SUSE-RU-2026:21601-1: moderate: Recommended update for lkl

[SLE-UPDATES]

# Recommended update for lkl

Announcement ID: SUSE-RU-2026:21601-1  
Release Date: 2026-05-08T11:27:43Z  
Rating: moderate  
References:

  * bsc#1237471
  * bsc#1246536
  * bsc#1249252

  
Affected Products:

  * SUSE Linux Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP applications 16.0

  
  
An update that has three fixes can now be installed.

## Description:

This update for lkl fixes the following issues:

Changes in lkl:

  * lkl: systemd: fix udev rule to properly filter for USB devs (bsc#1246536)
  * lkl: fix default build target to include progs
  * kabi: drop page_counter size assertion for non-SMP (bsc#1249252)
  * lkl: link tests against common private library
  * lkl: fix hijack and zpoline parallel builds
  * lkl: tests: fix net setup_backend return status
  * lkl: tests: drop sleep before lklfuse unmount
  * Add ID_FS_UUID based locking to avoid duplicate mounts (bsc#1237471)
  * lkl: tests: add lklfuse_lock_conflict test
  * lkl: systemd: use lklfuse lock parameter
  * lklfuse: add lock parameter to avoid duplicate mounts

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Enterprise Server 16.0  
    zypper in -t patch SUSE-SLES-16.0-725=1

  * SUSE Linux Enterprise Server for SAP applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-725=1

## Package List:

  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le x86_64)
    * lklfuse-0.6.4+git.3163.6cd41567ebe-160000.1.1
    * lkl-debugsource-0.6.4+git.3163.6cd41567ebe-160000.1.1
    * lklfuse-debuginfo-0.6.4+git.3163.6cd41567ebe-160000.1.1
    * lkl-debuginfo-0.6.4+git.3163.6cd41567ebe-160000.1.1
  * SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    * lklfuse-0.6.4+git.3163.6cd41567ebe-160000.1.1
    * lkl-debugsource-0.6.4+git.3163.6cd41567ebe-160000.1.1
    * lklfuse-debuginfo-0.6.4+git.3163.6cd41567ebe-160000.1.1
    * lkl-debuginfo-0.6.4+git.3163.6cd41567ebe-160000.1.1

## References:

  * https://bugzilla.suse.com/show_bug.cgi?id=1237471
  * https://bugzilla.suse.com/show_bug.cgi?id=1246536
  * https://bugzilla.suse.com/show_bug.cgi?id=1249252

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