linux-kernel - [PATCH] UBSAN: Use the kernel panic message markers

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Date: Mon, 18 Dec 2023 14:53:39 +0100
From: Borislav Petkov <bp@...en8.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Andrey Ryabinin <ryabinin.a.a@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] UBSAN: Use the kernel panic message markers

From: "Borislav Petkov (AMD)" <bp@...en8.de>

Use the same splat markers as panic does for easier matching by external
tools scanning kernel dmesg for splats.

Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Cc: Andrey Ryabinin <ryabinin.a.a@...il.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 lib/ubsan.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/lib/ubsan.c b/lib/ubsan.c
index 3f90810f9f42..df4f8d1354bb 100644
--- a/lib/ubsan.c
+++ b/lib/ubsan.c
@@ -204,8 +204,8 @@ static void ubsan_prologue(struct source_location *loc, const char *reason)
 {
 	current->in_ubsan++;
 
-	pr_err("========================================"
-		"========================================\n");
+	pr_warn(CUT_HERE);
+
 	pr_err("UBSAN: %s in %s:%d:%d\n", reason, loc->file_name,
 		loc->line & LINE_MASK, loc->column & COLUMN_MASK);
 
@@ -215,8 +215,7 @@ static void ubsan_prologue(struct source_location *loc, const char *reason)
 static void ubsan_epilogue(void)
 {
 	dump_stack();
-	pr_err("========================================"
-		"========================================\n");
+	pr_warn("---[ end trace ]---\n");
 
 	current->in_ubsan--;
 
-- 
2.42.0.rc0.25.ga82fb66fed25