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2022-08-24selftests/bpf: Add tests for reference state fixes for callbacksKumar Kartikeya Dwivedi1-0/+48
These are regression tests to ensure we don't end up in invalid runtime state for helpers that execute callbacks multiple times. It exercises the fixes to verifier callback handling for reference state in previous patches. Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20220823013226.24988-1-memxor@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>