From: Ivan Orlov <ivan.orlov0322@xxxxxxxxx> [ Upstream commit 92e9bac18124682c4b99ede9ee3bcdd68f121e92 ] The 'device_name' array doesn't exist out of the 'overflow_allocation_test' function scope. However, it is being used as a driver name when calling 'kunit_driver_create' from 'kunit_device_register'. It produces the kernel panic with KASAN enabled. Since this variable is used in one place only, remove it and pass the device name into kunit_device_register directly as an ascii string. Signed-off-by: Ivan Orlov <ivan.orlov0322@xxxxxxxxx> Reviewed-by: David Gow <davidgow@xxxxxxxxxx> Link: https://lore.kernel.org/r/20240815000431.401869-1-ivan.orlov0322@xxxxxxxxx Signed-off-by: Kees Cook <kees@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- lib/overflow_kunit.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/lib/overflow_kunit.c b/lib/overflow_kunit.c index d305b0c054bb7..9249181fff37a 100644 --- a/lib/overflow_kunit.c +++ b/lib/overflow_kunit.c @@ -668,7 +668,6 @@ DEFINE_TEST_ALLOC(devm_kzalloc, devm_kfree, 1, 1, 0); static void overflow_allocation_test(struct kunit *test) { - const char device_name[] = "overflow-test"; struct device *dev; int count = 0; @@ -678,7 +677,7 @@ static void overflow_allocation_test(struct kunit *test) } while (0) /* Create dummy device for devm_kmalloc()-family tests. */ - dev = kunit_device_register(test, device_name); + dev = kunit_device_register(test, "overflow-test"); KUNIT_ASSERT_FALSE_MSG(test, IS_ERR(dev), "Cannot register test device\n"); -- 2.43.0
