task vmtoolsd blocked for more than 120 seconds due to background inode writeout
Issue
- System log reports a blocked task:
INFO: task vmtoolsd:1587 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
vmtoolsd D 0000000000000002 0 1587 1 0x00000080
ffff88083224dd58 0000000000000086 0000000000000000 ffff880831965a30
ffff88083224dcf8 ffff88082ee93500 ffff88082ee93500 ffff88082ee93500
ffff88082ee93ab8 ffff88083224dfd8 000000000000fb88 ffff88082ee93ab8
Call Trace:
[<ffffffff81510725>] rwsem_down_failed_common+0x95/0x1d0
[<ffffffff8121d08f>] ? security_inode_permission+0x1f/0x30
[<ffffffff81510883>] rwsem_down_write_failed+0x23/0x30
[<ffffffff812838c3>] call_rwsem_down_write_failed+0x13/0x20
[<ffffffff8150fd82>] ? down_write+0x32/0x40
[<ffffffff811bd4fe>] freeze_bdev+0xae/0x280
[<ffffffff8119563b>] do_vfs_ioctl+0x1fb/0x580
[<ffffffff81195a41>] sys_ioctl+0x81/0xa0
[<ffffffff810dc685>] ? __audit_syscall_exit+0x265/0x290
[<ffffffff8100b072>] system_call_fastpath+0x16/0x1b
Environment
- Red Hat Enterprise Linux 6.4
- VMware Virtual Platform
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