Bug 1967567

Summary: mdflush.bt is not working
Product: Red Hat Enterprise Linux 9 Reporter: Jerome Marchand <jmarchan>
Component: bpftraceAssignee: Jerome Marchand <jmarchan>
Status: CLOSED ERRATA QA Contact: Ziqian SUN (Zamir) <zsun>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 9.0CC: xiawu, zsun
Target Milestone: betaKeywords: Triaged
Target Release: ---Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: bpftrace-0.12.1-3.el9 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2022-05-17 12:54:09 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1919016    

Description Jerome Marchand 2021-06-03 11:42:38 UTC
Description of problem:

mdflush.bt is not working on the latest kernel. The reason is a change in bio structure brought by commit 309dca309fc3 (""block: store a block_device pointer in struct bio).

Upstream need to be fixed first.

# /usr/share/bpftrace/tools/mdflush.bt 
/usr/share/bpftrace/tools/mdflush.bt:29:6-36: ERROR: Struct/union of type 'struct bio' does not contain a field named 'bi_disk'
        ((struct bio *)arg1)->bi_disk->disk_name);
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Comment 1 Jerome Marchand 2021-09-10 12:04:57 UTC
*** Bug 1975154 has been marked as a duplicate of this bug. ***

Comment 8 errata-xmlrpc 2022-05-17 12:54:09 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 (new packages: bpftrace), 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-2022:2419