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Bug 1985100

Summary:	/etc/depmod.d/dist.conf not included in kmod-28-3
Product:	Red Hat Enterprise Linux 9	Reporter:	ricky.armas
Component:	kmod	Assignee:	Yauheni Kaliuta <ykaliuta>
Status:	CLOSED ERRATA	QA Contact:	Ziqian SUN (Zamir) <zsun>
Severity:	unspecified	Docs Contact:	Jana Heves <jsvarova>
Priority:	unspecified
Version:	9.0	CC:	cye, jklech, laurie.barry, sarang.radke, skozina, ykaliuta, zsun
Target Milestone:	beta	Keywords:	Triaged
Target Release:	---	Flags:	pm-rhel: mirror+
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	kmod-28-7.el9	Doc Type:	Bug Fix
Doc Text:	.`modprobe` loads out-of-tree kernel modules as expected The `/etc/depmod.d/dist.conf` configuration file provides a search order for the `depmod` utility. Based on the search order, `depmod` creates the `modules.dep.bin` file. This file lists module dependencies, which the `modprobe` utility uses for loading and unloading kernel modules and resolving module dependencies at the same time. Previously, `/etc/depmod.d/dist.conf` was missing. As a result, `modprobe` could not load some out-of-tree kernel modules. This update includes the `/etc/depmod.d/dist.conf` configuration file, which fixes the search order. As a result, `modprobe` loads out-of-tree kernel modules as expected.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-05-17 15:55:34 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:

Description ricky.armas 2021-07-22 20:49:06 UTC

Description of problem:

/etc/depmod.d/dist.conf is used to override the default depmod search order.

cat /etc/depmod.d/dist.conf
#
# depmod.conf
#

# override default search ordering for kmod packaging
search updates extra built-in weak-updates

Our out-of-box driver build installs in the extra directory. Since this conf file is not present depmod will not search the extra directory. I can't load the OOB driver using modprobe.

# grep lpfc /lib/modules/$(uname -r)/modules.dep
kernel/drivers/scsi/lpfc/lpfc.ko.xz: kernel/drivers/nvme/target/nvmet-fc.ko.xz kernel/drivers/nvme/target/nvmet.ko.xz kernel/drivers/nvme/host/nvme-fc.ko.xz kernel/drivers/nvme/host/nvme-fabrics.ko.xz kernel/drivers/nvme/host/nvme-core.ko.xz kernel/block/t10-pi.ko.xz kernel/drivers/scsi/scsi_transport_fc.ko.xz

I can workaround this by installing under "updates" instead of "extra".

# cd /lib/modules/$(uname -r)
# mv extra updates
# depmod -a
# grep lpfc /lib/modules/$(uname -r)/modules.dep
updates/elx-lpfc/lpfc.ko: kernel/drivers/nvme/target/nvmet-fc.ko.xz kernel/drivers/nvme/target/nvmet.ko.xz kernel/drivers/nvme/host/nvme-fc.ko.xz kernel/drivers/nvme/host/nvme-fabrics.ko.xz kernel/drivers/nvme/host/nvme-core.ko.xz kernel/block/t10-pi.ko.xz kernel/drivers/scsi/scsi_transport_fc.ko.xz

Version-Release number of selected component (if applicable):
RHEL 9 Beta (5.13.0-0.rc3.25.el9.x86_64)

How reproducible:

Steps to Reproduce:
1. Build lpfc kernel module.
2. Copy to /lib/modules/$(uname -r)/extra/elx-lpfc/lpfc.ko
3. Run `depmod -a`.
4. rmmod lpfc && modprobe lpfc

Actual results:
depmod will not search the extra directory. /lib/modules/$(uname -r)/modules.dep references the inbox lpfc kernel module. Out-of-box lpfc will not load using modprobe.

Expected results:
depmod should search the extra directory. The /etc/depmod.d/dist.conf file provides the search order.

Additional info:

Comment 1 ricky.armas 2021-07-22 21:45:45 UTC

Maybe in RHEL9 each OOB module is expected to create its own conf file in /etc/depmod.d.

Instead of relying on /etc/depmod.d/dist.conf, we can create a custom lpfc.conf.
Example:
# cat /etc/depmod.d/lpfc.conf
search updates extra built-in weak-updates

Comment 24 Yauheni Kaliuta 2021-12-20 07:44:06 UTC

*** Bug 2034093 has been marked as a duplicate of this bug. ***

Comment 30 errata-xmlrpc 2022-05-17 15:55:34 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: kmod), 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-2022:3964