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Since commitad9a7f9644("libbpf: Improve logging around BPF program loading"), libbpf_debug_print() gets an additional prog_name parameter but doesn't pass it to printf(). Since the format string now expects two arguments, printf() may read uninitialized data and segfault. Pass prog_name through. Fixes:ad9a7f9644("libbpf: Improve logging around BPF program loading") Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20211213183058.346066-1-jean-philippe@linaro.org