IBM Support

Adding memory to a running Linux logical partition might crash the partition

Flashes (Alerts)


Abstract

When extra memory is added to a running Linux logical partition (LPAR), the partition might crash. This issue is observed whenever memory is added after a removal of some amount of memory at run time.

Content

Linux® releases affected: Red Hat Enterprise Linux 8.2, or later
IBM systems affected: All IBM POWER8®, and later systems that are based on PowerVM®.
Symptoms

The kernel crashes with an assertion that is similar to the following:

kernel BUG at mm/memory_hotplug.c:1116

Where, 1116 is a line number that can vary across kernel versions.
Workaround

If memory is removed since the partition has last booted, do not add memory to a running partition. Restart the partition before you add memory.
Fix Outlook
Unknown

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Product Synonym

Red Hat Enterprise Linux 8.2, or later

Document Information

Modified date:
07 May 2020

UID

ibm16205941