bpf: libbpf: fix memleak by freeing line_info

pbhole · borkmann · commit 07a09d1b73c9 · 2018-12-18T01:16:23.000+01:00
This patch fixes a memory leak in libbpf by freeing up line_info member of struct bpf_program while unloading a program. Fixes: 3d65014 ("bpf: libbpf: Add btf_line_info support to libbpf") Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
@@ -266,6 +266,7 @@ void bpf_program__unload(struct bpf_program *prog)
 
 	zclose(prog->btf_fd);
 	zfree(&prog->func_info);
+	zfree(&prog->line_info);
 }
 
 static void bpf_program__exit(struct bpf_program *prog)

Original file line number	Diff line number	Diff line change
`@@ -266,6 +266,7 @@ void bpf_program__unload(struct bpf_program *prog)`
`266`	`266`
`267`	`267`	`zclose(prog->btf_fd);`
`268`	`268`	`zfree(&prog->func_info);`
	`269`	`+ zfree(&prog->line_info);`
`269`	`270`	`}`
`270`	`271`
`271`	`272`	`static void bpf_program__exit(struct bpf_program *prog)`