Merge tag 'regmap-fix-v6.10-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap fix from Mark Brown:
 "Guenter ran with memory sanitisers and found an issue in the new KUnit
  tests that Richard added where an assumption in older test code was
  exposed, this was fixed quickly by Richard"

* tag 'regmap-fix-v6.10-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: kunit: Fix array overflow in stride() test

1 files changed, 8 insertions, 1 deletions

diff --git a/drivers/base/regmap/regmap-kunit.c b/drivers/base/regmap/regmap-kunit.c
index 9c5314785fc2..be32cd4e84da 100644
--- a/drivers/base/regmap/regmap-kunit.c
+++ b/drivers/base/regmap/regmap-kunit.c
@@ -609,12 +609,19 @@ static void stride(struct kunit *test)
 	config.reg_stride = 2;
 	config.num_reg_defaults = BLOCK_TEST_SIZE / 2;
 
+	/*
+	 * Allow one extra register so that the read/written arrays
+	 * are sized big enough to include an entry for the odd
+	 * address past the final reg_default register.
+	 */
+	config.max_register = BLOCK_TEST_SIZE;
+
 	map = gen_regmap(test, &config, &data);
 	KUNIT_ASSERT_FALSE(test, IS_ERR(map));
 	if (IS_ERR(map))
 		return;
 
-	/* Only even registers can be accessed, try both read and write */
+	/* Only even addresses can be accessed, try both read and write */
 	for (i = 0; i < BLOCK_TEST_SIZE; i++) {
 		data->read[i] = false;
 		data->written[i] = false;