RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Bug 2165190 - [aarch64] RHEL8 memstrack doesn't work in 1st kernel
Summary: [aarch64] RHEL8 memstrack doesn't work in 1st kernel
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: memstrack
Version: 8.8
Hardware: Unspecified
OS: Unspecified
low
unspecified
Target Milestone: rc
: ---
Assignee: ltao
QA Contact: Li Wang
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-01-28 08:14 UTC by Coiby
Modified: 2023-11-14 18:11 UTC (History)
4 users (show)

Fixed In Version: memstrack-0.2.5-2.el8
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2023-11-14 15:51:02 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHELPLAN-146796 0 None None None 2023-01-28 08:17:10 UTC
Red Hat Product Errata RHBA-2023:7156 0 None None None 2023-11-14 15:51:04 UTC

Description Coiby 2023-01-28 08:14:46 UTC 
Description of problem:

memstrack failed with the followings errors,
    $ journalctl -b0
    memstrack-start[1909]: memstrack - will report kernel module memory usage summary and top allocation stack
    memstrack-start[1920]: Tracing memory allocations, Press ^C to interrupt ...
    memstrack-start[1920]: Error calling perf_event_open: Too many open files
    memstrack-start[1920]: Failed initializing perf events
    systemd[1]: Started Memstrack Anylazing Service.
    systemd[1]: memstrack.service: Main process exited, code=exited, status=24/n/a
    systemd[1]: memstrack.service: Failed with result 'exit-code'.
    systemd[1]: Starting dracut cmdline hook...

Version-Release number of selected component (if applicable):

memstrack-0.2.4-2.el8

RHEL-8.8.0-20230126.17 on hpe-apache-cn99xx-08.khw4.lab.eng.bos.redhat.com

How reproducible:
always

Steps to Reproduce:
1. grubby --args=rd.memdebug=5 --update-kernel=DEFAULT
2. reboot

Actual results:

memstrack failed to report kernel module memory usage.


Expected results:

memstrack should report kernel module memory usage.

Additional info:
1. This issue can be both observed on both the latest kernel 4.18.0-452.el8.aarch64 as of writing and 4.18.0-372.12.1.el8_6.aarch64 which was released about half a year ago
2. This bug can also be reproduced on aarch64 RHEL9
3. memstrack works well in kdump kernel
4. memstrack works fine in other architectures like x86 and s390
Comment 1 Coiby 2023-01-28 09:12:48 UTC 
This is a much easier way to reproduce this issue,

    [root@hpe-apache-cn99xx-08 ~]# memstrack --report module_summary,module_top --notui
    Tracing memory allocations, Press ^C to interrupt ...
    Error calling perf_event_open: Too many open files
    Failed initializing perf events
Comment 3 ltao 2023-03-28 07:54:19 UTC 
Patch posted upstream: [1]

[1]: https://github.com/ryncsn/memstrack/pull/16
Comment 10 errata-xmlrpc 2023-11-14 15:51:02 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (memstrack bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:7156
Note You need to log in before you can comment on or make changes to this bug.