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Try creating a dynptr, then overwriting second slot with first slot of another dynptr. Then, the first slot of first dynptr should also be invalidated, but without our fix that does not happen. As a consequence, the unfixed case allows passing first dynptr (as the kernel check only checks for slot_type and then first_slot == true). Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20230121002241.2113993-12-memxor@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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