds.
[43262.873516]       Not tainted 4.8.0-28-generic #30-Ubuntu
[43262.873517] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43262.873518] smbd            D ffff945de78bfc98     0  2293   1302 0x00000000
[43262.873520]  ffff945de78bfc98 00ffffffacc3e9d7 ffff945e6fc76800 ffff945e72402700
[43262.873522]  00000002fefefeff ffff945de78c0000 ffff945dec94a8d8 ffff945dec94a8f0
[43262.873524]  ffff945dec94a8e0 ffff945dec94a8d8 ffff945de78bfcb0 ffffffffad295845
[43262.873526] Call Trace:
[43262.873527]  [<ffffffffad295845>] schedule+0x35/0x80
[43262.873528]  [<ffffffffad2986ee>] rwsem_down_write_failed+0x20e/0x3c0
[43262.873530]  [<fffffffface3eb57>] call_rwsem_down_write_failed+0x17/0x30
[43262.873531]  [<ffffffffad297d2d>] down_write+0x2d/0x40
[43262.873545]  [<ffffffffc044c782>] btrfs_file_write_iter+0x62/0x4d0 [btrfs]
[43262.873546]  [<ffffffffacc3804e>] ? inode_get_bytes+0x1e/0x50
[43262.873552]  [<ffffffffacc32655>] new_sync_write+0xd5/0x130
[43262.873553]  [<ffffffffacc326d6>] __vfs_write+0x26/0x40
[43262.873554]  [<ffffffffacc32e05>] vfs_write+0xb5/0x1a0
[43262.873556]  [<ffffffffacc34255>] SyS_write+0x55/0xc0
[43262.873557]  [<ffffffffad29a036>] entry_SYSCALL_64_fastpath+0x1e/0xa8

Revision history for this message

S. W. (cebit2006) wrote on 2016-12-01:

#12

[ 3988.561634] INFO: task pool:2945 blocked for more than 120 seconds.
[ 3988.561642] Not tainted 4.9.0-040900rc7-generic #201611271731
[ 3988.561643] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 3988.561646] pool D 0 2945 2409 0x00000000
[ 3988.561651] ffffa05cf068a000 ffffa05cb4ac4800 ffffa05ca6851a80 ffffa05cffc19340
[ 3988.561654] ffffa05ca6856a00 ffffc14cc3843ad8 ffffffffb4488453 0000000000000286
[ 3988.561657] 0000000000000038 ffffa05cffc19340 ffffa05cd7db6140 ffffa05ca6851a80
[ 3988.561660] Call Trace:
[ 3988.561670] [<ffffffffb4488453>] ? __schedule+0x233/0x6e0
[ 3988.561673] [<ffffffffb4489130>] ? bit_wait+0x60/0x60
[ 3988.561675] [<ffffffffb4488936>] schedule+0x36/0x80
[ 3988.561677] [<ffffffffb448c02a>] schedule_timeout+0x22a/0x3f0
[ 3988.561781] [<ffffffffc040d933>] ? ulist_add+0x13/0x20 [btrfs]
[ 3988.561785] [<ffffffffb3c63f1e>] ? kvm_clock_get_cycles+0x1e/0x20
[ 3988.561788] [<ffffffffb3cff0a1>] ? ktime_get+0x41/0xb0
[ 3988.561789] [<ffffffffb4489130>] ? bit_wait+0x60/0x60
[ 3988.561790] [<ffffffffb44881b4>] io_schedule_timeout+0xa4/0x110
[ 3988.561791] [<ffffffffb448914b>] bit_wait_io+0x1b/0x60
[ 3988.561793] [<ffffffffb4488cc8>] __wait_on_bit+0x58/0x90
[ 3988.561796] [<ffffffffb3da4cd2>] wait_on_page_bit+0x82/0xa0
[ 3988.561798] [<ffffffffb3cc8eb0>] ? autoremove_wake_function+0x40/0x40
[ 3988.561812] [<ffffffffc03b55af>] prepare_pages+0x19f/0x240 [btrfs]
[ 3988.561826] [<ffffffffc03b5dd9>] __btrfs_buffered_write+0x1f9/0x710 [btrfs]
[ 3988.561840] [<ffffffffc03b9bb0>] btrfs_file_write_iter+0x170/0x4d0 [btrfs]
[ 3988.561843] [<ffffffffb3e369e5>] __vfs_write+0xe5/0x160
[ 3988.561844] [<ffffffffb3e37065>] vfs_write+0xb5/0x1a0
[ 3988.561845] [<ffffffffb3e384c5>] SyS_write+0x55/0xc0
[ 3988.561847] [<ffffffffb448d67b>] entry_SYSCALL_64_fastpath+0x1e/0xad

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Ubuntulinux package

Lage samba file transfers block btrfs to hung task

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Ubuntu
linux package