Oracle Linux: Server Rebooted With Error "Kernel panic - not syncing: hung_task: blocked tasks"
(Doc ID 2846167.1)
Last updated on FEBRUARY 10, 2022
Applies to:Linux OS - Version Oracle Linux 7.0 and later
System was stuck at BTRFS rename operation. If the hung_task_panic was set it would reboot after dumping vmcore.
It causes a 3 way deadlock A->B, B->C, C->A involving 3 kernel tasks.
Server rebooted with following call trace:
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