On Wed, 9 Mar 2022 at 02:29, 'Peng Liu' via kasan-dev kasan-dev@googlegroups.com wrote:
This series is to fix UAF when running kfence test case test_gfpzero, which is time costly. This UAF bug can be easily triggered by setting CONFIG_KFENCE_DYNAMIC_OBJECTS = 65535. Furthermore, some optimization for kunit tests has been done.
Yeah, I've observed this problem before, so thanks for fixing.
It's CONFIG_KFENCE_NUM_OBJECTS (not "DYNAMIC") - please fix in all patches.
Peng Liu (3): kunit: fix UAF when run kfence test case test_gfpzero kunit: make kunit_test_timeout compatible with comment kfence: test: try to avoid test_gfpzero trigger rcu_stall
lib/kunit/try-catch.c | 3 ++- mm/kfence/kfence_test.c | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-)
-- 2.18.0.huawei.25
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