Your message dated Sun, 23 May 2021 20:52:03 +0200
with message-id <E1lktCe-0006Ks-NI@hullmann.westfalen.local>
and subject line Closing this bug
has caused the Debian Bug report #855956,
regarding linux-image-4.9.0-0.bpo.1-amd64-unsigned: kworker 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
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact ow...@bugs.debian.org
immediately.)


-- 
855956: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=855956
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: linux-image-4.9.0-0.bpo.1-amd64-unsigned
Version: 4.9.2-2~bpo8+1
Severity: important

Dear Debian folks,

Apologies for the duplication, sending to the main submission list.

After upgrading 3 Debian Jessie servers to kernel 4.9.2 from
jessie-backports I encountered multiple
kernel traces on 3 separate servers at random times after boot. As a
result, one of the kworker processes
and several user space pids are stuck in 'D' state and encounter
issues accessing the XFS file system.

A proper shutdown will not complete and a reset is required when this
occurs. In one case this caused
file system corruption and prevented the server from booting normally
(dropped into a generic grub shell).

No specific workflow to trigger these events (so far).

The systems involved are:

System Information
    Manufacturer: Supermicro
    Product Name: X9DRT

System Information
        Manufacturer: Supermicro
        Product Name: X8DTT-H

The example traces are as follows:

[812709.892923] INFO: task kworker/u49:0:13127 blocked for more than
120 seconds.
[812709.892989]       Tainted: G            E   4.9.0-0.bpo.1-amd64 #1
[812709.893031] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[812709.893085] kworker/u49:0   D    0 13127      2 0x00000000
[812709.893100] Workqueue: writeback wb_workfn (flush-253:0)
[812709.893104]  ffff8f8d1a76d800 0000000000000000 ffff8f8d1bda3140
ffff8f8aa3e550c0
[812709.893108]  ffff8f8d1fb587c0 ffffb6820c9477a0 ffffffff81ff536d
00000001c053ad80
[812709.893112]  0000000000000000 0000000018af7798 ffffffff81abb2ee
ffff8f8aa3e550c0
[812709.893116] Call Trace:
[812709.893125]  [<ffffffff81ff536d>] ? __schedule+0x23d/0x6d0
[812709.893130]  [<ffffffff81abb2ee>] ? __wake_up_common+0x4e/0x90
[812709.893133]  [<ffffffff81ff60a0>] ? bit_wait_timeout+0x90/0x90
[812709.893135]  [<ffffffff81ff5832>] ? schedule+0x32/0x80
[812709.893138]  [<ffffffff81ff8d3c>] ? schedule_timeout+0x21c/0x3c0
[812709.893145]  [<ffffffff81cfe860>] ? blk_flush_plug_list+0xa0/0x220
[812709.893148]  [<ffffffff81cfe860>] ? blk_flush_plug_list+0xa0/0x220
[812709.893151]  [<ffffffff81ff60a0>] ? bit_wait_timeout+0x90/0x90
[812709.893153]  [<ffffffff81ff50b4>] ? io_schedule_timeout+0xb4/0x130
[812709.893156]  [<ffffffff81abb5a7>] ? prepare_to_wait_exclusive+0x57/0x80
[812709.893158]  [<ffffffff81ff60b7>] ? bit_wait_io+0x17/0x60
[812709.893161]  [<ffffffff81ff5c5f>] ? __wait_on_bit_lock+0x7f/0xb0
[812709.893163]  [<ffffffff81ff60a0>] ? bit_wait_timeout+0x90/0x90
[812709.893166]  [<ffffffff81ff5e6e>] ? out_of_line_wait_on_bit_lock+0x7e/0xa0
[812709.893169]  [<ffffffff81abb810>] ? autoremove_wake_function+0x40/0x40
[812709.893238]  [<ffffffffc054c6dd>] ? xfs_do_writepage+0x44d/0x700 [xfs]
[812709.893244]  [<ffffffff81bc3cee>] ? page_mkclean+0x6e/0xc0
[812709.893247]  [<ffffffff81bc2070>] ? __page_check_address+0x1b0/0x1b0
[812709.893252]  [<ffffffff81b8c997>] ? write_cache_pages+0x207/0x480
[812709.893299]  [<ffffffffc054c290>] ? xfs_aops_discard_page+0x130/0x130 [xfs]
[812709.893310]  [<ffffffffc0397fa6>] ? dm_make_request+0x76/0xc0 [dm_mod]
[812709.893356]  [<ffffffffc054caba>] ? xfs_vm_writepages+0xba/0xf0 [xfs]
[812709.893360]  [<ffffffff81c3232d>] ? __writeback_single_inode+0x3d/0x330
[812709.893363]  [<ffffffff81c32aed>] ? writeback_sb_inodes+0x23d/0x470
[812709.893367]  [<ffffffff81c32da7>] ? __writeback_inodes_wb+0x87/0xb0
[812709.893371]  [<ffffffff81c33122>] ? wb_writeback+0x282/0x310
[812709.893374]  [<ffffffff81c339f4>] ? wb_workfn+0x214/0x3e0
[812709.893378]  [<ffffffff81a9172b>] ? process_one_work+0x14b/0x410
[812709.893381]  [<ffffffff81a921e5>] ? worker_thread+0x65/0x4a0
[812709.893383]  [<ffffffff81a92180>] ? rescuer_thread+0x340/0x340
[812709.893386]  [<ffffffff81a92180>] ? rescuer_thread+0x340/0x340
[812709.893390]  [<ffffffff81a7c689>] ? do_group_exit+0x39/0xb0
[812709.893393]  [<ffffffff81a974e0>] ? kthread+0xe0/0x100
[812709.893398]  [<ffffffff81a2476b>] ? __switch_to+0x2bb/0x700
[812709.893401]  [<ffffffff81a97400>] ? kthread_park+0x60/0x60
[812709.893405]  [<ffffffff81ffa435>] ? ret_from_fork+0x25/0x30

Server2:
[1004725.175725] INFO: task kworker/u49:2:20785 blocked for more than
120 seconds.
[1004725.175790]       Not tainted 4.9.0-0.bpo.1-amd64 #1
[1004725.175818] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[1004725.175859] kworker/u49:2   D    0 20785      2 0x00000000
[1004725.175875] Workqueue: writeback wb_workfn (flush-253:0)
[1004725.175879]  ffff92d41a0efc00 0000000000000000 ffff92cc1bdb3080
ffff92cbcfb5b0c0
[1004725.175882]  ffff92cc1fc187c0 ffffa85ae2aab7a0 ffffffffaa3f536d
00000001c0326d80
[1004725.175885]  0000000000000000 000000001b30ca18 ffffffffa9ebb2ee
ffff92cbcfb5b0c0
[1004725.175888] Call Trace:
[1004725.175898]  [<ffffffffaa3f536d>] ? __schedule+0x23d/0x6d0
[1004725.175904]  [<ffffffffa9ebb2ee>] ? __wake_up_common+0x4e/0x90
[1004725.175906]  [<ffffffffaa3f60a0>] ? bit_wait_timeout+0x90/0x90
[1004725.175908]  [<ffffffffaa3f5832>] ? schedule+0x32/0x80
[1004725.175910]  [<ffffffffaa3f8d3c>] ? schedule_timeout+0x21c/0x3c0
[1004725.175918]  [<ffffffffaa0fe860>] ? blk_flush_plug_list+0xa0/0x220
[1004725.175921]  [<ffffffffaa0fe860>] ? blk_flush_plug_list+0xa0/0x220
[1004725.175923]  [<ffffffffaa3f60a0>] ? bit_wait_timeout+0x90/0x90
[1004725.175925]  [<ffffffffaa3f50b4>] ? io_schedule_timeout+0xb4/0x130
[1004725.175927]  [<ffffffffa9ebb5a7>] ? prepare_to_wait_exclusive+0x57/0x80
[1004725.175928]  [<ffffffffaa3f60b7>] ? bit_wait_io+0x17/0x60
[1004725.175930]  [<ffffffffaa3f5c5f>] ? __wait_on_bit_lock+0x7f/0xb0
[1004725.175932]  [<ffffffffaa3f60a0>] ? bit_wait_timeout+0x90/0x90
[1004725.175934]  [<ffffffffaa3f5e6e>] ? out_of_line_wait_on_bit_lock+0x7e/0xa0
[1004725.175936]  [<ffffffffa9ebb810>] ? autoremove_wake_function+0x40/0x40
[1004725.176006]  [<ffffffffc03386dd>] ? xfs_do_writepage+0x44d/0x700 [xfs]
[1004725.176011]  [<ffffffffa9fc3cee>] ? page_mkclean+0x6e/0xc0
[1004725.176014]  [<ffffffffa9fc2070>] ? __page_check_address+0x1b0/0x1b0
[1004725.176018]  [<ffffffffa9f8c997>] ? write_cache_pages+0x207/0x480
[1004725.176054]  [<ffffffffc0338290>] ? xfs_aops_discard_page+0x130/0x130 [xfs]
[1004725.176063]  [<ffffffffc02c3fa6>] ? dm_make_request+0x76/0xc0 [dm_mod]
[1004725.176097]  [<ffffffffc0338aba>] ? xfs_vm_writepages+0xba/0xf0 [xfs]
[1004725.176101]  [<ffffffffaa03232d>] ? __writeback_single_inode+0x3d/0x330
[1004725.176105]  [<ffffffffa9eee906>] ? ktime_get+0x36/0xa0
[1004725.176108]  [<ffffffffaa032aed>] ? writeback_sb_inodes+0x23d/0x470
[1004725.176111]  [<ffffffffaa032da7>] ? __writeback_inodes_wb+0x87/0xb0
[1004725.176113]  [<ffffffffaa033122>] ? wb_writeback+0x282/0x310
[1004725.176116]  [<ffffffffaa033a98>] ? wb_workfn+0x2b8/0x3e0
[1004725.176121]  [<ffffffffa9e9172b>] ? process_one_work+0x14b/0x410
[1004725.176123]  [<ffffffffa9e921e5>] ? worker_thread+0x65/0x4a0
[1004725.176125]  [<ffffffffa9e92180>] ? rescuer_thread+0x340/0x340
[1004725.176129]  [<ffffffffa9e7c689>] ? do_group_exit+0x39/0xb0
[1004725.176132]  [<ffffffffa9e974e0>] ? kthread+0xe0/0x100
[1004725.176138]  [<ffffffffa9e2476b>] ? __switch_to+0x2bb/0x700
[1004725.176141]  [<ffffffffa9e97400>] ? kthread_park+0x60/0x60
[1004725.176144]  [<ffffffffaa3fa435>] ? ret_from_fork+0x25/0x30

Server3:
[178825.463856] INFO: task kworker/u49:2:18558 blocked for more than
120 seconds.
[178825.463887]       Not tainted 4.9.0-0.bpo.1-amd64 #1
[178825.463905] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[178825.463932] kworker/u49:2   D    0 18558      2 0x00000000
[178825.463962] Workqueue: writeback wb_workfn (flush-253:0)
[178825.463984]  ffff9ab95bb47000 0000000000000000 ffff9ab95bdb80c0
ffff9ab8ac259040
[178825.464014]  ffff9ab95fc587c0 ffffb9e2877df7a0 ffffffff93bf536d
00000001c0318d80
[178825.464043]  0000000000000000 000000005bb3a198 ffffffff936bb2ee
ffff9ab8ac259040
[178825.464093] Call Trace:
[178825.464122]  [<ffffffff93bf536d>] ? __schedule+0x23d/0x6d0
[178825.464165]  [<ffffffff936bb2ee>] ? __wake_up_common+0x4e/0x90
[178825.464209]  [<ffffffff93bf60a0>] ? bit_wait_timeout+0x90/0x90
[178825.464232]  [<ffffffff93bf5832>] ? schedule+0x32/0x80
[178825.464265]  [<ffffffff93bf8d3c>] ? schedule_timeout+0x21c/0x3c0
[178825.464289]  [<ffffffff938fe860>] ? blk_flush_plug_list+0xa0/0x220
[178825.464311]  [<ffffffff938fe860>] ? blk_flush_plug_list+0xa0/0x220
[178825.464333]  [<ffffffff93bf60a0>] ? bit_wait_timeout+0x90/0x90
[178825.464354]  [<ffffffff93bf50b4>] ? io_schedule_timeout+0xb4/0x130
[178825.464376]  [<ffffffff936bb5a7>] ? prepare_to_wait_exclusive+0x57/0x80
[178825.464399]  [<ffffffff93bf60b7>] ? bit_wait_io+0x17/0x60
[178825.464418]  [<ffffffff93bf5c5f>] ? __wait_on_bit_lock+0x7f/0xb0
[178825.464439]  [<ffffffff93bf60a0>] ? bit_wait_timeout+0x90/0x90
[178825.464460]  [<ffffffff93bf5e6e>] ? out_of_line_wait_on_bit_lock+0x7e/0xa0
[178825.464484]  [<ffffffff936bb810>] ? autoremove_wake_function+0x40/0x40
[178825.464563]  [<ffffffffc032a6dd>] ? xfs_do_writepage+0x44d/0x700 [xfs]
[178825.464588]  [<ffffffff937c3cee>] ? page_mkclean+0x6e/0xc0
[178825.464608]  [<ffffffff937c2070>] ? __page_check_address+0x1b0/0x1b0
[178825.464645]  [<ffffffff9378c997>] ? write_cache_pages+0x207/0x480
[178825.464705]  [<ffffffffc032a290>] ? xfs_aops_discard_page+0x130/0x130 [xfs]
[178825.464762]  [<ffffffffc01bcfa6>] ? dm_make_request+0x76/0xc0 [dm_mod]
[178825.464851]  [<ffffffffc032aaba>] ? xfs_vm_writepages+0xba/0xf0 [xfs]
[178825.465677]  [<ffffffff9383232d>] ? __writeback_single_inode+0x3d/0x330
[178825.466440]  [<ffffffff9392a737>] ?
fprop_reflect_period_percpu.isra.5+0x77/0xb0
[178825.467228]  [<ffffffff93832aed>] ? writeback_sb_inodes+0x23d/0x470
[178825.467992]  [<ffffffff93832da7>] ? __writeback_inodes_wb+0x87/0xb0
[178825.468857]  [<ffffffff93833122>] ? wb_writeback+0x282/0x310
[178825.469565]  [<ffffffff93833a98>] ? wb_workfn+0x2b8/0x3e0
[178825.470307]  [<ffffffff9369172b>] ? process_one_work+0x14b/0x410
[178825.471075]  [<ffffffff936921e5>] ? worker_thread+0x65/0x4a0
[178825.471765]  [<ffffffff93692180>] ? rescuer_thread+0x340/0x340
[178825.472504]  [<ffffffff9367c689>] ? do_group_exit+0x39/0xb0
[178825.473216]  [<ffffffff936974e0>] ? kthread+0xe0/0x100
[178825.474007]  [<ffffffff9362476b>] ? __switch_to+0x2bb/0x700
[178825.474664]  [<ffffffff93697400>] ? kthread_park+0x60/0x60
[178825.475434]  [<ffffffff93bfa435>] ? ret_from_fork+0x25/0x30


# uname -a
Linux server 4.9.0-0.bpo.1-amd64 #1 SMP Debian 4.9.2-2~bpo8+1
(2017-01-26) x86_64 GNU/Linux

Please let me know if you need any additional data etc.

Thank you,

Erik

--- End Message ---
--- Begin Message ---
This bug was filed for a very old kernel. If you can reproduce it with
- the current version in unstable/testing
- the latest kernel from buster.backports
please reopen the bug, see https://www.debian.org/Bugs/server-control

--- End Message ---

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