bpf, libbpf: Fix ___bpf_kretprobe_args1(x) macro definition
Use PT_REGS_RC instead of PT_REGS_RET to get ret correctly. Fixes: df8ff353 ("libbpf: Merge selftests' bpf_trace_helpers.h into libbpf's bpf_tracing.h") Signed-off-by: Wenbo Zhang <ethercflow@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200315083252.22274-1-ethercflow@gmail.com
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