Commit 1195505f authored Apr 02, 2021 by Uriel Guajardo Committed by Shuah Khan Aug 13, 2021

kunit: ubsan integration



Integrates UBSAN into the KUnit testing framework. It fails KUnit tests
whenever it reports undefined behavior.

When CONFIG_KUNIT=n, nothing is printed or even formatted, so this has
no behavioral impact outside of tests.

kunit_fail_current_test() effectively does a pr_err() as well, so
there's some slight duplication, but it also ensures an error is
recorded in the debugfs entry for the running KUnit test.

Print a shorter version of the message to make it less spammy.

Co-developed-by: Daniel Latypov <dlatypov@google.com>
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Signed-off-by: Uriel Guajardo <urielguajardo@google.com>
Reviewed-by: Alan Maguire <alan.maguire@oracle.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

parent b0d4adaf

lib/ubsan.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -14,6 +14,7 @@
		#include <linux/types.h>
		#include <linux/sched.h>
		#include <linux/uaccess.h>
		#include <kunit/test-bug.h>

		#include "ubsan.h"

		@@ -141,6 +142,8 @@ static void ubsan_prologue(struct source_location loc, const char reason)
		"========================================\n");
		pr_err("UBSAN: %s in %s:%d:%d\n", reason, loc->file_name,
		loc->line & LINE_MASK, loc->column & COLUMN_MASK);

		kunit_fail_current_test("%s in %s", reason, loc->file_name);
		}

		static void ubsan_epilogue(void)