Subject: [PATCH bpf-next] bpf: arm64: fix uninitialized variable

From: Alexei Starovoitov <[email-masked]>
Date: Mon, 18 Dec 2017 10:09:44 -0800

From: Alexei Starovoitov <[email-masked]>

fix the following issue:
arch/arm64/net/bpf_jit_comp.c: In function 'bpf_int_jit_compile':
arch/arm64/net/bpf_jit_comp.c:982:18: error: 'image_size' may be used
uninitialized in this function [-Werror=maybe-uninitialized]

Fixes: db496944fdaa ("bpf: arm64: add JIT support for multi-function programs")
Reported-by: Arnd Bergmann <[email-masked]>
Signed-off-by: Alexei Starovoitov <[email-masked]>
---
 arch/arm64/net/bpf_jit_comp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c
index 396490cf7316..acaa935ed977 100644
--- a/arch/arm64/net/bpf_jit_comp.c
+++ b/arch/arm64/net/bpf_jit_comp.c
@@ -897,6 +897,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
 		image_ptr = jit_data->image;
 		header = jit_data->header;
 		extra_pass = true;
+		image_size = sizeof(u32) * ctx.idx;
 		goto skip_init_ctx;
 	}
 	memset(&ctx, 0, sizeof(ctx));
-- 
2.9.5