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Exadata VM Crash during CPU Hot Plug (Doc ID 2778007.1)

Last updated on MAY 20, 2021

Applies to:

Oracle Cloud Infrastructure - Version N/A and later
Information in this document applies to any platform.

Symptoms

One virtual machine in the Exadata Cluster was crashed.

The core dump show:

[1322989.431144] smpboot: CPU 16 is now offline
[1322989.432086] ------------[ cut here ]------------
[1322989.722876] kernel BUG at block/blk-flush.c:240!
[1322989.722876] invalid opcode: 0000 [#1] SMP 
[1322989.722876] Modules linked in: ...
...
[1322989.828451] CPU: 0 PID: 0 Comm: swapper/0 Tainted: P           O     4.1.12-124.34.1.el7uek.x86_64 #2
[1322989.828451] Hardware name: Xen HVM domU, BIOS 4.4.4OVM 08/26/2020
[1322989.828451] task: ffffffff81b4b480 ti: ffffffff81b34000 task.ti: ffffffff81b34000
[1322989.828451] RIP: 0010:[<ffffffff81322a82>]  [<ffffffff81322a82>] flush_end_io+0x232/0x260

Changes

vCPU was removed from the VM

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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