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Bug#820832: marked as done (Tee command crash in kernel! INFO: task tee:9363 blocked for more than 120 seconds.)

Your message dated Tue, 12 Apr 2016 23:32:13 +0100
with message-id <1460500333.2705.9.camel@decadent.org.uk>
and subject line Re: Bug#820832: Tee command crash in kernel! INFO: task tee:9363 blocked for more than 120 seconds.
has caused the Debian Bug report #820832,
regarding Tee command crash in kernel! INFO: task tee:9363 blocked for more than 120 seconds.
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
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-- 
820832: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=820832
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: linux-source

Version: 3.16
Tee command crash is happening randomly in Linux kernel 3.16 taken from Debian. If the crash happens then the system is unusable until we trigger reboot.
Call trace:
Apr  7 10:29:06  kernel: [ 2762.372689] INFO: task tee:9363 blocked for more than 120 seconds.
Apr  7 10:29:06  kernel: [ 2762.374253]       Tainted: G           O  3.16.7-ckt11 #1
Apr  7 10:29:06  kernel: [ 2762.375811] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Apr  7 10:29:06  kernel: [ 2762.377389] tee             D ffff8800d2a3a828     0  9363      1 0x00000000
Apr  7 10:29:06  kernel: [ 2762.377396]  ffff88040b104aa0 0000000000000082 0000000000012ec0 ffff8800d2a3a3d0
Apr  7 10:29:06  kernel: [ 2762.377400]  0000000000012ec0 ffff8803dbdb3fd8 0000000000012ec0 ffff8800d2a3a3d0
Apr  7 10:29:06  kernel: [ 2762.377404]  ffff88040aef3800 ffff88040b317828 fffffffe00000002 ffff8800d2a3a3d0
Apr  7 10:29:06  kernel: [ 2762.377408] Call Trace:
Apr  7 10:29:06  kernel: [ 2762.377420]  [<ffffffff8158259a>] ? schedule_timeout+0x20a/0x270
Apr  7 10:29:06  kernel: [ 2762.377441]  [<ffffffff811c28ce>] ? pipe_read+0x23e/0x2f0
Apr  7 10:29:06  kernel: [ 2762.377450]  [<ffffffff81585f09>] ? ldsem_down_read+0x119/0x210
Apr  7 10:29:06  kernel: [ 2762.377457]  [<ffffffff813cc02c>] ? tty_ldisc_ref_wait+0x1c/0x40
Apr  7 10:29:06  kernel: [ 2762.377461]  [<ffffffff813c3ccc>] ? tty_write+0x7c/0x2b0
Apr  7 10:29:06  kernel: [ 2762.377467]  [<ffffffff81286d9f>] ? security_file_permission+0x2f/0xd0
Apr  7 10:29:06  kernel: [ 2762.377470]  [<ffffffff813c3f3a>] ? redirected_tty_write+0x3a/0xd0
Apr  7 10:29:06  kernel: [ 2762.377475]  [<ffffffff811ba6af>] ? vfs_write+0xbf/0x200
Apr  7 10:29:06  kernel: [ 2762.377479]  [<ffffffff811bac00>] ? SyS_write+0x50/0xb0
Apr  7 10:29:06  kernel: [ 2762.377484]  [<ffffffff81586b0d>] ? system_call_fastpath+0x1a/0x1f
Apr  7 10:29:06  kernel: [ 2762.377491] INFO: task java:9414 blocked for more than 120 seconds
Apr  7 10:29:06  kernel: [ 2762.380640] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Apr  7 10:29:06  kernel: [ 2762.382256] java            D ffff8803e7c70e38     0  9414      1 0x00000000
Apr  7 10:29:06  kernel: [ 2762.382260]  ffff88040b6a0a20 0000000000000082 ffffffff81099f6c ffff8803e7c709e0
Apr  7 10:29:06  kernel: [ 2762.382264]  0000000000012ec0 ffff8800d1a93fd8 0000000000012ec0 ffff8803e7c709e0
Apr  7 10:29:06  kernel: [ 2762.382268]  ffffffff8109a664 ffff88040b317828 ffffffff00000002 ffff8803e7c709e0
Apr  7 10:29:06  kernel: [ 2762.382271] Call Trace:
Apr  7 10:29:06  kernel: [ 2762.382277]  [<ffffffff81099f6c>] ? resched_task+0x2c/0xb0
Apr  7 10:29:06  kernel: [ 2762.382280]  [<ffffffff8109a664>] ? ttwu_do_wakeup+0x14/0xc0
Apr  7 10:29:06  kernel: [ 2762.382285]  [<ffffffff8158259a>] ? schedule_timeout+0x20a/0x270
Apr  7 10:29:06  kernel: [ 2762.382292]  [<ffffffff810daa90>] ? get_futex_key+0x1d0/0x2c0
Apr  7 10:29:06  kernel: [ 2762.382297]  [<ffffffff81585f09>] ? ldsem_down_read+0x119/0x210
Apr  7 10:29:06  kernel: [ 2762.382301]  [<ffffffff813cc02c>] ? tty_ldisc_ref_wait+0x1c/0x40
Apr  7 10:29:06  kernel: [ 2762.382305]  [<ffffffff813c592a>] ? tty_ioctl+0x2aa/0xb10
Apr  7 10:29:06  kernel: [ 2762.382311]  [<ffffffff810f55ca>] ? from_kgid_munged+0xa/0x20
Apr  7 10:29:06  kernel: [ 2762.382316]  [<ffffffff811bed80>] ? cp_new_stat+0x140/0x160
Apr  7 10:29:06  kernel: [ 2762.382322]  [<ffffffff811cca93>] ? do_vfs_ioctl+0x83/0x500
Apr  7 10:29:06  kernel: [ 2762.382327]  [<ffffffff811bf243>] ? SYSC_newfstat+0x23/0x30
Apr  7 10:29:06  kernel: [ 2762.382332]  [<ffffffff811ccfb1>] ? SyS_ioctl+0xa1/0xc0
Apr  7 10:29:06  kernel: [ 2762.382337]  [<ffffffff81586b0d>] ? system_call_fastpath+0x1a/0x1f
Apr  7 10:29:06  kernel: [ 2762.382339] INFO: task tee:9365 blocked for more than 120 seconds.
Apr  7 10:29:06  kernel: [ 2762.383973]       Tainted: G           O  3.16.7-ckt11 #1
Apr  7 10:29:06  kernel: [ 2762.385629] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Apr  7 10:29:06  kernel: [ 2762.387192] tee             D ffff8803f760a5e8     0  9365      1 0x00000000
Apr  7 10:29:06  kernel: [ 2762.387196]  ffff88040b6aa110 0000000000000086 0000000000012ec0 ffff8803f760a190
Apr  7 10:29:06  kernel: [ 2762.387199]  0000000000012ec0 ffff8803dbd43fd8 0000000000012ec0 ffff8803f760a190
Apr  7 10:29:06  kernel: [ 2762.387202]  ffff88040aef3800 ffff88040b317828 fffffffd00000002 ffff8803f760a190
Apr  7 10:29:06  kernel: [ 2762.387206] Call Trace:
Apr  7 10:29:06  kernel: [ 2762.387210]  [<ffffffff8158259a>] ? schedule_timeout+0x20a/0x270
Apr  7 10:29:06  kernel: [ 2762.387214]  [<ffffffff811c28ce>] ? pipe_read+0x23e/0x2f0
Apr  7 10:29:06  kernel: [ 2762.387218]  [<ffffffff81585f09>] ? ldsem_down_read+0x119/0x210
Apr  7 10:29:06  kernel: [ 2762.387222]  [<ffffffff813cc02c>] ? tty_ldisc_ref_wait+0x1c/0x40
Apr  7 10:29:06  kernel: [ 2762.387225]  [<ffffffff813c3ccc>] ? tty_write+0x7c/0x2b0
Apr  7 10:29:06  kernel: [ 2762.387229]  [<ffffffff81286d9f>] ? security_file_permission+0x2f/0xd0
Apr  7 10:29:06  kernel: [ 2762.387232]  [<ffffffff813c3f3a>] ? redirected_tty_write+0x3a/0xd0
Apr  7 10:29:06  kernel: [ 2762.387235]  [<ffffffff811ba6af>] ? vfs_write+0xbf/0x200
Apr  7 10:29:06  kernel: [ 2762.387239]  [<ffffffff811bac00>] ? SyS_write+0x50/0xb0
Apr  7 10:29:06  kernel: [ 2762.387243]  [<ffffffff81586b0d>] ? system_call_fastpath+0x1a/0x1f
Apr  7 10:29:06  kernel: [ 2762.387272] INFO: task login:9602 blocked for more than 120 seconds.
Apr  7 10:29:06  kernel: [ 2762.388828]       Tainted: G           O  3.16.7-ckt11 #1
Apr  7 10:29:06  kernel: [ 2762.390392] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Apr  7 10:29:06  kernel: [ 2762.391977] login           D ffff8803cc5daf38     0  9602      1 0x00000002
Apr  7 10:29:06  kernel: [ 2762.391981]  ffff88040b1053f0 0000000000000046 ffff8804205e9000 ffff8803cc5daae0
Apr  7 10:29:06  kernel: [ 2762.391984]  0000000000012ec0 ffff8803dbd47fd8 0000000000012ec0 ffff8803cc5daae0
Apr  7 10:29:06  kernel: [ 2762.391988]  ffff8804053827c0 ffff88040b317828 7fffffffffffffff ffff88040b317830
Apr  7 10:29:06  kernel: [ 2762.391991] Call Trace:
Apr  7 10:29:06  kernel: [ 2762.391996]  [<ffffffff8158259a>] ? schedule_timeout+0x20a/0x270
Apr  7 10:29:06  kernel: [ 2762.392001]  [<ffffffff8101d4b5>] ? sched_clock+0x5/0x10
Apr  7 10:29:06  kernel: [ 2762.392004]  [<ffffffff8109a625>] ? check_preempt_curr+0x75/0xa0
Apr  7 10:29:06  kernel: [ 2762.392008]  [<ffffffff8109a664>] ? ttwu_do_wakeup+0x14/0xc0
Apr  7 10:29:06  kernel: [ 2762.392012]  [<ffffffff8109d7db>] ? try_to_wake_up+0xcb/0x300
Apr  7 10:29:06  kernel: [ 2762.392016]  [<ffffffff815860f5>] ? ldsem_down_write+0xf5/0x1bc
Apr  7 10:29:06  kernel: [ 2762.392021]  [<ffffffff8158670c>] ? tty_ldisc_lock_pair_timeout+0x9c/0x120
Apr  7 10:29:06  kernel: [ 2762.392025]  [<ffffffff813cc95e>] ? tty_ldisc_hangup+0xbe/0x220
Apr  7 10:29:06  kernel: [ 2762.392029]  [<ffffffff813c3712>] ? __tty_hangup+0x2b2/0x440
Apr  7 10:29:06  kernel: [ 2762.392032]  [<ffffffff813c544f>] ? disassociate_ctty+0x7f/0x290
Apr  7 10:29:06  kernel: [ 2762.392038]  [<ffffffff8106e36f>] ? do_exit+0x7bf/0xa40
Apr  7 10:29:06  kernel: [ 2762.392043]  [<ffffffff8106e66d>] ? do_group_exit+0x3d/0xa0
Apr  7 10:29:06  kernel: [ 2762.392048]  [<ffffffff8106e6e7>] ? SyS_exit_group+0x17/0x20
Apr  7 10:29:06  kernel: [ 2762.392052]  [<ffffffff81586b0d>] ? system_call_fastpath+0x1a/0x1f


Regards,
Saravanan N

--- End Message ---
--- Begin Message --- 
On Tue, 2016-04-12 at 17:08 -0500, SaRaVanAn wrote:
> Package: linux-source
> 
> Version: 3.16
> 
> Tee command crash is happening randomly in Linux kernel 3.16 taken
> from Debian. If the crash happens then the system is unusable until we
> trigger reboot.
> 
> *Call trace:*
> 
> *A*pr  7 10:29:06  kernel: [ 2762.372689] INFO: task tee:9363 blocked
> for more than 120 seconds.
> Apr  7 10:29:06  kernel: [ 2762.374253]       Tainted: G           O
> 3.16.7-ckt11 #1
[...]

Please don't ask Debian for support with custom kernels (especially
when they're outdated and you've also loaded unspecified out-of-tree
modules).

Ben.

-- 
Ben Hutchings
This sentence contradicts itself - no actually it doesn't.

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