[Kernel-packages] [Bug 1672536] Re: task btrfs:841 blocked for more than 120 seconds.
[Expired for linux (Ubuntu) because there has been no activity for 60 days.] ** Changed in: linux (Ubuntu) Status: Incomplete => Expired -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1672536 Title: task btrfs:841 blocked for more than 120 seconds. Status in linux package in Ubuntu: Expired Bug description: After starting `btrfs scrub start /` `dmesg` contains ``` [Mär13 21:49] INFO: task btrfs:841 blocked for more than 120 seconds. [ +0,09] Tainted: PW OE 4.8.0-41-generic #44-Ubuntu [ +0,05] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0,07] btrfs D 9158a5cd3b08 0 841 26458 0x [ +0,05] 9158a5cd3b08 00ffadd9f58b 915bad6e1d80 915986fb2c40 [ +0,04] 9158a5cd3ae8 9158a5cd4000 915bac310714 915986fb2c40 [ +0,02] 915bac310718 9158a5cd3b20 ae49bd35 [ +0,03] Call Trace: [ +0,09] [] schedule+0x35/0x80 [ +0,03] [] schedule_preempt_disabled+0xe/0x10 [ +0,03] [] __mutex_lock_slowpath+0xb9/0x130 [ +0,02] [] mutex_lock+0x1f/0x30 [ +0,33] [] btrfs_relocate_block_group+0x1a3/0x2a0 [btrfs] [ +0,22] [] btrfs_relocate_chunk.isra.40+0x49/0xd0 [btrfs] [ +0,18] [] __btrfs_balance+0x634/0xc70 [btrfs] [ +0,17] [] btrfs_balance+0x2d0/0x5e0 [btrfs] [ +0,18] [] btrfs_ioctl_balance+0x379/0x390 [btrfs] [ +0,18] [] btrfs_ioctl+0xd1b/0x2010 [btrfs] [ +0,03] [] ? __schedule+0x308/0x770 [ +0,04] [] ? hrtimer_try_to_cancel+0x2c/0x120 [ +0,02] [] ? do_nanosleep+0x96/0xf0 [ +0,03] [] do_vfs_ioctl+0xa3/0x610 [ +0,03] [] ? __hrtimer_init+0xa0/0xa0 [ +0,02] [] ? do_nanosleep+0x5a/0xf0 [ +0,03] [] SyS_ioctl+0x79/0x90 [ +0,03] [] entry_SYSCALL_64_fastpath+0x1e/0xa8 [Mär13 21:51] INFO: task btrfs:841 blocked for more than 120 seconds. [ +0,10] Tainted: PW OE 4.8.0-41-generic #44-Ubuntu [ +0,04] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0,07] btrfs D 9158a5cd3b08 0 841 26458 0x [ +0,05] 9158a5cd3b08 00ffadd9f58b 915bad6e1d80 915986fb2c40 [ +0,03] 9158a5cd3ae8 9158a5cd4000 915bac310714 915986fb2c40 [ +0,03] 915bac310718 9158a5cd3b20 ae49bd35 [ +0,03] Call Trace: [ +0,09] [] schedule+0x35/0x80 [ +0,03] [] schedule_preempt_disabled+0xe/0x10 [ +0,02] [] __mutex_lock_slowpath+0xb9/0x130 [ +0,03] [] mutex_lock+0x1f/0x30 [ +0,34] [] btrfs_relocate_block_group+0x1a3/0x2a0 [btrfs] [ +0,22] [] btrfs_relocate_chunk.isra.40+0x49/0xd0 [btrfs] [ +0,18] [] __btrfs_balance+0x634/0xc70 [btrfs] [ +0,17] [] btrfs_balance+0x2d0/0x5e0 [btrfs] [ +0,18] [] btrfs_ioctl_balance+0x379/0x390 [btrfs] [ +0,18] [] btrfs_ioctl+0xd1b/0x2010 [btrfs] [ +0,03] [] ? __schedule+0x308/0x770 [ +0,04] [] ? hrtimer_try_to_cancel+0x2c/0x120 [ +0,03] [] ? do_nanosleep+0x96/0xf0 [ +0,02] [] do_vfs_ioctl+0xa3/0x610 [ +0,03] [] ? __hrtimer_init+0xa0/0xa0 [ +0,03] [] ? do_nanosleep+0x5a/0xf0 [ +0,02] [] SyS_ioctl+0x79/0x90 [ +0,03] [] entry_SYSCALL_64_fastpath+0x1e/0xa8 [Mär13 21:53] INFO: task btrfs:841 blocked for more than 120 seconds. [ +0,11] Tainted: PW OE 4.8.0-41-generic #44-Ubuntu [ +0,05] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0,32] btrfs D 9158a5cd3b08 0 841 26458 0x [ +0,05] 9158a5cd3b08 00ffadd9f58b 915bad6e1d80 915986fb2c40 [ +0,03] 9158a5cd3ae8 9158a5cd4000 915bac310714 915986fb2c40 [ +0,03] 915bac310718 9158a5cd3b20 ae49bd35 [ +0,03] Call Trace: [ +0,09] [] schedule+0x35/0x80 [ +0,03] [] schedule_preempt_disabled+0xe/0x10 [ +0,02] [] __mutex_lock_slowpath+0xb9/0x130 [ +0,03] [] mutex_lock+0x1f/0x30 [ +0,33] [] btrfs_relocate_block_group+0x1a3/0x2a0 [btrfs] [ +0,22] [] btrfs_relocate_chunk.isra.40+0x49/0xd0 [btrfs] [ +0,18] [] __btrfs_balance+0x634/0xc70 [btrfs] [ +0,17] [] btrfs_balance+0x2d0/0x5e0 [btrfs] [ +0,18] [] btrfs_ioctl_balance+0x379/0x390 [btrfs] [ +0,18] [] btrfs_ioctl+0xd1b/0x2010 [btrfs] [ +0,02] [] ? __schedule+0x308/0x770 [ +0,04] [] ? hrtimer_try_to_cancel+0x2c/0x120 [ +0,03] [] ? do_nanosleep+0x96/0xf0 [ +0,04] [] do_vfs_ioctl+0xa3/0x610 [ +0,02] [] ? __hrtimer_init+0xa0/0xa0 [ +0,03] [] ? do_nanosleep+0x5a/0xf0 [
[Kernel-packages] [Bug 1672536] Re: task btrfs:841 blocked for more than 120 seconds.
Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem? Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.11 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/v4.11-rc2 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1672536 Title: task btrfs:841 blocked for more than 120 seconds. Status in linux package in Ubuntu: Incomplete Bug description: After starting `btrfs scrub start /` `dmesg` contains ``` [Mär13 21:49] INFO: task btrfs:841 blocked for more than 120 seconds. [ +0,09] Tainted: PW OE 4.8.0-41-generic #44-Ubuntu [ +0,05] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0,07] btrfs D 9158a5cd3b08 0 841 26458 0x [ +0,05] 9158a5cd3b08 00ffadd9f58b 915bad6e1d80 915986fb2c40 [ +0,04] 9158a5cd3ae8 9158a5cd4000 915bac310714 915986fb2c40 [ +0,02] 915bac310718 9158a5cd3b20 ae49bd35 [ +0,03] Call Trace: [ +0,09] [] schedule+0x35/0x80 [ +0,03] [] schedule_preempt_disabled+0xe/0x10 [ +0,03] [] __mutex_lock_slowpath+0xb9/0x130 [ +0,02] [] mutex_lock+0x1f/0x30 [ +0,33] [] btrfs_relocate_block_group+0x1a3/0x2a0 [btrfs] [ +0,22] [] btrfs_relocate_chunk.isra.40+0x49/0xd0 [btrfs] [ +0,18] [] __btrfs_balance+0x634/0xc70 [btrfs] [ +0,17] [] btrfs_balance+0x2d0/0x5e0 [btrfs] [ +0,18] [] btrfs_ioctl_balance+0x379/0x390 [btrfs] [ +0,18] [] btrfs_ioctl+0xd1b/0x2010 [btrfs] [ +0,03] [] ? __schedule+0x308/0x770 [ +0,04] [] ? hrtimer_try_to_cancel+0x2c/0x120 [ +0,02] [] ? do_nanosleep+0x96/0xf0 [ +0,03] [] do_vfs_ioctl+0xa3/0x610 [ +0,03] [] ? __hrtimer_init+0xa0/0xa0 [ +0,02] [] ? do_nanosleep+0x5a/0xf0 [ +0,03] [] SyS_ioctl+0x79/0x90 [ +0,03] [] entry_SYSCALL_64_fastpath+0x1e/0xa8 [Mär13 21:51] INFO: task btrfs:841 blocked for more than 120 seconds. [ +0,10] Tainted: PW OE 4.8.0-41-generic #44-Ubuntu [ +0,04] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0,07] btrfs D 9158a5cd3b08 0 841 26458 0x [ +0,05] 9158a5cd3b08 00ffadd9f58b 915bad6e1d80 915986fb2c40 [ +0,03] 9158a5cd3ae8 9158a5cd4000 915bac310714 915986fb2c40 [ +0,03] 915bac310718 9158a5cd3b20 ae49bd35 [ +0,03] Call Trace: [ +0,09] [] schedule+0x35/0x80 [ +0,03] [] schedule_preempt_disabled+0xe/0x10 [ +0,02] [] __mutex_lock_slowpath+0xb9/0x130 [ +0,03] [] mutex_lock+0x1f/0x30 [ +0,34] [] btrfs_relocate_block_group+0x1a3/0x2a0 [btrfs] [ +0,22] [] btrfs_relocate_chunk.isra.40+0x49/0xd0 [btrfs] [ +0,18] [] __btrfs_balance+0x634/0xc70 [btrfs] [ +0,17] [] btrfs_balance+0x2d0/0x5e0 [btrfs] [ +0,18] [] btrfs_ioctl_balance+0x379/0x390 [btrfs] [ +0,18] [] btrfs_ioctl+0xd1b/0x2010 [btrfs] [ +0,03] [] ? __schedule+0x308/0x770 [ +0,04] [] ? hrtimer_try_to_cancel+0x2c/0x120 [ +0,03] [] ? do_nanosleep+0x96/0xf0 [ +0,02] [] do_vfs_ioctl+0xa3/0x610 [ +0,03] [] ? __hrtimer_init+0xa0/0xa0 [ +0,03] [] ? do_nanosleep+0x5a/0xf0 [ +0,02] [] SyS_ioctl+0x79/0x90 [ +0,03] [] entry_SYSCALL_64_fastpath+0x1e/0xa8 [Mär13 21:53] INFO: task btrfs:841 blocked for more than 120 seconds. [ +0,11] Tainted: PW OE 4.8.0-41-generic #44-Ubuntu [ +0,05] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0,32] btrfs D 9158a5cd3b08 0 841 26458 0x [ +0,05] 9158a5cd3b08 00ffadd9f58b 915bad6e1d80 915986fb2c40 [ +0,03] 9158a5cd3ae8 9158a5cd4000 915bac310714 915986fb2c40 [ +0,03] 915bac310718 9158a5cd3b20 ae49bd35 [ +0,03] Call Trace: [ +0,09] [] schedule+0x35/0x80 [ +0,03] [] schedule_preempt_disabled+0xe/0x10 [ +0,02] [] __mutex_lock_slowpath+0xb9/0x130 [ +0,03] []
[Kernel-packages] [Bug 1672536] Re: task btrfs:841 blocked for more than 120 seconds.
** Description changed: After starting `btrfs scrub start /` `dmesg` contains ``` [Mär13 21:49] INFO: task btrfs:841 blocked for more than 120 seconds. [ +0,09] Tainted: PW OE 4.8.0-41-generic #44-Ubuntu [ +0,05] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0,07] btrfs D 9158a5cd3b08 0 841 26458 0x [ +0,05] 9158a5cd3b08 00ffadd9f58b 915bad6e1d80 915986fb2c40 [ +0,04] 9158a5cd3ae8 9158a5cd4000 915bac310714 915986fb2c40 [ +0,02] 915bac310718 9158a5cd3b20 ae49bd35 [ +0,03] Call Trace: [ +0,09] [] schedule+0x35/0x80 [ +0,03] [] schedule_preempt_disabled+0xe/0x10 [ +0,03] [] __mutex_lock_slowpath+0xb9/0x130 [ +0,02] [] mutex_lock+0x1f/0x30 [ +0,33] [] btrfs_relocate_block_group+0x1a3/0x2a0 [btrfs] [ +0,22] [] btrfs_relocate_chunk.isra.40+0x49/0xd0 [btrfs] [ +0,18] [] __btrfs_balance+0x634/0xc70 [btrfs] [ +0,17] [] btrfs_balance+0x2d0/0x5e0 [btrfs] [ +0,18] [] btrfs_ioctl_balance+0x379/0x390 [btrfs] [ +0,18] [] btrfs_ioctl+0xd1b/0x2010 [btrfs] [ +0,03] [] ? __schedule+0x308/0x770 [ +0,04] [] ? hrtimer_try_to_cancel+0x2c/0x120 [ +0,02] [] ? do_nanosleep+0x96/0xf0 [ +0,03] [] do_vfs_ioctl+0xa3/0x610 [ +0,03] [] ? __hrtimer_init+0xa0/0xa0 [ +0,02] [] ? do_nanosleep+0x5a/0xf0 [ +0,03] [] SyS_ioctl+0x79/0x90 [ +0,03] [] entry_SYSCALL_64_fastpath+0x1e/0xa8 [Mär13 21:51] INFO: task btrfs:841 blocked for more than 120 seconds. [ +0,10] Tainted: PW OE 4.8.0-41-generic #44-Ubuntu [ +0,04] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0,07] btrfs D 9158a5cd3b08 0 841 26458 0x [ +0,05] 9158a5cd3b08 00ffadd9f58b 915bad6e1d80 915986fb2c40 [ +0,03] 9158a5cd3ae8 9158a5cd4000 915bac310714 915986fb2c40 [ +0,03] 915bac310718 9158a5cd3b20 ae49bd35 [ +0,03] Call Trace: [ +0,09] [] schedule+0x35/0x80 [ +0,03] [] schedule_preempt_disabled+0xe/0x10 [ +0,02] [] __mutex_lock_slowpath+0xb9/0x130 [ +0,03] [] mutex_lock+0x1f/0x30 [ +0,34] [] btrfs_relocate_block_group+0x1a3/0x2a0 [btrfs] [ +0,22] [] btrfs_relocate_chunk.isra.40+0x49/0xd0 [btrfs] [ +0,18] [] __btrfs_balance+0x634/0xc70 [btrfs] [ +0,17] [] btrfs_balance+0x2d0/0x5e0 [btrfs] [ +0,18] [] btrfs_ioctl_balance+0x379/0x390 [btrfs] [ +0,18] [] btrfs_ioctl+0xd1b/0x2010 [btrfs] [ +0,03] [] ? __schedule+0x308/0x770 [ +0,04] [] ? hrtimer_try_to_cancel+0x2c/0x120 [ +0,03] [] ? do_nanosleep+0x96/0xf0 [ +0,02] [] do_vfs_ioctl+0xa3/0x610 [ +0,03] [] ? __hrtimer_init+0xa0/0xa0 [ +0,03] [] ? do_nanosleep+0x5a/0xf0 [ +0,02] [] SyS_ioctl+0x79/0x90 [ +0,03] [] entry_SYSCALL_64_fastpath+0x1e/0xa8 [Mär13 21:53] INFO: task btrfs:841 blocked for more than 120 seconds. [ +0,11] Tainted: PW OE 4.8.0-41-generic #44-Ubuntu [ +0,05] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0,32] btrfs D 9158a5cd3b08 0 841 26458 0x [ +0,05] 9158a5cd3b08 00ffadd9f58b 915bad6e1d80 915986fb2c40 [ +0,03] 9158a5cd3ae8 9158a5cd4000 915bac310714 915986fb2c40 [ +0,03] 915bac310718 9158a5cd3b20 ae49bd35 [ +0,03] Call Trace: [ +0,09] [] schedule+0x35/0x80 [ +0,03] [] schedule_preempt_disabled+0xe/0x10 [ +0,02] [] __mutex_lock_slowpath+0xb9/0x130 [ +0,03] [] mutex_lock+0x1f/0x30 [ +0,33] [] btrfs_relocate_block_group+0x1a3/0x2a0 [btrfs] [ +0,22] [] btrfs_relocate_chunk.isra.40+0x49/0xd0 [btrfs] [ +0,18] [] __btrfs_balance+0x634/0xc70 [btrfs] [ +0,17] [] btrfs_balance+0x2d0/0x5e0 [btrfs] [ +0,18] [] btrfs_ioctl_balance+0x379/0x390 [btrfs] [ +0,18] [] btrfs_ioctl+0xd1b/0x2010 [btrfs] [ +0,02] [] ? __schedule+0x308/0x770 [ +0,04] [] ? hrtimer_try_to_cancel+0x2c/0x120 [ +0,03] [] ? do_nanosleep+0x96/0xf0 [ +0,04] [] do_vfs_ioctl+0xa3/0x610 [ +0,02] [] ? __hrtimer_init+0xa0/0xa0 [ +0,03] [] ? do_nanosleep+0x5a/0xf0 [ +0,02] [] SyS_ioctl+0x79/0x90 [ +0,03] [] entry_SYSCALL_64_fastpath+0x1e/0xa8 [Mär13 21:55] INFO: task btrfs:841 blocked for more than 120 seconds. [ +0,11] Tainted: PW OE 4.8.0-41-generic #44-Ubuntu [ +0,06] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0,09] btrfs D 9158a5cd3b08 0 841 26458
