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fdcecdff90
- simple propagation of read/write marks; - joining read/write marks from conditional branches; - avoid must_write marks in when same instruction accesses different stack offsets on different execution paths; - avoid must_write marks in case same instruction accesses stack and non-stack pointers on different execution paths; - read/write marks propagation to outer stack frame; - independent read marks for different callchains ending with the same function; - bpf_calls_callback() dependent logic in liveness.c:bpf_stack_slot_alive(). Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20250918-callchain-sensitive-liveness-v3-12-c3cd27bacc60@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>