Bug 1897330 - BUG: Bad page state in process systemctl pfn:1367199
Summary: BUG: Bad page state in process systemctl pfn:1367199
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: kernel-rt
Version: 8.4
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: 8.0
Assignee: Juri Lelli
QA Contact: Mark Simmons
URL:
Whiteboard:
: 1897329 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-11-12 19:38 UTC by Mark Simmons
Modified: 2023-08-08 03:01 UTC (History)
8 users (show)

Fixed In Version:
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Clone Of:
Environment:
Last Closed: 2020-12-01 02:06:55 UTC
Type: Bug
Target Upstream Version:
Embargoed:

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Comment 1 Mark Simmons 2020-11-12 19:44:36 UTC 
*** Bug 1897329 has been marked as a duplicate of this bug. ***
Comment 4 David Hildenbrand 2020-11-16 09:04:08 UTC 
Memory hotunplug can severely affect the performance of a running system.

drain_pages() will have to schedule work on all CPUs, to make sure the PCP is fully drained on that CPU. Soon, it will disable the PCP completely while offlining.

Are we sure we want to even allow that for RT kernels? Are there known users?
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