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de7b992710
Add a regression test to check against invalid check_and_init_map_value call inside prealloc_lru_pop. The kptr should not be reset to NULL once we set it after deleting the map element. Hence, we trigger a program that updates the element causing its reuse, and checks whether the unref kptr is reset or not. If it is, prealloc_lru_pop does an incorrect check_and_init_map_value call and the test fails. Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20220809213033.24147-4-memxor@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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