CIFS block in function cifs_oplock_break in Red Hat Enterprise Linux 7

Solution Unverified - Updated -

Issue

INFO: task cifsiod:16270 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
cifsiod         D ffff8801ff6d7b88     0 16270      2 0x00000000
Workqueue: cifsiod cifs_oplock_break [cifs]
ffff8801ff6d7a20 0000000000000046 ffff88021233edd0 ffff8801ff6d7fd8
ffff8801ff6d7fd8 ffff8801ff6d7fd8 ffff88021233edd0 ffff88023fd16c40
0000000000000000 7fffffffffffffff ffffffff816898f0 ffff8801ff6d7b88
Call Trace:
[<ffffffff816898f0>] ? bit_wait+0x50/0x50
[<ffffffff8168b879>] schedule+0x29/0x70
[<ffffffff816892c9>] schedule_timeout+0x239/0x2d0
[<ffffffff811a2069>] ? zone_statistics+0x89/0xa0
[<ffffffff816898f0>] ? bit_wait+0x50/0x50
[<ffffffff8168ae1e>] io_schedule_timeout+0xae/0x130
[<ffffffff8168aeb8>] io_schedule+0x18/0x20
[<ffffffff81689901>] bit_wait_io+0x11/0x50
[<ffffffff8168961f>] __wait_on_bit_lock+0x5f/0xc0
[<ffffffff81180084>] __lock_page+0x74/0x90
[<ffffffff810b17e0>] ? wake_bit_function+0x40/0x40
[<ffffffff811907b0>] invalidate_inode_pages2_range+0x3f0/0x430
[<ffffffff81180ad1>] ? find_get_pages_tag+0xe1/0x1a0
[<ffffffff8118e431>] ? pagevec_lookup_tag+0x21/0x30
[<ffffffff8117fe29>] ? filemap_fdatawait_range+0x159/0x1b0
[<ffffffff81190807>] invalidate_inode_pages2+0x17/0x20
[<ffffffffa04e6525>] cifs_invalidate_mapping+0x35/0x60 [cifs]
[<ffffffffa04e65e0>] cifs_revalidate_mapping+0x90/0xa0 [cifs]
[<ffffffffa04e6603>] cifs_zap_mapping+0x13/0x20 [cifs]
[<ffffffffa04dcdc1>] cifs_oplock_break+0x1f1/0x270 [cifs]
[<ffffffff810a805b>] process_one_work+0x17b/0x470
[<ffffffff810a8bd4>] rescuer_thread+0x2c4/0x460
[<ffffffff810a8910>] ? manage_workers.isra.24+0x2d0/0x2d0
[<ffffffff810b064f>] kthread+0xcf/0xe0
[<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140
[<ffffffff81696718>] ret_from_fork+0x58/0x90
[<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

INFO: task kworker/1:1:6979 blocked for more than 120 seconds.

Environment

  • Red Hat Enterprise Linux 7
  • cifs

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