From fcae3c8e27cf2c4393aeead943f59f5330d3b005 Mon Sep 17 00:00:00 2001
From: Bryce Kahle <bryce.kahle@datadoghq.com>
Date: Tue, 16 Nov 2021 08:37:19 -0800
Subject: [PATCH] Fix kernel version sublevel on 4.14 branch

---
 kernel_version.go      | 7 +++++++
 kernel_version_test.go | 1 +
 2 files changed, 8 insertions(+)

diff --git a/kernel_version.go b/kernel_version.go
index 399768801..e7a52403e 100644
--- a/kernel_version.go
+++ b/kernel_version.go
@@ -51,6 +51,13 @@ func KernelVersionFromReleaseString(releaseString string) (uint32, error) {
 	if len(versionParts) >= 4 {
 		patch, _ = strconv.ParseUint(versionParts[3], 10, 8)
 	}
+
+	// clamp patch/sublevel to 255 EARLY in 4.14.252 because they merged this too early:
+	// https://github.com/torvalds/linux/commit/e131e0e880f942f138c4b5e6af944c7ddcd7ec96
+	if major == 4 && minor == 14 && patch >= 252 {
+		patch = 255
+	}
+
 	out := major*256*256 + minor*256 + patch
 	return uint32(out), nil
 }
diff --git a/kernel_version_test.go b/kernel_version_test.go
index dfa224cc8..781939672 100644
--- a/kernel_version_test.go
+++ b/kernel_version_test.go
@@ -40,6 +40,7 @@ var testData = []struct {
 	{true, "4.1.", 262400},
 	{true, "4.1", 262400},
 	{true, "4.19-ovh", 267008},
+	{true, "4.14.252", kernelVersion: 265983},
 }
 
 func TestKernelVersionFromReleaseString(t *testing.T) {