🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026
Affected versions: SUSE Linux Enterprise Server 16

📖 ~1 min read

Table of contents
  1. Symptom & Impact
  2. Environment & Reproduction
  3. Root Cause Analysis
  4. Quick Triage
  5. Step-by-Step Diagnosis
  6. Solution – Primary Fix
  7. Solution – Alternative Approaches
  8. Verification & Acceptance Criteria
  9. Rollback Plan
  10. Prevention & Hardening
  11. Related Errors & Cross-Refs
  12. References & Further Reading

Symptom & Impact

After `zypper patch`, `modprobe` of a third-party driver fails with `Exec format error`.

Environment & Reproduction

Common when external repositories ship modules tied to a specific kernel build.

Root Cause Analysis

Kernel was updated but matching `-kmp-*` packages were not refreshed in the same transaction.

Quick Triage

Compare `uname -r` with installed kmp packages: `rpm -qa | grep kmp`.

Step-by-Step Diagnosis

Inspect `/var/log/zypper.log` for skipped vendor changes.

Illustrative mockup for sles-16 — zypper_kernel-mismatch_terminal
Terminal diagnostics for zypper patch leaves kernel modules out of sync — Illustrative mockup — Progressive Robot

Solution – Primary Fix

Reinstall the matching `kmp` package and rebuild initrd via `dracut -f`.

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Illustrative mockup for sles-16 — zypper_kernel-mismatch_logs
Logs and evidence for zypper patch leaves kernel modules out of sync — Illustrative mockup — Progressive Robot

Solution – Alternative Approaches

Pin kernel to the previous version via `zypper addlock kernel-default-` while drivers catch up.

Verification & Acceptance Criteria

`modprobe ` succeeds and `lsmod` lists the third-party driver.

Rollback Plan

Run `zypper rollback` to the previous transaction if drivers stay broken.

Prevention & Hardening

Use `kernel-vendor` channels and matching DKMS/kmp policies in repo priorities.

Pairs with `dracut` warnings about missing modules in the initrd.

Related tutorial: View the step-by-step tutorial for sles-16.

View all sles-16 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

SUSE kernel package and KMP packaging documentation.

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