A deadlock-like hang occurring during the snapshot operation by vmtoolsd for backup purposes

Solution Unverified - Updated -

Issue

  • A deadlock-like hang occurring during the snapshot operation by vmtoolsd for backup purposes
[1518280.204045] INFO: task pool:2223046 blocked for more than 120 seconds.
[1518280.205137] INFO: task masvc:1818 blocked for more than 120 seconds.
[1518280.205420] INFO: task splunkd:1879 blocked for more than 120 seconds.
[1518280.205946] INFO: task WatchdogThread:3256 blocked for more than 120 seconds.
[1518280.206220] INFO: task TcpOutEloop:3790 blocked for more than 120 seconds.
[1518280.206497] INFO: task Send FA Reply:3439502 blocked for more than 120 seconds.
[1518280.207541] INFO: task oneagentos:3157 blocked for more than 120 seconds.
[1518280.208117] INFO: task oneagentos:3247 blocked for more than 120 seconds.
[1518280.213973] INFO: task oneagentplugin:2926 blocked for more than 120 seconds.
[1518280.220943] INFO: task oneagentextensi:4865 blocked for more than 120 seconds.
        ...
[1518280.204045] INFO: task pool:2223046 blocked for more than 120 seconds.
[1518280.204560]       Tainted: P           OE    --------- -  - 4.18.0-477.51.1.el8_8.x86_64 #1
[1518280.204647] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[1518280.204723] task:pool            state:D stack:    0 pid:2223046 ppid:     1 flags:0x10004000
[1518280.204735] Call Trace:
[1518280.204744]  __schedule+0x2d1/0x870
[1518280.204830]  ? rcu_sync_func+0x6e/0xb0
[1518280.204869]  schedule+0x55/0xf0
[1518280.204880]  percpu_down_write+0xd8/0xe0
[1518280.204906]  freeze_super+0x7f/0x130
[1518280.204931]  do_vfs_ioctl+0x51f/0x690
[1518280.204955]  ? syscall_trace_enter+0x2ae/0x2d0
[1518280.204967]  ksys_ioctl+0x64/0xa0
[1518280.204973]  __x64_sys_ioctl+0x16/0x20
[1518280.204979]  do_syscall_64+0x5b/0x1b0
[1518280.204988]  entry_SYSCALL_64_after_hwframe+0x61/0xc6
        ...

Environment

  • Red Hat Enterprise Linux 8
  • VMware VM

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