+ bug-fix-warning-suppressions-with-kunit-built-as-module.patch added to mm-hotfixes-unstable branch

+ bug-fix-warning-suppressions-with-kunit-built-as-module.patch added to mm-hotfixes-unstable branch

[Andrew Morton]

The patch titled
     Subject: bug: fix warning suppressions with kunit built as module
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     bug-fix-warning-suppressions-with-kunit-built-as-module.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/bug-fix-warning-suppressions-with-kunit-built-as-module.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Subject: bug: fix warning suppressions with kunit built as module
Date: Wed, 8 Jul 2026 11:54:58 +0200

CONFIG_KUNIT is a tristate symbol but the warning suppression code in
lib/bug.c is only built if it's built-in due to it using a plain #ifdef,
rendering warning suppressions broken for kunit build as loadable module.

kunit_is_suppressed_warning() already has a stub for when kunit is
disabled so drop that guard entirely.

Link: https://lore.kernel.org/20260708095459.12111-1-bartosz.golaszewski@oss.qualcomm.com
Fixes: 85347718ab0d ("bug/kunit: Core support for suppressing warning backtraces")
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Suggested-by: Albert Esteve <aesteve@redhat.com>
Reviewed-by: Albert Esteve <aesteve@redhat.com>
Reviewed-by: David Gow <david@davidgow.net>
Cc: Alessandro Carminati <acarmina@redhat.com>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: Guenetr Roeck <linux@roeck-us.net>
Cc: Kees Cook <kees@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/bug.c |    2 --
 1 file changed, 2 deletions(-)

--- a/lib/bug.c~bug-fix-warning-suppressions-with-kunit-built-as-module
+++ a/lib/bug.c
@@ -219,14 +219,12 @@ static enum bug_trap_type __report_bug(s
 	no_cut   = bug->flags & BUGFLAG_NO_CUT_HERE;
 	has_args = bug->flags & BUGFLAG_ARGS;
 
-#ifdef CONFIG_KUNIT
 	/*
 	 * Before the once logic so suppressed warnings do not consume
 	 * the single-fire budget of WARN_ON_ONCE().
 	 */
 	if (warning && kunit_is_suppressed_warning(true))
 		return BUG_TRAP_TYPE_WARN;
-#endif
 
 	disable_trace_on_warning();
 
_

Patches currently in -mm which might be from bartosz.golaszewski@oss.qualcomm.com are

bug-fix-warning-suppressions-with-kunit-built-as-module.patch